TestAverage2.java

//TestAverage2.java

import java.util.Scanner;

/**
    This program demonstrates a nested loop.
*/

public class TestAverage2
{
  public static void main(String[] args)
  {
    int numStudents,      // Number of students
        numTests,         // Number of tests per students
        score,            // Test score
        total;            // Accumulator for test scores
    double average;       // Average test score

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

    // Get the number of students.
    System.out.print("How many students do you have? ");
    numStudents = keyboard.nextInt();

    // Get the number of test scores per student.
    System.out.print("How many test scores per student? ");
    numTests = keyboard.nextInt();

    // Process all the students
    for (int student = 1; student <= numStudents; student++)
    {
      total = 0;  // Set the accumulator to zero.

      // Get the test scores for a student.
      System.out.println("Studnent number " + student);
      System.out.println("---------------------");
      for (int test = 1; test <= numTests; test++)
      {
        System.out.print("Enter score " + test + ": ");
        score = keyboard.nextInt();
        total += score; // Add score to total
      }

      // Calculate and display the average.
      average = total / numTests;
      System.out.printf("The average for student %d is %.1f.\n\n",
                        student, average);
    }

  }
}