#include <stdio.h>

void main(void)
 {
   printf("0 & 0 is %d\n", 0 & 0);
   printf("0 & 1 is %d\n", 0 & 1);
   printf("1 & 1 is %d\n", 1 & 1);
   printf("1 & 2 is %d\n", 1 & 2);
   printf("15 & 127 is %d\n", 15 & 127);
 }