30. Count Set Bits in an Integer

#include <stdio.h>

int countSetBits(unsigned int n) {
    // Write your code here
    int countSetBit = 0;
    while(n != 0)
    {
        //if((n & 1) == 1)
        //    countSetBit++;
        countSetBit += (n & 1);
        n >>= 1;
    }

    return countSetBit;
}

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