c# params

using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(Test("Jack"));//不传值，显示Jack
            Console.WriteLine(Test("Jack", "Hi"));//传一个值，显示Jack Hi
            Console.WriteLine(Test("Jack", "Hi", "How are you?"));//传多个值，显示Jack Hi How are you?

            Console.ReadKey();
        }

        static string Test(string name, params string[] args)
        {
            string msg = name;

            for (int i = 0; i < args.Length; i++)
                msg += " " + args[i];

            return msg;
        }
    }
}