30. Count Set Bits in an Integer

#include <stdio.h>

int countSetBits(unsigned int n) {
    // Write your code here
    int set_count = 0;
    do{
        set_count = (n&1) ? set_count + 1 : set_count;
        n= n>>1;
    }while(n != 0);
    return set_count;
}

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