import java.util.Scanner; import java.util.Random; /** * The Guess2 class is an application that uses a Random object to * to play a number guessing game with one computer player and one * human player. * * Bugs: The old bugs have been fixed by we've introduced new one. * Can you find them? * //YOU WILL ONLY NEED TO MAKE MINOR CHANGES/ADDITIONS TO FIX THEM! * * @author Eva Schiffer, copyright 2006, all rights reserved * @author Daniel Wong, modified 2008 * @author Jim Skrentny, modified 2009-2011 */ public class Guess2 { // YOU MAY ASSUME THE COMMENTS CORRECTLY DESCRIBE WHAT SHOULD HAPPEN. public static void main(String[] args) { //THESE DECLARATIONS ARE CORRECT. Random ranGen = new Random(8); // seeded to make debugging easier final int sides = 6; // number of sides for a die Scanner userInput = new Scanner(System.in); int userguess = -1; // user's guess, 1 - 6 inclusive int rolled = -1; // number rolled, 1 - 6 inclusive int computerPoints = 0; // computer's score, 0 - 5 max int humanPoints = 0; // human user's score, 0 - 5 max boolean rightGuess = false; // flag for correct guess //MAKE SURE THE PROGRAM PLAYS BY THESE RULES!!! System.out.println("Welcome to the Guess Game! RULES:"); System.out.println("1. We will play five rounds."); System.out.println("2. Each round you will guess the number rolled on a six-sided die."); System.out.println("3. If you guess the correct value in three or fewer tries " + " then you score a point, otherwise I score a point."); System.out.println("4. Whoever has the most points after five rounds wins."); // play five rounds for (int r = 0; r <= 5; r++) { // roll the die to start the round System.out.println(" ROUND " + r); System.out.println("-------"); rolled = ranGen.nextInt(sides+1); System.out.println("The computer has rolled the die."); System.out.println("You have three guesses."); // loop gives user up to three guesses rightGuess = false; int numGuesses = 0; // counts the number of guesses per round while (numGuesses < 3 || !rightGuess) { numGuesses++; // input & validation: must be in range 1 to 6 inclusive do { System.out.print(" What is your guess [1-6]? "); userguess = userInput.nextInt(); if ((userguess < 1) && (userguess > 6)) { System.out.println(" Please enter a valid guess [1-6]!"); } } while (userguess < 1 || userguess > 6); // did the user guess right? if (rolled == userguess) { System.out.println(" Correct!"); } else { System.out.println(" Incorrect guess."); } } // if the user guessed right, they get a point // otherwise the computer gets a point if (rightGuess) { computerPoints++; } else { humanPoints++; } // display the answer and scores System.out.println(" *** The correct answer was: " + rolled + " *** "); System.out.println("Scores:"); System.out.println(" You: \t\t" + humanPoints); System.out.println(" Computer: \t" + computerPoints); System.out.println(""); } // tell the user if they won or lost if (computerPoints > humanPoints) { System.out.println("*** You Lose! ***"); } else { System.out.println("*** You Win! ***"); } System.out.println("Thanks for playing the Guess Game!"); } // end main } // end class Guess