Count Set Bits in an Integer

Code

#include <stdio.h>

int countSetBits(unsigned int n) {
    int co  = 0;
    while(n)
    {
        n = n  & (n- 1);
        co++;
    }
    return co;
    // Write your code here
}

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

Solving Approach