C# 抽象（4）

 abstract  class Human
    {
       
        public abstract void Think();

        public abstract int Age { get; set; }

        public void ShowType(Human human) => Console.WriteLine($"这个{human.GetType().FullName}");

    }
    
    class Iam : Human
    {
        public override int Age { get ; set ; }

        public override void Think() => Console.WriteLine("这个实现的父抽象类的方法");
       
    }
    class Program
    {
        static Iam iam;

        static void Main(string[] args)
        {

            iam = new Iam() { Age=18};

            ShowAge(iam);

            ChangeAge(iam);

            ShowAge(iam);

            Console.ReadKey();
        }

       static void ShowAge(Iam iam) => Console.WriteLine($"我的年龄{iam.Age}");

       static void ChangeAge(Human iam) => iam.Age = 22;
}