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P2 CS201 GuessingGame starter
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| import java.util.Random; | |
| import java.util.Scanner; | |
| // We discussed academic honesty, so when you re-type this code, be sure to cite it in a comment! | |
| // This is the only time you MUST cite code from me, the instructor. | |
| public class GuessingGame { | |
| /** One more than the highest possible number in the game. */ | |
| private static final int HIGH = 100; | |
| /** The lowest possible number in the game. */ | |
| private static final int LOW = 0; | |
| /** | |
| * A Java program will run code in a special ``main`` method. | |
| * Note that Java has two types of comments: block (slash-star ... star-slash), | |
| * and line ("slash-slash") comments. | |
| * For now we ignore args, which is an array of strings that the user might have | |
| * passed in. | |
| * | |
| * @param args command line arguments. | |
| */ | |
| public static void main(String[] args) { | |
| // Create a random number generator: | |
| Random rand = new Random(); | |
| // Select a secret number. | |
| final int secretNumber = rand.nextInt(HIGH - LOW) + LOW; | |
| System.out.println("Welcome to the Guessing Game."); | |
| System.out.println("I have selected a number from [" + LOW + "," + HIGH + ")."); | |
| // Set the current guess to something that can't be correct. | |
| int guess = LOW - 1; | |
| // We use a Scanner to turn characters from System.in into numbers. | |
| Scanner scanner = new Scanner(System.in); | |
| while (guess != secretNumber) { | |
| System.out.println("What is your guess? "); | |
| if (!scanner.hasNextInt()) { | |
| String whatYouSaid = scanner.nextLine().trim(); | |
| System.out.println("Please enter a valid number! You said '" + | |
| whatYouSaid + "' but I don't understand."); | |
| // Continue takes us around the loop again. | |
| continue; | |
| } | |
| guess = scanner.nextInt(); | |
| // Give the player a hint! | |
| if (guess > secretNumber) { | |
| System.out.println("Your guess of " + guess + " is too high."); | |
| } else if (guess < secretNumber) { | |
| System.out.println("Your guess of " + guess + " is too low."); | |
| } | |
| } | |
| // The only way we exit the loop is if we have won. | |
| System.out.println("Congratulations, you've won!"); | |
| System.out.println("Thanks for playing!"); | |
| // Always close resources that you open (We'll talk more about this later). | |
| scanner.close(); | |
| } | |
| } |
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