/*
  High/Low Game #2
  written by Keith Fenske
  Tuesday, 23 April 2002
  Copyright (c) 2002 by Keith Fenske.  All rights reserved.

  This Java program plays a simple guessing game.  The computer picks a
  random number from 0 to 100, and the user tries to guess the number.

  This the second version of the High/Low game.  A separate "while" loop
  is used to check the user's input.
*/

import cs1.Keyboard;              // import Lewis/Loftus keyboard class
//                           http://duke.csc.villanova.edu/jss/keyboard.html

public class HighLow2
{
  public static void main(String[] args)
  {
    boolean ask;                  // true while we are asking for a guess
    int number;                   // the computer's random number
    int guess;                    // the user's guess

    System.out.println("\nWelcome to the High/Low game.");
    System.out.println("I will pick a random number from 0 to 100.");
    System.out.println("You must try to guess the number.");

    number = (int) (Math.random() * 101);

    do
    {
      // ask the user for a guess

      ask = true;                 // true until we get a good guess
      guess = 50;                 // initial value to make JBuilder happy
      while (ask)
      {
        System.out.print("\nWhat is your guess?  (0 to 100)  ");
        guess = Keyboard.readInt();
        if ((guess >= 0) && (guess <= 100))
          ask = false;            // this number is okay, so stop asking
        else
        {
          System.out.println("Sorry, but your guess " + guess
            + " must be from 0 to 100.");
        }
      }

      // check the user's guess against our random number

      if (guess < number)
      {
        System.out.println(guess + " is low.  Try a higher number.");
      }
      else if (guess > number)
      {
        System.out.println(guess + " is high.  Try a lower number.");
      }
      else // equal
      {
        // number is correct, and the "do" loop will end below
        System.out.println(guess + " is correct.  Congratulations!");
      }
    }
    while (guess != number);
    System.out.println("Thank you for playing High/Low!");
  }
}