int b = 0;
            for (int i = 0; b != 5; i++)
            {
                // 计算机出拳
                int a, c = 0, d = 0, e = 0;
                Random r = new Random();
                a = r.Next(1, 3);
                Console.WriteLine("请出拳：其中1代表拳头；2代表剪刀；3代表布");
                b = Convert.ToInt32(Console.Read());

                Console.WriteLine("你出拳为{1}  +  计算机为{2}", b, a);
                if (a == b)
                {
                    Console.WriteLine(" 平局  ");
                    c = c + 1;
                }
                else if ((a == 1 && b == 2) || (a == 2 && b == 3) || (a == 3 && b == 1))
                {
                    Console.WriteLine("你输了");
                    d = d + 1;
                }
                else
                {
                    Console.WriteLine("你赢了");
                    e = e + 1;
                }
                Console.WriteLine("不玩时请输入5");
                b = Convert.ToInt32(Console.ReadLine());
                if (b == 5)
                {
                    int f = c + d + e;
                    Console.WriteLine("共玩{0}  为胜局为{1}   平局为{2}   负局为{3}", f, e, c, d);
                }
            }

谢谢
谢谢各位！！！！