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;
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();
}以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程网。
