Structure and Pointers

# include <stdio.h>

int main( )
{
	// Declare structure book
	struct book 
	{
		char n[ 20 ] ;
		int nop ;
		float pr ;
	} ;
    // Initialize structure variable
	struct book b = { "Basic", 425, 135.00 } ;
	// Declare pointer to structure variable
    struct book *ptr;
	// Store address of structure variable
    ptr = &b;
    // Access structure elements using dot operator
    printf ( "%s %d %f\n", b.n, b.nop, b.pr  ) ;
    // Access structure elements using arrow operator
    printf ( "%s %d %f\n", ptr->n, ptr->nop, ptr->pr  ) ; 
}