using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace 占位符
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("{0},{1}", "H", "e");//占位符应用中括号，不是小括号，注意哦
Console.ReadKey();
}
}
}
占位符，休息，休息！COME ON!
