Event Controlled Loops

Objectives

We would like to :

Understand and see examples of event controlled loops.

Notes

Unlike counter controlled loops, we might not know how many times we want to run the loop.
We might want to loop until an event occurs.
Ask the user to type in some numbers, 0 to stop, print the sum.
Generate a random number and ask the user to guess it.

import java.util.Scanner;

class Guess{
    public static final int MAX_VALUE = 3;

    public static void main(String[] args) {
        int playAgain = 1;
        int guess = 0;
        int number;
        int count;

        Scanner myScanner = new Scanner(System.in);

        while (playAgain == 1) {

            // play the game
            number = (int)(Math.random()*MAX_VALUE) + 1;
            guess = 0;
            count = 0;
            while (guess != number) {
                System.out.printf("Enter a number between 1 and %d => ",MAX_VALUE);
                guess = myScanner.nextInt();
                System.out.println();

                count++;
            }

            System.out.printf("Good job, you guessed it in %d trys!", count);


            System.out.printf("The number is %d\n", number);

            // ask to play again
            System.out.print("Do you want to play again (press 1 for yes) => ");
            playAgain = myScanner.nextInt();
            System.out.println();

        }

    }
}