Count Set Bits in an Integer

#include <stdio.h>

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

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