基础的类的声明及使用/方法

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace 类的练习{    class Program    {        static void Main(string[] args)        {            Person my = new Person();            my.age = 20;            my.name = "王晓明";            my.hight = 176;            my.SayHello();            Console.ReadKey();        }    }    class Person //声明人类    {        public int age;        public string name;        public int hight;        public void SayHello()         {            Console.WriteLine("大家好,我是{0},我今年{1}岁了,身高是{2}",this.name,this.age,this.hight);//this.我自己的        }    }}