using namespace std;
#include <cmath>
#include <iostream>
int main()  
{  
  int var;                    
  int *pointer;  
   
  pointer = &var;  
  var  = 421;  
  printf("Address of the integer variable var : %p\n",&var);
  printf("Value of var : %d\n", var);
  printf("Value of the integer pointer variable: %p\n",pointer);
  printf("Value which pointer is pointing at :  %d\n",*pointer);
  printf("Address of the pointer variable : %p\n",&pointer);
  return 0;
}