图书管理.c

图书管理系统

#include <iostream>
#include <fstream>
#include <stdio.h>       
#include <conio.h>
#define filename "F:\\book.dat"
#define student "F:\\student.dat"

using namespace std;
class Book
{ private: 
          char booknum[5];
         //   int booknum;
           char bookname[41];
           char author[21];
           char id[16];
           char state[10];
           char bookkind[26];
  public:int book1num;
         Book()
         {
               //strcpy(booknum,"");
               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);
            
        //     if(strlen(bookname)>40)
        //    {
         //      cout<<"太长，前40字符个有效\n";
          //     bookname[40]='\0';
         //   }
            cout<<"请输入书号："<<endl; 
            cin.getline(id,25);
            
        //     if(strlen(id)>15)
         //   {
           //    cout<<"太长，前15字符个有效\n";
           //    id[15]='\0';
          //  }
            cout<<"请输入书的作者："<<endl;
            cin.getline(author,20);
            
         //    if(strlen(author)>20)
         //   {
           //    cout<<"太长，前20字符个有效\n";
          //     author[20]='\0';
         //   }
            cout<<"请输入书的数量："<<endl;
            cin>>book1num;//zj
            
          //   if(strlen(booknum)>2)
          //  {
          //     cout<<"太长，前2字符个有效\n";
           //    booknum[2]='\0';
           // }
           cin.clear();
           cin.ignore();
            cout<<"请输入书的种类："<<endl;
            cin.getline(bookkind,20);
          //    if(strlen(bookkind)>25)
         //   {
          //     cout<<"太长，前25字符个有效\n";
          //     bookkind[25]='\0';
         //   }
            cout<<"请输入书的状态:（在馆/借出）"<<endl;
            cin.getline(state,10);
            // if(strlen(state)>4)
         //   {
           //   cout<<"太长，前4字符个有效\n";
          //     state[4]='\0';
          //  }
         }
         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; //zj
            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;}
           
          // char *getnum()
           //{return book1num;}  
           
}; 
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<<"请输入年龄：";
             cin.getline(age,10);
               if(strlen(age)>4)
            {
               cout<<"太长，前4字符个有效\n";
               age[4]='\0';
            }
             cout<<"请输入联系电话：";
             cin.getline(phonenum,34);
              if(strlen(phonenum)>14)
            {
               cout<<"太长，前20字符个有效\n";
               phonenum[14]='\0';
            }
             cout<<"请输入班级：";
             cin.getline(cclass,19);
             if(strlen(cclass)>9)
            {
               cout<<"太长，前9字符个有效\n";
              cclass[9]='\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.width(10);
              cout<<"年龄"<<endl;
              cout.width(10);
              cout<<age<<endl;
              cout.width(17);
              cout<<"联系电话";
              cout.width(17);
              cout<<phonenum;
              cout.width(21);
              cout<<"班级";
              cout.width(21);
              cout<<cclass; 
              cout.width(10);
              cout<<"密码";
              cout.width(10);
              cout<<password<<endl;
          }
        void setuserinfo()//zj
        {  
          // char n[21];char p[21];
           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;
           //cin.getline(password,30);
            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 *studentage()
        {return age;}
        char *studentphonenum()
        {return phonenum;}
        char  *studentpwd()
        {return password;}   
};   
class nomaluser
{  private: 
           Book book1;//zj
           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;
                 /*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;*/
                 user1.getdetail();
                 cout<<endl;
                 cout<<"请重新输入您的信息:   "<<endl;
                 //cin.ignore();
                 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 
          {
               user1.getdetail();
               
          }
          void givebackbook()                   //还书 
          {    char sISBN1[16];    
               bool b = false;
           cout<<" 请输入所还书的书籍号";
              cin.ignore(); 
               cin>>sISBN1;
             
               fstream file(filename,ios::binary|ios::in);   
              while(file.read((char*)&book1,sizeof(book1))) 
             {   
                if(strcmp(book1.getid(),sISBN1)==0)
              { 
             b = true;
              
            book1.book1num++;
            if (book1.book1num>0)
            strcpy(book1.getstate(),"在馆");
            
            system("pause");               
              system("cls");  
            }
            }cout<<"还书成功"<<endl;
           if(!b)
            {
                cout<<"输入了没有的书籍号"<<endl;
       
              system("pause");               
           system("cls");  
               }
               
           }
        void lendbook()                     //借书 
          {   
       bool a = false;
       char bookName1[20]; 
       
       cout<<"请 输 入 你 要 借 阅 的 书 名   :";
       cin.ignore(); 
       cin>>bookName1;
     fstream file(filename,ios::binary|ios::in|ios::out);  
     while(file.read((char*)&book1,sizeof(book1))) 
    {