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<<"tttt===================================================="<<endl; cout<<"tttt* 欢迎来到图书管理系统 *"<<endl; cout<<"tttt*--------------------------------------------------*"<<endl; cout<<"tttt* 1、借书 *"<<endl; cout<<"tttt* 2、还书 *"<<endl; cout<<"tttt* 3、图书管理 *"<<endl; cout<<"tttt* 4、用户管理 *"<<endl; cout<<"tttt* 0、保存并退出 *"<<endl; cout<<"tttt*__________________________________________________*"<<endl; cout<<"ttttt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<<"tttt=========================================="<<endl; cout<<"tttt* 用户管理 *"<<endl; cout<<"tttt*----------------------------------------*"<<endl; cout<<"tttt* 1、添加用户 *"<<endl; cout<<"tttt* 2、显示用户 *"<<endl; cout<<"tttt* 3、删除用户 *"<<endl; cout<<"tttt* 4、修改用户 *"<<endl; cout<<"tttt* 5、显示图书借用信息 *"<<endl; cout<<"tttt* 6、保存并返回上一层 *"<<endl; cout<<"tttt*----------------------------------------*"<<endl; cout<<"ttttt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<<"ttttt============================================"<<endl; cout<<"ttttt* 图书管理 *"<<endl; cout<<"ttttt*------------------------------------------*"<<endl; cout<<"ttttt* 1、添加图书信息 2、显示图书信息 *"<<endl; cout<<"ttttt*------------------------------------------*"<<endl; cout<<"ttttt* 3、删除图书信息 4、搜索图书信息 *"<<endl; cout<<"ttttt*------------------------------------------*"<<endl; cout<<"ttttt* 5、更新图书信息 6、返回上一层 *"<<endl; cout<<"ttttt*------------------------------------------*"<<endl; cout<<"ttttt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<<"nn删除完成!"; } else { cout<<"nn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<<"nn查找完成!"; } else { cout<<"nn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<<"nn更新完成!"; } else { cout<<"nn该书不存在,更新失败!"<<endl; } } int main() { Mybook b; b.getmenu(); return 0; }
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