这是自己用GL实现的一个，模拟赛车型的小游戏 算法简单 适合初学GL 但又想做出来一定东西的人们研究 注释详细-This is the own use GL to achieve a simulated racing-type game GL algorithm is simple and suitable for beginners but people who want to do something out of a certain research notes in detail

简易二手车管理系统 可添加删除车辆、修改车辆具体信息（车型、厂家、型号、购入时间、购入价格、是否售出、售出价格）、将车辆信息保存到外部文档、从外部文档读取车辆信息-System Design Class car: includes car’s self-attributes, such as its number, logo, price.etc. Class DataStream: includes 2 methods, readData() and saveDa