Ex07, 19.06.2021

import java.util.Scanner;

public class Ex07 {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int y; // grade entered by the user
        int c = 0; // count valid grades
        int sum = 0;
        double avg;
        double max = 0;

        String className;
        int pupilsInClass;

        System.out.print("Enter class name: ");
        className = in.next();
        System.out.print("Enter number of pupils in class " + className + ": ");
        pupilsInClass = in.nextInt();

        for (int i = 0; i < pupilsInClass; i++) {
            // new student
            System.out.println("* * * New Pupil Data * * *");
            c = 0;
            sum = 0;

            // get first grade
            System.out.print("Enter your grade (0 to 100): ");
            y = in.nextInt();

            while (y >= 0 && y <= 100) {
                // valid grade
                c++; // add 1 to the counter
                sum = sum + y; // add grade to sum

                // get next grade
                System.out.print("Enter your grade (0 to 100): ");
                y = in.nextInt();
            }

            System.out.println("You have " + c + " grades");
            System.out.println("The sum of grades is " + sum);
            avg = (double) sum / c;
            System.out.println("The average is " + avg);

            if (avg > max) {
                max = avg;
            }
        }

        System.out.println("max class average is " + max);
        in.close();
    }
}