猜拳三局两胜

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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            int rcount = 0;
            int dncount = 0;
            for (int i = 0; i < 3; i++)
                {
                    Console.Write("请输入（0 || 1 || 2分别代表剪刀||锤|| 布）:");
                    int a = int.Parse(Console.ReadLine());
                    Random r = new Random();
                    int PC = r.Next(3);
                    if (a >= 0 && a < 3)
                    {
                        if (PC - a == -1 || PC - a == 2)
                        {
                            Console.WriteLine("电脑出拳{0},你出拳{1}", PC, a+"赢了");//赢了
                            rcount++;
                          
                        }
                        else if (PC == a )
                        {
                            Console.WriteLine("电脑出拳{0},你出拳{1}", PC, a);
                            i = i - 1;

                        }
                        else
                        {
                            Console.WriteLine("电脑出拳{0},你出拳{1}", PC, a+"输了");
                            dncount++;
                        }
                    }
                   
                    else
                    {
                        Console.WriteLine("请输入正确的数字！");
                        i = i - 1;
                    }
                }
            if (rcount == 2)
            {
                Console.WriteLine("三局两胜，恭喜，你赢了！");
            }
            else if (dncount == 2)
            {
                Console.WriteLine("三局两胜，你输了！");
            }

                Console.ReadLine();
        }
    }
}