c# 中 Random 的使用。

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

namespace ConsoleApplication1
{
    class Program
    {
        Random random = new Random();
        public string gameStatus;
        public int gamePoint;
        public int count = 2;
        static void Main(string[] args)
        {
            new Program().StartGame();
            Console.ReadKey();
        }

        #region play a game
        public void StartGame() 
        {
            int number = GenerateNumber();
            Console.WriteLine("the first number is "+number);
            switch(number)
            {
                case 7:
                case 11:
                    gameStatus = "win";
                    Console.WriteLine("you win the game");
                    break;
                case 2:
                case 3:
                case 12:
                    gameStatus = "win";
                    Console.WriteLine("you lose the game");
                    break;
                default:
                    gameStatus = "continues";
                    gamePoint = number;
                    break;
            }

            while (gameStatus.Equals("continues"))
            {
                int num = GenerateNumber();
                Console.WriteLine("the "+count+"th number is "+ num);
                if (count == gamePoint)
                {
                    Console.WriteLine("you lose the game");
                    break;
                }
                if (num == gamePoint)
                {
                    gameStatus = "win";
                    Console.WriteLine("you win the game");
                    break;
                }
                count++;
            }
            Console.ReadKey();
        }

        public int GenerateNumber() 
        {
            int randomNumber1 = random.Next(1, 7);
            int randomNumber2 = random.Next(1, 7);
            return randomNumber1 + randomNumber2;
        }
        #endregion
    }
}