30. Count Set Bits in an Integer

#include <stdio.h>

int countSetBits(unsigned int n) {
    
    int count = 0;
    while (n > 0){
        count = (n % 2) ? count + 1 : count;
        n /= 2;
    }
    return count;
}

int main() {
    int n;
    scanf("%d", &n);
    printf("%d", countSetBits(n));
    return 0;
}