static void Main(string[] args)
{
var sq = new Square {
Side = 4
};
var rc = new SquareToRectangleAdapter(sq);
Console.WriteLine(ExtensionMethods.Area(rc));
}
static void DemoAdapter()
{
var square = new Adapter.Square()
{
Side = 12
};
var adpetedSquare = new SquareToRectangleAdapter(square);
var area1 = Math.Pow(square.Side, 2);
var area2 = adpetedSquare.Area();
Console.WriteLine($"Square area is { area1 } and Rectangle area is { area2 }");
}