public static void Main()
{
Console.WriteLine("*************Chicken*****************");
var chip = new Chicken();
Console.WriteLine("Chip says: {0}", chip.MakeSound());
Console.WriteLine("Chip eats: {0}", chip.HowToEat());
Console.WriteLine("*************Tiger*****************");
var purma = new Tiger();
Console.WriteLine("Purma says: {0}", purma.MakeSound());
Console.WriteLine("*************Apple*****************");
var china = new Apple();
Console.WriteLine(china.HowToEat());
Console.WriteLine("*************Orange*****************");
var sanh = new Orange();
Console.WriteLine(sanh.HowToEat());
Console.ReadKey();
}