import java.io.*;

public class Main {
	public static void main (String argv[]) {
		Circle x = new Circle();
		System.out.println("before setting radius=10");
		System.out.println(x.area());
		System.out.println(x.getRadius());
		x.radius = 10;
		System.out.println("after setting radius=10");
		System.out.println(x.area());
		System.out.println(x.getRadius());
	}
}