30. Count Set Bits in an Integer

#include <stdio.h>

int countSetBits(unsigned int n) {
    int count = 0;
     while(n>0){
        if(n%2 == 1){
            count++;
        }
        n = n/2;;
     }   
     return count;
}

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