// R15 solution
// Author: Chris Wilcox
// Date: 4/9/2015
// Class: CS160

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Scanner;

public class R15 {

    public static void main(String[] args) {
        readFile(args[0]);
        writeFile(args[1]);
    }

    public static void readFile(String inputFile) {

        double area, radius, width, height, base;
        try {
            Scanner reader = new Scanner(new File(inputFile));

            while (reader.hasNext()) {

                String shape = reader.next().toUpperCase();
                switch (shape) {
                case "CIRCLE":
                    radius = reader.nextDouble();
                    area = computeAreaCircle(radius);
                    System.out.printf("Circle: radius = %.2f, area = %.2f\n", radius, area);
                    break;
                case "RECTANGLE":
                    width = reader.nextDouble();
                    height = reader.nextDouble();
                    area = computeAreaRectangle(width, height);
                    System.out.printf("Rectangle: width = %.2f, height = %.2fm area = %.2f\n", width, height, area);
                    break;
                case "TRIANGLE":
                    height = reader.nextDouble();
                    base = reader.nextDouble();
                    area = computeAreaTriangle(height, base);
                    System.out.printf("Triangle: base = %.2f, height = %.2f, area = %.2f\n", base, height, area);
                    break;
                }
            }

            // Not critical, but a good idea.
            reader.close();

        } catch (FileNotFoundException e) {
            System.out.println("Cannot read " + inputFile);
            System.exit(0);
        }
    }

    public static void writeFile(String outputFile) {

        try {
            PrintWriter writer = new PrintWriter(new File(outputFile));
            Scanner keyboard = new Scanner(System.in);
            
            System.out.println("Enter text:");
            while (true) {
                String line = keyboard.nextLine();
                if (line.equalsIgnoreCase("stop"))
                        break;
                writer.println(line);
            }

            // Important, writes the file!
            writer.close();

        } catch (FileNotFoundException e) {
            System.out.println("ERROR!");
            System.exit(0);
        }
    }

    public static double computeAreaCircle(double radius) {
        return Math.PI * radius * radius;
    }

    public static double computeAreaRectangle(double height, double width) {
        return width * height;
    }

    public static double computeAreaTriangle(double height, double base) {
        return (height * base) / 2.0;
    }

}