print binary in c

1#include <iostream>
2using namespace std;
3int main() {
4   long n, d, r, binary = 0;
5   n=10;
6   d = n;
7   int temp = 1;
8   while (n!=0) {
9      r = n%2;
10      n = n / 2;
11      binary = binary + r*temp;
12      temp = temp * 10;
13   }
14   printf("%ld", binary);
15   return 0;
16}