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阅读程序，写出程序运行结果。using System;using System.Collections.Generic;public delegate void sayhellodelegate(string name);class Program{static void Main(string[] args){List pp = new List();pp.Add(new People { Name = "马大云", Country = "中国", sayfunction = Chinesenihao });pp.Add(new People { Name = "Bill Gat", Country = "USA", sayfunction = EnglishHello });pp.ForEach(p => Say(p));Console.ReadKey();}public static void Say(People p){p.sayfunction(p.Name);}public static void Chinesenihao(string name){Console.WriteLine("{0}:老表,吃饭没?",name);}public static void EnglishHello(string name){Console.WriteLine("{0}:hi,the weather is nice today.",name);}}public class People{public string Name { get; set; }public string Country { get; set; }public sayhellodelegate sayfunction { get; set; }}

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阅读程序，写出程序运行结果。using System;public delegate double MyDelegate(double x,double y);class Program{static void Main(string[] args){//第1空MyDelegate md = new MyDelegate(Add);Console.WriteLine(md(2, 3));//第2空md = md + new MyDelegate(Minus);Console.WriteLine(md(2, 3));//第3空md = md + delegate(double x, double y) {Console.WriteLine(xy);return x y; };Console.WriteLine(md(2, 3));//第4空md = md - new MyDelegate(Minus);Console.WriteLine(md(2, 3));Console.ReadKey();}public static double Add(double x, double y){Console.WriteLine(x+y);return x + y;}public static double Minus(double x, double y){Console.WriteLine(x-y);return x - y;}}

阅读程序，写出程序运行结果。using System;delegate void MyDel(string value);class Program{void Print1(string value){Console.WriteLine("方法1:{0}", value);}void Print2(string value){Console.WriteLine("方法2:{0}", value);}void Print3(string value){Console.WriteLine("方法3:{0}", value);}///
/// 执行委托方法///
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类时存储在（）的引用类型；结构是存储在（）的值类型