TestAverage1.java

//TestAverage1.java

import java.util.Scanner; // Needed for the scanner class

/**
    This program demonstrates a user controlled loop.
*/

public class TestAverage1
{
  public static void main(String[] args)
  {
    int score1, score2, score3;       // Three test scores
    double average;                   // Average test score
    char repeat;                      // To hold 'y' or 'n'
    String input;                     // To hold input

    System.out.println("This program calculates the " +
                        "average of three test scores.");

    // Create a Scanner object for keyboard input.
    Scanner keyboard = new Scanner(System.in);

    // Get as many sets of test scores as the user wants.
    do
    {
        // Get the first test score in this set.
        System.out.print("Enter score #1: ");
        score1 = keyboard.nextInt();

        // Get the second test score in this set.
        System.out.print("Enter score #2: ");
        score2 = keyboard.nextInt();

        // Get the third test score in this set.
        System.out.print("Enter score #3: ");
        score3 = keyboard.nextInt();

        // Consume the remaining newline.
        keyboard.nextLine();

        // Calculate and print the average test score.
        average = (score1 + score2 + score3) / 3.0;
        System.out.println("The average is " + average);
        System.out.println();             // Prints a blank line.

        // Does the user want to average another set?
        System.out.println("Would you like to average " +
                            "another set of test scores?");
        System.out.println("Enter Y for yes or N for no: ");
        input = keyboard.nextLine();      // Read a line.
        repeat = input.charAt(0);         // Get the first char.

    } while (repeat == 'Y' || repeat == 'y');
  }
}