Problem 3

CODE:

import java.util.Scanner;
 
class Student {
    void calculateAverage(int totalMarks, int numberOfSubjects) {
        if (totalMarks == 0 || numberOfSubjects == 0) {
            throw new ArithmeticException("Marks or subjects cannot be zero");
        }
        double avg = (double) totalMarks / numberOfSubjects;
        System.out.println("Average marks: " + avg);
    }
}
 
public class MarksValidationDemo {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        Student s = new Student();
 
        System.out.print("Enter total marks: ");
        int marks = sc.nextInt();
        System.out.print("Enter number of subjects: ");
        int subjects = sc.nextInt();
 
        try {
            s.calculateAverage(marks, subjects);
        } catch (ArithmeticException e) {
            System.out.println("Error: " + e.getMessage());
        }
    }
}

OUTPUT:

Enter total marks: 100
Enter number of subjects: 3
Average marks: 33.333333333333336
 
Enter total marks: 0
Enter number of subjects: 0
Error: Marks or subjects cannot be zero