#include <stdio.h> int main () { int a = 27 ; int * ptr = & a ; int * ptr1 = NULL ; printf ( "The value of a is %d \n " , a ); printf ( "The value of a is %d \n " ,* ptr ); printf ( "The address of a is %p \n " ,& a ); printf ( "The address of a is %p \n " , ptr ); printf ( "The address of ptr is %p \n " ,& ptr ); printf ( "The value of some garbage is %p \n " , ptr1 ); printf ( "The address of some garbage is %p \n " ,& ptr1 ); return 0 ; }