hello C#

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

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.Write("请输入：");
            string sText = "欢迎你："+Console.ReadLine();
            Console.Write(sText);
            Console.ReadLine();

        }
    }
}