图书管理系统

#include <iostream> #include <fstream> #include <stdio.h> #include <conio.h> class Book { private: char booknum[5]; char bookname[41]; char author[21]; char id[16]; char state[10]; char bookkind[26]; public:int book1num; Book() { strcpy(bookname,"null"); strcpy(author,"null"); strcpy(id,"null"); strcpy(state,"null"); strcpy(bookkind,"null"); } void setbookinfo() { cin.ignore(); cout<<"请输入书名："<<endl; cin.getline(bookname,40); cout<<"请输入书号："<<endl; cin.getline(id,25); cout<<"请输入书的作者："<<endl; cin.getline(author,20); cout<<"请输入书的数量："<<endl; cin>>book1num; cin.clear(); cin.ignore(); cout<<"请输入书的种类："<<endl; cin.getline(bookkind,20); cout<<"请输入书的状态:（在馆/借出）"<<endl; cin.getline(state,10); } void getbookinfo() { cout.width(5); cout<<id; cout.width(21); cout<<bookname; cout.width(15); cout<<author; cout.width(15); cout<<bookkind; cout.width(5); cout<<book1num; cout.width(5); cout<<state<<endl; } char *getid() {return id;} char *getbookname() {return bookname;} char *getkind() {return bookkind;} char *getauthor() {return author;} char *getstate() {return state;} }; class user { private: char studentid[15]; char name[21]; char age[5]; char phonenum[15]; char cclass[10]; char password[21]; public: void setdetail() { cout<<"请输入学号："; cin.getline(studentid,24); if(strlen(studentid)>14) { cout<<"太长，前14字符个有效\n"; studentid[14]='\0'; } cout<<"请输入用户名："; cin.getline(name,31); if(strlen(name)>20) { cout<<"太长，前20字符个有效\n"; name[20]='\0'; } cout<<"请输入密码："; cin.getline(password,31); if(strlen(password)>20) { cout<<"太长，前20字符个有效\n"; password[20]='\0'; } cin.clear(); cin.ignore(); } void getdetail() { cout.width(17); cout<<"学号"; cout.width(17); cout<<studentid; cout.width(21); cout<<"用户名"; cout.width(21); cout<<name; cout<<"密码"; cout.width(10); cout<<password<<endl; } void setuserinfo() { cout<<"\n\n\t\t请输入您的用户名: "; cin.getline(name,30); if(strlen(name)>20) { cout<<"太长，前20字符个有效\n"; name[20]='\0'; } cout<<" \n\n\t\t 请输入您的密码: "; int i; for(i=0; i <29; i++) { password[i]=getch(); if((int)password[i]==13) break; putchar('*'); } password[i]='\0';cout<<endl; if(strlen(password)>20) { cout<<"太长，前20字符个有效\n"; password[20]='\0'; } } void getuseinfo() { cout.width(21); cout<<name; cout.width(21); cout<<password; } char *id() { return studentid; } char *username() {return name; } char *studentpwd() {return password;} }; class nomaluser { private: Book book1; user user1; public: void displaybook() //显示所有图书的信息 { fstream file(filename,ios::in|ios::binary); if(!file) { cout<<"打开失败！！！"<<endl; return; } cout.width(7); cout<<"书号"; cout.width(21); cout<<"书名"; cout.width(15); cout<<"作者"; cout.width(15); cout<<"种类"; cout.width(5); cout<<"数量"; cout.width(5); cout<<"状态"<<endl; while(file.read((char *)&book1,sizeof(book1))) { book1.getbookinfo(); } file.close(); system("pause"); system("cls"); return; } void findbook() //查找图书 { bool c = false; char bookName1[20]; cout<<endl; cout<<"输入你要查找的书名 ："; cin.ignore(); cin>>bookName1; fstream file(filename,ios::binary|ios::in); while(file.read((char*)&book1,sizeof(book1))) { if(strcmp(book1.getbookname(),bookName1)==0) { c=true; cout<<endl; book1.getbookinfo(); system("pause"); system("cls"); } } file.close(); if(!c) cout<<"对不起，查无此书！！"<<endl; system("pause"); system("cls"); return; } void madifyuserinfo() //修改图书信息 { bool a=false; user user2; cin.ignore();cin.clear(); user2.setuserinfo(); system("cls"); fstream file(student,ios::binary|ios::in|ios::out); if(!file) { cout<<"文件打开失败！！"<<endl; return; } while(file.read((char*)&user1,sizeof(user1))) { if(strcmp(user1.username(),user2.username())==0&&strcmp(user1.studentpwd(),user2.studentpwd())==0) { int pos = file.tellg(); a=true; cout<<" ***************您原来的信息如下*************** "<<endl; user1.getdetail(); cout<<endl; cout<<"请重新输入您的信息: "<<endl; cin.clear(); user1.setdetail(); cout<<" 修改成功"<<endl; system("pause"); system("cls"); file.seekg(pos-sizeof(user1),ios::beg); file.write((char *)&user1,sizeof(user1)); file.close(); break; } } } void displayuserinfo() //显示本人用户信息 {