Count Set Bits in an Integer

Code

#include <stdio.h>

int countSetBits(unsigned int n) {
    int count=0;
    
    do {
        if (n&2 != 0)
           count ++;
        n = n>>1;
    }while (n > 0);
    
    return count;
}

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

Solving Approach