https://blog.youkuaiyun.com/liqi1120902471zh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/liqi1120902471/article/details/74983452https://blog.youkuaiyun.com/liqi1120902471/article/details/74983452liqi1120902471Tue, 11 Jul 2017 16:24:47 +0800派生类（或称为子类） 3. 定义 2. struct 3. class与struct区别]]>