随机数Random

using System;

namespace 随机数
{
    class Program
    {
        static void Main(string[] args)
        {
            Random r = new Random();
            while(true)
            {
                int rNumber = r.Next(1, 5);
                Console.WriteLine("请输入你的名字");

                string  result = Console .ReadLine ();
                switch (rNumber )
                {
                    case 1:Console.WriteLine("你上辈子是坨翔");
                            break;
                    case 2:Console.WriteLine("你上辈子是个垃圾");
                        break;
                    case 3:Console.WriteLine("你上辈子是个救苦救难的观世音菩萨");
                        break;
                    case 4:Console.WriteLine("你上辈子是个帅哥");
                        break;
                }
                
            }
            
        }
    }
}

产生随机数