C语言课程设计源代码

DEAD

由于代码过于长,Flu不会维护本篇内容.
如同本篇博客一样,读者仅需遵守 CC BY-NC-SA 4.0 协议就可随意复制作为自己的课设使用:P

课设介绍

写一个教务系统,支持学生的增删查改,选课的增删查改,以及成绩的管理等.

Flu的代码

数据不放了,毕竟是一堆真名字和假成绩,自己看着输入做,很好做的.

数据格式.txt

写程序之前必须规定数据格式,每个人写自己的格式都不一样会很难办.

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所有文件在./data/xxx.txt里面，规定格式进行IO操作。

首先要明确一点，data存放的是内部文件，不应该让用户看到，密码不用加密。这也就意味着内部文件全部是正确的，否则程序压根跑不了，链表建不起来就会爆炸。比如添加学生输114分不合法的应该直接指出，并且让用户重来。

注意使用ANSI编码否则会乱码。

另外，Flu采用重载所有文件的形式更新文件。
所有课程必须存在，不能重.

所有人密码除非自己设定默认1145141919810位数高还好记.

flag计算规则：
论文6等+9
竞赛，是+5，A+2，B+1，C=0；

《--------------------------------------------------------------------------------》
teacher.txt  存放所有的老师信息。
  %s     %s     %s    %d    %s     %lld                   ("%s %s %d %s %lld")
姓名   性别    密码  工号   邮箱  电话号码
char   char   char   int    char   long long
 40      10        40              50                       空间分配

%d
教几门课程
int

%s
课程名称
char
100

《--------------------------------------------------------------------------------》
cources.txt 存放所有课程信息
%s      %s     %d  %f          %d                 %d             %s
名字 序列号 学时 学分 平时成绩占比 考试成绩占比   课程类型(必修，限选算绩点)
100   100                     0-100的int                            20

%d
学生数

%s    %d   %f   %f
名字 学号 平时 考试（最终成绩，绩点现算）
               floatfloat                float     float

《--------------------------------------------------------------------------------》
student.txt存放所有的学生信息
%s     %s  %d   %s
名字 性别 学号 密码
40     10            40
%d
选几门课
%s
直接连就行了，课程名
100
%d
竞赛得奖个数
%s                     %d     %d
竞赛或论文名字 几等奖 代号(代号会影响绩点计算)
200

《--------------------------------------------------------------------------------》
unjing.txt 存放所有未审核的竞赛
%d                         %s          %d                                  %s                         %s
目标老师工号 认证学生名字 认证学生学号 认证奖项或论文名字加几等奖 学生自己写的备注
                            40                                             200                             200

认证好直接加学生后面即可。

《--------------------------------------------------------------------------------》
jidian.txt 存放绩点计算规则
%d %f
多少分对应多少绩点
%d %f
%d %f
%d %f
%d %f...一共14个

最后是竞赛计算
%f 一共有12个，前6个论文后6个竞赛。

《--------------------------------------------------------------------------------》
.csv所有人导出的规则
名字  排名   %d
学科 平时分 考试分 最终分
xxxxxx
奖项(不空行) 
xxxxx %d等奖

《--------------------------------------------------------------------------------》
history.txt历史成员各种记录.

function.h 头文件,结构体,常量区(其实是全局变量了),函数的声明

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#pragma once

#include<time.h>
#include<math.h>
#include<stdio.h>
#include<conio.h>
#include<errno.h>
#include<string.h>
#include<stdlib.h>
#include<windows.h>


#ifndef FUNCTION_H
#define FUNCTION_H
#define lowbit(x) x&-x
#define EPOCH 100
#define Len_Max 25
#define MAX_PWD 20
#define TEST_RATE 0.2
#define NUM_FEATURES 9
#define TRAIN_RATE 0.8
#define FEATURE_MAX 10
#define SAMPLE_MAX 1000
#define LEARNING_RATE 0.01
#define MAX_LINE_LENGTH 1024
#define DELIMITER ","
#define sl(x) Sleep(x)
#define si putchar('?')
#define cls system("cls")
#define asdf putchar(',')
#define space putchar(' ')
#define enter putchar('\n')

typedef struct STUDENT {
    int id;//学号
    char name[40];//姓名
    float daily;//平时成绩
    float text;//考试成绩
    float final;//最终成绩
}Student;

typedef struct cource {
    char number[50];//课程编号
    char name[50];//课程名称
    char type[50];//课程类型 限选，必修，选修，体育
    char notice[300];//通知，老师可以发布通知
    int notic;//有无通知的标记
    int hours;//总学时
    int top;//多少人学这个
    float credit;//学分
    int Daily;//平时成绩占比
    int Text;//考试成绩占比
    Student stu[100];//学生信息
    cource* next;
}Course;

struct jing {//竞赛 
    char name[200];//竞赛名称 
    char flg;//竞赛种类 ABbC b是B*
    char ff;//是不是计算机类竞赛，否则所得绩点折半（什么霸王条款）'0'不是 '1'Y
    //float rp[10];//加绩点几等奖对应的
    jing* next;
};

struct jingper {//个人竞赛经历
    char name[200];//比赛名称
    int num;//几等奖 
    int flg;//是论文还是比赛，这俩绩点计算不一样
    jingper* next;
};

struct jingupper {//个人竞赛经历,自己填的，填完了申报
    char ownername[40];//申请人姓名
    int xh;//申请人学号
    char name[200];//比赛名称
    char ppin[100];//获奖序列号或者备注
    int num;//几等奖 
    jingupper* next;
};

struct choose {
    Course* tar;
    choose* next;
};

struct stu {
    int xh;//学号 
    char name[40];//姓名 
    float over;//最终绩点 
    char pas[40];//密码
    char sex[10];//性别
    char ff;//推免资格
    int rank;//排名现算吧
    int choo;//选课数
    int ppri;//获奖数
    choose* first;
    jingper* prize;
    stu* next;
};

struct teacher {
    char name[40];//老师名字
    int xh;//老师账号
    char sex[10];
    char email[50];//电子邮件
    long long tel;//电话
    char pas[40];//老师密码
    int tn;//教几门课
    choose* teach;//教课
    jingupper* first;
    teacher* next;
};

struct adm {
    char name[100];
    char pas[100];
    unsigned long long xh;
    adm* next;
};

typedef struct StudentGrade {
    char Class[Len_Max];
    int Grade[Len_Max];
}STG;
typedef struct {
    double feature[FEATURE_MAX];
    float label;
} MR_Sample;
typedef struct {
    double w[FEATURE_MAX];
    double b;
}MR_Model;
typedef struct {
    double features[NUM_FEATURES]; // 有9个特征
    double label;//标签为：学习状况
} LR_Sample;
typedef struct {
    double weights[NUM_FEATURES]; // 权重
    double bias; // 偏置
} LR_Model;


extern float jingji[12];//竞赛绩点
extern float jidian[14];//分数对应绩点
extern int    point[14];//分数
extern time_t timer;
extern tm* info;
extern FILE* his;
extern Course* couhead;
extern stu* stuhead;
extern teacher* teahead;
extern jing* jinghead;
extern adm* admhead;
extern char Multipl_model[];
extern char Logical_model[];
extern int width;
extern int height;
extern int padding;
extern int length;
extern unsigned long long UPDATE;


// <------------------------------ - Function------------------------------------------>
//!!!!!!!!!!===================hisss历史文件选择和记录==============
FILE *gethis();
//!!!!!!!!!!=========================file===============================
teacher * buildtea(Course * head);
void getunp(teacher* head);
void updunp(teacher* head);
jing* jingsearch(int cnt, jing* head);
Course* coursearch1(Course* head, char arr[]);
Course* ReadCouInfor();
void updcou(Course* head);
void updtea(teacher* head);
void getjidian();
void updjidian();
jing* compet();
stu* ReadStuInfor(Course* hhead);
void updstu(stu* head);
void getadm();
void getupdate();
void updupdate();
void updcomp(jing *head);
//!!!!!!!!!=======================search==================================
teacher* teasearch1(int tar, teacher* head);//工号查找
teacher* teasearch2(int tar, teacher* head);//顺序查找
jing* jingsearch(int cnt, jing* head);//按照序号查找竞赛名字
Course* coursearch1(Course* head, char arr[]);//按课程名字查找课程
int courstusearch1(Course* nnode, int xh, float& res);//按学号课程中查找学生的位置，返回位号（int）和成绩
int courstusearch2(Course* nnode, char arr[], float& res);//按名字课程中查找学生的位置，返回位号（int）
Course* cousearch1(Course* head, int num);//按照序号返回指定课程指针
stu* stusearch1(char arr[], stu* head);//姓名查找
stu* stusearch2(int tar, stu* head);//学号查找
stu* stusearch3(int tar, stu* head);//顺序查找




//!!!!!!!!!!==================machine learn==================
void load_MRmodel(char* model_filename, MR_Model* model);//加载多元线性回归模型
void load_LRmodel(char* model_filename, LR_Model* model);//加载逻辑回归模型
double LR_predict(LR_Model* model, LR_Sample* LR_Sample);
double MR_predict(MR_Model* model, MR_Sample* MR_Sample);
void Gradeprdict();//成绩预测
void Learning_state();//学习状况判断
//!!!!!!!!!!=============sort cmp rank============================

char cmpc11(Student a, Student b);
char cmpc12(Student a, Student b);
char cmpc21(Student a, Student b);
char cmpc22(Student a, Student b);
char cmpc31(Student a, Student b);
char cmpc32(Student a, Student b);
char cmpc41(Student a, Student b);
char cmpc42(Student a, Student b);
void coursort(Course* nnode, char a(Student a, Student b));//一个课程排序，经典冒泡



char cmps10(stu* a, stu* b);//学号逆序，小的在上
char cmps21(stu* a, stu* b);//班号排序，一个班的按成绩从大往小排
char cmps22(stu* a, stu* b);//班号排序，一个班的按推免从大往小排
char cmps31(stu* a, stu* b);//推免排序，排序按照成绩
char cmps41(stu* a, stu* b);//平均绩点逆序，大的在上
stu* stusort(stu* head, char a(stu* a, stu* b));//学生排序，经典冒泡，cmp表示比较标准

//!!!!!!!!!===================print csv================================

void lunwenprr();//打印认证的那几档
void jingsaiprr();
void stujingprr(stu* node);//打印一个人所有奖项
void coustuprr(Course* node);//打印课程中的所有学生的信息
void jingprr(jing* head);//按照序号把竞赛打印到屏幕上
void teaprr(teacher* head);//按照序号打印老师在屏幕上
void teacouprr(teacher* node);//按照序号打印某个老师教的所有课
void stuperprr(stu* node);//学生单点打印
void stupercsvprr(stu* node);//单点导出一个人的csv文件，存到/output文件夹里面
void stuprr(stu* head);//打印所有学生
void fstuperprr(stu* node);//学生单点写进历史
void coupercsvprr(cource* head);//打印一个科目所有选课同学信息

void stucsvprr(stu* head);//导出csv


//!!!!!!!!!!!===================check========================
stu* checkstu(int& cfg, char arr[], int tar, stu* head);//检查学生密码是否正确0密码错误1登录成功4查无此人
teacher* checktea(int& cfg, int tar, char ppas[], teacher* head);//检查老师密码是否正确0密码错误1正确4查无此人
adm* checkadm(int& opt2, unsigned long long ko, char arg[], adm* head);
//!!!!!!!!!!==================calculation====================
float jidiancalc(float f);//成绩的绩点计算
void stucalc(stu* nnode);//一个学生计算绩点，使用之前保证学生绩点算法未改变
void sturecalc(stu* head);//所有人都重新算绩点

void courperrecalc(Course* nnode);//一个课程重新计算所有人成绩
void courrecalc(Course* head);//重新计算所有人成绩

void getrank(stu* head);//获取排名，使用前请确保排好序


//!!!!!!!!!========================new del==============================
void newstu(char arr[]);//建新学生
void delstu(stu* node);//删除学生
void newtea(char arg[]);

//页面设计
void getwidth(int* width, int* height);
void Print_pdding();
void Print_head();
void Print_tail(int rol);
void Print_line();
void Print_text(const char* s);
void Print_center(const char* s);
void Print_first(const char* s);
const char* concatenateStrings(const char* str1, const char* str2);
char* intToString(int num);
#endif

function.cpp 函数功能实现

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#include"function.h"
//<------------------------------Constexpr---------------------------------------->
float jingji[12];//竞赛绩点
float jidian[14];//分数对应绩点
int    point[14];//分数
unsigned long long UPDATE;//系统维护时间
time_t timer; tm* info;//这是时间结构体
FILE* his = gethis();//历史操作，不可更改，只能续写(先加\n)
Course* couhead = NULL;//在程序一开始读入课程基本信息
stu* stuhead = NULL;//在程序一开始读入学生基本信息
teacher* teahead = NULL;//建立老师体系
jing* jinghead = NULL;//建立竞赛体系
adm* admhead;//管理员头头
char Multipl_model[] = "./data/model.txt";//只因器学习的东西，别动就完了
char Logical_model[] = "./data/Model_.txt";//只因器学习的东西，别动就完了
int jingnum;//多少个竞赛？

int length = 60;
int width, height;
int padding = (width - length) / 2;

//<-----------------hisss历史文件选择和记录------------------------------>
FILE *gethis(){
    time(&timer);
    info=localtime(&timer);
    int yy=info->tm_year+1900;
    char nname[100]="./log/";
    int lll=strlen(nname);
    nname[lll]=yy/1000+48;
    nname[lll+1]=yy/100%10+48;
    nname[lll+2]=yy/10%10+48;
    nname[lll+3]=yy%10+48;
    yy=info->tm_mon;
    nname[lll+4]=yy/10+48;
    nname[lll+5]=yy%10+48;
    nname[lll+6]='.';
    nname[lll+7]='t';
    nname[lll+8]='x';
    nname[lll+9]='t';
    nname[lll+10]='\0';
    return fopen(nname,"a");
}


//<------------------------------FILE------------------------------>done
teacher* buildtea(Course* head) {
    FILE* ip = fopen("./data/teacher.txt", "r");
    teacher* res = (teacher*)malloc(sizeof(teacher));
    res->next = NULL;
    char a[40], b[5], c[40], e[100];
    int d, n;
    long long f;
    teacher* tmp;
    while (fscanf(ip, "%s %s %s %d %s %lld %d", a, b, c, &d, e, &f, &n) != EOF) {
        tmp = (teacher*)malloc(sizeof(teacher));
        tmp->first = NULL; tmp->teach = NULL; tmp->next = res->next;
        res->next = tmp;
        strcpy(tmp->sex, b);
        strcpy(tmp->pas, c);
        strcpy(tmp->name, a);
        strcpy(tmp->email, e);
        tmp->tel = f;
        tmp->tn = n;
        tmp->xh = d;
        for (int i = 0; i < n; ++i) {
            fscanf(ip, "%s", e);
            Course* ttmp = coursearch1(head, e);
            choose* nnode = (choose*)malloc(sizeof(choose));
            nnode->next = tmp->teach;
            tmp->teach = nnode;
            nnode->tar = ttmp;
        }
    }
    fclose(ip);
    return res->next;
}
void getunp(teacher* head) {//从文件读到申请信息
    FILE* unp = fopen("./data/unjing.txt", "r");
    teacher* tar;
    jingupper* tmp;
    int xx, nnum, xh;
    char buf[200], nnn[100], nname[40];//buf名称，nnn备注
    while (fscanf(unp, "%d %s %d %s %s %d", &xx, nname, &xh, buf, nnn, &nnum) != EOF) {
        tar = teasearch1(xx, head);
        tmp = (jingupper*)malloc(sizeof(jingupper));
        strcpy(tmp->ownername, nname);
        strcpy(tmp->name, buf);
        strcpy(tmp->ppin, nnn);
        tmp->xh = xh;
        tmp->num = nnum;
        tmp->next = tar->first;
        tar->first = tmp;
    }
    fclose(unp);
}
void updunp(teacher* head) {
    FILE* unp = fopen("./data/unjing.txt", "w");
    jingupper* tmp;
    while (head != NULL) {
        tmp = head->first;
        while (tmp != NULL) {
            fprintf(unp, "%d %s %d %s %s %d\n", head->xh, tmp->ownername, tmp->xh, tmp->name, tmp->ppin, tmp->num);
            tmp = tmp->next;
        }
        head = head->next;
    }
    fclose(unp);
}
Course* ReadCouInfor() {//在程序一开始读入课程基本信息
    Course* res = (Course*)malloc(sizeof(Course));
    res->next = NULL;
    char name[100], num[100], type[20];
    float jid;
    int r1, r2, t, notic;
    FILE* ip = fopen("./data/cources.txt", "r");
    while (fscanf(ip, "%s %s %d %f %d %d %s %d", name, num, &t, &jid, &r1, &r2, type, &notic) != EOF) {
        Course* tmp = (Course*)malloc(sizeof(Course));
        tmp->next = res->next;
        res->next = tmp;
        if (notic == 1) {
            fscanf(ip, "%s", tmp->notice);
        }
        fscanf(ip, "%d", &tmp->top);
        strcpy(tmp->name, name);
        strcpy(tmp->number, num);
        strcpy(tmp->type, type);
        tmp->credit = jid;
        tmp->notic = notic;
        tmp->Daily = r1;
        tmp->hours = t;
        tmp->Text = r2;
        for (int i = 1; i <= tmp->top; ++i) {
            fscanf(ip, "%s %d %f %f", tmp->stu[i].name, &tmp->stu[i].id, &tmp->stu[i].daily, &tmp->stu[i].text);
        }
    }
    fclose(ip);
    return res->next;
}
void updcou(Course* head) {
    FILE* op = fopen("./data/cources.txt", "w");
    for (; head != NULL; head = head->next) {
        fprintf(op, "%s %s %d %.1f %d %d %s %d\n", head->name, head->number, head->hours, head->credit, head->Daily, head->Text, head->type, head->notic);
        if (head->notic == 1)fprintf(op, "%s\n%d\n", head->notice, head->top);
        else fprintf(op, "%d\n", head->top);
        for (int i = 1; i <= head->top; ++i) {
            fprintf(op, "%s %d %.1f %.1f\n", head->stu[i].name, head->stu[i].id, head->stu[i].daily, head->stu[i].text);
        }
    }
    fclose(op);
}
void updtea(teacher* head) {
    FILE* op = fopen("./data/teacher.txt", "w");
    for (; head != NULL; head = head->next) {
        fprintf(op, "%s %s %s %d %s %lld\n%d\n", head->name, head->sex, head->pas, head->xh, head->email, head->tel, head->tn);
        choose* tmp = head->teach;
        for (int i = 1; i <= head->tn; ++i, tmp = tmp->next) {
            fprintf(op, "%s ", tmp->tar->name);
        }
        fprintf(op, "\n");
    }
    fclose(op);
}
void getjidian() {
    FILE* ip = fopen("./data/jidian.txt", "r");
    for (int i = 0; i < 14; ++i) {
        fscanf(ip, "%d %f", &point[i], &jidian[i]);
    }
    for (int i = 0; i < 12; ++i) {
        fscanf(ip, "%f", &jingji[i]);
    }
    fclose(ip);
}
void updjidian() {
    FILE* ip = fopen("./data/jidian.txt", "w");
    for (int i = 0; i < 14; ++i) {
        fprintf(ip, "%d %f\n", point[i], jidian[i]);
    }
    for (int i = 0; i < 12; ++i) {
        fprintf(ip, "%f ", jingji[i]);
    }
    fclose(ip);
}
jing* compet() {
    FILE* cp = fopen("./data/comp.txt", "r");
    jing* head = (jing*)malloc(sizeof(jing));
    jing* tmp = head;
    int rr;
    fscanf(cp, "%d", &jingnum);
    for (int i = 0; i < jingnum; ++i) {
        tmp->next = (jing*)malloc(sizeof(jing));
        tmp = tmp->next;
        tmp->next = NULL;
        fscanf(cp, "%s %c %c", (tmp->name), &(tmp->flg), &(tmp->ff));
    }
    fclose(cp);
    return head->next;
}
stu* ReadStuInfor(Course* hhead) {
    FILE* ip = fopen("./data/student.txt", "r");
    stu* res = (stu*)malloc(sizeof(stu)), * tmp = res;
    tmp->next = NULL;
    int xh;
    char sxx[10];
    char nname[100];
    char pas[40];
    while (fscanf(ip, "%s %s %d %s", nname, sxx, &xh, pas) != EOF) {
        tmp = (stu*)malloc(sizeof(stu));
        tmp->next = res->next;
        res->next = tmp;
        tmp->prize = NULL; tmp->first = NULL;
        tmp->xh = xh;
        strcpy(tmp->name, nname);
        strcpy(tmp->sex, sxx);
        strcpy(tmp->pas, pas);
        fscanf(ip, "%d", &tmp->choo);//选几门课，做一个网状链表
        for (int h = 0; h < tmp->choo; ++h) {
            fscanf(ip, "%s", nname);
            choose* ff = (choose*)malloc(sizeof(choose));
            ff->next = tmp->first;
            tmp->first = ff;
            ff->tar = coursearch1(hhead, nname);
        }
        fscanf(ip, "%d", &tmp->ppri);//是否参加竞赛，参加几个，cpn表示个数，导出填无
        for (int kk = 0; kk < tmp->ppri; ++kk) {//竞赛
            jingper* ttmp = (jingper*)malloc(sizeof(jingper));
            ttmp->next = tmp->prize;
            tmp->prize = ttmp;
            fscanf(ip, "%s %d %d", ttmp->name, &ttmp->num, &ttmp->flg);
        }
    }
    fclose(ip);
    return res->next;
};//在程序一开始读入学生基本信息
void updstu(stu* head) {
    FILE* ip = fopen("./data/student.txt", "w");
    for (; head != NULL; head = head->next) {
        //printf("%s %s %d %s\n",head->name,head->sex,head->xh,head->pas);
        //printf("%d\n",head->choo);
        fprintf(ip, "%s %s %d %s\n", head->name, head->sex, head->xh, head->pas);
        fprintf(ip, "%d\n", head->choo);
        for (choose* tmp = head->first; tmp != NULL; tmp = tmp->next) {
            fprintf(ip, "%s ", (tmp->tar)->name);
            //printf("%s ",(tmp->tar)->name);
        }
        fprintf(ip, "\n%d\n", head->ppri);//是否参加竞赛，参加几个，cpn表示个数，导出填无
        //printf("\n%d\n",head->ppri);//是否参加竞赛，参加几个，cpn表示个数，导出填无
        for (jingper* tmp = head->prize; tmp != NULL; tmp = tmp->next) {
            //printf("%s %d %d\n",tmp->name,tmp->num,tmp->flg);
            fprintf(ip, "%s %d %d\n", tmp->name, tmp->num, tmp->flg);
        }
    }
    fclose(ip);
}
void getadm() {
    admhead = NULL;
    FILE* ip = fopen("./data/adm.txt", "r");
    char buf[100], name[100];
    unsigned long long res;
    while (fscanf(ip, "%s %s %llu", name, buf, &res) != EOF) {
        adm* tmp = (adm*)malloc(sizeof(adm));
        tmp->next = admhead;
        admhead = tmp;
        strcpy(tmp->name, name);
        strcpy(tmp->pas, buf);
        tmp->xh = res;
    }
    fclose(ip);
}
void getupdate() {
    FILE* ip = fopen("./data/update.txt", "r");
    fscanf(ip, "%llu", &UPDATE);
    fclose(ip);
}
void updupdate() {
    FILE* op = fopen("./data/update.txt", "w");
    fprintf(op, "%llu", UPDATE);
    fclose(op);
}
void updcomp(jing *head){
    FILE *op=fopen("./data/comp.txt","w");
    fprintf(op,"%d\n",jingnum);
    for(int i=0;i<jingnum;++i){
        fprintf(op,"%s %c %d\n",head->name,head->flg,(int)(head->ff-48));
        head=head->next;
    }
    fclose(op);
}
//<------------------------search------------------------------------->
teacher* teasearch1(int tar, teacher* head) {//工号查找
    for (teacher* tmp = head; tmp != NULL; tmp = tmp->next) {
        if (tar == tmp->xh)return tmp;
    }
    return NULL;
}
teacher* teasearch2(int tar, teacher* head) {//顺序查找
    int n = 1;
    for (teacher* tmp = head; tmp != NULL; tmp = tmp->next) {
        if (tar == n)return tmp;
        n++;
    }
    return NULL;
}
jing* jingsearch(int cnt, jing* head) {//按照序号查找竞赛名字
    for (int n = 1; head != NULL; head = head->next) {
        if (n == cnt)return head;
        n++;
    }
    return NULL;
}
Course* coursearch1(Course* head, char arr[]) {//按课程名字查找课程
    for (; head != NULL; head = head->next) {
        if (strcmp(arr, head->name) == 0)
            return head;
    }
    return NULL;
}
Course* cousearch1(Course* head, int num) {
    for (int i = 1; head != NULL; ++i, head = head->next) {
        if (num == i)return head;
    }
    return NULL;
}
int courstusearch1(Course* nnode, int xh, float& res) {//按学号课程中查找学生的位置，返回位号（int）和成绩
    for (int i = 1; i <= nnode->top; ++i) {//排好序的话返回值就是排名了
        if (nnode->stu[i].id == xh) {
            res = nnode->stu[i].final;
            return i;
        }
    }
    res = 0;
    return 0;
}
int courstusearch2(Course* nnode, char arr[], float& res) {//按名字课程中查找学生的位置，返回位号（int）
    for (int i = 1; i <= nnode->top; ++i) {
        if (strcmp(nnode->stu[i].name, arr) == 0) {
            res = nnode->stu[i].final;
            return i;
        }
    }
    res = 0;
    return 0;
}

stu* stusearch1(char arr[], stu* head) {//姓名查找
    for (stu* tmp = head; tmp != NULL; tmp = tmp->next) {
        if (strcmp(tmp->name, arr) == 0)return tmp;
    }
    return NULL;
}
stu* stusearch2(int tar, stu* head) {//学号查找
    for (stu* tmp = head; tmp != NULL; tmp = tmp->next) {
        if (tar == tmp->xh)
            return tmp;
    }
    return NULL;
}
stu* stusearch3(int tar, stu* head) {//顺序查找
    int i = 1;
    for (stu* tmp = head; tmp != NULL; tmp = tmp->next, ++i) {
        if (tar == i)return tmp;
    }
    return NULL;
}

//<--------------------------check-------------------------------->
stu* checkstu(int& cfg, char arr[], int tar, stu* head) {//检查学生密码是否正确0密码错误1登录成功4查无此人
    for (stu* tmp = head; tmp != NULL; tmp = tmp->next) {
        if (tmp->xh == tar) {
            if (strcmp(tmp->pas, arr) == 0) {
                cfg = 1;
                return tmp;
            }
            else {
                cfg = 0;
                return NULL;
            }
        }
    }
    cfg = 4;
    return NULL;
}
teacher* checktea(int& cfg, int tar, char ppas[], teacher* head) {//检查老师密码是否正确0密码错误1正确4查无此人
    for (teacher* tmp = head; tmp != NULL; tmp = tmp->next) {
        if (tmp->xh == tar) {
            if (strcmp(tmp->pas, ppas) == 0) {
                cfg = 1;
                return tmp;
            }
            else {
                cfg = 0;
                return NULL;
            }
        }
    }
    cfg = 4;
    return NULL;
}
adm* checkadm(int& opt2, unsigned long long ko, char arg[], adm* head) {
    for (adm* tmp = head; tmp != NULL; tmp = tmp->next) {
        if (tmp->xh == ko) {
            if (strcmp(tmp->pas, arg) == 0) {
                opt2 = 1;
                return tmp;
            }
            else {
                opt2 = 0;
                return NULL;
            }
        }
    }
    opt2 = 4;
    return NULL;
}
//<--------------------------sort  cmp rank-------------------------------->
char cmpc11(Student a, Student b) {
    return a.final < b.final;
}
char cmpc12(Student a, Student b) {
    return a.final > b.final;
}
char cmpc21(Student a, Student b) {
    return a.text < b.text;
}
char cmpc22(Student a, Student b) {
    return a.text > b.text;
}
char cmpc31(Student a, Student b) {
    return a.daily < b.daily;
}
char cmpc32(Student a, Student b) {
    return a.daily > b.daily;
}
char cmpc41(Student a, Student b) {
    if (a.id / 100 == b.id / 100) {
        return a.final < b.final;
    }
    return a.id > b.id;
}
char cmpc42(Student a, Student b) {
    if (a.id / 100 == b.id / 100) {
        return a.final > b.final;
    }
    return a.id > b.id;
}
void coursort(Course* nnode, char a(Student a, Student b)) {//一个课程排序，经典冒泡
    char ff = 1;
    Student c;
    while (ff) {
        ff = 0;
        for (int i = 1; i < nnode->top; ++i) {
            if (a(nnode->stu[i], nnode->stu[i + 1])) {
                c = nnode->stu[i];
                nnode->stu[i] = nnode->stu[i + 1];
                nnode->stu[i + 1] = c;
                ff = 1;
            }
        }
    }
}




char cmps10(stu* a, stu* b) {
    return (a->xh) > (b->xh);
}//学号逆序，小的在上
char cmps21(stu* a, stu* b) {
    if (a->xh / 100 == b->xh / 100) {
        return a->over < b->over;
    }
    return a->xh > b->xh;
}//班号排序，一个班的按成绩从大往小排
char cmps22(stu* a, stu* b) {
    if (a->xh / 100 == b->xh / 100) {
        return cmps31(a, b);
    }
    return a->xh > b->xh;
}//班号排序，一个班的按推免从大往小排
char cmps31(stu* a, stu* b) {
    if (a->ff == b->ff) {
        return a->over < b->over;
    }
    return a->ff > b->ff;
}//推免排序，排序按照成绩
char cmps41(stu* a, stu* b) {
    return (a->over) < (b->over);
}//平均绩点逆序，大的在上
stu* stusort(stu* head, char a(stu* a, stu* b)) {//排序，经典冒泡，cmp表示比较标准
    stu* res = (stu*)malloc(sizeof(stu));
    res->next = head;
    char ff = 0;
    do {
        ff = 0;
        for (stu* aa = res, *bb = aa->next, *cc = bb->next; cc != NULL; aa = bb, bb = cc, cc = cc->next) {
            if (a(bb, cc)) {
                aa->next = cc;
                bb->next = cc->next;
                cc->next = bb;
                ff = 1;
                bb = cc;
                cc = cc->next;
            }
        }
    } while (ff);
    return res->next;
}


void getrank(stu* head) {//获取排名，使用前请确保排好序
    for (int i = 1; head != NULL; ++i, head = head->next) {
        head->rank = i;
    }
}

//<-----------------------------print csv------------------------------------>

void lunwenprr() {
    for (int i = 0; i < 30; i++) {
        printf(" ");
    }
    for (int i = 0; i < 100; ++i) {
                printf("=");
    }
    printf("\n");
    for (int i = 0; i < 30; i++) {
        printf(" ");
    }
    printf("1档 业界公认顶级期刊(CELL,NATURE,SCIENCE)\n");
    printf("\n");
    printf("\n");
    for (int i = 0; i < 30; i++) {
        printf(" ");
    }
    printf("2档 CCF-A期刊或CCF-A会议长文或CCF-B会议的最佳论文/最佳学生论文\n");
    printf("\n");
    printf("\n");
    for (int i = 0; i < 30; i++) {
        printf(" ");
    }
    printf("3档 CCF-B期刊论文或中科院期刊分区一区论文或CCF-C会议的最佳论文/最佳学生论文国家级优秀结题项目负责人\n");
    printf("\n");
    printf("\n");
    //printf("    \n");
    for (int i = 0; i < 30; i++) {
        printf(" ");
    }
    printf("4档 CCF-C期刊论文或CCF-B会议长文或中科院期刊分区二区论文或计算机学报，软件学报发表的学术论文\n");
    printf("\n");
    printf("\n");
    for (int i = 0; i < 30; i++) {
        printf(" ");
    }
    printf("5档 影响因子非0的SCI检索期刊论文或CCF-C会议长文或中国科学：信息科学、计算机研究与发展、计算机辅助设计与\n");
    for (int i = 0; i < 30; i++) {
        printf(" ");
    }
    printf("研究学报、电子学报中文版、自动化学报发表的学术论文\n");
    printf("\n");
    printf("\n");
    for (int i = 0; i < 30; i++) {
        printf(" ");
    }
    printf("6档 EI检索期刊\n");
    printf("\n");
    for (int i = 0; i < 30; i++) {
        printf(" ");
    }
    for (int i = 0; i < 100; ++i) {
        printf("=");
    }
    printf("\n");

}
void jingsaiprr() {
    Print_head();
    Print_line();
    Print_first("1档 A类竞赛国家级一等奖（金奖）");
    Print_line();
    Print_first("2档 A类竞赛国家级一等奖（银奖）");
    Print_line();
    Print_first("    B类竞赛国家级等奖（金奖）");
    Print_line();
    Print_first("3档 A类竞赛国家级一等奖（铜奖）");
    Print_line();
    Print_first("    B类竞赛国家级一等奖（银奖）");
    Print_line();
    Print_first("    C类竞赛国家级等奖（金奖）");
    Print_line();
    Print_first("4档 B类竞赛国家级一等奖（铜奖）");
    Print_line();
    Print_first("    C类竞赛国家级一等奖（银奖）");
    Print_line();
    Print_first("5档 C类竞赛国家级等奖（铜奖）");
    Print_tail(1);



    //printf("\n1档 A类竞赛国家级一等奖（金奖）");
    //printf("\n2档 A类竞赛国家级一等奖（银奖）");
    //printf("\n    B类竞赛国家级等奖（金奖）");
    //printf("\n3档 A类竞赛国家级一等奖（铜奖）");
    //printf("\n    B类竞赛国家级一等奖（银奖）");
    //printf("\n    C类竞赛国家级等奖（金奖）");
    //printf("\n4档 B类竞赛国家级一等奖（铜奖）");
    //printf("\n    C类竞赛国家级一等奖（银奖）");
    //printf("\n5档 C类竞赛国家级等奖（铜奖）");
}

void stujingprr(stu* node) {//打印一个人所有奖项
    printf("\n");
    printf("\n");
    if (node->prize == NULL) {
        Print_pdding();
        printf("无奖项\n");
        return;
    }
    jingper* tmp = node->prize;
    Print_pdding();
    for (int i = 0; i < length; i++) {
        printf("=");
    }
    printf("\n");
    printf("\n");
    for (int i = 1; i <= node->ppri; ++i) {
        Print_pdding();
        printf("%d\t%-40s\t%d等奖\n", i, tmp->name, tmp->num);
        tmp = tmp->next;
    }
    printf("\n");
    Print_pdding();
    for (int i = 0; i < length; i++) {
        printf("=");
    }
    printf("\n");
}
void jingprr(jing* head) {//按照序号把竞赛打印到屏幕上
    int i = 1;
    for (int i = 0; i < 30; i++) {
        printf(" ");
    }
    for (int i = 0; i < 100; ++i) {
        printf("=");
    }
    printf("\n");
    for (jing* tmp = head; tmp != NULL; tmp = tmp->next) {
        for (int i = 0; i < 30; i++) {
            printf(" ");
        }
        printf("%d %s %c\n", i, tmp->name, tmp->flg);
        ++i;
    }
    for (int i = 0; i < 30; i++) {
        printf(" ");
    }
    for (int i = 0; i < 100; ++i) {
        printf("=");
    }
}
void teaprr(teacher* head) {//按照序号打印老师在屏幕上
    int cnt = 1;
    Print_head();
    Print_line();
    while (head != NULL) {
        //将数字与字符串连接
        char str[50];
        sprintf(str, "%d", cnt);
        char* name1 = (char*)malloc(strlen(head->name) + 1);
        strcpy(name1, head->name);
        strcat(str, " ");
        strcat(str, name1);
        Print_first(str);
        Print_line();
        //printf("%d %s\n", cnt, head->name);
        free(name1);
        head = head->next; 
        cnt++;
    }
    Print_tail(1);
    printf("\n");
    printf("\n");
    return;
}

void teacouprr(teacher* node) {

    choose* tmp = node->teach;
    char** Name = (char**)malloc(sizeof(char*)*50);
    for (int i = 1; i <= node->tn; ++i) {
        char str[50];
        sprintf(str, "%d", i);
        Name[i] = (char*)malloc(strlen(tmp->tar->name) + 1);
        strcpy(Name[i], tmp->tar->name);
        strcat(str, " ");
        strcat(str, Name[i]);
        Print_first(str);
        Print_line();
        tmp = tmp->next;
    }
    Print_tail(1);
    printf("\n");
    printf("\n");
    for (int i = 1; i <= node->tn; ++i) {
        free(Name[i]);
    }
    free(Name);
}

void coustuprr(Course* node) {
    printf("\n");
    printf("\n");
    Print_pdding();
    for (int i = 0; i < length + 3; i++) {
        printf("=");
    }
    printf("\n");
    printf("\n");
    Print_pdding();
    printf("序号    学号\t\t  姓名\t\t平时成绩 考试成绩 最终成绩\n");
    printf("\n");
    for (int i = 1; i <= node->top; ++i) {
        Print_pdding();
        printf("%-8d%-d\t  %-10s\t%-10.1f%-10.1f%-10.1f\n", i, node->stu[i].id, node->stu[i].name, node->stu[i].daily, node->stu[i].text, node->stu[i].final);
        printf("\n");
    }
    printf("\n");
    Print_pdding();
    for (int i = 0; i < length + 3; i++) {
        printf("=");
    }
    printf("\n");

}
void stuperprr(stu* node) {//学生单点打印

    char str[8];
    //绩点转换成字符串
    sprintf(str, "%.3f", node->over);
    char* Name = (char*)malloc(sizeof(char*));
    strcpy(Name, node->name);
    const char* a = { "的最终绩点:" };
    char str1[10];
    sprintf(str1, "%d", node->rank);
    const char* b = { "当前排名:" };
    strcat(Name, a);
    strcat(Name, str);
    Print_text(Name);
    Print_text(concatenateStrings(b, str1));
    Print_tail(1);
    printf("\n");
    Print_pdding();
    for (int i = 0; i < length + 3; i++) {
        printf("=");
    }
    printf("\n");
    Print_pdding();
    printf("各科成绩如下:\n");
    printf("\n");
    choose* tmp = node->first;
    int num = 0; float res = 0;
    Print_pdding();
    printf("课程\t\t平时成绩\t考试成绩\t最终成绩\t绩点\n");
    printf("\n");
    for (int i = 0; i < node->choo; ++i, tmp = tmp->next) {
        num = courstusearch1(tmp->tar, node->xh, res);
        Print_pdding();
        printf("%-10s\t%-6.1f\t\t%-6.1f\t\t%-6.1f\t\t%-6.1f\n", tmp->tar->name, tmp->tar->stu[num].daily, tmp->tar->stu[num].text, res, jidiancalc(res));
        printf("\n");
    }
    Print_pdding();
    for (int i = 0; i < length + 3; i++) {
        printf("=");
    }
    printf("\n");
    if (node->prize != NULL)//主要是没得奖的看到这个会很不爽
    {
        Print_pdding();
        printf("获得了：\n");
        printf("\n");
    }
    for (jingper* kk = node->prize; kk != NULL; kk = kk->next) {
        Print_pdding();
        printf("%s的%d等奖\n", kk->name, kk->num);
        printf("\n");
    }
}
void fstuperprr(stu* node) {//学生单点打印
    fprintf(his, "\n%s的最终绩点:%.3f\n当前排名:%d\n", node->name, node->over, node->rank);
    fprintf(his, "各科成绩如下:\n");
    printf("\n");
    choose* tmp = node->first;
    int num = 0; float res = 0;
    fprintf(his, "课程 平时成绩 考试成绩 最终成绩 绩点\n");
    for (int i = 0; i < node->choo; ++i, tmp = tmp->next) {
        num = courstusearch1(tmp->tar, node->xh, res);
        fprintf(his, "%s %.1f %.1f %.1f %.1f\n", tmp->tar->name, tmp->tar->stu[num].daily, tmp->tar->stu[num].text, res, jidiancalc(res));
    }
    if (node->prize != NULL)//主要是没得奖的看到这个会很不爽
    {
        Print_pdding();
        fprintf(his, "获得了：\n");
    }
    for (jingper* kk = node->prize; kk != NULL; kk = kk->next) {
        fprintf(his, "%s的%d等奖\n", kk->name, kk->num);
    }
}
void stupercsvprr(stu* node) {//单点导出一个人的csv文件，存到/output文件夹里面
    char csvname[60];
    strcpy(csvname, "./output/");
    strcpy(csvname + 9, node->name);
    int len = strlen(csvname);
    csvname[len] = '.', csvname[len + 1] = 'c', csvname[len + 2] = 's', csvname[len + 3] = 'v', csvname[len + 4] = '\0';
    printf("%s", csvname);
    FILE* op = fopen(csvname, "w");
    fprintf(op, "%s,绩点,%.3f,排名,%d\n", node->name, node->over, node->rank);
    fprintf(op, "学科,平时分,考试分,最终成绩,绩点\n");
    choose* tmp = node->first;
    int num = 0; float res = 0;
    for (int i = 0; i < node->choo; ++i, tmp = tmp->next) {
        num = courstusearch1(tmp->tar, node->xh, res);
        fprintf(op, "%s,%.1f,%.1f,%.1f,%.1f\n", tmp->tar->name, tmp->tar->stu[num].daily, tmp->tar->stu[num].text, res, jidiancalc(res));
    }
    if (node->prize != NULL)//主要是没得奖的看到这个会很不爽
        fprintf(op, "奖项状况\n");
    for (jingper* kk = node->prize; kk != NULL; kk = kk->next) {
        fprintf(op, "%s,%d等奖\n", kk->name, kk->num);
    }
    fclose(op);
}

void coupercsvprr(cource* node) {
    char csvname[70];
    strcpy(csvname, "./output/");
    strcpy(csvname + 9, node->name);
    int len = strlen(csvname);
    csvname[len] = '.', csvname[len + 1] = 'c', csvname[len + 2] = 's', csvname[len + 3] = 'v', csvname[len + 4] = '\0';
    FILE* op = fopen(csvname, "w");
    fprintf(op, "课程名称,课程编号,课程类型,学分,学时,平时分占比,考试分占比,选课人数\n");
    fprintf(op, "%s,%s,%s,%.1f,%d,%d,%d,%d\n", node->name, node->number, node->type, node->credit, node->hours, node->Daily, node->Text, node->top);
    fprintf(op, "姓名,学号,平时分,考试分,总成绩,绩点\n");
    for (int i = 1; i <= node->top; ++i) {
        fprintf(op, "%s,%d,%.1f,%.1f,%.1f,%.1f\n", node->stu[i].name, node->stu[i].id, node->stu[i].daily, node->stu[i].text, node->stu[i].final, jidiancalc(node->stu[i].final));
    }
    fclose(op);
}

void stuprr(stu* head) {//打印所有学生
    printf("\n");
    printf("\n");
    Print_pdding();
    for (int i = 0; i < length + 3; i++) {
        printf("=");
    }
    printf("\n");
    printf("\n");
    Print_pdding();
    printf("序号    学号\t\t  姓名\t\t性别   绩点\t排名\n");
    for (int i = 1; head != NULL; ++i, head = head->next) {
        Print_pdding();
        printf("%-8d%-d\t  %-10s\t%-6s %-.3f\t%-3d\n", i, head->xh, head->name, head->sex, head->over, head->rank);
    }
    printf("\n");
    Print_pdding();
    for (int i = 0; i < length + 3; i++) {
        printf("=");
    }
    printf("\n");
    printf("\n");


}


void stucsvprr(stu* head) {
    FILE* op = fopen("./output/学生.csv", "w");
    fprintf(op, "序号,推免资格,学号,姓名,性别,绩点");
    for (int i = 1; head != NULL; ++i, head = head->next) {
        fprintf(op, "\n%d,%d,%d,%s,%s,%.3f", i,head->ff^1, head->xh, head->name, head->sex, head->over);
    }
    fclose(op);
}
//<--------------------------------calculation------------------------------>
float jidiancalc(float f) {
    for (int i = 0; i < 14; ++i) {//绩点计算
        if (f >= point[i]) {
            return jidian[i];
        }
    }
}
void sturecalc(stu* head) {//所有人都重新算绩点
    for (; head != NULL; head = head->next) {
        stucalc(head);
    }
}
void courperrecalc(Course* nnode) {//一个课程重新计算所有人成绩
    for (int i = 1; i <= nnode->top; ++i) {
        nnode->stu[i].final = (nnode->stu[i].daily * nnode->Daily + nnode->stu[i].text * nnode->Text) / 100;
    }
}
void courrecalc(Course* head) {//所有课程重新计算所有人成绩
    for (; head != NULL; head = head->next) {
        courperrecalc(head);
    }
}
void stucalc(stu* nnode) {//一个学生计算绩点，使用之前保证学生绩点算法未改变
    nnode->over = 0;
    float xf = 0;//学分存储
    for (choose* aa = nnode->first; aa != NULL; aa = aa->next) {
        float rres;
        courstusearch1(aa->tar, nnode->xh, rres);
        rres = jidiancalc(rres);
        if (rres <= 0) {
            nnode->ff = 1;
        }
        if (strcmp(aa->tar->type, "必修") == 0 || strcmp(aa->tar->type, "限选") == 0) {
            nnode->over += aa->tar->credit * rres;
            xf += aa->tar->credit;
        }
    }
    if (nnode->ff != 1)nnode->ff = 0;//防止野值
    if (xf != 0)
        nnode->over /= xf;
    float rett = 0;//临时竞赛绩点存放
    int gh = 0;//状压对象
    for (jingper* tmp = nnode->prize; tmp != NULL; tmp = tmp->next) {//竞赛绩点计算
        if (tmp->flg < 10) {//竞赛
            gh |= 1 << (tmp->flg);
            if (tmp->flg >= 5)
                gh |= 1 << (tmp->flg - 5);
        }
        else {//论文
            gh |= 1 << tmp->flg;
        }
    }
    do {
        int h = lowbit(gh);
        gh ^= h;
        switch (h) {
        case 1 << 15: {//论文范围
            rett += jingji[5];
            break;
        }case 1 << 14: {
            rett += jingji[4];
            break;
        }case 1 << 13: {
            rett += jingji[3];
            break;
        }case 1 << 12: {
            rett += jingji[2];
            break;
        }case 1 << 11: {
            rett += jingji[1];
            break;
        }case 1 << 10: {
            rett += jingji[0];
            break;
        }case 1 << 9: {//竞赛范围
            rett += jingji[6];
            break;
        }case 1 << 8: {
            rett += jingji[7];
            break;
        }case 1 << 7: {
            rett += jingji[8];
            break;
        }case 1 << 6: {
            rett += jingji[9];
            break;
        }case 1 << 5: {
            rett += jingji[10];
            break;
        }case 1 << 4: {
            rett += jingji[6];
            break;
        }case 1 << 3: {
            rett += jingji[7];
            break;
        }case 1 << 2: {
            rett += jingji[8];
            break;
        }case 1 << 1: {
            rett += jingji[9];
            break;
        }case 1: {
            rett += jingji[10];
            break;
        }
        }
    } while (gh);
    if (rett > 0.4)rett = 0.4;
    nnode->over += rett;
    return;
}

void dfs(char arr[], int xh) {
    arr[6] = '\0';
    arr[0] = xh % 1000000 / 100000 + 48;
    arr[1] = xh % 100000 / 10000 + 48;
    arr[2] = xh % 10000 / 1000 + 48;
    arr[3] = xh % 1000 / 100 + 48;
    arr[4] = xh % 100 / 10 + 48;
    arr[5] = xh % 10 + 48;
}



//<--------------------------------machine learn------------------------------->
void load_MRmodel(char* model_filename, MR_Model* model) {
    FILE* file = fopen(model_filename, "r");
    if (file == NULL) {
        perror("Error opening file");
        return;
    }
    for (int i = 0; i < FEATURE_MAX; i++) {
        fscanf(file, "%lf", &model->w[i]);
    }
    fscanf(file, "%lf", &model->b);
    fclose(file);
}//加载多元线性回归模型
void load_LRmodel(char* model_filename, LR_Model* model) {
    FILE* file = fopen(model_filename, "r");
    if (file == NULL) {
        perror("Error opening file");
        return;
    }
    for (int i = 0; i < NUM_FEATURES; i++) {
        fscanf(file, "%lf", &model->weights[i]);
    }
    fscanf(file, "%lf", &model->bias);
    fclose(file);
}//加载逻辑回归模型
double LR_predict(LR_Model* model, LR_Sample* LR_Sample) {
    double z = model->bias;
    for (int i = 0; i < NUM_FEATURES; i++) {
        z += model->weights[i] * LR_Sample->features[i];
    }
    double a = 1 / (1 + exp(-z));
    return a;
}
double MR_predict(MR_Model* model, MR_Sample* MR_Sample) {
    double result = 0;
    for (int i = 0; i < 10; i++)
    {
        result += MR_Sample[0].feature[i] * model->w[i];
    }
    result += model->b;
    return result;
}
void Gradeprdict() {
    cls;
    float max[FEATURE_MAX] = { 100,100,100,99.99,4,3.5,8,11,15,450 };
    float min[FEATURE_MAX] = { 40,40,40,0.08,0,0,0.5,5,8,1 };
    MR_Model* multip_model = (MR_Model*)malloc(sizeof(MR_Model));
    MR_Sample* Student = (MR_Sample*)malloc(sizeof(MR_Sample));
    load_MRmodel(Multipl_model, multip_model);
    int i = 0;
    while (i < 10)
    {
        switch (i)
        {
        case 0:
        {
            Print_pdding();
            printf("请输入第一次作业成绩(百分制）:");
            scanf("%lf", &Student[0].feature[0]);
            i++;
        }
        break;
        case 1:
        {
            Print_pdding();
            printf("请输入第二次作业成绩(百分制）:");
            scanf("%lf", &Student[0].feature[1]);
            i++;
        }
        break;
        case 2:
        {
            Print_pdding();
            printf("请输入第三次作业成绩(百分制）:");
            scanf("%lf", &Student[0].feature[2]);
            i++;
        }
        break;
        case 3:
        {
            Print_pdding();
            printf("请输入作业完成情况(%%):");
            scanf("%lf", &Student[0].feature[3]);
            i++;
        }
        break;
        case 4:
        {
            Print_pdding();
            printf("请输入本学科学习时间(小时):");
            scanf("%lf", &Student[0].feature[4]);
            i++;
        }
        break;
        case 5:
        {
            Print_pdding();
            printf("请输入运动时间(小时):");
            scanf("%lf", &Student[0].feature[5]);
            i++;
        }
        break;
        case 6:
        {
            Print_pdding();
            printf("请输入睡眠时间(小时):");
            scanf("%lf", &Student[0].feature[6]);
            i++;
        }
        break;
        case 7:
        {
            Print_pdding();
            printf("请输入娱乐时间(小时):");
            scanf("%lf", &Student[0].feature[7]);
            i++;
        }
        break;
        case 8:
        {
            Print_pdding();
            printf("请输入选课数量(节):");
            scanf("%lf", &Student[0].feature[8]);
            i++;
        }
        break;
        case 9:
        {
            Print_pdding();
            printf("请输入平均排名(名):");
            scanf("%lf", &Student[0].feature[9]);
            i++;
        }
        break;
        }
    }
    for (int i = 0; i < 10; i++)
    {
        Student->feature[i] = (Student->feature[i] - min[i]) / (max[i] - min[i]);
    }
    double result = MR_predict(multip_model, Student);
    if (result > 100)
        result = 100;
    else if(result<0)
        result = 0;
    Print_pdding();
    printf("预测期末成绩为:%.1f\n", result);
    free(Student);
    free(multip_model);
}//成绩预测
void Learning_state() {
    LR_Model* logical_model = (LR_Model*)malloc(sizeof(LR_Model));
    LR_Sample* student = (LR_Sample*)malloc(sizeof(LR_Sample));
    load_LRmodel(Logical_model, logical_model);
    float max[NUM_FEATURES] = { 99.96,100,100,10,2,12,5,14,449 };
    float min[NUM_FEATURES] = { 0.04,50.01,0.06,0,0, 5,0,8,1 };
    int i = 0;
    while (i < 9)
    {
        switch (i)
        {
        case 0:
        {
            Print_pdding();
            printf("请输入你现阶段的考试成绩(百分制）:");
            scanf("%lf", &student->features[i]);
            printf("\n");
            i++;
        }
        break;
        case 1:
        {
            Print_pdding();
            printf("请输入你现阶段的出勤率(%%):");
            scanf("%lf", &student->features[i]);
            printf("\n");
            i++;
        }
        break;
        case 2:
        {
            Print_pdding();
            printf("请输入你现阶段的作业完成情况(%%):");
            scanf("%lf", &student->features[i]);
            printf("\n");
            i++;
        }
        break;
        case 3:
        {
            Print_pdding();
            printf("请输入你现阶段的学习时间(小时):");
            scanf("%lf", &student->features[i]);
            printf("\n");
            i++;
        }
        break;
        case 4:
        {
            Print_pdding();
            printf("请输入你现阶段的运动时间(小时):");
            scanf("%lf", &student->features[i]);
            printf("\n");
            i++;
        }
        break;
        case 5:
        {
            Print_pdding();
            printf("请输入你现阶段的睡眠时间(小时):");
            scanf("%lf", &student->features[i]);
            printf("\n");
            i++;
        }
        break;
        case 6:
        {
            Print_pdding();
            printf("请输入你现阶段的娱乐时间(小时):");
            scanf("%lf", &student->features[i]);
            printf("\n");
            i++;
        }
        break;
        case 7:
        {
            Print_pdding();
            printf("请输入你这学期的选课数量(节):");
            scanf("%lf", &student->features[i]);
            printf("\n");
            i++;
        }
        break;
        case 8:
        {
            Print_pdding();
            printf("请输入你上学期的排名(名):");
            scanf("%lf", &student->features[i]);
            printf("\n");
            i++;
        }
        break;
        }
    }
    for (int i = 0; i < NUM_FEATURES; i++) {
        student->features[i] = (student->features[i] - min[i]) / (max[i] - min[i]);
    }
    double result = LR_predict(logical_model, student);
    if (result > 0.5)
    {
        Print_pdding();
        printf("学习状态:良好\n");
    }
    else
    {
        Print_pdding();
        printf("学习状态:较差\n");
    }

    free(student);
    free(logical_model);
}//逻辑回归判断学习状态好坏
//<------------------------------delete new---------------------------------->
void delstu(stu* node) {
    if (stuhead == node) {
        stuhead = stuhead->next;
    }
    else {
        for (stu* tmp = stuhead; tmp->next != NULL; tmp = tmp->next) {
            if (tmp->next == node) {
                tmp->next = node->next;
                break;
            }
        }
    }
    float a;
    for (choose* tmp = node->first; tmp != NULL; tmp = tmp->next) {
        int rres = courstusearch1(tmp->tar, node->xh, a);
        tmp->tar->stu[rres] = tmp->tar->stu[tmp->tar->top];
        tmp->tar->top--;
    }
}
void newstu(char arr[]) {
    cls;
    stu* hi = (stu*)malloc(sizeof(stu));
    hi->first = NULL;
    hi->prize = NULL;
    char buf[100];
    int x;
    printf("\n");
    printf("\n");
    Print_pdding();
    printf("请输入新同学的名字:\n");
    Print_pdding();
    scanf("%s", hi->name);
    printf("\n");
    Print_pdding();
    printf("请输入新同学的性别:\n");
    Print_pdding();
    scanf("%s", hi->sex);
rep100007:
    printf("\n");
    Print_pdding();
    printf("请输入新同学的学号:\n");
    Print_pdding();
    scanf("%d", &hi->xh);
    printf("\n");
    for (stu* tmp = stuhead; tmp != NULL; tmp = tmp->next) {
        if (tmp->xh == hi->xh) {
            Print_pdding();
            printf("学号重复，请重新输入。\n");
            goto rep100007;
        }
    }
    Print_pdding();
    dfs(hi->pas, hi->xh);
    printf("请输入新同学的选课个数:\n");
    Print_pdding();
    scanf("%d", &hi->choo);
    printf("\n");
    for (int i = 0; i < hi->choo; ++i) {
        choose* yo = (choose*)malloc(sizeof(yo));
        rep91:
        Print_pdding();
        printf("请输入新同学的选课名字:\n");
        Print_pdding();
        scanf("%s", buf);
        printf("\n");
        Course* che= coursearch1(couhead, buf);
        if (che == NULL) {
            Print_pdding();
            printf("课程不存在，请重新输入。\n");
            goto rep91;
        }
        yo->tar = che;
        x = ++(yo->tar->top);
        yo->next = hi->first;
        hi->first = yo;
        Print_pdding();
        printf("请输入该同学平时分:\n");
        Print_pdding();
        scanf("%f", &yo->tar->stu[x].daily);
        printf("\n");
        Print_pdding();
        printf("请输入该同学考试分:\n");
        Print_pdding();
        scanf("%f", &yo->tar->stu[x].text);
        printf("\n");
        strcpy(yo->tar->stu[x].name, hi->name);
        yo->tar->stu[x].id = hi->xh;
    }
    Print_pdding();
    printf("请输入新同学的竞赛获奖个数:\n");
    Print_pdding();
    scanf("%d", &hi->ppri);
    printf("\n");
    for (int i = 0; i < hi->ppri; ++i) {
        jingper* rres = (jingper*)malloc(sizeof(jingper));
        rres->next = hi->prize;
        hi->prize = rres;
    rrep1:
        Print_pdding();
        printf("请输入他的获奖种类:\n");
        printf("\n");
        Print_pdding();
        printf("1.竞赛      2.论文\n");
        Print_pdding();
        scanf("%d", &x);
        switch (x) {
        case 1: {
            cls;
            jingprr(jinghead);
            Print_pdding();
            printf("请按照标号选择目标竞赛:");
            Print_pdding();
            scanf("%d", &x);
            jing* jkl = jingsearch(x, jinghead);
            if (jkl != NULL) {
                Print_pdding();
                printf("请输入获奖等级:\n");
                Print_pdding();
                scanf("%d", &x);
                strcpy(rres->name, jkl->name);
                rres->flg = 3 - x + ((jkl->ff == 1) ? 5 : 0) + ((jkl->flg == 'A') ? 2 : (jkl->flg == 'C') ? 0 : 1);
                rres->num = x;
                Print_pdding();
                printf("奖项认证成功。\n");
                fprintf(his, "\n%s授予%s", arr, hi->name);//历史
            }
            else {
                cls;
                Print_pdding();
                printf("操作数无效。请重新输入。\n");
                sl(2000);
                goto rrep1;
            }
            break;
        }
        case 2: {
            cls;
            lunwenprr();
            Print_pdding();
            printf("\n论文分为六档，请输入申请人的论文是第几档：\n");
            Print_pdding();
            scanf("%d", &x);
            rres->num = x;
            rres->flg = x + 9;
            Print_pdding();
            printf("请输入论文名字:\n");
            Print_pdding();
            scanf("%s", rres->name);
            Print_pdding();
            printf("奖项认证成功。\n");
            fprintf(his, "\n%s授予%s", arr, hi->name);//历史
            break;
        }
        default: {
            Print_pdding();
            printf("操作数无效，请重新输入。");
            goto rrep1;
        }
        }
    }
    hi->next = stuhead;
    stuhead = hi;
    stucalc(hi);
    cls;
    Print_pdding();
    printf("新同学添加成功。");
    sl(2000);

}
void newtea(char arg[]) {
    teacher* res = (teacher*)malloc(sizeof(teacher));//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    res->next = teahead;
    teahead = res;
    char buf[100];
    res->first = NULL;
    Print_pdding();
    printf("请输入新老师的姓名：\n");
    Print_pdding();
    scanf("%s", res->name);
    Print_pdding();
    printf("请输入新老师的性别：\n");
    Print_pdding();
    scanf("%s", res->sex);
    Print_pdding();
    printf("请输入新老师的工号：\n");
    Print_pdding();
    scanf("%d", &res->xh);
    dfs(res->pas, res->xh);
    Print_pdding();
    printf("请输入新老师的电话：\n");
    Print_pdding();
    scanf("%lld", &res->tel);
    Print_pdding();
    printf("请输入新老师的电子邮件地址：\n");
    Print_pdding();
    scanf("%s", res->email);
    Print_pdding();
    printf("请输入新老师的所教课程数：\n");
    Print_pdding();
    scanf("%d",&res->tn);
    for (int i = 0; i < res->tn; ++i) {
        Print_pdding();
        printf("请输入新老师的所教课程：\n");
        choose* tmp = (choose*)malloc(sizeof(choose));
        Print_pdding();
        scanf("%s", buf);
        tmp->tar = coursearch1(couhead, buf);
        tmp->next = res->teach;
        res->teach = tmp;
    }
    Print_pdding();
    printf("新老师添加成功。\n");
    fprintf(his, "管理员%s添加了新老师：%s", arg, res->name);
}

//页面设计
void getwidth(int* width, int* height) {
    CONSOLE_SCREEN_BUFFER_INFO csbi;
    GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi);
    *width = csbi.srWindow.Right - csbi.srWindow.Left + 1;
    *height = csbi.srWindow.Bottom - csbi.srWindow.Top + 1;
    return;
}
void Print_pdding() {
    for (int i = 0; i < padding; i++) {
        printf(" ");
    }
    return;
}
void Print_head() {
    for (int i = 0; i < 3; i++) {
        printf("\n");
    }
    Print_pdding();
    printf("┏");
    for (int i = 0; i < length; i++) {
        printf("━");
    }
    printf("┓\n");
    return;
}//打印表头
void Print_tail(int rol) {
    for (int i = 0; i < rol; i++) {
        Print_line();
    }
    Print_pdding();
    printf("┗");
    for (int i = 0; i < length; i++) {
        printf("━");
    }
    printf("┛\n");
    return;
}//打印表尾
void Print_line() {
    Print_pdding();
    printf("┃");
    for (int i = 0; i < length; i++) {
        printf(" ");
    }
    printf("┃\n");
    return;
}//打印分割线
void Print_text(const char* s) {
    int len = strlen(s);
    int pdd = 18;
    int y = length - len - pdd;
    Print_pdding();
    printf("┃");
    for (int i = 0; i < pdd; i++) {
        printf(" ");
    }
    printf("%s", s);
    for (int i = 0; i < y; i++) {
        printf(" ");
    }
    printf("┃\n");
    return;
}
void Print_center(const char* s) {
    int len = strlen(s);
    Print_pdding();
    printf("┃");
    for (int i = 0; i < (length - len) / 2; i++) {
        printf(" ");
    }
    printf("%s", s);
    for (int i = 0; i < (length - len) / 2; i++) {
        printf(" ");
    }
    printf("┃\n");
    return;
}
void Print_first(const char* s) {
    int len = strlen(s);
    int pdd = 4;
    int y = length - len - pdd;
    Print_pdding();
    printf("┃");
    for (int i = 0; i < pdd; i++) {
        printf(" ");
    }
    printf("%s", s);
    for (int i = 0; i < y; i++) {
        printf(" ");
    }
    printf("┃\n");
    return;
}
const char* concatenateStrings(const char* str1, const char* str2) {
    size_t len1 = strlen(str1);
    size_t len2 = strlen(str2);
    size_t totalLen = len1 + len2 + 1; // 加1是为了结束符 '\0'

    char* result = (char*)malloc(totalLen * sizeof(char));
    if (result == NULL) {
        return NULL;
    }

    strcpy(result, str1);
    strcat(result, str2);

    return (const char*)result;
}
char* intToString(int num) {
    // 计算所需的字符串长度，包括负号和终止符
    int length = num <= 0 ? 2 : 1; // 如果是0或负数，需要额外一个字符存储负号
    int n = num;
    while (n != 0) {
        n /= 10;
        length++;
    }

    char* str = (char*)malloc(length * sizeof(char));
    if (str == NULL) {
        return NULL; // 内存分配失败
    }
    // 使用sprintf将整数转换为字符串
    sprintf(str, "%d", num);
    return str;
}

main.cpp 主框架实现

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#include"function.h"



//最终版本

//<-------------------------------------Main---------------------------------->
int main(){


    //printf("┃━  ┓  ┗  ┏  ┛");
//system("mode con cols=160 lines=40 ");
    system("mode con cols=160");
    CONSOLE_FONT_INFOEX cfi;//用于存储即将设置的字体信息。
    cfi.cbSize = sizeof(cfi);//设置结构体大小
    cfi.nFont = 0;//字体索引
    cfi.dwFontSize.X = 10;//宽度
    cfi.dwFontSize.Y = 20;//高度
    cfi.FontFamily = FF_DONTCARE;//字体族
    cfi.FontWeight = FW_BOLD;//字体加粗
    wcscpy(cfi.FaceName, L"楷体"); // 设置字体名称为楷体

    // 设置控制台字体
    SetCurrentConsoleFontEx(GetStdHandle(STD_OUTPUT_HANDLE), FALSE, &cfi);

    SetConsoleTitleW(L"学生成绩管理系统");
    system("color 70");

    getwidth(&width, &height);
    padding = (width - length) / 2;


    getupdate();
    getadm();
    getjidian();
    couhead=ReadCouInfor();//在程序一开始读入课程基本信息
    stuhead=ReadStuInfor(couhead);//在程序一开始读入学生基本信息
    teahead=buildtea(couhead);//建立老师体系
    jinghead=compet();//建立竞赛体系
    getunp(teahead);//获取未处理的奖项

    courrecalc(couhead);//算成绩
    sturecalc(stuhead);//算绩点
    stuhead=stusort(stuhead,cmps31);
    getrank(stuhead);//算排名

    //<----------------------------------menu--------------------------------->
    int opt1=0,opt2=0;
    char arr[100];
bbegin:
    cls;
    Print_head();
    Print_center("欢迎使用学生成绩管理系统");
    Print_line();
    Print_line();
    Print_text("1.学生登录");
    for (int i = 0; i < 3; i++)
        Print_line();
    Print_text("2.老师登录");
    for (int i = 0; i < 3; i++)
        Print_line();
    Print_text("3.管理员登录");
    for (int i = 0; i < 3; i++)
        Print_line();
    Print_text("0.退出");
    Print_tail(10);
    Print_pdding();
    //printf("您好，欢迎使用学生成绩管理系统。\n");
    //printf("您想做什么？\n1.学生登录\n2.老师登录\n3.管理员登录\n0.退出\n");
    int ck;
    
    ck= scanf("%d", &opt1);
    if (ck == 1) {
        switch (opt1) {
        case 1: {//stulogin
            cls;
            if (time(0) < UPDATE) {//维护中
                printf("系统维护中，除管理员外均无法登录系统。");
                sl(3000);
                goto bbegin;
            }
            cls;
            Print_pdding();
            printf("请输入您的账号，也就是您的学号:");
            scanf("%d", &opt1);
            Print_pdding();
            printf("请输入您的密码，默认是学号后六位:");
            scanf("%s", arr);
            stu* aax = checkstu(opt2, arr, opt1, stuhead);
            if (opt2 == 1) {//登录成功
                time(&timer);//将谁登录写入历史
                info = localtime(&timer);
                fprintf(his, "\n%s学生%s登录", asctime(info), aax->name);
            stubegin:cls;
                for (choose* aa = aax->first; aa != NULL; aa = aa->next) {
                    if (aa->tar->notic == 1) {
                        Print_pdding();
                        for (int i = 0; i < length; ++i)
                            printf("━");
                        printf("\n");
                        Print_pdding();
                        printf("来自 %s 的通知：\n", aa->tar->name);
                        Print_pdding();
                        printf("%s\n", aa->tar->notice);
                        Print_pdding();
                        for (int i = 0; i < length; ++i)
                            printf("━");
                    }
                }

                char* name1;
                name1 = (char*)malloc(100 * sizeof(char));
                strcpy(name1, aax->name);
                const char* a = { "您好,您接下来的操作是:" };
                strcat(name1, a);
                Print_head();
                Print_line();
                Print_first(name1);
                for (int i = 0; i < 2; i++)
                    Print_line();
                Print_text("1.查询成绩及排名");
                for (int i = 0; i < 3; i++)
                    Print_line();
                Print_text("2.申请奖项认证");
                for (int i = 0; i < 3; i++)
                    Print_line();
                Print_text("3.修改密码");
                for (int i = 0; i < 3; i++)
                    Print_line();
                Print_text("4.退出登录");
                for (int i = 0; i < 3; i++)
                    Print_line();
                Print_text("0.退出系统");
                Print_tail(5);
                Print_pdding();
                free(name1);
                ck = scanf("%d", &opt1);
                if (ck == 1) {
                    switch (opt1) {//学生的选项
                    case 1: {
                    chengji:
                        cls;
                        Print_head();
                        Print_line();
                        stuperprr(aax);
                        fprintf(his, "\n%s查看了自己的成绩", aax->name);
                        printf("\n");
                        Print_pdding();
                        printf("您可以选择导出您的成绩至Excel表格中。\n");
                        printf("\n");
                        Print_pdding();
                        printf("1.导出.csv\n");
                        printf("\n");
                        Print_pdding();
                        printf("2.学习状况评估\n");
                        printf("\n");
                        Print_pdding();
                        printf("O.返回上一级\n");
                        Print_pdding();

                        ck = scanf("%d", &opt1);
                        if (ck == 1) {
                            if (opt1 == 1) {
                                stupercsvprr(aax);
                                printf("导出成功，请注意程序非正常结束是不会有文件留下的哦！！！");
                                fprintf(his, "并导出了");
                                sl(2000);
                                goto chengji;
                            }
                            else if (opt1 == 2) {
                                cls;
                                Learning_state();
                                sl(2000);
                                goto chengji;
                            }
                            else if (opt1 == 0) {
                                goto stubegin;
                            }
                            else {
                                Print_pdding();
                                printf("操作数无效。自动返回上一级。\n");
                                sl(2000);
                                goto chengji;
                            }
                            
                        }
                        else
                        {
                            Print_pdding();
                            printf("输入不合法，请重新输入!");
                            scanf("%*s");
                            sl(2000);
                            goto chengji;
                        }
                    }
                    case 2: {
                        cls;
                        jingupper* ghj = (jingupper*)malloc(sizeof(jingupper));
                        teacher* tmp;
                        strcpy(ghj->ownername, aax->name);
                        ghj->xh = aax->xh;
                        Print_pdding();
                        printf("请输入您希望得到认证的奖项名称或者论文名称，方便查验：\n");
                        Print_pdding();
                        scanf("%s", ghj->name);
                        Print_pdding();
                        printf("有什么备注吗？获奖序列号或者方便认证的文字：\n");
                        Print_pdding();
                        scanf("%s", ghj->ppin);
                        Print_pdding();
                        printf("获得了几等奖？请输入数字，如:一等奖->1\n");
                        Print_pdding();
                        scanf("%d", &ghj->num);
                    ss10:
                        teaprr(teahead);
                        int ff = 1;
                        Print_pdding();
                        printf("您好，请输入您想选择的奖项认证老师前面的数字：\n");
                        Print_pdding();
                        scanf("%d", &ff);//特判不合法情况，注意
                        tmp = teasearch2(ff, teahead);
                        if (tmp == NULL) {
                            Print_pdding();
                            printf("您的输入不合法，请重新输入。");
                            sl(2000);
                            cls;
                            goto ss10;
                        }
                        ghj->next = tmp->first;
                        tmp->first = ghj;
                        cls;
                        Print_pdding();
                        printf("奖项申请成功！指定的老师会审核您的申请。\n");
                        Print_pdding();
                        printf("即将返回上级菜单...\n");
                        sl(2000);
                        fprintf(his, "\n%s申请了奖项认证：\n%s %s", aax->name, ghj->name, ghj->ppin);//历史
                        goto stubegin; break;
                    }
                    case 3: {
                        cls;
                        char buf[40], obuf[40];
                    rep1:
                        memset(buf, 0, sizeof(buf));
                        memset(obuf, 0, sizeof(obuf));//密，密码过长咋办？？？
                        Print_pdding();
                        printf("请输入您的新密码：\n");//数字啊字符判定啊啥的，还能凹，但是没啥必要
                        Print_pdding();
                        scanf("%s", buf);//密码输出出来变星号啊啥的，还能凹，但是我不会了
                        if (strlen(buf) < 10) {
                            Print_pdding();
                            printf("您的密码长度小于10，安全性不强，请重新设定。\n");
                            goto rep1;
                        }
                        Print_pdding();
                        printf("请再输一遍保证密码正确：\n");
                        Print_pdding();
                        scanf("%s", obuf);
                        if (strcmp(buf, obuf) != 0) {
                            Print_pdding();
                            printf("两次密码不一致，请重新设置密码！\n");
                            Sleep(2000);
                            system("cls");
                            goto rep1;
                        }
                        fprintf(his, "\n%s修改了他的密码：\n%s变动为%s", aax->name, aax->pas, buf);//历史
                        strcpy(aax->pas, buf);
                        Print_pdding();
                        printf("新密码应用成功！\n");
                        sl(3000);
                        cls;
                        goto stubegin; break;
                    }
                    case 4: {
                        fprintf(his, "\n%s退出了登录", aax->name);
                        goto bbegin; break;
                    }
                    case 0: {
                        fprintf(his, "\n%s退出了登录", aax->name);
                        goto eend; break;
                    }
                    default: {
                        Print_pdding();
                        printf("输入不合法，请重新输入!");
                        goto stubegin; break;
                    }
                    }
                }
                else {
                    Print_pdding();
                    printf("输入不合法，请重新输入!");
                    scanf("%*s");
                    sl(2000);
                    goto stubegin;
                }
            }
            else if (opt2 == 0) {
                Print_pdding();
                printf("密码错误，登录失败!自动返回上一级。\n");
                sl(2000);
                goto bbegin;
            }
            else {
                Print_pdding();
                printf("查无此人，登录失败，自动返回上一级。\n");
                sl(2000);
                goto bbegin;
            }
            break;
        }
        case 2: {//tealogin
            cls;
            if (time(0) < UPDATE) {//维护中
                printf("系统维护中，除管理员外均无法登录系统。");
                sl(3000);
                goto bbegin;
            }
            Print_pdding();
            printf("请输入您的账号，也就是您的工号：\n");
            Print_pdding();
            scanf("%d", &opt1);
            Print_pdding();
            printf("请输入您的密码，默认是工号后六位：\n");
            Print_pdding();
            scanf("%s", arr);
            teacher* bbx = checktea(opt2, opt1, arr, teahead);
            if (opt2 == 1) {//登录成功
                time(&timer);//将谁登录写入历史
                info = localtime(&timer);
                fprintf(his, "\n%s老师%s登录", asctime(info), bbx->name);
            teabegin:
                cls;

                char* name2;
                name2 = (char*)malloc(100 * sizeof(char));
                strcpy(name2, bbx->name);
                const char* a = { "您好,您接下来的操作是:" };
                strcat(name2, a);
                Print_head();
                Print_line();
                Print_first(name2);
                for (int i = 0; i < 2; i++)
                    Print_line();
                Print_text("1.查找学生");
                for (int i = 0; i < 2; i++)
                    Print_line();
                Print_text("2.分析学生成绩");
                for (int i = 0; i < 2; i++)
                    Print_line();
                Print_text("3.受理奖项认证");
                for (int i = 0; i < 2; i++)
                    Print_line();
                Print_text("4.调整绩点算法");
                for (int i = 0; i < 2; i++)
                    Print_line();
                Print_text("5.添加新学生");
                for (int i = 0; i < 2; i++)
                    Print_line();
                Print_text("6.修改密码");
                for (int i = 0; i < 2; i++)
                    Print_line();
                Print_text("7.查看学生成绩");
                for (int i = 0; i < 2; i++)
                    Print_line();
                Print_text("8.管理课程");
                for (int i = 0; i < 2; i++)
                    Print_line();
                Print_text("9.退出登录");
                for (int i = 0; i < 2; i++)
                    Print_line();
                Print_text("0.退出系统");
                Print_tail(3);
                Print_pdding();
                free(name2);
                ck = scanf("%d", &opt1);
                if (ck == 1) {
                    switch (opt1) {//老师的选项
                    case 1: {
                    rep15:
                        cls;
                        Print_head();
                        Print_line();
                        Print_text("请输入您想查询的项目:");
                        Print_line();
                        Print_text("1.查找学号");
                        for (int i = 0; i < 2; i++)
                            Print_line();
                        Print_text("2.查找姓名(可能返回多人)");
                        for (int i = 0; i < 2; i++)
                            Print_line();
                        Print_text("0.返回上一级");
                        Print_tail(6);
                        Print_pdding();
                        ck=scanf("%d", &opt2);
                        stu* tmp = NULL;
                        if (ck == 1) {
                            switch (opt2) {
                            case 1: {
                                cls;
                                Print_pdding();
                                printf("请输入目标学号：\n");
                                Print_pdding();
                                scanf("%d", &opt1);
                                tmp = stusearch2(opt1, stuhead);
                                if (tmp != NULL)
                                    break;
                                else {
                                    Print_pdding();
                                    printf("查无此人！请重新输入!\n");
                                    scanf("%*s");
                                    sl(2000);
                                    cls;
                                    goto rep15;
                                }
                            }
                            case 2: {
                                cls;
                                char buf[40];
                                Print_pdding();
                                printf("请输入目标姓名：\n");
                                Print_pdding();
                                scanf("%s", buf);
                                tmp = stusearch1(buf, stuhead);
                                while (tmp != NULL) {
                                    opt2 = 1;
                                    cls;
                                    Print_head();
                                    Print_line();
                                    char* name0;
                                    name0 = (char*)malloc(100 * sizeof(char));
                                    strcpy(name0, tmp->name);
                                    char* xh0;
                                    xh0 = (char*)malloc(100 * sizeof(char));
                                    xh0 = intToString(tmp->xh);
                                    const char* a = { "您找到了这个学生：" };
                                    Print_first(a);
                                    Print_line();
                                    const char* b = { " 学号:" };
                                    strcat(name0, b);
                                    strcat(name0, xh0);
                                    Print_first(name0);
                                    free(name0);
                                    free(xh0);
                                    Print_line();
                                    //printf("%s %d\n",tmp->name,tmp->xh);
                                    Print_first("这个人是您要找的吗？");
                                    Print_line();
                                    Print_text("1.是");
                                    Print_line();
                                    Print_text("0.不是");
                                    Print_line();
                                    Print_tail(5);
                                    //printf("\n这个人是您要找的吗？\n1.是\n0.不是");
                                    Print_pdding();
                                    scanf("%d", &opt1);
                                    if (opt1 == 1)break;
                                    else tmp = stusearch1(buf, tmp->next);
                                }
                                if (tmp == NULL) {
                                    Print_pdding();
                                    printf("查无此人！请重新输入。\n");
                                    scanf("%*s");
                                    sl(2000);
                                    cls;
                                    goto rep15;
                                }
                                break;
                            }
                            case 0: {
                                goto teabegin;
                            }
                            default: {
                                Print_pdding();
                                printf("操作数无效，请重新输入。");
                                goto rep15;
                            }
                            }
                        }
                        else {
                            Print_pdding();
                            printf("输入不合法，请重新输入!");    
                            scanf("%*s");
                            sl(2000);
                            goto rep15;
                        }
                        cls;
                    rep18:
                        cls;
                        //stuperprr(tmp);
                        fprintf(his, "\n%s老师查询了%s", bbx->name, tmp->name);
                        char* name1;
                        name1 = (char*)malloc(100 * sizeof(char));
                        strcpy(name1, tmp->name);
                        const char* a = { "学生姓名:" };
                        const char* str = concatenateStrings(a, name1);
                        Print_head();
                        Print_line();
                        Print_first(str);
                        Print_line();
                        Print_first("您接下来的操作是:");
                        for (int i = 0; i < 2; i++)
                            Print_line();
                        Print_text("1.改Ta的密码");
                        for (int i = 0; i < 2; i++)
                            Print_line();
                        Print_text("2.撤销奖项");
                        for (int i = 0; i < 2; i++)
                            Print_line();
                        Print_text("3.添加奖项");
                        for (int i = 0; i < 2; i++)
                            Print_line();
                        Print_text("4.删除该学生");
                        for (int i = 0; i < 2; i++)
                            Print_line();
                        Print_text("5.查看该学生成绩");
                        for (int i = 0; i < 2; i++)
                            Print_line();
                        Print_text("0.返回上一级");
                        Print_tail(3);
                        Print_pdding();
                        free(name1);
                        ck = scanf("%d", &opt1);
                        if (ck == 1) {
                            switch (opt1) {
                            case 1: {
                                char buf[40], obuf[40];
                            rep17:
                                cls;
                                printf("\n");
                                Print_pdding();
                                printf("Ta原先的密码是:%s\n", tmp->pas);
                                printf("\n");
                                Print_pdding();
                                printf("请修改Ta的新密码:");
                                scanf("%s", buf);//密码输出出来变星号啊啥的，还能凹，但是我不会了
                                if (strlen(buf) < 10) {
                                    Print_pdding();
                                    printf("您的密码长度小于10，安全性不强，请重新设定。\n");
                                    sl(1000);
                                    goto rep17;
                                }
                                Print_pdding();//here
                                printf("请再输一遍保证密码正确:");
                                scanf("%s", obuf);
                                if (strcmp(buf, obuf) != 0) {
                                    Print_pdding();
                                    printf("两次密码不一致，请重新设置密码！\n");
                                    Sleep(2000);
                                    goto rep17;
                                }
                                fprintf(his, "并将Ta的密码从%s改为%s", tmp->pas, buf);
                                strcpy(tmp->pas, buf);
                                Print_pdding();
                                printf("新密码应用成功！");
                                sl(2000);
                                goto rep18;
                            }
                            case 2: {
                                chexiao:
                                if (tmp->ppri != 0) {
                                    cls;
                                    stujingprr(tmp);
                                    Print_pdding();
                                    printf("请输入撤销奖项所对应的标号:");
                                    ck = scanf("%d", &opt2);
                                    if(ck==1){
                                        jingper* kk = tmp->prize;
                                        if (opt2 == 1) {
                                            fprintf(his, "\n%s老师撤销了%s的%s的%d等奖", bbx->name, tmp->name, kk->name, kk->num);
                                            tmp->prize = tmp->prize->next;
                                            free(kk);
                                        }
                                        else {
                                            for (int i = 2; i <= tmp->ppri + 1; ++i) {
                                                if (i == opt2) {
                                                    fprintf(his, "\n%s老师撤销了%s的%s的%d等奖", bbx->name, tmp->name, kk->next->name, kk->next->num);
                                                    kk->next = kk->next->next;
                                                    break;
                                                }
                                                kk = kk->next;
                                            }
                                        }
                                    }
                                    else {
                                        Print_pdding();
                                        printf("输入不合法，请重新输入!");
                                        scanf("%*s");
                                        goto chexiao;
                                    }

                                rep21:
                                    cls;
                                    Print_pdding();
                                    printf("删除成功！\n");
                                    sl(2000);
                                    stucalc(tmp);
                                    stuhead = stusort(stuhead, cmps31);
                                    getrank(stuhead);
                                    tmp->ppri--;
                                    goto rep18;
                                }
                                else {
                                    cls;
                                    Print_pdding();
                                    printf("他没有奖项，删除失败，返回上一级。\n");
                                    sl(2000);
                                    goto rep18;
                                }
                            }
                            case 3: {
                                tmp->ppri++;
                                int x;
                                jingper* rres = (jingper*)malloc(sizeof(jingper));
                                rres->next = tmp->prize;
                                tmp->prize = rres;
                            rrep10:
                                cls;
                                printf("\n");
                                printf("\n");
                                Print_pdding();
                                printf("请输入他的获奖种类:\n");
                                printf("\n");
                                Print_pdding();
                                printf("1.竞赛      2.论文\n");
                                printf("\n");
                                Print_pdding();
                                ck = scanf("%d", &x);
                                if (ck == 1) {
                                    switch (x) {
                                    case 1: {
                                        cls;
                                        jingprr(jinghead);
                                        printf("\n");
                                        Print_pdding();
                                        printf("请按照标号选择目标竞赛:");
                                        scanf("%d", &x);
                                        jing* jkl = jingsearch(x, jinghead);
                                        if (jkl != NULL) {
                                            Print_pdding();
                                            printf("请输入几等奖:");
                                            scanf("%d", &x);
                                            strcpy(rres->name, jkl->name);
                                            rres->flg = 3 - x + ((jkl->ff == 1) ? 5 : 0) + ((jkl->flg == 'A') ? 2 : ((jkl->flg == 'C') ? 0 : 1));
                                            rres->num = x;
                                            cls;
                                            Print_pdding();
                                            printf("奖项认证成功!即将返回上一级...\n");
                                            sl(2000);
                                            fprintf(his, "\n%s老师授予%s %s的%d", arr, tmp->name, rres->name, x);//历史
                                        }
                                        else {
                                            cls;
                                            Print_pdding();
                                            printf("操作数无效。请重新输入。\n");
                                            sl(2000);
                                            goto rrep10;
                                        }
                                        break;
                                    }
                                    case 2: {
                                        cls;
                                        lunwenprr();
                                        printf("\n");
                                        printf("\n");
                                        Print_pdding();
                                        printf("论文分为六档，请输入申请人的论文是第几档：");
                                        scanf("%d", &rres->num);
                                        rres->flg = x + 9;
                                        Print_pdding();
                                        printf("请输入论文名字:");
                                        scanf("%s", rres->name);
                                        Print_pdding();
                                        printf("奖项认证成功。\n");
                                        fprintf(his, "\n%s老师授予%s %s的%d", arr, tmp->name, rres->name, rres->num);//历史
                                        break;
                                    }
                                    default: {
                                        Print_pdding();
                                        printf("操作数无效，请重新输入。");
                                        goto rrep10;
                                    }
                                           stucalc(tmp);
                                           stuhead = stusort(stuhead, cmps31);
                                           getrank(stuhead);
                                           goto rep18;
                                    }
                                }
                                else {
                                    Print_pdding();
                                    printf("输入不合法，请重新输入!");
                                    scanf("%*s");
                                    goto rrep10;
                                }
                            }
                            case 4: {
                                Print_pdding();
                                printf("删除成功。");
                                fprintf(his, "\n%s老师删除了一位学生。他的属性如下:", bbx->name);
                                fstuperprr(tmp);
                                delstu(tmp);
                                stuhead = stusort(stuhead, cmps31);
                                getrank(stuhead);
                                sl(2000);
                                goto rep18;
                            }
                            case 5: {
                                cls;
                                Print_head();
                                Print_line();
                                stuperprr(tmp);
                                fprintf(his, "\n%s老师查看了%s的成绩", bbx->name, tmp->name);
                                Print_pdding();
                                printf("您可以选择导出您的成绩至Excel表格中。\n");
                                printf("\n");
                                Print_pdding();
                                printf("1.导出.csv\n");
                                printf("\n");
                                Print_pdding();
                                printf("O.返回上一级\n");
                                Print_pdding();
                                ck=scanf("%d", &opt1);
                                if (ck == 1) {
                                    if (opt1 == 1) {
                                        stupercsvprr(tmp);
                                        Print_pdding();
                                        printf("导出成功，请注意程序非正常结束是不会有文件留下的哦！！！");
                                        fprintf(his, "并导出了");
                                        sl(2000);
                                    }
                                    goto rep18;
                                }
                                else {
                                    Print_pdding();
                                    printf("输入不合法，请重新输入!");
                                    scanf("%*s");
                                    sl(2000);
                                    goto rep18;
                                }

                                break;
                            }
                            case 0: {
                                goto teabegin;
                            }
                            default: {
                                Print_pdding();
                                printf("操作数无效。自动返回上一级。\n");
                                sl(2000);
                                goto teabegin;
                            }
                            }
                            goto teabegin;
                        }
                        else {
                            Print_pdding();
                            printf("输入不合法，请重新输入!");
                            scanf("%*s");
                            sl(2000);
                            goto rep18;
                        }
                    }
                    case 2: {//只因器学习我不会
                        Gradeprdict();
                        sl(2000);
                        goto teabegin;
                    }
                    case 3: {
                        cls;
                        if (bbx->first == NULL) {
                            printf("您没有认证申请了。\n");
                        }
                        else {
                            jingupper* tttmp = bbx->first;
                            while (tttmp != NULL) {
                            sss5:
                                Print_head();
                                Print_line();
                                Print_first("您有奖项申请。各项数据如下：");
                                Print_line();
                                char* name3;
                                name3 = (char*)malloc(100 * sizeof(char));
                                strcpy(name3, tttmp->ownername);
                                const char* a = { "申请人: " };
                                a = concatenateStrings(a, name3);
                                Print_first(a);
                                Print_line();
                                char* name4;
                                name4 = (char*)malloc(100 * sizeof(char));
                                strcpy(name4, tttmp->name);
                                const char* b = { "申请奖项: " };
                                b = concatenateStrings(b, name4);
                                Print_first(b);
                                Print_line();
                                char* name5;
                                name5 = (char*)malloc(100 * sizeof(char));
                                strcpy(name5, tttmp->ppin);
                                const char* c = { "备注: " };
                                c = concatenateStrings(c, name5);
                                Print_first(c);
                                Print_line();
                                char* str = (char*)malloc(100 * sizeof(char));
                                str = intToString(tttmp->num);
                                const char* d = { "奖项等级: " };
                                d = concatenateStrings(d, str);
                                Print_first(d);
                                Print_line();
                                free(name3);
                                free(name4);
                                free(name5);
                                free(str);
                                Print_tail(5);
                                //printf("申请人：%s 学号%d 申请奖项：%s 备注：%s 申请几等奖：%d\n",tttmp->ownername,tttmp->xh,tttmp->name,tttmp->ppin,tttmp->num);
                                Print_pdding();
                                printf("是否确有此奖项？请认真核对并输入1是0没有：\n");
                                int opt = 0;
                                Print_pdding();
                                ck=scanf("%d", &opt);
                                if (ck == 1) {
                                    printf("\n");
                                    if (opt == 1) {
                                        Print_pdding();
                                        printf("它是论文吗？1是0不是：\n");
                                        Print_pdding();
                                        scanf("%d", &opt);
                                        if (opt == 1) {//学生认证环节，
                                        rz:
                                            cls;
                                            lunwenprr();
                                            printf("\n");
                                            Print_pdding();
                                            printf("论文分为六档，申请人的论文是:");
                                            jingper* res = (jingper*)malloc(sizeof(jingper));
                                            ck = scanf("%d", &opt);
                                            if (ck == 1)
                                            {
                                                res->flg = opt + 9;
                                                strcpy(res->name, tttmp->name);
                                                res->num = tttmp->num;
                                                stu* aax = stusearch2(tttmp->xh, stuhead);
                                                res->next = aax->prize;
                                                aax->prize = res;
                                                cls;
                                                Print_pdding();
                                                printf("奖项认证成功,下一项\n");
                                                sl(2000);
                                                cls;
                                                aax->ppri++;
                                                stucalc(aax);
                                                stuhead = stusort(stuhead, cmps31);
                                                getrank(stuhead);
                                                //recalc~~~
                                            }
                                            else {
                                                Print_pdding();
                                                printf("操作数无效。请重新输入。\n");
                                                scanf("%*s");
                                                sl(2000);
                                                cls;
                                                goto rz;
                                            }
                                        }
                                        else {
                                            if (opt == 0) {
                                            mubiao:
                                                cls;
                                                jingprr(jinghead);
                                                Print_pdding();
                                                printf("请按照标号选择目标竞赛:");
                                                ck = scanf("%d", &opt);
                                                if (ck == 1) {
                                                    jing* jkl = jingsearch(opt, jinghead);
                                                    if (jkl != NULL) {
                                                        //学生认证环节
                                                        stu* aax = stusearch2(tttmp->xh, stuhead);
                                                        jingper* rres = (jingper*)malloc(sizeof(jingper));
                                                        strcpy(rres->name, jkl->name);
                                                        rres->flg = 3 - tttmp->num + ((jkl->ff == 1) ? 5 : 0) + ((jkl->flg == 'A') ? 2 : ((jkl->flg == 'C') ? 0 : 1));

                                                        rres->num = tttmp->num;

                                                        rres->next = aax->prize;
                                                        aax->prize = rres;
                                                        cls;
                                                        Print_pdding();
                                                        printf("奖项认证成功,下一项\n");
                                                        sl(2000);
                                                        cls;
                                                        aax->ppri++;
                                                        stucalc(aax);
                                                        stuhead = stusort(stuhead, cmps31);
                                                        getrank(stuhead);
                                                        fprintf(his, "\n%s老师接受了%s的认证，并同意了。", bbx->name, aax->name);//历史
                                                    }
                                                    else {
                                                        Print_pdding();
                                                        printf("操作数无效。请重新输入。\n");
                                                        sl(2000);
                                                        cls;
                                                        goto sss5;
                                                    }
                                                }
                                                else {
                                                    Print_pdding();
                                                    printf("操作数无效。请重新输入。\n");
                                                    scanf("%*s");
                                                    sl(2000);
                                                    cls;
                                                    goto mubiao;
                                                }
                                            }
                                            else {
                                                Print_pdding();
                                                printf("操作数无效。请重新输入。\n");
                                                sl(2000);
                                                cls;
                                                goto sss5;
                                            }
                                        }
                                    }
                                    else {
                                        if (opt == 0) {
                                            Print_pdding();
                                            printf("奖项已否决。\n");
                                            sl(2000);
                                            cls;
                                            fprintf(his, "\n%s老师否决了%s的认证。", bbx->name, tttmp->ownername);//历史
                                        }
                                        else {
                                            Print_pdding();
                                            printf("操作数无效，请重新输入。");
                                            goto sss5;
                                        }
                                    }
                                    tttmp = tttmp->next;
                                    free(bbx->first);
                                    bbx->first = tttmp;
                                }
                                else {
                                    Print_pdding();
                                    printf("操作数无效。请重新输入。\n");
                                    scanf("%*s");
                                    sl(2000);
                                    cls;
                                    goto sss5;
                                }

                            }
                        }
                        cls;
                        printf("辛苦老师了，没有奖项认证的申请了哦\n");
                        Sleep(3000);
                        system("cls");
                        goto teabegin;
                    }
                    case 4: {
                        cls;
                        Print_head();
                        Print_line();
                        Print_text("您想修改哪个绩点计算方式？");
                        for (int i = 0; i < 2; i++)
                            Print_line();
                        Print_text("1.成绩绩点算法");
                        for (int i = 0; i < 2; i++)
                            Print_line();
                        Print_text("2.竞赛绩点算法");
                        for (int i = 0; i < 2; i++)
                            Print_line();
                        Print_text("3.论文及学术著作的绩点算法");
                        Print_line();
                        Print_tail(5);
                        Print_pdding();
                        scanf("%d", &opt2);
                        switch (opt2) {
                        case 1: {
                            cls;
                            printf("\n");
                            printf("\n");
                            Print_pdding();
                            for (int i = 0; i < length; i++) {
                                printf("=");
                            }
                            printf("\n");
                            printf("\n");
                            for (int i = 1; i < 14; ++i) {
                                Print_pdding();
                                printf("%d:%d至%d分数段对应绩点:%.1f\n", i, point[i - 1] - 1, point[i], jidian[i]);
                            }
                            printf("\n");
                            Print_pdding();
                            for (int i = 0; i < length; i++) {
                                printf("=");
                            }
                            printf("\n");
                            Print_pdding();
                            printf("本系统绩点算法目前为分段制，分13段，每段绩点如上，请输入您想修改的部分:");
                            int opt, oopt;
                            float ooopt;
                            scanf("%d", &opt);
                            if (opt <= 0 || opt > 13) {
                                printf("绩点修改失败，段不存在，返回上一级。\n");
                                cls;
                                goto teabegin;
                            }
                            printf("\n");
                            Print_pdding();
                            printf("您想修改为多少？请对后段进行修改，先输入0-100的数字\n");
                            Print_pdding();
                            printf("再输入对应绩点(注意程序绩点计算从高到低依次进行计算):\n");
                            Print_pdding();
                            scanf("%d", &oopt);
                            Print_pdding();
                            scanf("%f", &ooopt);
                            point[opt] = oopt; jidian[opt] = ooopt;
                            Print_pdding();
                            printf("绩点修改成功，自动返回上一级...\n");
                            sl(2000);
                            fprintf(his, "\n%s老师调整了绩点的计算方式，老的绩点算法为：", bbx->name);//历史
                            for (int i = 1; i < 14; ++i) {
                                fprintf(his, "\n%d %d %.1f", point[i - 1] - 1, point[i], jidian[i]);
                            }
                            fprintf(his, "\n新的为：");
                            for (int i = 1; i < 14; ++i) {
                                fprintf(his, "\n%d %d %.1f", point[i - 1] - 1, point[i], jidian[i]);
                            }

                            sturecalc(stuhead);//算绩点
                            stusort(stuhead, cmps31);
                            getrank(stuhead);//算排名

                            goto teabegin;
                        }
                        case 2: {
                            float opt3;
                            cls;
                            jingsaiprr();
                            Print_pdding();
                            printf("本系统的竞赛档次分为五档，您可以更改其中的权重\n");//这里是竞赛的简介
                            Print_pdding();
                            printf("当前竞赛绩点加分为:\n");
                            Print_pdding();
                            printf("1:%.3f\n", 2 * jingji[6]);
                            Print_pdding();
                            printf("2:%.3f \n", 2 * jingji[7]);
                            Print_pdding();
                            printf("3:%.3f \n", 2 * jingji[8]);
                            Print_pdding();
                            printf("4:%.3f \n", 2 * jingji[9]);
                            Print_pdding();
                            printf("5:%.3f\n", 2 * jingji[10]);
                            printf("\n");
                            Print_pdding();
                            printf("请输入想修改的档次和对应的修改后的结果:\n");
                            Print_pdding();
                            scanf("%d", &opt1);
                            Print_pdding();
                            scanf("%f", &opt3);
                            if (opt1 <= 0 || opt1 > 5) {
                                Print_pdding();
                                printf("对应档次不存在，修改失败，自动返回上一级...");
                                sl(2000);
                                goto teabegin;
                            }
                            Print_pdding();
                            printf("修改成功。自动返回上一级...");
                            fprintf(his, "\n%s调整了竞赛对应的绩点算法，老的绩点竞赛数据为：", bbx->name);
                            for (int i = 6; i < 11; ++i) {
                                fprintf(his, "%.3f ", jingji[i]);
                            }
                            jingji[opt1 + 5] = opt3 / 2;
                            fprintf(his, "\n新的绩点竞赛数据为：");
                            for (int i = 6; i < 11; ++i) {
                                fprintf(his, "%.3f ", jingji[i]);
                            }

                            sturecalc(stuhead);//算绩点
                            stusort(stuhead, cmps31);
                            getrank(stuhead);//算排名

                            goto teabegin;
                        }
                        case 3: {
                            float opt3;
                            cls;
                            lunwenprr();
                            printf("\n");
                            Print_pdding();
                            printf("本系统的论文档次分为六档，您可以更改其中的权重。\n");
                            Print_pdding();
                            printf("当前竞赛绩点加分为: \n");
                            Print_pdding();
                            printf("1: %.3f\n", jingji[0]);
                            Print_pdding();
                            printf("2: %.3f\n", jingji[1]);
                            Print_pdding();
                            printf("3: %.3f\n", jingji[2]);
                            Print_pdding();
                            printf("4: %.3f\n", jingji[3]);
                            Print_pdding();
                            printf("5: %.3f\n", jingji[4]);
                            Print_pdding();
                            printf("6: %.3f\n", jingji[5]);
                            Print_pdding();
                            printf("请输入想修改的档次和对应的修改后的结果:\n");
                            Print_pdding();
                            scanf("%d", &opt1);
                            Print_pdding();
                            scanf("%f", &opt3);
                            if (opt1 <= 0 || opt1 > 6) {
                                Print_pdding();
                                printf("对应档次不存在，修改失败，自动返回上一级...");
                                sl(2000);
                                goto teabegin;
                            }
                            Print_pdding();
                            printf("修改成功。自动返回上一级...");
                            fprintf(his, "\n%s调整了论文对应的绩点算法，老的论文绩点数据为：", bbx->name);
                            for (int i = 0; i < 6; ++i) {
                                fprintf(his, "%.3f ", jingji[i]);
                            }
                            jingji[opt1 - 1] = opt3;
                            fprintf(his, "\n新的论文绩点数据为：");
                            for (int i = 0; i < 6; ++i) {
                                fprintf(his, "%.3f ", jingji[i]);
                            }

                            sturecalc(stuhead);//算绩点
                            stusort(stuhead, cmps41);
                            getrank(stuhead);//算排名

                            goto teabegin;
                        }
                        default: {
                            printf("输入不合法。绩点调整失败，返回上一级...");
                            sl(2000);
                            goto teabegin;
                        }
                        }
                        goto teabegin;
                        break;
                    }
                    case 5: {
                        newstu(bbx->name);
                        fprintf(his, "\n%s老师添加了新学生", bbx->name);
                        stuhead = stusort(stuhead, cmps31);
                        getrank(stuhead);
                        goto teabegin;
                    }
                    case 6: {
                        char buf[40], obuf[40];
                    rep2:
                        cls;
                        memset(buf, 0, sizeof(buf));
                        memset(obuf, 0, sizeof(obuf));//密，密码过长咋办？？？
                        Print_pdding();
                        printf("请输入您的新密码：\n");//数字啊字符判定啊啥的，还能凹，但是没啥必要
                        Print_pdding();
                        scanf("%s", buf);//密码输出出来变星号啊啥的，还能凹，但是我不会了
                        if (strlen(buf) < 10) {
                            Print_pdding();
                            printf("您的密码长度小于10，安全性不强，请重新设定。\n");
                            sl(2000);
                            goto rep2;
                        }
                        Print_pdding();
                        printf("请再输一遍保证密码正确：\n");
                        Print_pdding();
                        scanf("%s", obuf);
                        if (strcmp(buf, obuf) != 0) {
                            Print_pdding();
                            printf("两次密码不一致，请重新设置密码！\n");
                            Sleep(2000);
                            system("cls");
                            goto rep2;
                        }
                        fprintf(his, "\n%s修改了他的密码：\n%s变动为%s", bbx->name, bbx->pas, buf);//历史
                        strcpy(bbx->pas, buf);
                        printf("新密码应用成功！\n");
                        sl(3000);
                        cls;
                        goto teabegin;
                        break;
                    }
                    case 9: {
                        fprintf(his, "\n%s退出了登录", bbx->name);
                        goto bbegin;
                    }
                    case 8: {
                        if (bbx->tn != 0) {
                        rep11:
                            cls;
                            Print_head();
                            Print_line();
                            Print_first("您目前所教课程都有:");
                            Print_line();
                            teacouprr(bbx);
                            Print_pdding();
                            printf("请输入课程前面的序号以对其进行操作:");
                            scanf("%d", &opt1);


                            choose* ttmp = bbx->teach;
                            Course* tmp = NULL;

                            for (int i = 1; ttmp != NULL; ++i) {
                                if (i == opt1) {
                                    tmp = ttmp->tar;
                                    break;
                                }
                                ttmp = ttmp->next;
                            }
                            //Course *tmp=cousearch1(couhead,opt1);
                            if (tmp != NULL) {//课程，大界面
                                fprintf(his, "\n%s老师管理了%s课程：", bbx->name, tmp->name);
                            classbegin:
                                cls;
                                Print_head();
                                Print_line();
                                Print_text("1.查看同学成绩");
                                for (int i = 0; i < 2; i++)
                                    Print_line();
                                Print_text("2.更改平时分考试分比例");
                                for (int i = 0; i < 2; i++)
                                    Print_line();
                                Print_text("3.发布通知");
                                for (int i = 0; i < 2; i++)
                                    Print_line();
                                //
                                Print_text("4.撤销通知");
                                for (int i = 0; i < 2; i++)
                                    Print_line();
                                //
                                Print_text("0.返回上一级");
                                Print_tail(5);
                                Print_pdding();
                                printf("当前平时分考试分比例为%d:%d\n", tmp->Daily, tmp->Text);
                                printf("\n");
                                Print_pdding();
                                printf("请输入您想对 %s 课程进行的操作:", tmp->name);
                                scanf("%d", &opt1);
                                switch (opt1) {
                                case 1: {
                                rep16:
                                    cls;
                                    coustuprr(tmp);
                                    printf("\n");
                                    Print_pdding();
                                    printf("请输入您想进行的操作:\n");
                                    Print_pdding();
                                    printf("1.更改学生成绩\n");
                                    Print_pdding();
                                    printf("2.导出学生成绩\n");
                                    Print_pdding();
                                    printf("3.排序后再看学生成绩\n");
                                    Print_pdding();
                                    printf("0.返回上一级\n");
                                    Print_pdding();
                                    scanf("%d", &opt1);
                                    switch (opt1) {
                                    case 1: {
                                        printf("\n");
                                        Print_pdding();
                                        printf("请输入修改对象的序号:");
                                        scanf("%d", &opt1);
                                        if (opt1 <= tmp->top && opt1 > 0) {//修改
                                            float opt10;
                                            Print_pdding();
                                            printf("请输入修改后的平时分:");
                                            scanf("%f", &opt10);
                                            if (opt10 <= 100 && opt10 >= 0) {
                                                tmp->stu[opt1].daily = opt10;
                                            }
                                            else {
                                                Print_pdding();
                                                printf("输入不合法，成绩将保持不变。\n");//我觉得这很合理啊，你是老师，不想改学生平时分想改考试分但是记不住，就只能卡评测。
                                            }
                                            Print_pdding();
                                            printf("请输入修改后的考试分:");
                                            scanf("%f", &opt10);
                                            if (opt10 <= 100 && opt10 >= 0) {
                                                tmp->stu[opt1].text = opt10;
                                            }
                                            else {
                                                Print_pdding();
                                                printf("输入不合法，成绩将保持不变。\n");//我觉得这很合理啊，你是老师，不想改学生平时分想改考试分但是记不住，就只能卡评测。
                                            }
                                            fprintf(his, "修改%s的成绩为 %.1f %.1f", tmp->stu[opt1].name, tmp->stu[opt1].daily, tmp->stu[opt1].text);
                                            tmp->stu[opt1].final = (tmp->stu[opt1].daily * tmp->Daily + tmp->stu[opt1].text * tmp->Text) / 100;
                                            stucalc(stusearch2(tmp->stu[opt1].id, stuhead));
                                            stuhead = stusort(stuhead, cmps31);
                                            getrank(stuhead);

                                        }
                                        else {
                                            Print_pdding();
                                            printf("操作数无效，返回上一级...");
                                            sl(2000);
                                            goto classbegin;
                                        }
                                        Print_pdding();
                                        printf("修改成功！\n");
                                        sl(2000);
                                        goto rep16;
                                    }
                                    case 2: {
                                        coupercsvprr(tmp);
                                        Print_pdding();
                                        printf("成功导出。温馨提示，程序非正常关闭不会有文件留下。");
                                        fprintf(his, "\n%s老师导出了%s的成绩", bbx->name, tmp->name);
                                        sl(2000);
                                        goto rep16;
                                    }
                                    case 3: {
                                    back:
                                        cls;
                                        coustuprr(tmp);
                                        Print_pdding();
                                        printf("请输入您想查看的模式:\n");
                                        Print_pdding();
                                        printf("1.按照成绩降序排列\n");
                                        Print_pdding();
                                        printf("2.按照成绩升序排列\n");
                                        Print_pdding();
                                        printf("3.按班降序排列\n");
                                        Print_pdding();
                                        printf("4.按班升序排列\n");
                                        Print_pdding();
                                        printf("5.对平时分降序排列\n");
                                        Print_pdding();
                                        printf("6.对平时分升序排列\n");
                                        Print_pdding();
                                        printf("7.对考试成绩降序排列\n");
                                        Print_pdding();
                                        printf("8.对考试成绩升序排列\n");
                                        Print_pdding();
                                        scanf("%d", &opt1);
                                        switch (opt1) {//写排序函数。
                                        case 1:coursort(tmp, cmpc11); break;
                                        case 2:coursort(tmp, cmpc12); break;
                                        case 3:coursort(tmp, cmpc21); break;
                                        case 4:coursort(tmp, cmpc22); break;
                                        case 5:coursort(tmp, cmpc31); break;
                                        case 6:coursort(tmp, cmpc32); break;
                                        case 7:coursort(tmp, cmpc41); break;
                                        case 8:coursort(tmp, cmpc42); break;
                                        default: {
                                            printf("输入有误，请重新输入！");
                                            sl(2000);
                                            goto back;
                                        }
                                        }
                                        goto rep16;
                                    }
                                    case 0: {
                                        goto classbegin;
                                    }
                                    default: {
                                        printf("输入有误，请重新输入！");
                                        sl(2000);
                                        goto rep16;
                                    }
                                    }
                                    goto rep11;
                                }
                                case 2: {
                                    Print_pdding();
                                    printf("请输入新的平时分和考试分的整数百分比例，并保持平时分加考试分和为100：\n");
                                    Print_pdding();
                                    scanf("%d", &opt1);
                                    Print_pdding();
                                    scanf("%d", &opt2);
                                    if (opt1 + opt2 != 100 || (opt1 < 0 || opt1>100)) {
                                        Print_pdding();
                                        printf("输入不合法，比例将保持不变。");
                                        sl(2000);
                                        cls;
                                        goto classbegin;
                                    }
                                    tmp->Daily = opt1; tmp->Text = opt2;
                                    Print_pdding();
                                    printf("更改成功！\n");
                                    fprintf(his, "%s调整了课程平时分考试分计算比例 %d %d", bbx->name, opt1, opt2);
                                    courperrecalc(tmp);
                                    sturecalc(stuhead);
                                    stuhead = stusort(stuhead, cmps31);
                                    getrank(stuhead);
                                    sl(2000);
                                    goto rep11;
                                }
                                case 3: {
                                    Print_pdding();
                                    printf("您只能在该课程中同时发布一条重要通知，学生登录后在界面可以看到它。\n");
                                    Print_pdding();
                                    printf("请输入您的通知：\n");
                                    Print_pdding();
                                    scanf("%s", tmp->notice);
                                    tmp->notic = 1;
                                    fprintf(his, "\n%s老师发布了通知：\n%s", bbx->name, tmp->notice);
                                    Print_pdding();
                                    printf("通知发布成功！");
                                    sl(2000);
                                    goto classbegin;
                                }
                                      //
                                case 4: {//我不会排版，您等大佬加油！
                                rep353:cls;
                                    Print_pdding();
                                    if (tmp->notic == 1) {
                                        printf("当前通知为：%s\n", tmp->notice);
                                        Print_pdding();
                                        printf("确认撤销？1是0保留：\n");
                                        Print_pdding();
                                        scanf("%d", &opt2);
                                        if (opt2 == 1) {
                                            tmp->notic = 0;
                                            fprintf(his, "\n%s老师撤销了通知：\n%s", bbx->name, tmp->notice);
                                            Print_pdding();
                                            printf("通知撤销成功！");
                                            sl(2000);
                                        }
                                        else {
                                            if (opt2 == 0) {
                                                printf("通知已保留。");
                                                sl(2000);
                                            }
                                            else {
                                                printf("操作数无效，请重新输入。\n");
                                                goto rep353;
                                            }
                                        }
                                    }
                                    else {
                                        printf("该课程没有发布通知。自动返回上一级。\n");
                                        sl(2000);
                                    }
                                    goto classbegin;
                                }
                                      //
                                case 0: {
                                    goto teabegin;
                                }
                                default: {
                                    printf("输入有误，请重新输入!");
                                    sl(2000);
                                    goto rep11;
                                }
                                }
                                //结束课程操作
                            }
                            else {
                                Print_pdding();
                                printf("输入有误，请重新输入。");
                                sl(2000);
                                cls;
                                goto rep11;
                            }
                        }
                        else {
                            Print_pdding();
                            printf("您没有教的课程。自动返回上一级...");
                            sl(2000);
                        }
                        goto teabegin;
                    }
                    case 7: {
                    rep34:
                        cls;
                        stuprr(stuhead);
                        Print_pdding();
                        printf("请选择您想查看的模式:\n");
                        Print_pdding();
                        printf("1.按照推免规则降序\n");
                        Print_pdding();
                        printf("2.按照平均绩点降序\n");
                        Print_pdding();
                        printf("3.按照班级排序，班内按照推免规则降序\n");
                        Print_pdding();
                        printf("4.按照班级排序，班内按平均绩点降序\n");
                        Print_pdding();
                        printf("5.按照学号排序\n");
                        Print_pdding();
                        printf("6.导出所有学生成绩\n");
                        Print_pdding();
                        printf("0.返回上一级\n");
                        Print_pdding();
                        scanf("%d", &opt1);
                        switch (opt1) {
                        case 1: {
                            stuhead = stusort(stuhead, cmps31);
                            break;
                        }
                        case 2: {
                            stuhead = stusort(stuhead, cmps41);
                            break;
                        }
                        case 3: {
                            stuhead = stusort(stuhead, cmps22);
                            break;
                        }
                        case 4: {
                            stuhead = stusort(stuhead, cmps21);
                            break;
                        }
                        case 5: {
                            stuhead = stusort(stuhead, cmps10);
                            break;
                        }
                        case 6: {
                            stucsvprr(stuhead);
                            printf("导出成功!");
                            sl(2000);
                        }
                        case 0: {
                            goto teabegin;
                        }
                        }
                        goto rep34;
                    }
                    case 0: {
                        fprintf(his, "\n%s退出了登录", bbx->name);
                        goto eend;
                    }
                    default: {
                        Print_pdding();
                        printf("输入不合法，请重新输入。");
                        sl(2000);
                        goto teabegin;
                        break;
                    }
                    }
                }
                else {
                    Print_pdding();
                    printf("输入有误！请重新输入!");
                    scanf("%*s");
                    sl(2000);
                    goto teabegin;
                }
            }
            else if (opt2 == 0) {
                printf("密码错误，登录失败，自动返回上一级。\n");
                sl(2000);
                goto bbegin;
            }
            else {
                Print_pdding();
                printf("查无此人，登录失败，自动返回上一级。\n");
                sl(2000);
                goto bbegin;
            }
            break;
        }
        case 3: {
            cls;
            unsigned long long ko = 0;
            Print_pdding();
            printf("请输入您的账号：\n");
            Print_pdding();
            scanf("%llu", &ko);
            Print_pdding();
            printf("请输入您的密码：\n");
            Print_pdding();
            scanf("%s", arr);
            adm* ccx = checkadm(opt2, ko, arr, admhead);
            if (opt2 == 1) {//登录成功
                time(&timer);//将谁登录写入历史
                info = localtime(&timer);
                fprintf(his, "\n%s管理员%s登录", asctime(info), ccx->name);
            admbegin:
                cls;
                char* name3;
                name3 = (char*)malloc(100 * sizeof(char));
                strcpy(name3, ccx->name);
                const char* a = { "管理员: " };
                a = concatenateStrings(a, name3);
                a = concatenateStrings(a, " 您好！");
                Print_head();
                Print_line();
                Print_first(a);
                Print_line();
                Print_text("1.管理学生");
                for (int i = 0; i < 2; i++)
                    Print_line();
                Print_text("2.管理老师");
                for (int i = 0; i < 2; i++)
                    Print_line();
                Print_text("3.管理课程");
                for (int i = 0; i < 2; i++)
                    Print_line();
                Print_text("4.修改密码");
                for (int i = 0; i < 2; i++)
                    Print_line();
                Print_text("5.设定系统维护时间");
                for (int i = 0; i < 2; i++)
                    Print_line();
                Print_text("6.调整竞赛等级");
                for (int i = 0; i < 2; i++)
                    Print_line();
                Print_text("7.退出登录");
                for (int i = 0; i < 2; i++)
                    Print_line();
                Print_text("0.退出系统");




                Print_tail(5);
                Print_pdding();
                free(name3);
                ck=scanf("%d", &opt1);
                if(ck==1){
                    switch (opt1) {//管理员的选项
                    case 1: {
                    rep2233:
                        cls;
                        stuprr(stuhead);
                        Print_pdding();
                        printf("输入序号以对其进行管理:");
                        scanf("%d", &opt1);
                        stu* tmp = stusearch3(opt1, stuhead);
                        if (tmp == NULL) {
                            printf("非法输入，请重新输入！\n");
                            sl(2000);
                            goto rep2233;
                        }
                    rep88:
                        cls;
                        Print_head();
                        Print_line();
                        stuperprr(tmp);
                        fprintf(his, "\n管理员%s查询了%s", ccx->name, tmp->name);
                        char* name1;
                        name1 = (char*)malloc(100 * sizeof(char));
                        strcpy(name1, tmp->name);
                        const char* a = { "学生姓名:" };
                        const char* str = concatenateStrings(a, name1);
                        Print_head();
                        Print_line();
                        Print_first(str);
                        Print_line();
                        Print_first("您接下来的操作是:");
                        for (int i = 0; i < 2; i++)
                            Print_line();
                        Print_text("1.改Ta的密码");
                        for (int i = 0; i < 2; i++)
                            Print_line();
                        Print_text("2.撤销奖项");
                        for (int i = 0; i < 2; i++)
                            Print_line();
                        Print_text("3.添加奖项");
                        for (int i = 0; i < 2; i++)
                            Print_line();
                        Print_text("4.删除该学生");
                        for (int i = 0; i < 2; i++)
                            Print_line();
                        Print_text("5.管理Ta的选课");
                        for (int i = 0; i < 2; i++)
                            Print_line();
                        Print_text("6.添加选课");
                        for (int i = 0; i < 2; i++)
                            Print_line();
                        Print_text("0.返回上一级");
                        Print_tail(3);
                        Print_pdding();
                        free(name1);
                        ck==scanf("%d", &opt1);
                        if (ck == 1) {
                            switch (opt1) {
                            case 1: {
                                char buf[40], obuf[40];
                            rep77:
                                cls;
                                printf("\n");
                                Print_pdding();
                                printf("Ta原先的密码是:%s\n", tmp->pas);
                                printf("\n");
                                Print_pdding();
                                printf("请修改Ta的新密码:");
                                scanf("%s", buf);//密码输出出来变星号啊啥的，还能凹，但是我不会了
                                if (strlen(buf) < 10) {
                                    Print_pdding();
                                    printf("您的密码长度小于10，安全性不强，请重新设定。\n");
                                    sl(1000);
                                    goto rep77;
                                }
                                cls;
                                Print_pdding();
                                printf("请再输一遍保证密码正确：");
                                scanf("%s", obuf);
                                if (strcmp(buf, obuf) != 0) {
                                    Print_pdding();
                                    printf("两次密码不一致，请重新设置密码！\n");
                                    Sleep(2000);
                                    goto rep77;
                                }
                                fprintf(his, "并将Ta的密码从%s改为%s", tmp->pas, buf);
                                strcpy(tmp->pas, buf);
                                Print_pdding();
                                printf("新密码应用成功！");
                                sl(2000);
                                goto rep88;
                            }
                            case 2: {
                                cls;
                                if (tmp->ppri != 0) {
                                    stujingprr(tmp);
                                    Print_pdding();
                                    printf("请输入撤销奖项所对应的标号:");
                                    scanf("%d", &opt2);
                                    jingper* kk = tmp->prize;
                                    if (opt2 == 1) {
                                        tmp->prize = tmp->prize->next;
                                        free(kk);
                                    }
                                    else {
                                        for (int i = 2; i <= tmp->ppri + 1; ++i) {
                                            if (i == opt2) {
                                                fprintf(his, "\n%s老师撤销了%s的%s的%d等奖", ccx->name, tmp->name, kk->next->name, kk->next->num);
                                                kk->next = kk->next->next;
                                                break;
                                            }
                                            kk = kk->next;
                                        }
                                    }
                                    Print_pdding();
                                    printf("删除成功!\n");
                                    tmp->ppri--;

                                    stucalc(tmp);
                                    stuhead = stusort(stuhead, cmps31);
                                    getrank(stuhead);
                                    sl(2000);
                                    goto rep88;
                                }
                                else {
                                    cls;
                                    Print_pdding();
                                    printf("他没有奖项，删除失败，返回上一级。\n");
                                    sl(2000);
                                    goto rep88;
                                }
                            }
                            case 3: {
                                tmp->ppri++;
                                int x;
                                jingper* rres = (jingper*)malloc(sizeof(jingper));
                                rres->next = tmp->prize;
                                tmp->prize = rres;
                            rrep18:
                                cls;
                                printf("\n");
                                printf("\n");
                                Print_pdding();
                                printf("请输入他的获奖种类:\n");
                                printf("\n");
                                Print_pdding();
                                printf("1.竞赛      2.论文\n");
                                printf("\n");
                                Print_pdding();
                                scanf("%d", &x);
                                switch (x) {
                                case 1: {
                                    cls;
                                    jingprr(jinghead);
                                    printf("\n");
                                    Print_pdding();
                                    printf("请按照标号选择目标竞赛:");
                                    scanf("%d", &x);
                                    jing* jkl = jingsearch(x, jinghead);
                                    if (jkl != NULL) {
                                        Print_pdding();
                                        printf("请输入几等奖:");
                                        scanf("%d", &x);
                                        if (x > 3 || x < 0) {
                                            printf("输入有误！请重新输入。\n");
                                            sl(2000);
                                            goto rrep18;
                                        }
                                        strcpy(rres->name, jkl->name);
                                        rres->flg = 3 - x + ((jkl->ff == 1) ? 5 : 0) + ((jkl->flg == 'A') ? 2 : ((jkl->flg == 'C') ? 0 : 1));
                                        rres->num = x;
                                        cls;
                                        Print_pdding();
                                        printf("奖项认证成功!即将返回上一级...\n");
                                        sl(2000);
                                        fprintf(his, "\n%s管理员授予%s %s的%d", arr, tmp->name, rres->name, x);//历史
                                    }
                                    else {
                                        cls;
                                        Print_pdding();
                                        printf("输入有误！请重新输入。\n");
                                        sl(2000);
                                        goto rrep18;
                                    }
                                    break;
                                }
                                case 2: {
                                    cls;
                                    lunwenprr();
                                    printf("\n");
                                    printf("\n");
                                    Print_pdding();
                                    printf("论文分为六档，请输入申请人的论文是第几档：");
                                    scanf("%d", &rres->num);
                                    rres->flg = x + 9;
                                    Print_pdding();
                                    printf("请输入论文名字:");
                                    scanf("%s", rres->name);
                                    Print_pdding();
                                    printf("奖项认证成功。\n");
                                    sl(2000);
                                    stucalc(tmp);
                                    stuhead = stusort(stuhead, cmps31);
                                    getrank(stuhead);
                                    fprintf(his, "\n%s管理员授予%s %s的%d", arr, tmp->name, rres->name, rres->num);//历史
                                    break;
                                }
                                default: {
                                    cls;
                                    Print_pdding();
                                    printf("输入有误！请重新输入。\n");
                                    sl(2000);
                                    goto rrep18;
                                }
                                }
                                stucalc(tmp);
                                goto rep88;
                            }
                            case 4: {
                                cls;
                                Print_pdding();
                                printf("删除成功!\n");
                                fprintf(his, "\n管理员%s删除了一位学生。他的属性如下:", ccx->name);
                                fstuperprr(tmp);
                                delstu(tmp);
                                stuhead = stusort(stuhead, cmps31);
                                getrank(stuhead);
                                sl(2000);
                                goto admbegin;
                            }
                            case 5: {
                                cls;
                                opt1 = 1;
                                float res = 0;
                                printf("\n");
                                printf("\n");
                                Print_pdding();
                                for (int i = 0; i < length; i++) {
                                    printf("=");
                                }
                                printf("\n");
                                printf("\n");

                                for (choose* ui = tmp->first; ui != NULL; opt1++, ui = ui->next) {
                                    opt2 = courstusearch1(ui->tar, tmp->xh, res);
                                    Print_pdding();
                                    printf("%d\t%s\t%.1f\t%.1f\t%.1f\n", opt1, ui->tar->name, ui->tar->stu[opt2].daily, ui->tar->stu[opt2].text, res);
                                    printf("\n");
                                }
                                printf("\n");
                                Print_pdding();
                                for (int i = 0; i < length; i++) {
                                    printf("=");
                                }
                                printf("\n");
                                Print_pdding();
                                printf("请输入标号以便进行修改:");
                                scanf("%d", &opt1);
                                Course* ccou = NULL; int i = 1;
                                for (choose* kkk = tmp->first; kkk != NULL; kkk = kkk->next, ++i) {
                                    if (i == opt1) {
                                        ccou = kkk->tar;
                                        break;
                                    }
                                }
                                //Course * ccou=cousearch1(couhead,opt1);
                            rep87:
                                cls;
                                printf("\n");
                                Print_pdding();
                                printf("%s\t%.1\t %.1f\t%.1f\n", ccou->name, ccou->stu[opt2].daily, ccou->stu[opt2].text, res);
                                Print_head();
                                Print_line();
                                Print_text("1.修改成绩");
                                Print_line();
                                Print_text("2.删除选课");
                                Print_line();
                                Print_text("0.返回上一级");
                                Print_tail(3);
                                Print_pdding();
                                printf("请输入您想对学生指定课程成绩进行的操作:");
                                scanf("%d", &opt1);
                                switch (opt1) {
                                case 1: {
                                    float opt10;
                                    Print_pdding();
                                    printf("请输入修改后的平时分:");
                                    scanf("%f", &opt10);
                                    if (opt10 <= 100 && opt10 >= 0) {
                                        ccou->stu[opt2].daily = opt10;
                                    }
                                    else {
                                        Print_pdding();
                                        printf("输入不合法，成绩将保持不变。\n");//我觉得这很合理啊，你是老师，不想改学生平时分想改考试分但是记不住，就只能卡评测。
                                    }
                                    Print_pdding();
                                    printf("请输入修改后的考试分:");
                                    scanf("%f", &opt10);
                                    if (opt10 <= 100 && opt10 >= 0) {
                                        ccou->stu[opt2].text = opt10;
                                    }
                                    else {
                                        Print_pdding();
                                        printf("输入不合法，成绩将保持不变。\n");//我觉得这很合理啊，你是老师，不想改学生平时分想改考试分但是记不住，就只能卡评测。
                                    }
                                    fprintf(his, "修改%s的成绩为 %.1f %.1f", ccou->stu[opt2].name, ccou->stu[opt2].daily, ccou->stu[opt2].text);
                                    ccou->stu[opt2].final = (ccou->stu[opt2].daily * ccou->Daily + ccou->stu[opt2].text * ccou->Text) / 100;
                                    Print_pdding();
                                    printf("修改成功！\n");
                                    stucalc(tmp);
                                    stuhead = stusort(stuhead, cmps31);
                                    getrank(stuhead);
                                    sl(2000);
                                    goto rep87;
                                }
                                case 2: {
                                    Print_pdding();
                                    printf("删除成功。\n");
                                    sl(2000);
                                    ccou->stu[opt2] = ccou->stu[ccou->top];
                                    ccou->top--;
                                    tmp->choo--;
                                    fprintf(his, "\n管理员%s删除了%s的%s选课，成绩 %.1f %.1f", ccx->name, tmp->name, ccou->name, ccou->stu[opt2].daily, ccou->stu[opt2].text);
                                    if (tmp->first->tar == ccou) {
                                        tmp->first = tmp->first->next;
                                        stucalc(tmp);
                                        stuhead = stusort(stuhead, cmps31);
                                        getrank(stuhead);
                                        goto admbegin;
                                    }
                                    for (choose* ko = tmp->first; ko->next != NULL; ko = ko->next) {
                                        if (ko->next->tar == ccou) {
                                            ko->next = ko->next->next;
                                            stucalc(tmp);
                                            stuhead = stusort(stuhead, cmps31);
                                            getrank(stuhead);
                                            break;
                                        }
                                    }
                                    //goto rep87;

                                    goto admbegin;
                                }
                                case 0: {
                                    goto admbegin;
                                }
                                default: {
                                    Print_pdding();
                                    printf("输入有误，请重新输入。\n");
                                    sl(2000);
                                    cls;
                                    goto rep87;
                                }
                                }
                            }
                            case 6: {
                            rep114:cls;
                                Print_pdding();
                                printf("请输入你想添加的课程名(注意请不要与原有课程冲突):\n");
                                char buf[100];
                                Print_pdding();
                                scanf("%s", buf);
                                choose* yu = (choose*)malloc(sizeof(choose));
                                yu->tar = coursearch1(couhead, buf);
                                if (yu->tar == NULL) {
                                    Print_pdding();
                                    printf("该课程不存在！请重新输入。\n");
                                    sl(2000);
                                    goto rep114;
                                }
                                yu->next = tmp->first;
                                tmp->first = yu;
                                yu->tar->top++;

                                strcpy(yu->tar->stu[yu->tar->top].name, tmp->name);
                                yu->tar->stu[yu->tar->top].id = tmp->xh;
                                Print_pdding();
                                printf("请输入平时分:");
                                scanf("%f", &yu->tar->stu[yu->tar->top].daily);

                                Print_pdding();
                                printf("请输入考试分:");
                                scanf("%f", &yu->tar->stu[yu->tar->top].text);

                                yu->tar->stu[yu->tar->top].final = (yu->tar->stu[yu->tar->top].daily * yu->tar->Daily + yu->tar->Text * yu->tar->stu[yu->tar->top].text) / 100;
                                stucalc(tmp);
                                stuhead = stusort(stuhead, cmps31);
                                getrank(stuhead);
                                Print_pdding();
                                printf("新课程添加成功!");
                                fprintf(his, "%s添加了%s的新科目%s，并赋值为%f %f", ccx->name, tmp->name, yu->tar->name, yu->tar->stu[yu->tar->top].daily, yu->tar->stu[yu->tar->top].text);
                                sl(2000);
                                goto admbegin;
                            }
                            case 0: {
                                goto admbegin;
                            }
                            default: {
                                Print_pdding();
                                printf("输入有误，请重新输入。\n");
                                sl(2000);
                                goto admbegin;
                            }
                            }
                            goto admbegin;
                        }
                        else {
                            Print_pdding();
                            printf("输入有误，请重新输入。\n");
                            sl(2000);
                            scanf("%*s");
                            goto rep88;
                        }
                    }
                    case 2: {
                    rep99:
                        cls;
                        Print_head();
                        Print_line();
                        Print_text("1.查找老师");
                        for (int i = 0; i < 3; i++)
                            Print_line();
                        Print_text("2.添加老师");
                        for (int i = 0; i < 3; i++)
                            Print_line();
                        Print_text("0.返回上一级");
                        Print_line();
                        Print_tail(5);
                        Print_pdding();
                        printf("您接下来的操作是:");
                        scanf("%d", &opt2);
                        switch (opt2) {
                        case 1: {
                            cls;
                            teaprr(teahead);
                            Print_pdding();
                            printf("请选择您想查找的老师的序号:");
                            scanf("%d", &opt2);
                            teacher* tmp = teasearch2(opt2, teahead);
                            cls;
                            char* name1;
                            name1 = (char*)malloc(100 * sizeof(char));
                            strcpy(name1, tmp->name);
                            const char* a = { "老师姓名:" };
                            const char* str = concatenateStrings(a, name1);
                        here:
                            cls;
                            Print_head();
                            Print_line();
                            Print_first(str);
                            Print_line();
                            Print_first("您接下来的操作是:");
                            Print_line();
                            Print_text("1.添加所教科目");
                            for (int i = 0; i < 2; ++i)
                                Print_line();
                            Print_text("2.删除老师");
                            for (int i = 0; i < 2; ++i)
                                Print_line();
                            Print_text("3.删除所教科目");
                            for (int i = 0; i < 2; ++i)
                                Print_line();
                            Print_text("4.更改老师密码");
                            for (int i = 0; i < 2; ++i)
                                Print_line();
                            Print_text("0.返回上一级");
                            for (int i = 0; i < 2; ++i)
                                Print_line();
                            Print_tail(5);
                            Print_pdding();
                            scanf("%d", &opt1);
                            switch (opt1) {
                            case 1: {
                                char arr[100];
                                cls;
                                Print_pdding();
                                printf("请输入课程名称:");
                                scanf("%s", arr);
                                choose* rrres = (choose*)malloc(sizeof(choose));
                                rrres->tar = coursearch1(couhead, arr);
                                choose* io = tmp->teach;
                                for (; io != NULL; io = io->next) {
                                    if (io->tar == rrres->tar) {
                                        Print_pdding();
                                        printf("所教课程重合，录入失败。");
                                        sl(2000);
                                        goto admbegin;
                                    }
                                }
                                //rrres->next=io->next;
                                //io->next=rrres;
                                rrres->next = io;
                                tmp->teach = rrres;
                                tmp->tn++;
                                Print_pdding();
                                printf("录入成功。\n");
                                sl(2000);
                                goto here;
                            }
                            case 2: {
                                if (tmp == teahead) {
                                    fprintf(his, "管理%s删除了%s老师", ccx->name, tmp->name);
                                    teahead = teahead->next;
                                }
                                else {
                                    fprintf(his, "管理%s删除了%s老师", ccx->name, tmp->name);
                                    for (teacher* ui = teahead; ui->next != NULL; ui = ui->next) {
                                        if (ui->next == tmp) {
                                            ui->next = ui->next->next;
                                            break;
                                        }
                                    }
                                }
                                printf("删除成功。\n");
                                sl(2000);
                                goto admbegin;
                            }
                            case 3: {
                                if (tmp->teach == NULL) {
                                    Print_pdding();
                                    printf("未找到Ta的教课程，删除失败。");
                                    sl(2000);
                                    goto rep99;
                                }
                                opt1 = 1;
                                cls;
                                Print_head();
                                Print_line();
                                Print_first("他所教课程有:");
                                //printf("他所教课程有：\n");
                                for (choose* ppo = tmp->teach; ppo != NULL; ppo = ppo->next, ++opt1) {
                                    char* name1;
                                    name1 = (char*)malloc(100 * sizeof(char));
                                    strcpy(name1, ppo->tar->name);
                                    char* a = intToString(opt1);
                                    strcat(a, ". ");
                                    const char* str = concatenateStrings(a, name1);
                                    Print_line();
                                    Print_text(str);
                                    free(name1);
                                    //printf("%d %s\n",opt1,ppo->tar->name);
                                }
                                Print_tail(2);
                                Print_pdding();
                                printf("请选择标号确定课程:");
                                scanf("%d", &opt1);
                                if (opt1 == 1) {
                                    fprintf(his, "\n管理员%s删除了%s老师的%s课程授课权限。", ccx->name, tmp->name, tmp->teach->tar);
                                    tmp->teach = tmp->teach->next;
                                    tmp->tn--;
                                    printf("删除成功。\n");
                                }
                                opt2 = 2;
                                for (choose* ppo = tmp->teach; ppo->next != NULL; opt2++, ppo = ppo->next) {
                                    if (opt2 == opt1) {
                                        fprintf(his, "\n管理员%s删除了%s老师的%s课程授课权限。", ccx->name, tmp->name, ppo->next->tar->name);
                                        ppo->next = ppo->next->next;
                                        tmp->tn--;
                                        printf("删除成功。\n");
                                        sl(2000);
                                        goto rep99;
                                    }
                                }
                                Print_pdding();
                                printf("输入有误，删除失败\n");
                                sl(2000);
                                goto rep99;
                            }
                            case 4: {
                                char buf[40], obuf[40];
                            rep76:
                                cls;
                                printf("\n");
                                Print_pdding();
                                printf("Ta原先的密码是:%s\n", tmp->pas);
                                printf("\n");
                                Print_pdding();
                                printf("请修改Ta的新密码:");
                                scanf("%s", buf);//密码输出出来变星号啊啥的，还能凹，但是我不会了
                                if (strlen(buf) < 10) {
                                    Print_pdding();
                                    printf("您的密码长度小于10，安全性不强，请重新设定。\n");
                                    sl(1000);
                                    goto rep76;
                                }
                                Print_pdding();
                                printf("请再输一遍保证密码正确:");
                                scanf("%s", obuf);
                                if (strcmp(buf, obuf) != 0) {
                                    Print_pdding();
                                    printf("两次密码不一致，请重新设置密码！\n");
                                    Sleep(2000);
                                    goto rep76;
                                }
                                fprintf(his, "并将Ta的密码从%s改为%s", tmp->pas, buf);
                                strcpy(tmp->pas, buf);
                                printf("新密码应用成功！");
                                sl(2000);
                                goto rep99;
                            }
                            case 0: {
                                goto admbegin;
                            }
                            default: {
                                Print_pdding();
                                printf("输入有误，请重新输入。\n");
                                sl(2000);
                                goto admbegin;
                            }
                            }
                        }
                        case 2: {
                            cls;
                            newtea(ccx->name);
                            sl(2000);
                            goto admbegin;
                        }
                        case 0: {
                            goto admbegin;
                        }
                        default: {
                            Print_pdding();
                            printf("输入有误，请重新输入。\n");
                            sl(2000);
                            goto rep99;
                        }
                        }
                        goto admbegin;
                    }
                    case 3: {
                        cls;
                        Print_head();
                        Print_line();
                        Print_text("1.添加一门新课程");
                        for (int i = 0; i < 3; i++)
                            Print_line();
                        Print_text("2.删除某课程");
                        for (int i = 0; i < 3; i++)
                            Print_line();
                        Print_text("0.返回上一级");
                        Print_line();
                        Print_tail(10);
                        Print_pdding();
                        printf("您可以选:");
                        scanf("%d", &opt1);
                        switch (opt1) {
                        case 1: {
                            cls;
                            Course* rres = (Course*)malloc(sizeof(Course));
                            rres->next = couhead;
                            couhead = rres;
                            rres->top = 0;
                            rres->notic = 0;
                            Print_pdding();
                            printf("请输入新课程名：\n");
                            Print_pdding();
                            scanf("%s", rres->name);
                            Print_pdding();
                            printf("请输入新课程编号：\n");
                            Print_pdding();
                            scanf("%s", rres->number);
                            Print_pdding();
                            printf("请输入新课程种类，必修，限选还是选修？\n");
                            Print_pdding();
                            scanf("%s", rres->type);
                            Print_pdding();
                            printf("请输入新课程学时：\n");
                            Print_pdding();
                            scanf("%d", &rres->hours);
                            Print_pdding();
                            printf("请输入新课程学分：\n");
                            Print_pdding();
                            scanf("%f", &rres->credit);
                        rep1145:
                            Print_pdding();
                            printf("请输入新课程平时分和考试占比(注意两项加和要等于一百):\n");
                            Print_pdding();
                            printf("平时分占比:");
                            scanf("%d", &rres->Daily);
                            Print_pdding();
                            printf("考试成绩占比:");
                            scanf("%d", &rres->Text);
                            if (rres->Daily + rres->Text != 100) {
                                cls;
                                Print_pdding();
                                printf("两项加和不等于一百，请重新输入。\n");
                                sl(2000);
                                goto rep1145;
                            }
                            Print_pdding();
                            printf("新课程添加成功。");
                            fprintf(his, "\n%s添加了新课程%s", ccx->name, rres->name);
                            sl(2000);
                            goto admbegin;
                        }
                        case 2: {
                            char arr[100];
                            cls;
                            Print_pdding();
                            printf("请输入需要删除的课程名称:");
                            scanf("%s", arr);
                            Course* a = couhead;
                            if (strcmp(arr, a->name) == 0) {
                                couhead = couhead->next;
                            }
                            else {
                                for (Course* b = couhead; b->next != NULL; b = b->next) {
                                    if (strcmp(b->next->name, arr) == 0) {
                                        a = b->next;
                                        b->next = a->next;
                                        break;
                                    }
                                }
                            }
                            if (a == NULL) {
                                Print_pdding();
                                printf("课程不存在！\n");
                                sl(2000);
                                goto admbegin;
                            }
                            for (int i = 1; i <= a->top; ++i) {
                                stu* ttt = stusearch2(a->stu[i].id, stuhead);
                                ttt->choo--;
                                if (ttt->first->tar == a) {
                                    ttt->first = ttt->first->next;
                                }
                                else {
                                    for (choose* tt = ttt->first; tt->next != NULL; tt = tt->next) {
                                        if (tt->next->tar == a) {
                                            tt->next = tt->next->next;
                                            break;
                                        }
                                    }
                                }
                            }
                            for (teacher* ui = teahead; ui != NULL; ui = ui->next) {
                                if (ui->teach == NULL)continue;
                                if (ui->teach->tar == a) {
                                    ui->tn--;
                                    ui->teach = ui->teach->next;
                                }
                                else {
                                    for (choose* oi = ui->teach; oi->next != NULL; oi = oi->next) {
                                        if (oi->next->tar == a) {
                                            ui->tn--;
                                            oi->next = oi->next->next;
                                            break;
                                        }
                                    }
                                }
                            }

                            free(a);
                            Print_pdding();
                            printf("课程删除成功！");
                            sl(2000);
                            sturecalc(stuhead);
                            stuhead = stusort(stuhead, cmps31);
                            getrank(stuhead);

                            goto admbegin;
                        }
                        case 0: {
                            goto admbegin;
                        }
                        default: {
                            Print_pdding();
                            printf("输入有误，请重新输入。\n");
                            sl(2000);
                            goto admbegin;
                        }
                        }
                    }
                    case 4: {
                        char buf[100], obuf[100];
                    rep56:
                        memset(buf, 0, sizeof(buf));
                        memset(obuf, 0, sizeof(obuf));//密，密码过长咋办？？？
                        Print_pdding();
                        printf("请输入您的新密码：\n");//数字啊字符判定啊啥的，还能凹，但是没啥必要
                        Print_pdding();
                        scanf("%s", buf);//密码输出出来变星号啊啥的，还能凹，但是我不会了
                        if (strlen(buf) < 10) {
                            Print_pdding();
                            printf("您的密码长度小于10，安全性不强，请重新设定。\n");
                            goto rep56;
                        }
                        Print_pdding();
                        printf("请再输一遍保证密码正确：\n");
                        Print_pdding();
                        scanf("%s", obuf);
                        if (strcmp(buf, obuf) != 0) {
                            Print_pdding();
                            printf("两次密码不一致，请重新设置密码！\n");
                            Sleep(2000);
                            system("cls");
                            goto rep56;
                        }
                        fprintf(his, "\n%s修改了他的密码：\n%s变动为%s", ccx->name, ccx->pas, buf);//历史
                        strcpy(ccx->pas, buf);
                        Print_pdding();
                        printf("新密码应用成功！\n");
                        sl(3000);
                        cls;
                        goto admbegin;
                    }
                    case 5: {
                        cls;
                        Print_pdding();
                        printf("请输入系统从现在开始维护的天数:");
                        scanf("%d", &opt1);
                        if (opt1 >= 0) {
                            Print_pdding();
                            printf("设定成功。期间只有管理员可以登录。\n");
                        }
                        else {
                            Print_pdding();
                            printf("设定失败。原有的设定将保持不变。\n");
                        }
                        UPDATE = time(0) + (long long)opt1 * 86400;
                        fprintf(his, "\n%s设定了系统维护时间为%d天", ccx->name, opt1);
                        sl(2000);
                        goto admbegin;
                    }
                    case 7: {
                        fprintf(his, "\n%s退出了登录", ccx->name);
                        goto bbegin; break;
                    }
                    case 0: {
                        fprintf(his, "\n%s退出了登录", ccx->name);
                        goto eend; break;
                    }
                    case 6: {//大佬，排版，带带
                    rep308927428:
                        cls;//只是随机的数加个前缀当段名了，真的没啥意思
                        jingprr(jinghead);
                        printf("\n");
                        Print_pdding();
                        printf("请输入需要调整竞赛等级的竞赛编号:");
                        scanf("%d", &opt1);
                        jing* jkl = jingsearch(opt1, jinghead);
                        if (jkl != NULL) {
                        rep9724506:
                            cls;
                            printf("\n");
                            for (int i = 0; i < 30; i++) {
                                printf(" ");
                            }
                            for (int i = 0; i < 100; ++i) {
                                printf("=");
                            }
                            printf("\n");
                            for (int i = 0; i < 30; i++) {
                                printf(" ");
                            }
                            printf("%s %c %d\n", jkl->name, jkl->flg);
                            for (int i = 0; i < 30; i++) {
                                printf(" ");
                            }
                            for (int i = 0; i < 100; ++i) {
                                printf("=");
                            }
                            printf("\n");
                            printf("\n");

                            Print_pdding();
                            printf("请输入调整之后的竞赛等级(输入A或B或b(代表B*)或者C):");
                            char vbnm;
                            getchar();
                            scanf("%c", &vbnm);
                            if (vbnm == 'A' || vbnm == 'B' || vbnm == 'b' || vbnm == 'C') {
                                printf("修改成功!\n");
                                fprintf(his, "\n管理员%s将%s的竞赛等级调整为%c，原来的等级为%c", ccx->name, jkl->name, vbnm, jkl->flg);//历史
                                jkl->flg = vbnm;
                                sl(2000);
                                goto admbegin;
                            }
                            else {
                                printf("操作数无效，请重新输入。");
                                sl(2000);
                                goto rep9724506;
                            }
                        }
                        else {
                            printf("操作数无效，请重新输入。");
                            sl(2000);
                            goto rep308927428;
                        }
                        goto admbegin;
                    }
                    default: {
                        Print_pdding();
                        printf("输入有误，请重新输入。");
                        sl(2000);
                        goto admbegin;
                        break;
                    }
                    }
                }
                else{
                    Print_pdding();
                    printf("输入有误!请重新输入!\n");
                    scanf("%*s");
                    sl(2000);
                    goto admbegin;
                }
                
            }
            else if (opt2 == 0) {
                Print_pdding();
                printf("密码错误，登录失败，自动返回上一级。\n");
                sl(2000);
                goto bbegin;
            }
            else {
                Print_pdding();
                printf("查无此人，登录失败，自动返回上一级。\n");
                sl(2000);
                goto bbegin;
            }
            break;
        }
        case 0: {
            goto eend;
        }
        default: {
            Print_pdding();
            printf("输入有误，请重新输入。");
            sl(2000);
            goto bbegin;
        }
        }
    }
else{
    Print_pdding();
    printf("输入有误！请重新输入!");
    scanf("%*s");
    sl(2000);
    goto bbegin;
}
    
    
    //<----------------------------------update------------------------------>
eend:
    Print_pdding();
    printf("感谢使用。");
    sl(2000);
    updjidian();
    updstu(stuhead);
    updtea(teahead);
    updcou(couhead);
    updunp(teahead);
    updupdate();
    updcomp(jinghead);
    fclose(his);
    return 0;
}