//CS5-HMC-Sp.,00-HW3-5
//A. Khakpour, Feb., 00

class Phone2
{
   //-----------------------------------------------------------------
   //  Produces a random phone number with various constraints.
   //-----------------------------------------------------------------
   public static void main (String[] args)
   {

      String result = "";
      int resint =0;
      // none of the first three digits is higher than 7
      result += (int) (Math.random() * 8);
      result += (int) (Math.random() * 8);
      result += (int) (Math.random() * 8);

      result += "-";

      // then next set of digits cannot be greater than 742

      resint = (int) (Math.random() * 743);

      if (resint < 10)
         result += "00";
      else if (resint < 100)
         result += "0";
    
      result += resint;

      result += "-";

      resint = (int) (Math.random() * 10000);

      if (resint < 10)
         result += "000";
      else if (resint < 100)
         result += "00";
      else if (resint < 1000)
         result += "0";

      result += resint;

      System.out.println ("A random phone number: " + result);
   }
}