Exemplo n.º 1
0
        static void Main(string[] args)
        {
            Mammal mammal = new Mammal();

            mammal.Name = "포유류";
            mammal.Nurse();

            Dog ppoppi = new Dog();

            ppoppi.Name = "뽀삐";
            ppoppi.Nurse();
            ppoppi.Bark();

            Cat chichi = new Cat();

            chichi.Name = "치치";
            chichi.Meow();

            if (ppoppi is Mammal) //true
            {
                Console.WriteLine("형변환을 할 수 있습니다");
                Mammal mammal1 = ppoppi as Mammal; //참조형식은 as를 써서 형변환
                mammal1.Nurse();
                //mammal1.Bark(); //안됨
            }
        }
Exemplo n.º 2
0
        static void Main(string[] args)
        {
            Mammal mammal = new Mammal();

            mammal.Name = "포유류";
            mammal.Nurse();

            Dog ppoppi = null; // new Dog();

            /*ppoppi.Name = "뽀삐";
             * ppoppi.Nurse();
             * ppoppi.Bark();*/

            /*Cat chichi = new Cat();
             * chichi.Name = "치치";
             * chichi.Nurse();
             * chichi.Meow();*/

            if (ppoppi is Mammal) // 뽀삐는 포유류인가????
            {
                // 값형식은 long = int값;
                Mammal mammal1 = ppoppi; // 참조형식은 as를 써서 형변환
                mammal1.Nurse();
                // mammal1.Bark();  // error
            }

            if (mammal is Dog)
            {
                ppoppi = mammal as Dog;
                ppoppi.Nurse();
                ppoppi.Bark();
            }
        }