观察者模式--初学入门

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
MSG msg = new MSG();//面试的面试官
msg.ShowMessage();//面试官出题
//面试中
GCZ1 one = new GCZ1(msg);//面试者1
msg.Add(one);
GCZ2 two = new GCZ2(msg);//面试者2
msg.Add(two);

msg.state = "2";//面试状态
msg.Result();
}
}
}