[toe_cutter]

My code works fine for c++. You just need to include library stdio.h.

#include <stdio.h>
#include <iostream>
using namespace std;

void printBin( int var ) {
  int i;

  for (i=11; i>=0; i--)
    printf("%d", (var >> i) & 1);
  putchar('\n');
}

int main() {
  int n;  // number to convert to binary

    while (cin >> n) {
        if (n > 0) {
            cout << n << " (decimal) = ";
            printBin(n);
            cout << " (binary) in reverse order" << endl;
        } else {
            cout << "Please enter a number greater than zero." << endl;
        }
    }
  return 0;
}