自己编的华容道游戏。对用户的上、下、左、右命令进行识别，并提供相应的备选子，在用户输入确认命令后，完成棋子的移动。显示，welcome和所用步数。-Huarong own game series. To users, down, left and right commands to identify and provide appropriate alternative child, in the confirmation order entered by the user after the