C Plus Plus Project : Libary Management

Cpp Project :libary manegement

 //libary manegement  
 #include<iostream>  
 #include<cstdio>  
 #define l 50  
 using namespace std;  
 char gr;  
 int total_book;  
 class book_class  
 {  
 private:  
   int book_id;  
   string book_title;  
   int book_edition;  
   string book_author;  
   string book_publisher;  
   int book_available;  
 public:  
   void book_entry (int i);  
   void book_search_issue();  
   void book_update();  
 } book[15];  
 int main()  
 {  
   int a,i=0;  
   while(1)  
   {  
     cout << "\n\n\n\n";  
     cout << "\t                       \n";  
     cout << "\t 1.Press 1 to entry new book information.  \n";  
     cout << "\t 2.Press 2 to search your book.       \n";  
     cout << "\t 3.Press 3 to updating book edition.    \n";  
     cout << "\t 4.Press 4 to EXIT             \n";  
     cout << "\t                       \n";  
     cout << "\t\n";  
     cout << "\n        What do you want?(1,2,3,4): ";  
     cin >> a;  
     while(a<1||a>4)  
     {  
       cout << "\n\tYour entry was invalid\n";  
       cout << "\tPlease select one of the action from the above list: ";  
       cin >> a;  
     }  
     switch(a)  
     {  
     case 1:  
       book[i].book_entry (i);  
       i++;  
       total_book=i;  
       break;  
     case 2:  
       book[i].book_search_issue();  
       break;  
     case 3:  
       book[i].book_update();  
       break;  
     }  
     if(a==4)  
       break;  
   }  
   return 0;  
 }  
 void book_class::book_entry (int i)  
 {  
   using namespace std;  
   book[i].book_id=i+1;  
   gr=getchar();  
   cout << "\n\tBook id      : 0" << book[i].book_id;  
   cout << "\n\tEnter title    : ";  
   getline(cin,book[i].book_title);  
   cout << "\tEnter edition   : ";  
   cin >> book[i].book_edition;  
   gr=getchar();  
   cout << "\tEnter author   : ";  
   getline(cin,book[i].book_author);  
   cout << "\tEnter publisher  : ";  
   getline(cin,book[i].book_publisher);  
   book[i].book_available=1;  
   cout << "\n\t\n";  
   cout << "\t  You have successfully entered another book info. \n";  
   cout << "\t\n\n";  
 }  
 void book_class::book_search_issue()  
 {  
   string search_title;  
   char deci;  
   int i,c=0;  
   gr=getchar();  
   cout << "\n\tType your Book title: ";  
   getline(cin,search_title);  
   for(i=0; i<total_book; i++)  
   {  
     if(search_title==book[i].book_title)  
     {  
       c++;  
       if(book[i].book_available==1)  
         c++;  
       break;  
     }  
   }  
   if(c==0)  
     cout << "\n\tSorry!! The Book Is Not In Our Index.\n";  
   if(c==1)  
     cout << "\n\tSorry!! The Book Is Not Available Now.Please come later.\n";  
   if(c==2)  
   {  
     cout << "\n\n\tIs this your book?";  
     cout << "\n\n";  
     cout << "\n\t  Book ID   : " << book[i].book_id;  
     cout << "\n\t  Title    : " << book[i].book_title;  
     cout << "\n\t  Edition no  : " << book[i].book_edition;  
     cout << "\n\t  Author    : " << book[i].book_author;  
     cout << "\n\t  Publisher  : " << book[i].book_publisher;  
     cout << "\n\t\n";  
     cout << "\n\tDo your want to issu this book?(y/n): ";  
     deci=getchar();  
     if(deci=='y'||deci=='Y')  
     {  
       cout << "\n\tYou have issued this book successfully.\n";  
       cout << "\tThank You \n";  
       book[i].book_available=0;  
     }  
     else  
     {  
       cout << "\n\tThank You. See you again.\n";  
     }  
   }  
 }  
 void book_class::book_update()  
 {  
   int id;  
   cout << "\n\tEnter Book id  : ";  
   cin >> id;  
   cout << "\n\tUpdate Edition : ";  
   cin >> book[id-1].book_edition;  
 }  
 //