GradeProgram.java

import java.util.Scanner;

public class GradeProgram {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter your grade (0-100): ");

        int grade = scanner.nextInt();
        
        if (grade >= 90 && grade <= 100) {
            System.out.println("Your grade is A.");

        } else if (grade >= 80 && grade < 90) {
            System.out.println("Your grade is B.");
            
        } else if (grade >= 70 && grade < 80) {
            System.out.println("Your grade is C.");

        } else if (grade >= 60 && grade < 70) {
            System.out.println("Your grade is D.");

        } else if (grade >= 0 && grade < 60) { 
            System.out.println("Your grade is F.");

        } else {
            System.out.println("Invalid grade! Please enter a number between 0 and 100.");               
            
        } 
        scanner.close();      
}
}