//Program to calculate a student’s letter-grade based on
// the average of their best 2 test scores.
//The minimum average for each letter grade:
//	A:90		B:80		C:65		D:50
//
import javax.swing.*;
public class SelectionExample
{
   public static void main(String[] args)
   {
      //Constants: Grade Minimum Averages
      final int MINIMUM_A = 90;
      final int MINIMUM_B = 80;
      final int MINIMUM_C = 65;
      final int MINIMUM_D = 50;
      
      //Input three Test Scores
      String input;
      input = JOptionPane.showInputDialog(null, "1st Score?");
      int score1 = Integer.parseInt(input);
      
      input = JOptionPane.showInputDialog(null, "2nd Score?");
      int score2 = Integer.parseInt(input);
      
      input = JOptionPane.showInputDialog(null, "3rd Score?");
      int score3 = Integer.parseInt(input);
      
      //Find the lowest of the three Test Scorescores
      int lowest = score1;
      if (score2 < lowest)
         lowest = score2;
      if (score3 < lowest)
         lowest = score3;
      
      //Find the average of the two highest scores   
      double average = (score1 + score2 + score3 - lowest) / 2.0;
      
      //Calculate the Letter-Grade based on the average
      char grade = 'F';
      if (average >= MINIMUM_D)
         grade = 'D';
      if (average >= MINIMUM_C)
         grade = 'C';
      if (average >= MINIMUM_B)
         grade = 'B';
      if (average >= MINIMUM_A)
         grade = 'A';
      
      //Display the three Test Scores and Letter-Grade   
      String report = "Test Scores: " + score1 + ", " + score2 + ", " + score3 + 
                      " Average (best 2): " + average +
                      " Letter Grade: " + grade;
      JOptionPane.showMessageDialog(null, report);
   }
}