상속, 예문, c#

Output

 

Code

 class Pet
    {
        public string name;
        public string color;

        public Pet()
        { 


        }

        public void About()
        {
            Console.WriteLine("부모에서 대표로 불러오는 상속 된 것: " + name +", " + color );
           

        }

    }

 

class Cat :Pet
    {
        string _sound;

        public Cat(string name, string color, string sound)
        {
            base.name = name;
            base.color = color;
            _sound = sound;

        }

        public new void About()
        {
            Console.WriteLine("cat: " + _sound);
        }

    }

    class Dog : Pet
    {
        string _dance;

        public Dog(string name, string color, string dance)
        {
            base.name = name;
            base.color = color;
            _dance = dance;
        }

        public new void About()
        {
            Console.WriteLine("dog: " + _dance);
        }
            
    }

 

Program.csclass Program
    {
        static void Main(string[] args)
        {
           
            Cat cat = new Cat("kitty","black","냐용");
            Pet pet = cat;

            //Pet pet = new Cat("kitty", "black", "냐용"); 
            //위 두개를 묶어서 쓸수 있음, 하지만 밑의 cat 클래스를 불러오기 위해 cat 인스탄스 필요.

            Dog dog = new Dog("Doggy","brown","댄스댄스");

            pet.About();

            Console.WriteLine("현재 상속한 자식의 이름: " + pet.name);

            cat.About();
            dog.About();

            Console.Read();


        }
    }

 

 

 

------------------------  

번외

public string Name;
public int Price;
public int Qy;

 //polymorphism --- overloading 
 public Items(string name, int price, int qy)
 {
   Name = name;
   Price = price;
   Qy = qy;

}