static void Main(string[] args) { ICoffee coffee = new Coffee(); Console.WriteLine("Price: " + coffee.Price() + " Ingrediants: " + coffee.Ingrediants()); coffee = new Milk(coffee); Console.WriteLine("Price: " + coffee.Price() + " Ingrediants: " + coffee.Ingrediants()); coffee = new Whip(coffee); Console.WriteLine("Price: " + coffee.Price() + " Ingrediants: " + coffee.Ingrediants()); Console.ReadLine(); }