#include<stdio.h>
struct book
{
   char name[20] ;
   float price ;
   int pages ;
};
void display(struct book *);
main( )
{
  struct book b1 = { "Let us C", 350.75, 550 } ;
  display ( &b1 ) ;
  printf ( "%s %0.2f %d\n", b1.name, b1.price, b1.pages ) ;
  system("pause");
}
display ( struct book *b )
{
  b->pages = 40;
  b->price = 50;      
  printf ( "%s %0.2f %d\n", b->name, b->price, b->pages ) ;
}