code

代码说明：

说明：  用C++实现了一个飞机大战的游戏，游戏中有敌方飞机，用C++类来实现，地方飞机有大中小飞机，用C++的继承来是实现，是个不错的C++基础项目(A game of aircraft war is realized with C++. There are enemy planes in the game, which are implemented with C++ classes. Local planes have large, medium and small planes. It is a good basic project of C++ that is realized with the inheritance of C++)