Count Set Bits in an Integer

#include <stdio.h>

int countSetBits(unsigned int n) {
    // Write your code here
    // int milestone = 0xFF;
    int count = 0;
    for(; n != 0; n = n >> 1){
        count += (n & 1);
    }

    return count;
}

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