C++实现图书管理系统简易版_C/C++

本文实例为大家分享了C++实现图书管理系统的具体代码，供大家参考，具体内容如下
包括管理员端和学生端，可以对图书进行借阅，归还，还可以修改账号登陆密码等
				?

									#include<iostream>

									#include<string>

									#include<string.h>

									#include<cstdio>

									#include<conio.h>

									#include<fstream>

									#include<cstring>

									#include<iomanip>

									#include<algorithm>

									#include<regex>

									#include<windows.h>

									#include<sstream>//stringstream要使用到的头文件

									#define STUDENT_FILE "student_text.txt"

									#define BOOK_FILE "book_text.txt"

									#define CLASS_FILE "class.txt"

									#define MAX 1000

									#define MIN 100

									using namespace std;

									class Student;

									class Book;

									class Clazz;

									void initialize();//初始化

									void Manager_Menu();

									void Student_Menu();

									void existSystem();  //退出图书管理系统

									void show_book_base();

									string input_password();//不可见输入密码

									int student_id_exist(int id);//查找用户是否存在

									int manager_id_exist(int id);

									int book_id_exist(int id);//查找书籍是否存在

									int class_id_exist(int id);

									int random_id(); //产生随机图书编号

									void book_find();

									void load_information();

									void update_information();

									void regist_windows();

									void regist_manager();

									void regist_student();

									bool student_cmp(Student a, Student b);

									bool class_cmp(Clazz a, Clazz b);

									bool book_cmp(Book a, Book b);

									class Book

									{

									    int book_id;                    //书籍编号

									    string book_name;               //书籍名称

									    int book_total_num;             //该类书籍总数

									    string book_author;             //书籍作者

									    string book_type;               //书籍分类

									    string book_present;            //书籍简介

									    int book_student_len;           //每种书共有几人选

									    int student_id[MIN];       //借阅该书籍的学生学号

									    string student_name[MIN];  //借阅该书籍的学生姓名

									public:

									    Book()

									    {

									        book_id = -1;

									        book_total_num = 0;

									        book_student_len = 0;

									        book_type = "";

									        book_present = "";

									        memset(student_id, 0, MIN);

									        for (int i = 0; i < MIN; i++)

									        {

									            student_name[i] = "";

									        }

									    }

									    void set_book_name(string book_name)

									    {

									        this->book_name = book_name;

									    }

									    void set_book_author(string book_author)

									    {

									        this->book_author = book_author;

									    }

									    void set_book_type(string book_type)

									    {

									        this->book_type = book_type;

									    }

									    void set_book_total_num(int book_total_num)

									    {

									        this->book_total_num = book_total_num;

									    }

									    void set_book_id(int book_id)

									    {

									        this->book_id = book_id;

									    }

									    int get_book_id()

									    {

									        return book_id;

									    }

									    void set_book_information(int book_id, string book_name, int book_total_num, string book_author, string book_type)

									    {

									        set_book_id(book_id);

									        set_book_name(book_name);

									        set_book_author(book_author);

									        set_book_type(book_type);

									        set_book_total_num(book_total_num);

									        //set_book_present(book_present);

									    }

									    void set_book_present(string book_present)

									    {

									        this->book_present = book_present;

									    }

									    string& get_book_present()

									    {

									        return book_present;

									    }

									    void show_book_information();

									    friend int book_id_exist(int id);

									    friend void show_book_base();

									    friend class Student;

									    friend class Manager;

									    friend void initialize();

									    friend void load_information();

									    friend void update_information();

									};

									Book book[MAX];

									int book_len = 0;

									class User

									{

									protected:

									    int id;

									    string name;

									    string password;

									    int mark;

									public:

									    User()

									    {

									        id = -1;

									        mark = 0;

									        name = "";

									        password = "";

									    }

									    void password_update();

									    virtual void book_insert()=0;

									    virtual void book_delete()=0;

									    friend void initialize();

									    void set_id(int id)

									    {

									        this->id = id;

									    }

									    void set_name(string name)

									    {

									        this->name = name;

									    }

									    void set_mark(int mark)

									    {

									        this->mark = mark;

									    }

									    void set_password(string password)

									    {

									        this->password = password;

									    }

									    int get_id()

									    {

									        return  id;

									    }

									    int get_mark()

									    {

									        return this->mark;

									    }

									    string get_name()

									    {

									        return name;

									    }

									    string get_password()

									    {

									        return password;

									    }

									};

									class Student:public User

									{

									    int student_grade;    //入学年份--年级

									    int class_id;

									    string student_gender;

									    int student_book_len;//借阅书籍总数

									public:

									    Student()

									    {

									        id = -1;  //id为-1时表示该账户无效

									        class_id = -1;

									        name = "";

									        student_gender = "";

									        student_grade = -1;

									        student_book_len = 0;

									    }

									    Student operator = (const Student& p);

									    void set_class_id(int id)

									    {

									        class_id = id;

									    }

									    void set_student_grade(int student_grade)

									    {

									        this->student_grade = student_grade;

									    }

									    void set_student_gender(string student_gender)

									    {

									        this->student_gender = student_gender;

									    }

									    int get_class_id()

									    {

									        return class_id;

									    }

									    int get_student_grade()

									    {

									        return student_grade;

									    }

									    string get_student_gender()

									    {

									        return  student_gender;

									    }

									    //学生

									    void book_insert();

									    void student_information_view();

									    void book_delete();

									    void student_information_update();

									    //学生修改账号密码

									    void show_self();

									    void student_windows();

									    friend void eroll_windows();

									    friend class Manager;

									    friend void load_information();

									    friend void update_information();

									    friend bool student_cmp(Student a,Student b);

									};

									Student student[MAX];

									int student_len = 0;

									class Manager :public User

									{

									public:

									    Manager()

									    {

									        id = -1;

									        mark = 0;

									        name = "";

									        password = "";

									    }

									    Manager(int id,int mark,string name,string password)

									    {

									        this->id =id;

									        this->mark = mark;

									        this->name = name;

									        this->password = password;

									    }

									    Manager operator = (const Manager& p);

									    //管理员对学生账号的管理

									    void student_insert();

									    void student_delete();

									    void student_view();

									    //管理员对书籍的管理

									    void book_insert();

									    void book_delete();

									    void book_view();

									    void book_update();

									    //班级

									    void class_insert();

									    void class_update();

									    void class_view();

									    void class_delete();

									    void manager_windows();

									    void manager_insert();

									    friend void load_information();

									    friend void update_information();

									};

									Manager manager[MIN];

									int manager_len = 0;

									class Clazz

									{

									    int class_id;

									    string class_name;

									    string teacher_name;

									    int student_len;

									public:

									    Clazz()

									    {

									        class_id = -1;

									        class_name = "";

									        teacher_name = "";

									        student_len = 0;

									    }

									    int get_class_id()

									    {

									        return class_id;

									    }

									    string get_class_name()

									    {

									        return class_name;

									    }

									    string get_teacher_name()

									    {

									        return teacher_name;

									    }

									    void set_class_id(int id)

									    {

									        this->class_id =id;

									    }

									    void set_class_name(string name)

									    {

									        this->class_name = name;

									    }

									    void set_teacher_name(string name)

									    {

									        this->teacher_name = name;

									    }

									    friend int class_id_exist(int id);

									    friend void load_information();

									    friend void update_information();

									};

									Clazz clazz[MIN];

									int class_len = 0;

									int main()

									{

									    initialize();

									    //登录

									    regist_windows();

									    system("pause");

									    return 0;

									}

									void initialize()

									{

									    system("title 图书信息管理系统");

									    system("color f0");

									    system("mode con cols=90 lines=38");

									    srand((int)time(0));

									    load_information();

									    Manager p1;

									    p1.set_id(111111);

									    p1.set_name("张晖");

									    p1.set_password("111111");

									    manager[0]=p1; manager_len++;

									    Manager p2(222222,1, "李四", "222222");

									    manager[1]=p2; manager_len++;

									}

									void Manager_Menu()

									{

									    cout << " ________________________________________________________________________________________" << endl;

									    cout << " |                             图书管理管理系统                                         |" << endl;

									    cout << " |______________________________________________________________________________________|" << endl;

									    cout << " |              1.增加学生信息              |              13.修改登录密码              |" << endl;

									    cout << " |              2.查看学生信息              |              14.退出当前账号              |" << endl;

									    cout << " |              3.删除学生信息              |              0.退出管理系统               |" << endl;

									    cout << " |__________________________________________|___________________________________________|" << endl;

									    cout << " |              4.增加书籍信息              |              8.增加班级信息               |" << endl;

									    cout << " |              5.查看书籍信息              |              9.查看班级信息               |" << endl;

									    cout << " |              6.修改书籍信息              |              10.修改班级信息              |" << endl;

									    cout << " |              7.删除书籍信息              |              11.删除班级信息              |" << endl;

									    cout << " |                                          |              12.增加管理员                |" << endl;

									    cout << " |__________________________________________|___________________________________________|" << endl;

									    cout << endl;

									}

									void Student_Menu()

									{

									    cout << "           ______________________________________________" << endl;

									    cout << "           |                学生图书系统                |" << endl;

									    cout << "           |____________________________________________|" << endl;

									    cout << "           |               1.选择借阅书籍               |" << endl;

									    cout << "           |               2.查找书籍信息               |" << endl;

									    cout << "           |               3.归还借阅书籍               |" << endl;

									    cout << "           |               4.查询个人信息               |" << endl;

									    cout << "           |____________________________________________|" << endl;

									    cout << "           |               5.修改个人信息               |" << endl;

									    cout << "           |               6.修改登录密码               |" << endl;

									    cout << "           |               7.退出当前账号               |" << endl;

									    cout << "           |               0.退出管理系统               |" << endl;

									    cout << "           |____________________________________________|" << endl;

									    cout << endl;

									}

									void Manager::manager_windows()

									{

									    while (true)

									    {

									        int choice = 0;

									        Manager_Menu();

									        cout << "\t\t请输入您的选择：" << endl;

									        cout << "          ";

									        cin >> choice;

									        switch (choice)

									        {

									        case 0://退出

									        {

									            existSystem();

									            break;

									        }

									        case 1://添加

									        {

									            student_insert();

									            break;

									        }

									        case 2://显示

									        {

									            student_view();

									            break;

									        }

									        case 3://删除

									        {

									            student_delete();

									            break;

									        }

									        case 4:

									        {

									            book_insert();

									            break;

									        }

									        case 5:

									        {

									            book_view();//book_find();

									            break;

									        }

									        case 6://查找

									        {

									            book_update();

									            break;

									        }

									        case 7:

									        {

									            book_delete();

									            break;

									        }

									        case 8:

									        {

									            class_insert();

									            break;

									        }

									        case 9:

									        {

									            class_view();

									            break;

									        }

									        case 10://查找

									        {

									            class_update();

									            break;

									        }

									        case 11:

									        {

									            class_delete();

									            break;

									        }

									        case 12:

									        {

									            manager_insert();

									            break;

									        }

									        case 13:

									        {

									            password_update();

									            break;

									        }

									        case 14://回到登录界面

									        {

									            system("cls");

									            update_information();

									            regist_windows();

									            break;

									        }

									        default:

									        {

									            cout << "没有该选项!" << endl;

									            system("cls");

									            break;

									        }

									        }

									    }

									}

									void Student::student_windows()

									{

									    while (true)

									    {

									        int choice = 0;

									        Student_Menu();

									        cout << "\t\t请输入您的选择：" << endl;

									        cout << "         ";

									        cin >> choice;

									        switch (choice)

									        {

									        case 0://退出

									        {

									            existSystem();

									            break;

									        }

									        case 1://添加

									        {

									            book_insert();

									            break;

									        }

									        case 2:

									        {

									            book_find();

									            break;

									        }

									        case 3:

									        {

									            book_delete();

									            break;

									        }

									        case 4:

									        {

									            student_information_view();

									            break;

									        }

									        case 5:

									        {

									            student_information_update();

									            break;

									        }

									        case 6:

									        {

									            password_update();

									            break;

									        }

									        case 7://回到登录界面

									        {

									            system("cls");

									            update_information();

									            regist_windows();

									            break;

									        }

									        default:

									        {

									            cout << "没有该选项" << endl;

									            system("cls");

									            break;

									        }

									        }

									    }

									}

									void regist_windows()

									{

									    int select = 0;

									    cout << "\t\t1.管理员登录" << endl;

									    cout << "\t\t2.学生登录" << endl;

									    cin >> select;

									    system("cls");

									    if (select == 1)

									    {

									        regist_manager();

									    }

									    else if (select == 2)

									    {

									        regist_student();

									    }

									    else

									    {

									        cout << "该选项不存在！请选择1或2！" << endl;

									    }

									}

									void regist_manager()

									{

									    cout << "\t用户名：";

									    int temp_user_id = -1; cin >> temp_user_id; cout << endl;

									    cout << "\t密码：";

									    string temp_password;  temp_password = input_password();

									    int flag = 0;

									    int position = manager_id_exist(temp_user_id);

									    if (position == -1)

									    {

									        cout << "该用户不存在！" << endl;

									        regist_manager();

									    }

									    else if (manager[position].get_password() == temp_password)

									    {

									        system("cls");

									        while (true)

									        {

									            manager[position].manager_windows();

									        }

									    }

									    else

									    {

									        cout << "\t\t用户名或密码错误" << endl << endl;

									        regist_manager();

									    }

									    system("pause");

									    system("cls");

									}

									void regist_student()

									{

									    int temp_user_id = 0;

									    string temp_password;

									    cout << "\t用户名：";

									    cin >> temp_user_id;

									    cout << endl;

									    cout << "\t密码：";

									    temp_password = input_password();

									    int flag = 0;

									    int position = student_id_exist(temp_user_id);

									    if (position == -1)

									    {

									        cout << "\t该用户不存在！" << endl;

									        regist_student();

									    }

									    else if (student[position].get_password() == temp_password)

									    {

									        system("cls");

									        while (true)

									        {

									            student[position].student_windows();

									        }

									    }

									    else

									    {

									        cout << "\t\t用户名或密码错误" << endl << endl;

									        regist_student();

									    }

									    system("pause");

									    system("cls");

									}

									void Book::show_book_information()

									{

									    cout << "-------------------------------------------------------------------------------------\n";

									    cout << " 书名\t\t\t类型\t\t\t\t作者\n";

									    cout << book_name << "\t\t\t" << book_type << "\t\t\t" << book_author << endl;

									    cout << "-------------------------------------------------------------------------------------\n";

									    cout << " 总数\t\t\t剩余量\n";

									    cout << book_total_num << "\t\t\t" << (book_total_num - book_student_len) << endl;

									    cout << "-------------------------------------------------------------------------------------\n";

									    cout << "\t\t\t小说简介\n";

									    cout << book_present << endl;

									    cout << "-------------------------------------------------------------------------------------\n";

									}

									void User::password_update()

									{

									    int flag = 0;

									    while (true)

									    {

									        cout << "请输入旧密码：";

									        string last_password, new_password1, new_password2;

									        last_password = input_password();

									        if (last_password == password)

									        {

									            cout << "请输入新密码(大于等于6位)："; new_password1 = input_password();

									            cout << "请再次输入新密码：";         new_password2 = input_password();

									            if (new_password1 == new_password2)

									            {

									                if ((new_password1.size() >= 6) && (new_password1.size() <= 13))

									                {

									                    this->password = new_password1;

									                    cout << "密码修改成功！" << endl;

									                    break;

									                }

									                else

									                {

									                    cout << "密码应大于等于6位！修改失败！" << endl;

									                }

									            }

									            else

									            {

									                cout << "两次密码不一致！请重新输入！" << endl;

									            }

									        }

									        else

									        {

									            flag++;

									            if (flag <= 3)

									            {

									                cout << "旧密码错误！" << endl;

									            }

									            else

									            {

									                cout << "密码多次输入错误！返回菜单界面！";

									                break;

									            }

									        }

									    }

									    system("pause");

									    system("cls");

									}

									Manager  Manager::operator = (const Manager& p)

									{

									    this->id = p.id;

									    this->mark = p.mark;

									    this->name = p.name;

									    this->password = p.password;

									    return *this;

									}

									void Manager::student_insert()

									{

									    if (student_len > MAX)

									    {

									        cout << "信息系统已满，无法添加!" << endl;

									        return;

									    }

									    else

									    {

									        Student temp_student;

									        cout << "请输入学号：" << endl;

									        int temp_id; cin >> temp_id;

									        cout << "请输入姓名：" << endl;

									        string temp_name; cin >> temp_name;

									        cout << "请输入权限：" << endl;

									        cout << "1.普通用户权限" << endl;

									        cout << "2.高级用户权限" << endl;

									        int temp_mark; cin >> temp_mark;

									        temp_student.set_mark(temp_mark);

									        string temp_student_gender;

									        while (true)

									        {

									            cout << "请选择性别：" << endl;

									            cout << "1.女\n2.男\n";

									            int choice = 0; cin >> choice;

									            if (choice == 1)

									            {

									                temp_student_gender = "女"; break;

									            }

									            else if (choice == 2)

									            {

									                temp_student_gender = "男"; break;

									            }

									            else

									            {

									                cout << "没有该选项！请重新选择！\n";

									            }

									        }

									        int temp_student_grade;

									        while (true)

									        {

									            cout << "请输入年级（入学年份）：" << endl;

									            cout << "1.2018\n2.2019\n3.2020\n4.2021\n";

									            int choice = 0; cin >> choice;

									            if (choice == 1)

									            {

									                temp_student_grade = 2018; break;

									            }

									            else if (choice == 2)

									            {

									                temp_student_grade = 2019; break;

									            }

									            else if (choice == 3)

									            {

									                temp_student_grade = 2020; break;

									            }

									            else if (choice == 2)

									            {

									                temp_student_grade = 2021; break;

									            }

									            else

									            {

									                cout << "没有该选项！请重新选择！\n";

									            }

									        }

									        cout << "\t\t班级信息如下\n";

									        for (int i = 0; i < class_len; i++)

									            cout << clazz[i].get_class_id() << "\t\t" << clazz[i].get_class_name() << endl;

									        while (1)

									        {

									            cout << "请输入班级编号\n";

									            int temp_id = 0; cin >> temp_id;

									            if (class_id_exist(temp_id) != -1)

									            {

									                temp_student.set_class_id(temp_id);

									                break;

									            }

									            else

									            {

									                cout << "该班级编号不存在！\n";

									            }

									        }

									        string temp_password;

									        stringstream transform;

									        transform << temp_id; transform >> temp_password;

									        temp_student.set_password(temp_password);

									        temp_student.set_id(temp_id);

									        temp_student.set_student_grade(temp_student_grade);

									        temp_student.set_name(temp_name);

									        temp_student.set_student_gender(temp_student_gender);

									        student[student_len] = temp_student;

									       /* while (1)

									        {

									            cout << "请设置您的密码：" << endl;

									            temp_password1 = input_password();

									            temp_password2 = input_password();

									            if (temp_password1 == temp_password2)

									            {

									                student[student_len].password = temp_password1;

									                student_len++;

									                break;

									            }

									            else

									            {

									                cout << "两次密码不一致！请重新设置密码！" << endl;

									            }

									        }*/

									        student_len++;

									        cout << "学生信息添加成功！" << endl;

									        sort(student, student + student_len, student_cmp);

									    }

									    system("pause");

									    system("cls");

									}

									void Manager::student_view()

									{

									    cout << "\t\t1.查询单个账号信息" << endl;

									    cout << "\t\t2.查看所有账号信息" << endl;

									    int choice; cin >> choice;

									    if (choice == 1)

									    {

									        cout << "\t\t请输入查询账号：" << endl;

									        int id; cin >> id;

									        int pos = student_id_exist(id);

									        if (pos == -1)

									        {

									            cout << "\t\t该账号不存在！" << endl;

									        }

									        else

									        {

									            student[pos].show_self();

									        }

									    }

									    else

									    {

									        if (student_len == 0)

									        {

									            cout << "当前记录为空" << endl;

									        }

									        else

									        {

									            cout << "序号：\t姓名：\t学号： \t年级： \t性别\n";

									            for (int i = 0; i < student_len; i++)

									            {

									                cout << i + 1 << "\t\t";

									                cout << student[i].name << "\t\t" << student[i].id << "\t\t";

									                if (student[i].student_book_len == 0)

									                {

									                    cout << "未借阅书籍";

									                }

									                else

									                {

									                    for (int j = 0; j < book_len; j++)

									                    {

									                        for (int k = 0; k < book[j].book_total_num; k++)

									                        {

									                            if (book[j].student_name[k] == student[i].name)

									                                cout << book[j].book_id << "\t\t" << book[j].book_name << endl;;

									                        }

									                    }

									                }

									                cout << endl;

									            }

									        }

									    }

									    system("pause");

									    system("cls");

									}

									void Manager::student_delete()

									{

									    cout << "请输入您要删除的学生账号：" << endl;

									    int temp_id;

									    cin >> temp_id;

									    int position = student_id_exist(temp_id);

									    if (position != -1)

									    {

									        for (int i = position; i < student_len - 1; i++)

									        {

									            student[i] = student[i + 1];

									        }

									        student_len--;

									        cout << "删除成功" << endl;

									    }

									    else

									    {

									        cout << "该学生账号不存在！" << endl;

									    }

									    system("pause");

									    system("cls");

									}

									void Manager::book_insert()

									{

									    int temp_book_id;

									    string temp_book_name;

									    show_book_base();

									    //cout << "请输入想增加的书籍编号：" << endl;

									    cout << "书籍编号由系统自动生成!" << endl;

									    temp_book_id = random_id();

									    cout << "请输入想增加的书籍名称：" << endl;

									    cin >> temp_book_name;

									    cout << "请输入书籍数量：" << endl;

									    int temp_book_len; cin >> temp_book_len;

									    cout << "请输入书籍作者：" << endl;

									    string temp_book_author; cin >> temp_book_author;

									    cout << "请输入书籍分类：" << endl;

									    string temp_book_type; cin >> temp_book_type;

									    cout << "请输入书籍简介：" << endl;

									    string temp_book_present; cin >> temp_book_present;

									    book[book_len].set_book_information(temp_book_id, temp_book_name, temp_book_len, temp_book_author, temp_book_type);

									    book[book_len].set_book_present(temp_book_present);

									    book_len++;

									    cout << "书籍信息添加成功！" << endl;

									    sort(book, book + book_len, book_cmp);

									    system("pause");

									    system("cls");

									}

									void Manager::book_delete()

									{

									    int temp_book_id;

									    show_book_base();

									    cout << "请输入想删除的书籍id号：" << endl;

									    cin >> temp_book_id;

									    if (book_id_exist(temp_book_id) == -1)

									    {

									        cout << "该书籍不存在!" << endl;

									    }

									    else

									    {

									        for (int i = 0; i < book_len - 1; i++)

									        {

									            book[i] = book[i + 1];

									        }

									        book_len--;

									        cout << "书籍信息删除成功！" << endl;

									    }

									    system("pause");

									    system("cls");

									}

									void Manager::book_update()

									{

									    show_book_base();

									    cout << "请输入想修改的书籍编号：" << endl;

									    int temp_book_id;  cin >> temp_book_id;

									    cout << "请选择你要修改的书籍信息" << endl;

									    cout << "1--修改书籍名称" << endl;

									    cout << "2--修改书籍总数" << endl;

									    cout << "3--修改书籍作者" << endl;

									    cout << "4--修改书籍分类" << endl;

									    cout << "5--修改书籍简介" << endl;

									    cout << "0--返回菜单" << endl;

									    int choice = 0; cin >> choice;

									    switch (choice)

									    {

									    case 0: break;

									    case 1:

									    {

									        cout << "请输入书籍名称：" << endl;

									        string temp_book_name; cin >> temp_book_name;

									        book[book_len].set_book_name(temp_book_name);

									        cout << "修改成功\n";

									        break;

									    }

									    case 2:

									    {

									        cout << "请输入书籍总数：" << endl;

									        int temp_book_len; cin >> temp_book_len;

									        book[book_len].set_book_total_num(temp_book_len);

									        break;

									    }

									    case 3:

									    {

									        cout << "请输入书籍作者：" << endl;

									        string temp_book_author; cin >> temp_book_author;

									        book[book_len].set_book_author(temp_book_author);

									        break;

									    }

									    case 4:

									    {

									        cout << "请输入书籍分类：" << endl;

									        int temp_book_type; cin >> temp_book_type;

									        book[book_len].book_type = temp_book_type;

									        break;

									    }case 5:

									    {

									        cout << "请输入书籍简介：" << endl;

									        string temp_book_present; cin >> temp_book_present;

									        book[book_len].book_present = temp_book_present;

									        break;

									    }

									    default:

									    {

									        cout << "没有该选项！" << endl; break;

									    }

									    }

									    system("pause");

									    system("cls");

									}

									void Manager::book_view()

									{

									    if (book_len == 0)

									    {

									        cout << "无借阅信息！" << endl;

									    }

									    for (int i = 0; i < book_len; i++)

									    {

									        cout << "书籍id号：" << book[i].book_id << "\t书籍名：" << book[i].book_name

									            << "\t作者:" << book[i].book_author

									            << "\t书籍剩余数:" << (book[i].book_total_num - book[i].book_student_len)

									            << "\t书籍总数:" << book[i].book_total_num << endl;

									        if (book[i].book_student_len == 0)

									        {

									            cout << "\t\t空！" << endl;

									        }

									        else

									        {

									            cout << "学号\t\t" << "姓名" << endl;

									            for (int j = 0; j < book[i].book_student_len; j++)

									            {

									                cout << book[j].book_id << "\t" << book[j].book_name << endl;

									            }

									        }

									        cout << endl;

									    }

									    cout << "\t如果您需要查询书籍详细信息，请输入1；不需要则输入0\n";

									    int ch = 0; cin >> ch;

									    if (ch==1)

									        book_find();

									    system("pause");

									    system("cls");

									}

									void Manager::class_insert()

									{

									    int temp_id;

									    string temp_name;

									    cout << "请输入想增加的班级编号：" << endl;

									    cin >> temp_id;

									    clazz[class_len].set_class_id(temp_id);

									    cout << "请输入想增加的班级名称：" << endl;

									    cin >> temp_name;

									    clazz[class_len].set_class_name(temp_name);

									    cout << "请输入想增加的班主任姓名：" << endl;

									    string temp_teacher_name; cin >> temp_teacher_name;

									    clazz[class_len].set_teacher_name(temp_teacher_name);

									    class_len++;

									    cout << "班级信息添加成功！" << endl;

									    sort(clazz, clazz + class_len, class_cmp);

									    system("pause");

									    system("cls");

									}

									void Manager::class_delete()

									{

									    int temp_book_id;

									    cout << "班级编号\t\t\t班级名称\n";

									    for (int i = 0; i < book_len; i++)

									        cout << clazz[i].get_class_id()<< "\t\t" << clazz[i].get_class_name () << endl;

									    cout << "请输入想删除的班级编号：" << endl;

									    cin >> temp_book_id;

									    if (class_id_exist(temp_book_id) == -1)

									    {

									        cout << "该班级不存在!" << endl;

									    }

									    else

									    {

									        for (int i = 0; i < class_len - 1; i++)

									        {

									            clazz[i] = clazz[i + 1];

									        }

									        class_len--;

									        cout << "班级信息删除成功！" << endl;

									    }

									    system("pause");

									    system("cls");

									}

									void Manager::class_update()

									{

									    class_view();

									    cout << "请输入想修改的班级编号：" << endl;

									    int temp_book_id;  cin >> temp_book_id;

									    cout << "请选择你要修改的班级信息" << endl;

									    cout << "1--修改班级名称" << endl;

									    cout << "2--修改班主任姓名" << endl;

									    cout << "0--返回菜单" << endl;

									    int choice = 0; cin >> choice;

									    switch (choice)

									    {

									    case 0: break;

									    case 1:

									    {

									        cout << "请输入班级名称：" << endl;

									        string temp_name; cin >> temp_name;

									        clazz[class_len].set_class_name(temp_name);

									        cout << "修改成功\n";

									        break;

									    }

									    case 2:

									    {

									        cout << "请输入班主任名称：" << endl;

									        string temp_teacher_name; cin >> temp_teacher_name;

									        clazz[class_len].set_teacher_name(temp_teacher_name);

									        cout << "修改成功\n";

									        break;

									    }

									    default:

									    {

									        cout << "没有该选项！" << endl; break;

									    }

									    }

									    system("pause");

									    system("cls");

									}

									void Manager::class_view()

									{

									    if (class_len == 0)

									    {

									        cout << "无班级信息！" << endl;

									    }

									    else

									    {

									        cout << "\t\t班级信息如下" << endl;

									        cout << "班级编号\t\t班级名称\t\t班主任姓名" << endl;

									        for (int i = 0; i < class_len; i++)

									            cout << clazz[i].get_class_id() << setw(32) << clazz[i].get_class_name() << setw(26) << clazz[i].get_teacher_name() << endl;

									    }

									    system("pause");

									    system("cls");

									}

									void Manager::manager_insert()

									{

									    if (this->mark == 0)

									    {

									        cout << "\t\t权限不足！" << endl;

									    }

									    else

									    {

									        cout << "请输入账号：" << endl;

									        int temp_id; cin >> temp_id;

									        cout << "请输入姓名：" << endl;

									        string temp_name; cin >> temp_name;

									        cout << "请输入权限：" << endl;

									        cout << "1.普通管理员权限" << endl;

									        cout << "2.高级管理员权限" << endl;

									        int temp_mark; cin >> temp_mark;

									        cout << "密码默认为账号！" << endl;

									        string temp_password;

									        stringstream transform;

									        transform << temp_id; transform >> temp_password;

									        Manager temp(temp_id, temp_mark, temp_name, temp_password);

									        manager[manager_len] = temp;

									        manager_len++;

									    }

									    system("pause");

									    system("cls");

									}

									Student Student::operator = (const Student& p)

									{

									    this->id = p.id;

									    this->name = p.name;

									    this->student_gender = p.student_gender;

									    this->student_grade = p.student_grade;

									    this->class_id = p.class_id;

									    this->student_book_len = p.student_book_len;

									    this->password = p.password;

									    return *this;

									}

									void Student::book_insert()

									{

									    cout << "可选书籍如下：" << endl;

									    show_book_base();

									    int temp_book_id;

									    cout << "请输入你要借阅的书籍编号：" << endl;

									    cin >> temp_book_id;

									    int position = book_id_exist(temp_book_id);

									    int count = book[position].book_student_len;

									    if (position == -1)

									    {

									        cout << "该书籍不存在！" << endl;

									    }

									    else

									    {

									        book[position].student_id[count] = this->id;

									        book[position].student_name[count] = this->name;

									        book[position].book_student_len++;

									        student_book_len++;

									        cout << "借阅成功！" << endl;

									    }

									    system("pause");

									    system("cls");

									}

									void Student::student_information_view()

									{

									    cout << "\t\t请输入查询账号：" << endl;

									    int id; cin >> id;

									    int pos =student_id_exist(id);

									    if (pos != student_id_exist(id))

									    {

									        cout << "\t\t您无查看他人账号权限！" << endl;

									    }

									    else

									    {

									        show_self();

									    }

									    system("pause");

									    system("cls");

									}

									void Student::student_information_update()

									{

									    cout << "请选择你要更改的信息：\n";

									    cout << "1.修改性别\n";

									    cout << "2.修改年级\n";

									    cout << "3.修改班级\n";

									    int choice; cin >> choice;

									    if (choice == 1)

									    {

									        cout << "1.男\n2.女\n";

									        int select; cin >> select;

									        if (select == 1)

									        {

									            this->student_gender = "男";

									            cout << "修改成功！\n";

									        }

									        else if (select == 1)

									        {

									            this->student_gender = "女";

									            cout << "修改成功！\n";

									        }

									        else

									            cout << "没有该选项！\n";

									    }

									    else if (choice == 2)

									    {

									        cout << "1.2018\n2.2019\n3.2020\n4.2021\n";

									        int select; cin >> select;

									        if (select == 1)

									        {

									            this->student_grade = 2018;

									            cout << "修改成功！\n";

									        }

									        else if (select == 2)

									        {

									            this->student_grade = 2019;

									            cout << "修改成功！\n";

									        }

									        else if (select == 3)

									        {

									            this->student_grade = 2020; cout << "修改成功！\n";

									        }

									        else if (select == 4)

									        {

									            this->student_grade = 2021; cout << "修改成功！\n";

									        }

									        else

									            cout << "没有该选项！\n";

									    }

									    else if(choice == 3)

									    {

									        cout << "\t\t班级信息如下" << endl;

									        cout << "班级编号\t\t班级名称\t\t班主任姓名" << endl;

									        for (int i = 0; i < class_len; i++)

									            cout << clazz[i].get_class_id() << "\t\t" << clazz[i].get_class_name() << "\t\t" << clazz[i].get_teacher_name() << endl;

									        while (1)

									        {

									            cout << "\t\t请输入你选择的班级编号\n" << endl;

									            int select; cin >> select;

									            if (class_id_exist(select) != -1)

									            {

									                int temp_id; cin >> temp_id;

									                this->class_id = temp_id;

									                break;

									            }

									            else

									            {

									                cout << "\t\t该班级编号不存在！\n";

									            }

									        }

									    }

									    else

									    {

									        cout << "该选项不存在！\n";

									    }

									    system("pause");

									    system("cls");

									}

									void Student::book_delete()

									{

									    cout << "您的已选书籍如下：" << endl;

									    if (student_book_len == 0)

									    {

									        cout << "空！" << endl;

									    }

									    else

									    {

									        cout << "序号\t\t书籍名称\t\t书籍编号" << endl;;

									        for (int i = 0; i < book_len; i++)

									        {

									            for (int j = 0; j < book[i].book_student_len; j++)

									            {

									                if (book[i].student_id[j] == this->id)

									                {

									                    cout << i + 1 << "\t\t" << book[i].book_name << "\t\t\t" << book[i].book_id << endl;

									                }

									            }

									        }

									    }

									    cout << endl << "请输入您想退还的书籍编号：" << endl;

									    int temp_book_id;  cin >> temp_book_id;

									    int book_position = book_id_exist(temp_book_id);

									    if (book_position == -1)

									    {

									        cout << "该书籍不存在！" << endl;

									    }

									    else

									    {

									        int student_position = -1;

									        for (int i = 0; i < book[book_position].book_student_len; i++)

									        {

									            if (book[book_position].student_id[i] == id)

									            {

									                student_position = i;

									                break;

									            }

									        }

									        if (student_position != -1)

									        {

									            for (int i = student_position; i < book[book_position].book_student_len - 1; i++)

									            {

									                book[book_position].student_id[i] = book[book_position].student_id[i + 1];

									                book[book_position].student_name[i] = book[book_position].student_name[i + 1];

									            }

									            book[book_position].book_student_len--;

									            student_book_len--;

									            cout << "书籍归还成功！" << endl;

									        }

									        else

									        {

									            cout << "你并未借阅过该书籍！" << endl;

									        }

									    }

									    system("pause");

									    system("cls");

									}

									void Student::show_self()

									{

									    cout << "\t\t账号信息如下：" << endl;

									    cout << "______________________________________________________________________________\n";

									    cout << " 姓名：" << this->name << "\t\t 学号：" << this->id << "\n";

									    cout << "______________________________________________________________________________\n";

									    cout << " 性别：" << this->student_gender << "\t\t 班级编号：" << this->class_id << "\n";

									    cout << "______________________________________________________________________________\n";

									    cout << " 书籍编号" << "\t\t书籍名称" << "\n";

									    cout << "______________________________________________________________________________\n";

									    if (this->student_book_len == 0)

									    {

									        cout << "\t\t暂未借阅书籍" << "\n";

									    }

									    else

									    {

									        for (int i = 0; i < book_len; i++)

									        {

									            for (int j = 0; j < book[i].book_student_len; j++)

									            {

									                if (book[i].student_id[j] == this->id)

									                {

									                    cout << "\t\t" << book[i].book_id

									                        << "\t\t" << book[i].book_name << "\n";

									                }

									            }

									        }

									    }

									    cout << "______________________________________________________________________________\n";

									}

									void book_find()

									{

									    cout << "请输入你要查找的书籍编号:" << endl;

									    int temp_book_id; cin >> temp_book_id;

									    int position = book_id_exist(temp_book_id);

									    if (position == -1)

									    {

									        cout << "该书籍编号不存在！查找失败！" << endl;

									    }

									    else

									    {

									        book[position].show_book_information();

									    }

									    system("pause");

									    system("cls");

									}

									void show_book_base()

									{

									    cout << "书籍id号：\t" << "书籍名称：" << endl;

									    for (int i = 0; i < book_len; i++)

									    {

									        cout << book[i].book_id << "\t\t" << book[i].book_name << endl;

									    }

									}

									int student_id_exist(int id)//二分查找

									{

									    int left = 0;

									    int right = student_len;

									    int mid = 0;

									    while (left < right)

									    {

									        mid = (left + right) / 2;

									        if (id == student[mid].get_id())

									            return mid;

									        if (id > student[mid].get_id())

									            left = mid + 1;

									        else if (id < student[mid].get_id())

									            right = mid;

									    }

									    return -1;

									}

									int manager_id_exist(int id)

									{

									    for (int i = 0; i < manager_len; i++)

									    {

									        if (manager[i].get_id() == id)

									        {

									            return i;

									        }

									    }

									    return -1;

									}

									int book_id_exist(int id)

									{

									    int left = 0;

									    int right = book_len;

									    int mid = 0;

									    while (left < right)

									    {

									        mid = (left + right) / 2;

									        if (id == book[mid].get_book_id())

									            return mid;

									        if (id > book[mid].get_book_id())

									            left = mid + 1;

									        else if (id < book[mid].get_book_id())

									            right = mid;

									    }

									    return -1;

									}

									int class_id_exist(int id)

									{

									    int left = 0;

									    int right = class_len;

									    int mid = 0;

									    while (left < right)

									    {

									        mid = (left + right) / 2;

									        if (id == clazz[mid].get_class_id())

									            return mid;

									        if (id > clazz[mid].get_class_id())

									            left = mid + 1;

									        else if (id < clazz[mid].get_class_id())

									            right = mid;

									    }

									    return -1;

									}

									bool student_cmp(Student a, Student b)

									{

									    return  a.id < b.id;

									}

									bool class_cmp(Clazz a, Clazz b)

									{

									    return a.get_class_id() < b.get_class_id();

									}

									bool book_cmp(Book a, Book b)

									{

									    return a.get_book_id() < b.get_book_id();

									}

									void existSystem()

									{

									    cout << "欢迎下次使用" << endl;

									    system("pause");

									    exit(0);

									}

									int random_id() //产生随机书籍编号

									{

									    int id;

									    for (int i = 0; i < 8; i++)

									    {

									        id = rand();

									    }

									    return id;

									}

									string input_password()

									{

									    char temp_password[20];

									    int len = 0; char key;

									    while ((key = _getch()) != '\r')//不可见输入

									    {

									        if (len < 12)

									        {

									            temp_password[len++] = key;

									            putchar('*');

									        }

									        else

									        {

									            cout << endl << endl;;

									            cout << "\t  密码过长" << endl;

									        }

									    }

									    temp_password[len] = '\0';//字符串结束标记：\0;

									    cout << endl;

									    return temp_password;

									}

									void load_information()

									{

									    ifstream fin;

									    fin.open(BOOK_FILE, ios::in);

									    if (fin.is_open() == false)

									    {

									        cout << "文件打开失败！" << endl;

									    }

									    fin >> book_len;

									    for (int i = 0; i < book_len; i++)

									    {

									        fin >> book[i].book_id >> book[i].book_name >> book[i].book_total_num

									            >> book[i].book_student_len >> book[i].book_author >> book[i].book_type

									            >> book[i].book_present;

									    }

									    fin.close();

									    fin.open(CLASS_FILE, ios::in);

									    if (fin.is_open() == false)

									    {

									        cout << "文件打开失败！" << endl;

									    }

									    fin >> class_len;

									    for (int i = 0; i < class_len; i++)

									    {

									        fin >> clazz[i].class_id >> clazz[i].class_name >> clazz[i].teacher_name;

									    }

									    fin.close();

									    fin.open(STUDENT_FILE, ios::in);

									    if (fin.is_open() == false)

									    {

									        cout << "文件打开失败！" << endl;

									    }

									    fin >> student_len;

									    for (int i = 0; i < student_len; i++)

									    {

									        fin >> student[i].id >> student[i].name >> student[i].mark>>student[i].student_grade>> student[i].class_id 

									            >> student[i].student_gender >> student[i].password >> student[i].student_book_len;

									    }

									    fin.close();

									    sort(book, book + book_len, book_cmp);

									    sort(clazz, clazz + class_len, class_cmp);

									    sort(student, student + student_len, student_cmp);

									}

									void update_information()

									{

									    ofstream fou;

									    fou.open(BOOK_FILE, ios::out);

									    if (fou.is_open() == false)

									    {

									        cout << "文件打开失败！" << endl;

									    }

									    fou << book_len << endl;

									    for (int i = 0; i < book_len; i++)

									    {

									        fou << book[i].book_id << " " << book[i].book_name << " " << book[i].book_total_num << " " << book[i].book_student_len

									            << " " << book[i].book_author << " " << book[i].book_type << " " << book[i].book_present << endl;

									    }

									    fou.close();

									    fou.open(CLASS_FILE, ios::out);

									    if (fou.is_open() == false)

									    {

									        cout << "文件打开失败！" << endl;

									    }

									    fou << class_len << endl;

									    for (int i = 0; i < class_len; i++)

									    {

									        fou << clazz[i].class_id <<" "<< clazz[i].class_name <<" "<< clazz[i].teacher_name << endl;

									    }

									    fou.close();

									    fou.open(STUDENT_FILE, ios::out);

									    if (fou.is_open() == false)

									    {

									        cout << "文件打开失败！" << endl;

									    }

									    fou << student_len << endl;

									    for (int i = 0; i < student_len; i++)

									    {

									        fou << student[i].id << " " << student[i].name << " " << student[i].mark<<" "<<student[i].student_grade<<" "<<student[i].class_id

									            << " " << student[i].student_gender << " " << student[i].password << " " << student[i].student_book_len << endl;

									    }

									    fou.close();

									}