#include <stdio.h>

void main ()
 {
   int age = 21;
   int height = 73;

   if (age == 21)
     printf("User's age is 21\n");

   if (age != 21)
     printf("User's age is not 21\n");

   if (height == 73) 
     printf("User's height is 73\n");

   if (height != 73)
     printf("User's height is not 73\n"); 
 }