Count Set Bits in an Integer

Code

#include <stdio.h>

int countSetBits(unsigned int n) {
    // Write your code here
    int cnt=0;
    for(int bit=31;bit>=0;bit--){
        if((n>>bit)&1 == 1){
            cnt++;
        }
    }
    return cnt;
}

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

Solving Approach