#include <iostream.h>

void binary_print(int value)
{
   if ( value < 2 )                    // is the binary equivalent a digit?
      cout << value;                   //    yes! so, print it
   else
   {                                   //    no -- it's a (number.digit)
      binary_print( value / 2 );       //       print the number
      cout << value % 2;               //       print the digit
   }
}

int main ()
{
   int value;

   cout << "Enter a decimal value: ";
   cin  >> value;

   while (value > 0)
   {
      cout << "Binary = ";
      binary_print(value);
      cout << endl;

      cout << endl << endl
           << "Enter a decimal value: ";
      cin  >> value;
   }

}