basics5.java

package irene;
import java.util.Scanner;

public class basics5 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

      
        System.out.print("Enter your marks (0 to 100): ");
        double marks = scanner.nextDouble();

     
        if (marks >= 90 && marks <= 100) {
            System.out.println("Your grade is: A");
        } else if (marks >= 75) {
            System.out.println("Your grade is: B");
        } else if (marks >= 60) {
            System.out.println("Your grade is: C");
        } else if (marks >= 40) {
            System.out.println("Your grade is: D");
        }
          else {
            System.out.println("Invalid marks entered.");
        }

        scanner.close();
    }
}