09.17,二维数组，地图

  string[,] erwei = new string[10, 10] 
            {
                { "■","■","■","■","■","■","■","■","■","■"}, 
                { "■","  ","  ","  ","  ","  ","■","  ","  ","■"}, 
                { "■","  ","■","■","■","  ","■","■","  ","■"},
                { "■","  ","■","  ","■","  ","  ","■","  ","■"},
                { "■","  ","■","  ","■","■","  ","■","  ","■"},
                { "■","  ","■","  ","  ","■","■","■","  ","■"},
                { "■","  ","■","  ","  ","  ","  ","  ","  ","■"},
                { "■","  ","  ","  ","■","■","■","  ","■","■"},
                { "■","  ","■","  ","  ","■","  ","  ","  ","■"},
                { "■","■","■","■","■","■","■","■","■","■" } 
            };

            int reny = 4;
            int renx = 6;
            erwei[reny, renx] = "人";

            while (true)
            {
               
                for (int j = 0; j < 10; j++)
                {
                    for (int i = 0; i < 10; i++)
                    {
                        Console.Write(erwei[j, i]);
                    }
                    Console.Write("
");
                }

                erwei[reny, renx] = "  ";
                Console.Write("请按wasd来运动:");
                string caozuo = Console.ReadLine();
                if (caozuo == "w")
                {
                    if (erwei[reny - 1, renx] == "  ")
                    {
                        reny = reny - 1;
                    }
                }
                if (caozuo == "a")
                {
                    if (erwei[reny, renx - 1] == "  ")
                    {
                        renx = renx - 1;
                    }
                }
                if (caozuo == "s")
                {
                    if (erwei[reny + 1, renx] == "  ")
                    {
                        reny = reny + 1;
                    }
                }
                if (caozuo == "d")
                {
                    if (erwei[reny, renx + 1] == "  ")
                    {
                        renx = renx + 1;
                    }
                }

                erwei[reny, renx] = "人";
                Console.Clear();
            }
            Console.ReadLine();