Count Set Bits in an Integer

Code

#include <stdio.h>

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

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

Solving Approach