C++ 选课系统

其他 2018-05-31 05:18:14 阅读次数: 0

exe程序

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功能

  1. 选课先到先得。
  2. 具有三个登录模式，分别为教务员、老师、学生。
  3. 教务员账号 admin 密码 admin。
  4. 学生教师密码默认 0000 。
  5. 教务员无权新增课程，但可修改/删除 。
  6. 课程名最长 40 个字符 。
  7. 学生和教师姓名最长 20 个字符， 编号 8 位数（学生）6 位数（教师）自动生成且唯一 。
  8. 本程序涉及到搜索功能的仅支持编号查找 。
  9. 本程序自带各种输入检查，用户和课程名称可包含空格。
    　

开发环境

  1. Windows 10 + Visual Studio 2017 Cummunity;

设计

  1. 建立三个stl库的list容器，数据操作时通过int类型的id相互关联
  2. 教务员为control类，学生和教师继承interface类，部分差异在派生类中定义
  3. 单例模式，手动释放

体会

  1. 该实验单例模式的局限性
  2. 使用inline函数避免重定义
  3. 多个函数合体，传参选择响应功能，减少代码量
  4. 善用algorithm的find_if和find函数，find_if的第三个参数自己定义用于判断的类
  5. 限定编号位数，输入优先检查位数节省时间
  6. 注意erase后iter的变化
  7. 文件读取直接getline，避免与>>运算符混用时一些情况下存在的问题
  8. http://blog.csdn.net/shenyulv/article/details/6699836

源码

control.h

#ifndef CONTROL_H
#define CONTROL_H

#include<iostream>
#include<string>
#include<list>
#include<sstream>
#include<algorithm>
#include<conio.h>

using namespace std;

struct user {
    user(){}
    user(string Name, int Id) {
        id = Id;
        password = "0000";
        name = Name;
    }
    int id;
    string password;
    string name;
    list<int> courseId;
};

struct courseT {
    courseT(){}
    courseT(string Name, int Limit, int TeacherId, string TeacherName) {
        id = count++;
        name = Name;
        limit = Limit;
        teacherId = TeacherId;
        teacherName = TeacherName;
    }
    int id;
    string name;
    int teacherId;
    int limit;
    string teacherName;
    static int count;
    list<int> studentId;
};

//找课程
class findCourse {
public:
    findCourse(int id) :id(id) {}
    bool operator()(const courseT &p) {
        return id == p.id;
    }
private:
    int id;
};

//找用户
class findUser {
public:
    findUser(int id) :id(id) {}
    bool operator()(const user &p) {
        return id == p.id;
    }
private:
    int id;
};

class control {
public:
    //0学生，1老师
    void addUser(int p);
    //8学生，6老师，0删除，1修改密码
    void handleUser(int p, int q);
    //显示课程名和已选人数
    void diplayCourse();
    //显示个人课程
    void studentCourse();
    void teacherCourse();
    //单行布告栏
    void modifyNotice();
    //修改 显示0 课程名1 人数2 删除3
    void modifyCourse(int p);
    void save();
    //单例
    static control* getInstance();
    list<user> student;
    list<user> teacher;
    list<courseT> course;
    string notice;
private:
    int studentAmount;
    int teacherAmount;
    control();
    static control* instance;
};

#endif

control.cpp

#include<fstream>
#include<string>
#include<sstream>
#include<iostream>
#include<iomanip>
#include"control.h"
#include"global.h"
using namespace std;
int courseT::count = 10000;

control::control() {
    studentAmount = 10000000;
    teacherAmount = 100000;
    ifstream c("student.ini", ios::binary | ios::in);
    ifstream o("teacher.ini", ios::binary | ios::in);
    ifstream m("course.ini", ios::binary | ios::in);
    ifstream e("data.ini", ios::binary | ios::in);
    if (c.is_open() && o.is_open() && m.is_open() && e.is_open()) {
        while (c.peek() != EOF) {
            user tem;
            string line1, line4, line5;
            getline(c, line1);
            getline(c, tem.password);
            getline(c, tem.name);
            getline(c, line4);
            getline(c, line5);
            stringstream L1(line1), L4(line4), L5(line5);
            L1 >> tem.id;
            int size, num;
            L4 >> size;
            for (int i = 0; i < size; i++) {
                L5 >> num;
                tem.courseId.push_back(num);
            }
            student.push_back(tem);
        }
        c.close();
        while (o.peek() != EOF) {
            user tem;
            string line1, line4, line5;
            getline(o, line1);
            getline(o, tem.password);
            getline(o, tem.name);
            getline(o, line4);
            getline(o, line5);
            stringstream L1(line1), L4(line4), L5(line5);
            L1 >> tem.id;
            int size, num;
            L4 >> size;
            for (int i = 0; i < size; i++) {
                L5 >> num;
                tem.courseId.push_back(num);
            }
            teacher.push_back(tem);
        }
        o.close();
        while (m.peek() != EOF) {
            courseT tem;
            string line1, line3, line4, line6, line7;
            getline(m, line1);
            getline(m, tem.name);
            getline(m, line3);
            getline(m, line4);
            getline(m, tem.teacherName);
            getline(m, line6); 
            getline(m, line7);
            stringstream L1(line1), L3(line3), L4(line4), L6(line6), L7(line7);
            L1 >> tem.id;
            L3 >> tem.limit;
            L4 >> tem.teacherId;
            int size, num;
            L6 >> size;
            for (int i = 0; i < size; i++) {
                L7 >> num;
                tem.studentId.push_back(num);
            }
            course.push_back(tem);
        }
        m.close();
        e >> studentAmount >> teacherAmount >> courseT::count;
        string tem;
        getline(e, tem);
        getline(e, tem);
        while (e.peek() != EOF) {
            getline(e, tem);
            notice += '\n';
            notice += tem;
        }
        e.close();
    }
}
void control::save() {
    ofstream o("student.ini", ios::binary | ios::out);
    ofstream u("teacher.ini", ios::binary | ios::out);
    ofstream t("course.ini", ios::binary | ios::out);
    ofstream out("data.ini", ios::binary | ios::out);
    if (o.is_open() && u.is_open() && t.is_open() && out.is_open()) {
        for (auto &x : student) {
            o << x.id << endl << x.password << endl << x.name << endl << x.courseId.size() << endl;
            for (auto &y : x.courseId)
                o << y << " ";
            o << endl;
        }
        o.close();
        for (auto &x : teacher) {
            u << x.id << endl << x.password << endl << x.name << endl << x.courseId.size() << endl;
            for (auto &y : x.courseId)
                u << y << " ";
            u << endl;
        }
        u.close();
        for (auto &x : course) {
            t << x.id << endl << x.name << endl << x.limit << endl << x.teacherId << endl << x.teacherName << endl << x.studentId.size() << endl;
            for (auto &y : x.studentId)
                t << y << " ";
            t << endl;
        }
        t.close();
        out << studentAmount << endl << teacherAmount << endl << courseT::count << endl << notice << endl;
        out.close();
    }
    else {
        cerr << "未知错误，请联系技术员！";
        system("pause");
    }
}
//0学生，1老师
void control::addUser(int p) {
    cout << "姓名：\n";
    string name;
    getline(cin, name);
    if (name.length() == 0|| name.length() > 20) {
        cout << "输入有误！";
        return;
    }
    if (p == 0) {
        student.push_back(user(name, studentAmount++));
        cout << "添加成功！编号：" << studentAmount - 1;
    }
    else {
        teacher.push_back(user(name, teacherAmount++));
        cout << "添加成功！编号：" << teacherAmount - 1;
    }
}
//8学生，6老师，0删除，1修改密码
void control::handleUser(int p, int q) {
    cout << "学号/工号：\n";
    string idStr;
    getline(cin, idStr);
    if (idStr.length() != p) {
        cout << "输入有误！";
        return;
    }
    int id = stringToNum(idStr);
    if (id == -1) {
        cout << "输入有误！";
        return;
    }
    //学生
    if (p == 8) {
        auto iter = find_if(student.begin(), student.end(), findUser(id));
        if (iter == student.end()) {
            cout << "用户不存在";
            return;
        }
        //删除
        if (q == 0) {
            //删除课程的学生信息 iter完整学生 itor课id itar完整课
            for (auto itor = iter->courseId.begin(); itor != iter->courseId.end(); ++itor) {
                auto itar = find_if(course.begin(), course.end(), findCourse(*itor));
                itar->studentId.erase(find(itar->studentId.begin(), itar->studentId.end(), id));
            }
            //删除学生
            student.erase(iter);
            cout << "成功删除！";
        }
        //修改
        else {
            cout << "新密码：\n";
            string password;
            getline(cin, password);
            if (password.length() == 0) {
                cout << "输入有误！";
                return;
            }
            iter->password = password;
            cout << "更改成功！";
        }
    }
    //教师
    if (p == 6) {
        auto iter = find_if(teacher.begin(), teacher.end(), findUser(id));
        if (iter == teacher.end()) {
            cout << "用户不存在";
            return;
        }
        //删除
        if (q == 0) {
            //删除相关学生
            //iter老师 itor课程号 itar完整课程 itur学生编号 itir完整学生
            for (auto itor = iter->courseId.begin(); itor != iter->courseId.end(); ++itor) {
                auto itar = find_if(course.begin(), course.end(), findCourse(*itor));
                for (auto itur = itar->studentId.begin(); itur != itar->studentId.end(); ++itur) {
                    auto itir = find_if(student.begin(), student.end(), findUser(*itur));
                    itir->courseId.erase(find(itir->courseId.begin(), itir->courseId.end(), *itor));
                }
                //删除课程
                stringstream tem;
                tem << "\n课程“" << itar->name << "”（编号：" << itar->id << "）已被取消";
                notice += tem.str();
                //行数
                int p = -1, count = 0;
                while (1) {
                    p = notice.find('\n', p + 1);
                    if (p == -1)
                        break;
                    count++;
                }
                if (count == 6)
                    notice = notice.substr(notice.find('\n', 1), notice.length() - notice.find('\n', 1));
                course.erase(itar);
            }
            //删除老师
            teacher.erase(iter);
            cout << "删除成功！";
        }
        //修改
        else {
            cout << "新密码：\n";
            string password;
            getline(cin, password);
            if (password.length() == 0) {
                cout << "输入有误！";
                return;
            }
            iter->password = password;
            cout << "更改成功！";
        }
    }
}
//显示课程名和已选人数
void control::diplayCourse() {
    if (course.empty()) {
        cout << "暂无课程";
        return;
    }
    cout << "编号  课程                                     教师                 人数\n";
    //遍历
    for (auto iter = course.begin(); iter != course.end(); iter++)
        cout << iter->id << " " << left << setw(40) << iter->name << " " << left << setw(20) << iter->teacherName << " (" << iter->studentId.size() << "/" << iter->limit << ")\n";
}
//显示个人课程
void control::studentCourse() {
    cout << "学号：\n";
    string idStr;
    getline(cin, idStr);
    if (idStr.length() != 8) {
        cout << "输入有误！";
        return;
    }
    int id = stringToNum(idStr);
    if (id == -1) {
        cout << "输入有误！";
        return;
    }
    auto iter = find_if(student.begin(), student.end(), findUser(id));
    if (iter == student.end()) {
        cout << "用户不存在！";
        return;
    }
    cout << "姓名：\n" << iter->name << "\n\n";
    //显示课程
    if (iter->courseId.empty()) {
        cout << "暂无课程";
        return;
    }
    cout << "编号  课程                                     教师                 人数\n";
    //遍历
    for (auto itir = iter->courseId.begin(); itir != iter->courseId.end(); ++itir) {
        auto itor = find_if(course.begin(), course.end(), findCourse(*itir));
        cout << itor->id << " " << left << setw(40) << itor->name << " " << left << setw(20) << itor->teacherName << " (" << itor->studentId.size() << "/" << itor->limit << ")\n";
    }
}
void control::teacherCourse() {
    cout << "工号：\n";
    string idStr;
    getline(cin, idStr);
    if (idStr.length() != 6) {
        cout << "输入有误！";
        return;
    }
    int id = stringToNum(idStr);
    if (id == -1) {
        cout << "输入有误！";
        return;
    }
    auto iter = find_if(teacher.begin(), teacher.end(), findUser(id));
    if (iter == teacher.end()) {
        cout << "用户不存在！";
        return;
    }
    cout << "姓名：\n" << iter->name << "\n\n";
    //显示
    if (iter->courseId.empty()) {
        cout << "暂无课程";
        return;
    }
    cout << "编号  课程                                     人数\n";
    //遍历
    for (auto itir = iter->courseId.begin(); itir != iter->courseId.end(); ++itir) {
        auto itor = find_if(course.begin(), course.end(), findCourse(*itir));
        cout << itor->id << " " << left << setw(40) << itor->name << " (" << itor->studentId.size() << "/" << itor->limit << ")\n";
    }
}
//单行布告栏
void control::modifyNotice() {
    cout << "当前：\n" << notice << "\n\n发布：\n";
    string n;
    getline(cin, n);
    if (n.length() == 0) {
        cout << "输入有误！";
        return;
    }
    notice += '\n';
    notice += n;
    //行数
    int p = -1, count = 0;
    while (1) {
        p = notice.find('\n', p + 1);
        if (p == -1)
            break;
        count++;
    }
    if (count == 6)
        notice = notice.substr(notice.find('\n', 1), notice.length() - notice.find('\n', 1));
    cout << "发布成功！";
}
//修改 显示0 课程名1 人数2 删除3
void control::modifyCourse(int p) {
    cout << "课程编号：\n";
    string num;
    getline(cin, num);
    if (num.length() != 5) {
        cout << "输入有误！";
        return;
    }
    int id = stringToNum(num);
    if (id == -1) {
        cout << "输入有误！";
        return;
    }
    auto iter = find_if(course.begin(), course.end(), findCourse(id));
    if (iter == course.end()) {
        cout << "无此课程";
        return;
    }
    //显示
    if (p == 0) {
        cout << "编号  课程                                     教师                 人数\n";
        cout << iter->id << " " << left << setw(40) << iter->name << " " << left << setw(20) << iter->teacherName << " (" << iter->studentId.size() << "/" << iter->limit << ")\n";
    }
    //课程名
    else if (p == 1) {
        cout << "当前：\n" << iter->name << "\n\n更新：\n";
        string name;
        getline(cin, name);
        if (name.length() == 0 || name.length() > 40) {
            cout << "输入有误！";
            return;
        }
        iter->name = name;
        cout << "更改成功！";
    }
    //人数
    else if (p == 2) {
        cout << "当前：\n" << iter->limit << "\n\n更新：\n";
        string num;
        getline(cin, num);
        int n = stringToNum(num);
        if (n == -1) {
            cout << "输入有误！";
            return;
        }
        if (num.length() > 4) {
            cout << "超出人数限制！";
            return;
        }
        iter->limit = n;
        cout << "更改成功！";
    }
    //删除
    else {
        //删老师的课 itor完整老师
        auto itor = find_if(teacher.begin(), teacher.end(), findUser(iter->teacherId));
        itor->courseId.erase(find(itor->courseId.begin(), itor->courseId.end(), iter->id));
        //删学生 itur学生编号 itir完整学生
        for (auto itur = iter->studentId.begin(); itur != iter->studentId.end(); ++itur) {
            auto itir = find_if(student.begin(), student.end(), findUser(*itur));
            itir->courseId.erase(find(itir->courseId.begin(), itir->courseId.end(), iter->id));
        }
        //删除课程
        stringstream tem;
        tem << "\n课程“" << iter->name << "”（编号：" << iter->id << "）已被取消";
        notice += tem.str();
        //行数
        int p = -1, count = 0;
        while (1) {
            p = notice.find('\n', p + 1);
            if (p == -1)
                break;
            count++;
        }
        if (count == 6)
            notice = notice.substr(notice.find('\n', 1), notice.length() - notice.find('\n', 1));
        course.erase(iter);
        cout << "删除成功！";
    }
}

control* control::instance = NULL;
control* control::getInstance() {
    if (instance == NULL)
        instance = new control;
    return instance;
}

interface.h

#ifndef INTERFACE_H
#define INTERFACE_H
#include"control.h"
class Interface {
public:
    Interface(){}
    //登录
    bool login();
    //公告
    void noticeBoard();
    //改密码
    void changePassword();
protected:
    int role;
    user* me;
};

class studentInterface :public Interface {
public:
    studentInterface();
    //选课 
    void selectCourse();
    //显示课
    void displayCourse();
    //退选
    void deleteCourse();
};

class teacherInterface :public Interface {
public:
    teacherInterface();
    //显示课
    void displayCourse();
    //唯一的课程添加功能
    void addCourse();
};

#endif

global.h

#ifndef GLOBAL_H
#define GLOBAL_H

#include<conio.h>
#include<string>
#include<sstream>
using namespace std;

//┤ь╬зих╗п-1
inline int stringToNum(string source) {
    if (source.length() == 0)
        return -1;
    for (size_t i = 0; i < source.length(); i++)
        if (source[i]<'0' || source[i]>'9')
            return -1;
    stringstream s(source);
    int num;
    s >> num;
    return num;
}

inline string Password() {
    char password[100] = "\0";
    int index = 0;
    while (1) {
        char ch;
        ch = _getch();
        if (ch == 8) {
            if (index != 0) {
                std::cout << char(8) << " " << char(8);
                index--;
            }
        }
        else if (ch == '\r') {
            password[index] = '\0';
            cout << endl;
            if (password[0] != 0)
                break;
        }
        else {
            std::cout << "*";
            password[index++] = ch;
        }
    }
    string tem(password);
    return tem;
}

#endif

interface.cpp

#include"interface.h"
#include"global.h"
#include<iomanip>
using namespace std;

control* globalInstance = control::getInstance();

//登录
bool Interface::login() {
    cout << "学号/工号：\n";
    string idStr;
    getline(cin, idStr);
    if (idStr.length() != role) {
        cout << "输入有误！";
        return false;
    }
    int id = stringToNum(idStr);
    if (id == -1) {
        cout << "输入有误！";
        return false;
    }
    //学生
    list<user>* container = &(globalInstance->student);
    //老师
    if (role == 6)
        container = &(globalInstance->teacher);
    //id找完整
    auto iter = find_if(container->begin(), container->end(), findUser(id));
    if (iter == container->end()) {
        cout << "用户不存在";
        return false;
    }
    cout << "\n密码：\n";
    string password = Password();
    if (password != iter->password) {
        cout << "密码错误";
        return false;
    }
    me = &(*iter);
    cout << "\n" << iter->name << "，欢迎回来！\n";
    return true;
}
//公告
void Interface::noticeBoard() {
    if (globalInstance->notice.length() == 0)
        cout << "暂无通知";
    else
        cout << globalInstance->notice;
}
//改密码
void Interface::changePassword() {
    cout << "新密码：\n";
    string password;
    getline(cin, password);
    if (password.length() == 0) {
        cout << "输入有误！";
        return;
    }
    me->password = password;
    cout << "更改成功！";
}

studentInterface::studentInterface() { role = 8; }
//选课 
void studentInterface::selectCourse() {
    cout << "课程编号：\n";
    string num;
    getline(cin, num);
    if (num.length() != 5) {
        cout << "输入有误！";
        return;
    }
    int id = stringToNum(num);
    if (id == -1) {
        cout << "输入有误！";
        return;
    }
    //iter自己的课表
    auto iter = find(me->courseId.begin(), me->courseId.end(), id);
    if (iter != me->courseId.end()) {
        cout << "已选该课";
        return;
    }
    //itor完整的课
    auto itor = find_if(globalInstance->course.begin(), globalInstance->course.end(), findCourse(id));
    if (itor == globalInstance->course.end()) {
        cout << "无此课程";
        return;
    }
    if (itor->studentId.size() == itor->limit) {
        cout << "人数已满";
        return;
    }
    me->courseId.push_back(id);
    itor->studentId.push_back(me->id);
    cout << "选课成功！";
}
//显示课
void studentInterface::displayCourse() {
    if (me->courseId.empty()) {
        cout << "暂无课程";
        return;
    }
    cout << "编号  课程                                     教师                 人数\n";
    //iter课id itor完整课
    for (auto iter = me->courseId.begin(); iter != me->courseId.end(); ++iter) {
        auto itor = find_if(globalInstance->course.begin(), globalInstance->course.end(), findCourse(*iter));
        cout << itor->id << " " << left << setw(40) << itor->name << " " << left << setw(20) << itor->teacherName << " (" << itor->studentId.size() << "/" << itor->limit << ")\n";
    }
}
//退选
void studentInterface::deleteCourse() {
    cout << "课程编号：\n";
    string num;
    getline(cin, num);
    if (num.length() != 5) {
        cout << "输入有误！";
        return;
    }
    int id = stringToNum(num);
    if (id == -1) {
        cout << "输入有误！";
        return;
    }
    //iter课id itor完整课
    auto iter = find(me->courseId.begin(), me->courseId.end(), id);
    if (iter == me->courseId.end()) {
        cout << "未选该课";
        return;
    }
    me->courseId.erase(iter);
    auto itor = find_if(globalInstance->course.begin(), globalInstance->course.end(), findCourse(id));
    itor->studentId.erase(find(itor->studentId.begin(), itor->studentId.end(), me->id));
    cout << "退选成功！";
}


teacherInterface::teacherInterface() { role = 6; }
//显示课
void teacherInterface::displayCourse() {
    if (me->courseId.empty()) {
        cout << "暂无课程";
        return;
    }
    cout << "编号  课程                                     人数\n";
    //iter课id itor完整课
    for (auto iter = me->courseId.begin(); iter != me->courseId.end(); iter++) {
        auto itor = find_if(globalInstance->course.begin(), globalInstance->course.end(), findCourse(*iter));
        cout << itor->id << " " << left << setw(40) << itor->name << " (" << itor->studentId.size() << "/" << itor->limit << ")\n";
    }
}
//唯一的课程添加功能
void teacherInterface::addCourse() {
    cout << "课程名称：\n";
    string name;
    getline(cin, name);
    if (name.length() == 0|| name.length() > 40) {
        cout << "输入有误！";
        return;
    }
    cout << "课容量：\n";
    string num;
    getline(cin, num);
    int n = stringToNum(num);
    if (n == -1 || n == 0) {
        cout << "输入有误！";
        return;
    }
    if (num.length() > 4) {
        cout << "超出人数限制！";
        return;
    }
    globalInstance->course.push_back(courseT(name, n, me->id, me->name));
    cout << "添加成功！编号：" << courseT::count - 1;
    me->courseId.push_back(courseT::count - 1);
    stringstream tem;
    tem << "\n" << me->name << "老师发布了“" << name << "”课程，编号：" << courseT::count - 1;
    globalInstance->notice += tem.str();
    //行数
    int p = -1, count = 0;
    while (1) {
        p = globalInstance->notice.find('\n', p + 1);
        if (p == -1)
            break;
        count++;
    }
    if (count == 6)
        globalInstance->notice = globalInstance->notice.substr(globalInstance->notice.find('\n', 1), globalInstance->notice.length() - globalInstance->notice.find('\n', 1));
}

main.cpp

#include<iostream>
#include<stdlib.h>
#include<conio.h>
#include<Windows.h>
#include<string>
#include<sstream>
#include"control.h"
#include"global.h"
#include"interface.h"

using namespace std;

int main() {
    cout << "\n\n\n中大伪教务 V1.0 .";
    control* Instance = control::getInstance();
    Sleep(500);
    cout << ".";
    Sleep(500);
    cout << ".";
    Sleep(500);
    cout << ".";
    Sleep(500);
    while (1) {
        system("cls");
        //登录菜单
        cout << "\n登录：\n\n 0、退出\n 1、教务\n 2、学生\n 3、教师\n";
        int ch = _getch();
        if (ch == '0')
            break;
        //教务
        else if (ch == '1') {
            system("cls");
            cout << "\n教务\n\n用户名：\n";
            string name;
            getline(cin, name);
            if (name.length() == 0) {
                cout << "输入有误！";
                _getch();
                continue;
            }
            cout << "\n密码：\n";
            string password = Password();
            //匹配
            if (name != "admin" || password != "admin") {
                cout << "\n用户名不存在或密码错误";
                _getch();
            }
            //进入
            else {
                cout << "\n登录成功！ ...";
                Sleep(1000);
                while (1) {
                    system("cls");
                    //教务菜单
                    cout << "\n教务\n\n 0、返回\n 1、发布公告\n 2、课程管理\n 3、学生管理\n 4、教师管理\n";
                    int ch = _getch();
                    if (ch == '0')
                        break;
                    else if (ch == '1') {
                        system("cls");
                        cout << "\n教务> 发布公告\n\n";
                        Instance->modifyNotice();
                        _getch();
                    }
                    //课程管理
                    else if (ch == '2') {
                        while (1) {
                            system("cls");
                            //课程管理菜单
                            cout << "\n教务> 课程管理\n\n 0、返回\n 1、所有课程\n 2、查找\n 3、修改课名\n 4、修改课容量\n 5、删除课程\n";
                            int ch = _getch();
                            if (ch == '0')
                                break;
                            else if (ch == '1') {
                                system("cls");
                                cout << "\n教务> 课程管理> 所有课程\n\n";
                                Instance->diplayCourse();
                                _getch();
                            }
                            else if (ch == '2') {
                                system("cls");
                                cout << "\n教务> 课程管理> 查找\n\n";
                                Instance->modifyCourse(0);
                                _getch();
                            }
                            else if (ch == '3') {
                                system("cls");
                                cout << "\n教务> 课程管理> 修改课名\n\n";
                                Instance->modifyCourse(1);
                                _getch();
                            }
                            else if (ch == '4') {
                                system("cls");
                                cout << "\n教务> 课程管理> 修改课容量\n\n";
                                Instance->modifyCourse(2);
                                _getch();
                            }
                            else if (ch == '5') {
                                system("cls");
                                cout << "\n教务> 课程管理> 删除课程\n\n";
                                Instance->modifyCourse(3);
                                _getch();
                            }
                        }
                    }
                    //学生管理
                    else if (ch == '3') {
                        while (1) {
                            system("cls");
                            //学生管理菜单
                            cout << "\n教务> 学生管理\n\n 0、返回\n 1、添加学生\n 2、删除学生\n 3、查找学生\n 4、修改密码\n";
                            int ch = _getch();
                            if (ch == '0')
                                break;
                            else if (ch == '1') {
                                system("cls");
                                cout << "\n教务> 学生管理> 添加学生\n\n";
                                Instance->addUser(0);
                                _getch();
                            }
                            else if (ch == '2') {
                                system("cls");
                                cout << "\n教务> 学生管理> 删除学生\n\n";
                                Instance->handleUser(8, 0);
                                _getch();
                            }
                            else if (ch == '3') {
                                system("cls");
                                cout << "\n教务> 学生管理> 查找学生\n\n";
                                Instance->studentCourse();
                                _getch();
                            }
                            else if (ch == '4') {
                                system("cls");
                                cout << "\n教务> 学生管理> 修改密码\n\n";
                                Instance->handleUser(8, 1);
                                _getch();
                            }
                        }
                    }
                    //教师管理
                    else if (ch == '4') {
                        while (1) {
                            system("cls");
                            //教师管理菜单
                            cout << "\n教务> 教师管理\n\n 0、返回\n 1、添加教师\n 2、删除教师\n 3、查找教师\n 4、修改密码\n";
                            int ch = _getch();
                            if (ch == '0')
                                break;
                            else if (ch == '1') {
                                system("cls");
                                cout << "\n教务> 教师管理> 添加教师\n\n";
                                Instance->addUser(1);
                                _getch();
                            }
                            else if (ch == '2') {
                                system("cls");
                                cout << "\n教务> 教师管理> 删除教师\n\n";
                                Instance->handleUser(6, 0);
                                _getch();
                            }
                            else if (ch == '3') {
                                system("cls");
                                cout << "\n教务> 教师管理> 查找教师\n\n";
                                Instance->teacherCourse();
                                _getch();
                            }
                            else if (ch == '4') {
                                system("cls");
                                cout << "\n教务> 教师管理> 修改密码\n\n";
                                Instance->handleUser(6, 1);
                                _getch();
                            }
                        }
                    }
                }
            }
        }
        //学生
        else if (ch == '2') {
            system("cls");
            //伪单例
            studentInterface student;
            //登录
            cout << "\n学生\n\n";
            if (!student.login())
                _getch();
            //进入
            else {
                cout << "登录成功！ ...";
                Sleep(1000);
                while (1) {
                    system("cls");
                    //公告
                    cout << "\n学生\n";
                    student.noticeBoard();
                    //学生菜单
                    cout << "\n\n 0、返回\n 1、所有课程\n 2、选课\n 3、退课\n 4、已选课程\n 5、修改密码\n";
                    int ch = _getch();
                    if (ch == '0')
                        break;
                    else if (ch == '1') {
                        system("cls");
                        cout << "\n学生> 所有课程\n\n";
                        Instance->diplayCourse();
                        _getch();
                    }
                    else if (ch == '2') {
                        system("cls");
                        cout << "\n学生> 选课\n\n";
                        student.selectCourse();
                        _getch();
                    }
                    else if (ch == '3') {
                        system("cls");
                        cout << "\n学生> 退课\n\n";
                        student.deleteCourse();
                        _getch();
                    }
                    else if (ch == '4') {
                        system("cls");
                        cout << "\n学生> 已选课程\n\n";
                        student.displayCourse();
                        _getch();
                    }
                    else if (ch == '5') {
                        system("cls");
                        cout << "\n学生> 修改密码\n\n";
                        student.changePassword();
                        _getch();
                    }
                }
            }
        }
        //教师
        else if (ch == '3') {
            system("cls");
            //伪单例
            teacherInterface teacher;
            //登录
            cout << "\n教师\n\n";
            if (!teacher.login())
                _getch();
            //进入
            else {
                cout << "\n登录成功！ ...";
                Sleep(1000);
                while (1) {
                    system("cls");
                    //公告
                    cout << "\n教师\n";
                    teacher.noticeBoard();
                    //教师菜单
                    cout << "\n\n 0、返回\n 1、全校课程\n 2、发布课程\n 3、任教课程\n 4、修改密码\n";
                    int ch = _getch();
                    if (ch == '0')
                        break;
                    else if (ch == '1') {
                        system("cls");
                        cout << "\n教师> 全校课程\n\n";
                        Instance->diplayCourse();
                        _getch();
                    }
                    else if (ch == '2') {
                        system("cls");
                        cout << "\n教师> 发布课程\n\n";
                        teacher.addCourse();
                        _getch();
                    }
                    else if (ch == '3') {
                        system("cls");
                        cout << "\n教师> 任教课程\n\n";
                        teacher.displayCourse();
                        _getch();
                    }
                    else if (ch == '4') {
                        system("cls");
                        cout << "\n教师> 修改密码\n\n";
                        teacher.changePassword();
                        _getch();
                    }
                }
            }
        }   
    }
    system("cls");
    cout << "\n\n\n正在保存 .";
    Instance->save();
    delete Instance;
    Sleep(500);
    cout << ".";
    Sleep(500);
    cout << ".";
    Sleep(500);
    cout << ".";
    Sleep(500);
    system("cls");
    cout << "\n\n\n保存成功！";
    Sleep(500);
    return 0;
}

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