public static void LuyenTap_DaHinh()
{
Animal cat = new Cat();
cat.NhapThongTin("Nhap thong tin cho Meo:");
cat.XuatThongTin();
cat.Speak();
cat.Run();
cat.An();
Console.WriteLine("So luong animal hien tai la {0} ", Animal.Count);
Animal dog = new Dog();
dog.NhapThongTin("Nhap thong tin cho Cho:");
dog.XuatThongTin();
dog.Speak();
dog.Run();
dog.An();
Console.WriteLine("So luong animal hien tai la {0} ", Animal.Count);
Animal chicken = new Chicken();
chicken.NhapThongTin("Nhap thong tin cho Ga:");
chicken.XuatThongTin();
chicken.Speak();
chicken.Run();
chicken.An();
Console.WriteLine("So luong animal hien tai la {0} ", Animal.Count);
}