using System;
class Rect {
int width;
int height;
public Rect(int w, int h) {
width = w;
height = h;
}
public int area() {
return width * height;
}
public void show() {
Console.WriteLine(width + " " + height);
}
public Rect enlarge(int factor) {
return new Rect(width * factor, height * factor);
}
}
class MainClass {
public static void Main() {
Rect r1 = new Rect(4, 5);
Console.Write("Dimensions of r1: ");
r1.show();
Console.WriteLine("Area of r1: " + r1.area());
Console.WriteLine();
// create a rectangle that is twice as big as r1
Rect r2 = r1.enlarge(2);
Console.Write("Dimensions of r2: ");
r2.show();
Console.WriteLine("Area of r2 " + r2.area());
}
}
Dimensions of r1: 4 5
Area of r1: 20
Dimensions of r2: 8 10
Area of r2 80