Untitled

public class Main {
    public static void main(String[] args) {
        double grade = -1;
        if (grade > 0 && grade < 40) {
            System.out.println("Fail");
        } else if (grade >= 40 && grade < 50) {
            System.out.println("Pass");
        } else if (grade >= 50 && grade < 70) {
            System.out.println("Good");
        } else if (grade >= 70 && grade < 80) {
            System.out.println("Merit");
        } else if (grade > 80 && grade <= 100) {
            System.out.println("Distinction");
        } else {
            System.out.println("Please input a valid grade.");
        }
    }
}