Count Set Bits in an Integer

Code

#include <stdio.h>

int countSetBits(unsigned int n)
{
    int counter = 0;


    while (n != 0)
    {
        if (n & 1)
        {
            counter++;
        }

        n >>= 1;
    }

    return counter;
}

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

Solving Approach