C program to show use of Structure concept.

//C program to demonstrate use of Structure for storing a Book detains for Library Program.

#include <stdio.h>
#include <string.h>

struct Book{
   int   book_id;
   char  book_title[30];
   char  book_publisher[30];
   char  book_subject[30];
};

int main( ) {

   struct Book myBook;  // Declare variable of type Book

   //Initialise values to myBook variable
   myBook.book_id=101;
 
   printf("Enter Book Title:");
   gets(myBook.book_title);
 
   printf("Enter Book Publisher Name:");
   gets(myBook.book_publisher);
 
   printf("Enter Book Subject:");
   gets(myBook.book_subject);
 
   /* print myBook details */
   printf( "Book ID: %d\n", myBook.book_id);
   printf( "Book Title: %s\n", myBook.book_title);
   printf( "Book Publisher Name : %s\n", myBook.book_publisher);
   printf( "Book Subject : %s\n", myBook.book_subject);
   return 0;
}

Output of program

Enter Book Title:Computer Studies
Enter Book Publisher Name:ABC India
Enter Book Subject:Computer Science
Book ID: 101
Book Title: Computer Studies
Book Publisher Name : ABC India
Book Subject : Computer Science