static void Main(string[] args)
{
List <Dog> dogs = new List <Dog>();
//List<Cat> cats = new List<Cat>();
dogs.Add(new Dog());
dogs.Add(new Dog());
foreach (var item in dogs)
{
item.Eat();
item.Sleep();
item.Bark();
Console.WriteLine();
}
Console.WriteLine();
List <Cat> cats = new List <Cat>()
{
new Cat(), new Cat()
};
//cats.Add(new Cat());
//cats.Add(new Cat());
foreach (var item in cats)
{
item.Eat();
item.Sleep();
item.Meow();
Console.WriteLine();
}
Console.WriteLine();
Dog d = new Dog();
//d.Private();
//d.Protected(); //Program class는 같은 클래스도 아니고 파생 클래스도 아니다.
d.Public();
Console.WriteLine(d); //Inheritans.Dog
Console.WriteLine(d.ToString()); //Inheritans.Dog
Console.WriteLine();
string s = "홍길동";
Console.WriteLine(s); //홍길동
Console.WriteLine(s.ToString()); //홍길동
Console.WriteLine();
//p..331
List <Object> list = new List <object>(); //모든 클래스의 최상의 클래스는 object class.
list.Add(new Dog());
list.Add(new Cat());
list.Add(123);
list.Add(3.14);
foreach (var item in list)
{
Console.WriteLine(item);
Console.WriteLine(item.ToString());
}
}