#include <stdio.h>

int main() 
{
   unsigned char a = 076;

   unsigned char m;
   unsigned int cnt = 0;

   for (int i = 0; i < 8; i++) {
      m = 0001 << i;
      if (( a & m ) == m)
         cnt ++;
   }
 
   printf("There are %d 1 bits in %d\n", cnt, a);
   return 0;
}