C大程，坦克大战 全局变量用太多了，尽管能简化代码，但坏处更多。 稍微玩了一下，发现还是有些bug，鲁棒性方面没花太多功夫，有时方向失灵 总得来讲还是过关的 -C big way, Tankedaizhan with too many global variables, even though to simplify the code, but more harm. Play a little, then found a few bug, robustness aspects n