Count Set Bits in an Integer

#include <stdio.h>

int countSetBits(unsigned int n) {
    // Write your code here
    int counter = 0;        
    for (int i = 0; i < 32; i++)
    {
        if ((n >> i) & 1)
        {
            counter++;
        }
    }

    return counter;
}

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