//
//
//	Prompt meg and let user input 0/1
//	0: read the side of a square and out its area
//	1:	read the radius and out the area of the circle
//

import java.util.Scanner;

class SquareOrCircle
{
	public static void main(String[] args)
	{
			Scanner input = new Scanner(System.in);
			int choice;
			double value, area;

			System.out.print("Input the choice (0/1): ");
			choice = input.nextInt();

			if(choice == 0)
			{
				System.out.print("Input the side of the square: ");
				value = input.nextDouble();
				area = value * value;
				System.out.println("The area of the sqaure is: "+area+"\n\n\n");
			}
			else if(choice == 1)
			{
				System.out.print("Input the radius of the circle: ");
				value = input.nextDouble();
				area = 3.14 * value * value;
				System.out.println("The area of the circle is: "+area+"\n\n\n");
			}
			else
			{
				System.out.println("Invalid input.\n\n\n");
			}
	}
}