Count Set Bits in an Integer

Code

#include <stdio.h>

int countSetBits(unsigned int n) {
    int cnt = 0;
    //while (n)
    for(int i=0;i<32;i++){
        if ((n>>i) & (0x01)){
            cnt++;
        }
    }
    return cnt;
}

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

Solving Approach