C#学习笔记<三> 继承

m_<：这里记录C#学习的笔记，基础的语法略去，重点在类、方法、继承三项。

1 类继承

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Chinese p1 = new Chinese();
            Japanese p2 = new Japanese();
            p1.Name = "ZhengLantern";
            p1.Age = 20;
            p1.Hometown = "WuHan";
            p1.Kongfu();
            p1.SayHello();
            p2.QRZ();
            Console.ReadKey();
        }
    }

    class Person
    {
        public string Name {get; set;}
        public int Age {get; set;}
        public void SayHello()
        {
            Console.WriteLine("{0}", this.Name);
        }
    }
    class Chinese : Person   //继承Person
    {
        public string Hometown { get; set; }
        public void Kongfu()
        {
            Console.WriteLine("KO!");
        }
    }
    class Japanese : Person   //继承Person
    {
        public void QRZ()
        {
            Console.WriteLine("Stay at home.");
        }
    }
}

2

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Chinese p1 = new Chinese();
            Person p2 = p1;   //定义一个Person，并指向Chinese
            //Chinese p3 = p2;   类型错误
            Chinese p3 = (Chinese)p2;   //强制类型转换
            p1.Name = "ZhengLantern";
            p1.Age = 20;
            p1.Kongfu();
            p2.SayHello();
            Console.ReadKey();
            object ob = p1;   //object是所有类的基类
        }
    }

    class Person
    {
        public string Name {get; set;}
        public int Age {get; set;}
        public void SayHello()
        {
            Console.WriteLine("{0}", this.Name);
        }
    }
    class Chinese : Person
    {
        public string Hometown { get; set; }
        public void Kongfu()
        {
            Console.WriteLine("KO!");
        }
    }
}