闲来无事，用C++做了一个图书管理系统，主要有借书、还书、图书管理、用户管理等功能，主要用到的技术有容器和文件，以及类的封装

#include <iostream>#include <list>#include <algorithm>#include <string.h>#include <fstream>#include <stdlib.h> using namespace std;class Mybook;class Book; class Book{public: int id; //书号 char book_name[20]; //书名 int state; //图书状态 char place[20]; //图书所在位置 char stu_number[20]; //学号 char stu_name[20]; //学生姓名public: Book(); friend class Mybook;}; class User{public: char stu_number[20]; //学号 char stu_name[20]; //学生姓名public: User() { strcpy(stu_number,"000"); strcpy(stu_name,"0"); } friend class Mybook;}; class Mybook{private: list<Book> link_book; //保存书本信息 list<User> link_user; //保存用户信息public: int main_menu(); //主菜单 void getmenu(); //获取菜单 int menu(); //图书管理菜单 void getchoice(); //输入选择 void add_book(); //添加图书 void display_book(); //显示图书信息 void del_book(); //删除图书信息 void search_book(); //搜索图书信息 void update_book(); //修改图书信息 void borrow_book(); //借书 void return_book(); //还书 int menu_user(); //管理用户菜单 void add_user(); //添加用户 void del_user(); //删除用户 void display_user(); //查看用户 void update_user(); //修改用户 void look_borrow(); //查看借阅图书情况 void get_user(); //用户管理 void recv_file(); //将数据保存到文件中 void read_file(); //将数据从文件中读取 void recv_user(); //将用户信息保存到文件 void read_user(); //将用户信息从文件读取}; Book::Book(){ state = 0; strcpy(stu_number,"000"); strcpy(stu_name,"0");}//保存图书信息到文件void Mybook::recv_file(){ ofstream outfile("library.txt",ios::out); if(!outfile) { cout<<"文件打开失败"<<endl; return ; } sleep(1); list<Book>::iterator p = link_book.begin(); while(p != link_book.end()) { outfile<<p->id<<endl; outfile<<p->book_name<<endl; outfile<<p->state<<endl; outfile<<p->place<<endl; outfile<<p->stu_number<<endl; outfile<<p->stu_name<<endl; p++; } cout<<"保存完成！"<<endl; outfile.close();} void Mybook::read_file(){ ifstream infile("library.txt",ios::in); Book new_book; if(!infile) { cout<<"read fail"<<endl; return ; } char temp[20]; while(!infile.eof()) { infile.getline(temp,'\n'); new_book.id = atoi(temp); memset(temp,0,20); infile.getline(new_book.book_name,'\n'); infile.getline(temp,'\n'); new_book.state = atoi(temp); memset(temp,0,20); infile.getline(new_book.place,'\n'); infile.getline(new_book.stu_number,'\n'); infile.getline(new_book.stu_name,'\n'); if(infile.eof()) { break; } link_book.push_back(new_book); } infile.close();}//保存用户信息void Mybook::recv_user(){ ofstream outfile("user.txt",ios::out); if(!outfile) { cout<<"文件打开失败"<<endl; return ; } sleep(1); list<User>::iterator p = link_user.begin(); while(p != link_user.end()) { outfile<<p->stu_number<<endl; outfile<<p->stu_name<<endl; p++; } cout<<"保存完成！"<<endl; outfile.close();}//读取数据至用户void Mybook::read_user(){ ifstream infile("user.txt",ios::in); if(!infile) { cout<<"文件打开失败！"<<endl; return ; } User new_user; while(!infile.eof()) { infile.getline(new_user.stu_number,'\n'); infile.getline(new_user.stu_name,'\n'); if(infile.eof()) { break; } link_user.push_back(new_user); } infile.close(); }//主菜单int Mybook::main_menu(){ int choice = 0; cout<<"\t\t\t\t===================================================="<<endl; cout<<"\t\t\t\t* 欢迎来到图书管理系统 *"<<endl; cout<<"\t\t\t\t*--------------------------------------------------*"<<endl; cout<<"\t\t\t\t* 1、借书 *"<<endl; cout<<"\t\t\t\t* 2、还书 *"<<endl; cout<<"\t\t\t\t* 3、图书管理 *"<<endl; cout<<"\t\t\t\t* 4、用户管理 *"<<endl; cout<<"\t\t\t\t* 0、保存并退出 *"<<endl; cout<<"\t\t\t\t*__________________________________________________*"<<endl; cout<<"\t\t\t\t\t请输入选择:"; cin>>choice; while(!(choice >= 0 && choice <= 4)) { cout<<"输入错误，请重新输入:"; cin>>choice; } return choice;}//执行主菜单void Mybook::getmenu(){ int choice = 0; read_user(); read_file(); while(1) { system("clear"); choice = main_menu(); switch(choice) { case 1: { borrow_book(); break; } case 2: { return_book(); break; } case 3: { getchoice(); break; } case 4: { get_user(); break; } case 0: { cout<<"正在保存，请稍后....."<<endl; recv_file(); exit(0); } } cout<<endl<<endl<<endl; cout<<"按任意键返回..."; getchar(); getchar(); }}//借书void Mybook::borrow_book(){ int flag = 0; int flag1 = 0; int flag2 = 0; char id[20]; char name[20]; char book_name[20]; cout<<"请输入学号:"; cin>>id; list<User>::iterator it = link_user.begin(); while(it != link_user.end()) { if(strcmp(it->stu_number,id) == 0) { strcpy(name,it->stu_name); flag2 = 1; break; } it++; } if(flag2 == 0) { cout<<"你没有借书权限！借书失败"<<endl; return ; } cout<<"请输入书名："; cin>>book_name; list<Book>::iterator p = link_book.begin(); while(p != link_book.end()) { if(strcmp(p->book_name,book_name) == 0) { cout<<"======================================="<<endl; cout<<"书号:"<<p->id<<endl; cout<<"书名:"<<p->book_name<<endl; if(p->state == 0) { cout<<"图书状态：未借阅!"<<endl; } else { cout<<"图书状态：已借阅!"<<endl; } cout<<"所在书架"<<p->place<<endl; flag1 = 1; } p++; } if(flag1 == 0) { cout<<"你所借阅的书不存在，借书失败！"; return ; } p = link_book.begin(); cout<<"已查找该图书，请输入书号进行借阅："; int book_id; cin>>book_id; while(p != link_book.end()) { if(strcmp(p->book_name,book_name) == 0 && p->id == book_id && p->state == 0) { strcpy(p->stu_number,id); strcpy(p->stu_name,name); p->state = 1; cout<<"借书成功！"<<endl; flag = 1; break; } p++; } if(flag == 0) { cout<<"该书已被借阅，借书失败！"; } }//还书void Mybook::return_book(){ char stu_id[20]; cout<<"请输入学号"; cin>>stu_id; int flag = 0; int flag1 = 0; list<Book>::iterator p = link_book.begin(); while(p != link_book.end()) { if(strcmp(p->stu_number,stu_id) == 0) { cout<<"==========================================="<<endl; cout<<"书号："<<p->id<<endl; cout<<"书名："<<p->book_name<<endl; flag = 1; } p++; } if(flag == 0) { cout<<"当前没有您没有借书"<<endl; return ; } else if(flag == 1) { cout<<"已经查询到你借阅的图书，请输入书号进行归还:"<<endl; } int id; cin>>id; p = link_book.begin(); while(p != link_book.end()) { if(strcmp(p->stu_number,stu_id) == 0&&p->id == id) { strcpy(p->stu_name ,"000"); strcpy(p->stu_number , "0"); p->state = 0; cout<<"还书成功！"<<endl; flag1 = 1; break; } p++; } if(flag1 == 0) { cout<<"输入书号错误，还书失败！"<<endl; }}//用户管理菜单int Mybook::menu_user(){ int choice = 0; cout<<"\t\t\t\t=========================================="<<endl; cout<<"\t\t\t\t* 用户管理 *"<<endl; cout<<"\t\t\t\t*----------------------------------------*"<<endl; cout<<"\t\t\t\t* 1、添加用户 *"<<endl; cout<<"\t\t\t\t* 2、显示用户 *"<<endl; cout<<"\t\t\t\t* 3、删除用户 *"<<endl; cout<<"\t\t\t\t* 4、修改用户 *"<<endl; cout<<"\t\t\t\t* 5、显示图书借用信息 *"<<endl; cout<<"\t\t\t\t* 6、保存并返回上一层 *"<<endl; cout<<"\t\t\t\t*----------------------------------------*"<<endl; cout<<"\t\t\t\t\t请输入选择:"; cin>>choice; while(!(choice >= 1 && choice <= 6)) { cout<<"输入错误，请重新输入:"; cin>>choice; } return choice; }//执行用户管理void Mybook::get_user(){ int choice = 0; while(1) { system("clear"); choice = menu_user(); system("clear"); switch(choice) { case 1: { add_user(); break; } case 2: { display_user(); break; } case 3: { del_user(); break; } case 4: { update_user(); break; } case 5: { look_borrow(); break; } case 6: { recv_user(); return ; } } cout<<endl<<endl<<endl; cout<<"按任意键返回..."; getchar(); getchar(); }}//添加用户void Mybook::add_user(){ User new_user; cout<<"请输入学号："; cin>>new_user.stu_number; cout<<"请输入姓名："; cin>>new_user.stu_name; link_user.push_back(new_user); cout<<"添加成功！"; cout<<"是否继续添加(y/n)"; char ch; cin>>ch; while(!(ch == 'Y'||ch == 'y'||ch == 'N'||ch == 'n')) { cout<<"输入有误，请重新输入："; cin>>ch; } if(ch == 'Y'||ch == 'y') { system("clear"); add_user(); }}//显示用户void Mybook::display_user(){ list<User>::iterator it = link_user.begin(); while(it != link_user.end()) { cout<<"====================================="<<endl; cout<<"学号："<<it->stu_number<<endl; cout<<"姓名："<<it->stu_name<<endl<<endl; it++; }}//删除用户void Mybook::del_user(){ char id[20]; cout<<"请输入你要删除的学生学号："; cin>>id; int flag = 0; list<User>::iterator it = link_user.begin(); while(it != link_user.end()) { if(strcmp(it->stu_number,id) == 0) { link_user.erase(it); flag = 1; break; } it++; } if(flag == 1) { cout<<"删除成功！"<<endl; } else { cout<<"你删除的用户不存在，删除失败！"<<endl; }}//修改用户信息void Mybook::update_user(){ cout<<"请输入你要修改的学号："<<endl; char number[20]; cin>>number; int flag = 0; list<User>::iterator it = link_user.begin(); while(it != link_user.end()) { if(strcmp(it->stu_number,number) == 0) { cout<<"请更新学号："; cin>>it->stu_number; cout<<"请更新姓名："; cin>>it->stu_name; flag = 1; break; } it++; } if(flag == 1) { cout<<"修改成功！"<<endl; } else { cout<<"修改失败！"<<endl; }}//查看已借阅图书情况void Mybook::look_borrow(){ int flag = 0; list<Book>::iterator p = link_book.begin(); while(p != link_book.end()) { if(p->state == 1) { cout<<"==================================================="<<endl; cout<<"姓名："<<p->stu_name<<endl; cout<<"学号："<<p->stu_number<<endl; cout<<"书名："<<p->book_name<<endl; cout<<"书架号："<<p->place<<endl; flag = 1; } p++; } if(flag == 1) { cout<<"已查询图书相关借阅信息"<<endl; } else { cout<<"目前暂时没有相关图书借阅!"<<endl; }}//图书管理菜单int Mybook::menu(){ int choice = 0; cout<<"\t\t\t\t\t============================================"<<endl; cout<<"\t\t\t\t\t* 图书管理 *"<<endl; cout<<"\t\t\t\t\t*------------------------------------------*"<<endl; cout<<"\t\t\t\t\t* 1、添加图书信息 2、显示图书信息 *"<<endl; cout<<"\t\t\t\t\t*------------------------------------------*"<<endl; cout<<"\t\t\t\t\t* 3、删除图书信息 4、搜索图书信息 *"<<endl; cout<<"\t\t\t\t\t*------------------------------------------*"<<endl; cout<<"\t\t\t\t\t* 5、更新图书信息 6、返回上一层 *"<<endl; cout<<"\t\t\t\t\t*------------------------------------------*"<<endl; cout<<"\t\t\t\t\t请输入选择:"; cin>>choice; while(!(choice >= 1 && choice <= 6)) { cout<<"输入错误，请重新输入:"; cin>>choice; } return choice; }//实行图书管理void Mybook::getchoice(){ int choice = 0; while(1) { system("clear"); choice = menu(); system("clear"); switch(choice) { case 1: { add_book(); break; } case 2: { display_book(); break; } case 3: { del_book(); break; } case 4: { search_book(); break; } case 5: { update_book(); break; } case 6: { return ; } } cout<<endl<<endl<<endl; cout<<"按任意键返回....."<<endl; getchar(); getchar(); }}//增加书本void Mybook::add_book(){ Book new_book; cout<<"请输入书号："; cin>>new_book.id; cout<<"请输入书名："; cin>>new_book.book_name; cout<<"请输入图书书架："; cin>>new_book.place; link_book.push_back(new_book); cout<<"添加成功！"; cout<<"是否继续添加(y/n)"; char ch; cin>>ch; while(!(ch == 'Y'||ch == 'y'||ch == 'N'||ch == 'n')) { cout<<"输入有误，请重新输入："; cin>>ch; } if(ch == 'Y'||ch == 'y') { system("clear"); add_book(); }}//显示书本信息void Mybook::display_book(){ list<Book>::iterator p = link_book.begin(); while(p != link_book.end()) { cout<<"======================================="<<endl; cout<<"书号:"<<p->id<<endl; cout<<"书名:"<<p->book_name<<endl; if(p->state == 0) { cout<<"图书状态：未借阅!"<<endl; } else { cout<<"图书状态：已借阅!"<<endl; } cout<<"所在书架"<<p->place<<endl<<endl; p++; }}//删除书本信息void Mybook::del_book(){ list<Book>::iterator p = link_book.begin(); int num = 0; int flag = 0; cout<<"请输入你要删除的书号："; cin>>num; while(p != link_book.end()) { if(p->id == num) { link_book.erase(p); flag = 1; break; } p++; } if(flag == 1) { cout<<"\n\n删除完成!"; } else { cout<<"\n\n该书不存在，删除失败！"<<endl; }}//搜索书本信息void Mybook::search_book(){ list<Book>::iterator p = link_book.begin(); char book_name[20]; int flag = 0; cout<<"请输入你要查找的书名："; cin>>book_name; while(p != link_book.end()) { if(strcmp(p->book_name,book_name) == 0) { cout<<"======================================="<<endl; cout<<"书号:"<<p->id<<endl; cout<<"书名:"<<p->book_name<<endl; if(p->state == 0) { cout<<"图书状态：未借阅!"<<endl; } else { cout<<"图书状态：已借阅!"<<endl; } cout<<"所在书架"<<p->place<<endl; flag = 1; } p++; } if(flag == 1) { cout<<"\n\n查找完成!"; } else { cout<<"\n\n目前图书馆暂无此书！"<<endl; }}//修改书本信息void Mybook::update_book(){ list<Book>::iterator p = link_book.begin(); int num = 0; int flag = 0; cout<<"请输入你要更新的书号："; cin>>num; while(p != link_book.end()) { if(p->id == num) { cout<<"请输入书名"; cin>>p->book_name; cout<<"请输入图书书架号:"; cin>>p->place; flag = 1; } p++; } if(flag == 1) { cout<<"\n\n更新完成!"; } else { cout<<"\n\n该书不存在，更新失败！"<<endl; }}int main(){ Mybook b; b.getmenu(); return 0;}

更多学习资料请关注专题《管理系统开发》。

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。