C#委托

delegate void Do(int sleepSpan);
//typedef void (*Fun)(int sleepSpan);   C++

namespace ConsoleApplication1
{  
    class Program
    {
        public static void DoSomeThing(int sleepSpan)
        {
            DateTime dt = DateTime.Now;
            System.Console.WriteLine(dt.ToString());
            System.Threading.Thread.Sleep(sleepSpan);
        }

        public static void Loop(int sleepSpan,string title,Do doSome /*Fun fun   C++*/)
        {
            System.Console.WriteLine("开始{0}了", title);

            //Do dost = new Do(doSome);
            Do dost = doSome;

            while (true)
            {
                dost(sleepSpan);
                //fun(sleepSpan);    C++
            }
        }

        static void Main(string[] args)
        {
            Loop(1000,"显示时间",DoSomeThing);
        }
    }
}

1.与C++函数指针类似