package class3_1_Decisions; // Josiah Yoder, MSOE, 21 September 2015

import javax.swing.*;
import java.util.Scanner;

public class CircleDecisionsGui {
    public static void main(String[] args) {

        // GUI: TO be continued...

        //final double PI = 3.141592;
        Scanner in = new Scanner(System.in);

        JOptionPane.showMessageDialog(null, "Please enter the radius of a circle");
        // TODO: How to input a NUMBER with JOptionPane?
        double radius = in.nextDouble();

        String line = JOptionPane.showInputDialog(null, "What do you want to do?\n"+
                "To compute the area of the circle, enter a.\n" +
                "Or, enter c for circumference: ");

        char c = line.charAt(0);

        if(c=='a') {
            double area = Math.PI * radius * radius;
            JOptionPane.showMessageDialog(null, "The area is: " + area);
        } else if(c=='c') {
            double circumference = 2 * Math.PI * radius;
            JOptionPane.showMessageDialog(null, "The circumference is: " + circumference);
        } else {
            JOptionPane.showMessageDialog(null, "Unexpected command: " + c + " Please enter c or a next time.");
        }
        JOptionPane.showMessageDialog(null, "Thank you for using this program.");

    }
}