// this function ask the user for a number to calculate the number of odd bits
int main() {
unsigned long test;
printf("Please enter number to check: ");
scanf("%lu",&test);
printf("\nnumber of odd bits (in %lu) are: %d\n",test,count_odd_bits(test));
return(0);
}
int divby3(int x) {
int n = count_even_bits(x) - count_odd_bits(x);
switch(n) {
case 0:
case 3:
case 5:
case 6:
case 9:
case 12:
case 15:
case 18:
case 21:
case 24:
case 27:
case 30:
return 1;
default:
return 0;
}
}