https://blog.youkuaiyun.com/chen_vampirezh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/chen_vampire/article/details/12759221https://blog.youkuaiyun.com/chen_vampire/article/details/12759221chen_vampireTue, 15 Oct 2013 23:09:42 +0800https://blog.youkuaiyun.com/chen_vampire/article/details/12361319https://blog.youkuaiyun.com/chen_vampire/article/details/12361319chen_vampireSun, 06 Oct 2013 23:25:32 +0800https://blog.youkuaiyun.com/chen_vampire/article/details/11919425https://blog.youkuaiyun.com/chen_vampire/article/details/11919425chen_vampireMon, 23 Sep 2013 09:30:53 +0800https://blog.youkuaiyun.com/chen_vampire/article/details/10442407https://blog.youkuaiyun.com/chen_vampire/article/details/10442407chen_vampireWed, 28 Aug 2013 14:17:39 +0800大  自动提升为较大的数据类型 2.大->小 必须类型转换，指定数据的具体类型，不然编译不通过 3.返回值过载不提倡，无法区分调用的是什么方法]]>