Struct_with_pointer_function.c

// author: jaydattpatel
#include <stdio.h>
#include <string.h>
 
struct Books
{
   char  title[50];
   char  author[50];
   char  subject[100];
   int   book_id;
}Book1;        /* Declare Book1 of type Book */

/* function declaration */
void printBook( struct Books *bookptr );
int main( )
{
    
   struct Books Book2;        /* Declare Book2 of type Book */
 
   /* book 1 specification */
   strcpy( Book1.title, "C Programming");
   strcpy( Book1.author, "Amit"); 
   strcpy( Book1.subject, "C Programming Tutorial");
   Book1.book_id = 6495407;

   /* book 2 specification */
   strcpy( Book2.title, "Telecom Billing");
   strcpy( Book2.author, "Rahul");
   strcpy( Book2.subject, "Telecom Billing Tutorial");
   Book2.book_id = 6495700;
 
   /* print Book1 info by passing address of Book1 */
   printBook( &Book1 );

   /* print Book2 info by passing address of Book2 */
   printBook( &Book2 );

   return 0;
}

void printBook( struct Books *bookptr ) 
{
   printf( "Book title : %s\n", bookptr->title);
   printf( "Book author : %s\n", bookptr->author);
   printf( "Book subject : %s\n", (*bookptr).subject);
   printf( "Book book_id : %d\n\n", (*bookptr).book_id);
}