进入turbo c运行游戏，按上下左右键控制,任何时候按ESC键退出，一个函数用来划方块；一个用来划小方块；一个用来擦去小方块-Turbo c run into the Games, according to key vertical and horizontal control, at any time by the ESC key to exit, a function used to draw box　a small box used to draw　a small box to remove