import java.util.Scanner;
public class BooleanExpression2 {
    

    public static void main(String[] args) {
        

//QUESTİON 8.	What is wrong in the following code? 


    Scanner scanner = new Scanner(System.in);
    
    System.out.println("Enter your score, please. ");
    Double score = scanner.nextDouble();
    
    if (score >= 90.0) 
        System.out.println("Your grade letter is: A");
    else if (score >= 80.0)
        System.out.println("Your grade letter is: B");
    else if (score >= 70.0)
        System.out.println("Your grade letter is: C");
    else if (score >= 60.0) 
        System.out.println("Your grade letter is: D");
    else
        System.out.println("Your grade letter is: F");
    
    }
}


/*output:
Enter your score, please. 
59.90
Your grade letter is: F
*/