Count Set Bits in an Integer

Code

#include <stdio.h>

int countSetBits(unsigned int n) {
    int set_bit_cnt = 0;
    while (n) {
        set_bit_cnt = set_bit_cnt + (n & 1);
        n = (n >> 1);
    }
    return set_bit_cnt;
}

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

Solving Approach