Question

Exercise #1: Design and implement a program (name it ProcessGrades) that reads from the user four integer values between 0 and 100, representing grades. The program then, on separate lines, prints out the entered grades followed by the highest grade, lowest grade, and averages of all four grades. Format the outputs following the sample runs below.

Sample run 1:

You entered:    95, 80, 100, 70

Highest grade: 100

Lowest grade:   70

Average grade: 86.25

Sample run 2:

You entered:    50, 86, 63, 72

Highest grade: 86

Lowest grade:   50

Average grade: 67.75

Sample run 3:

You entered:    70, 70, 70, 70

Highest grade: 70

Lowest grade:   70

Average grade: 70.00

Answer 1

import java.util.Scanner;

public class ProcessGrades {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter four grades: ");
        int grade1 = in.nextInt(), grade2 = in.nextInt(), grade3 = in.nextInt(), grade4 = in.nextInt();
        int max = grade1, min = grade1;

        if(grade2 > max) max = grade2;
        if(grade3 > max) max = grade3;
        if(grade4 > max) max = grade4;

        if(grade2 < min) min = grade2;
        if(grade3 < min) min = grade3;
        if(grade4 < min) min = grade4;

        System.out.println("You entered:    " + grade1 + ", " + grade2 + ", " + grade3 + ", " + grade4);
        System.out.println("Highest grade:  " + max);
        System.out.println("Lowest grade:   " + min);
        System.out.println("Average grade:  " + ((grade1 + grade2 + grade3 + grade4) / 4.0));
    }

}