C# (CSharp) Fruit Pineapple.GrowInArea Examples

Example #1

        static void ShowPolymorphism()
        {
            Fruit f;

            f = new Apple();
            //这句输出什么？
            f.GrowInArea();
            f = new Pineapple();
            //与前面相同的代码，输出什么？
            f.GrowInArea();
        }