Count Set Bits in an Integer

Code

#include <stdio.h>

int countSetBits(unsigned int n) {
    int nb=0;
    while(n>0){
        if((n&1<<0)==1){
            nb++;
        }
        n >>= 1;
    }
    return nb;
}

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

Solving Approach