C#之HelloWorld,防止黑屏一闪而过

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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("hello");
            Console.ReadKey();// 按一个键继续执行
        }
    }
}