30. Count Set Bits in an Integer

#include <stdio.h>

int countSetBits(unsigned int n) {
    // Write your code here
    int ans = 0;
    while (n!=0){
    if (n&1 ==1)
    { ans ++;}
     n= n>>1;
    }
return ans ;


}

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