文件名称:blog
介绍说明－－下载内容均来自于网络，请自行研究使用
blog类，博主可发表或者删除，修改博客，游客可以浏览博客。-A class called blog.The owner can build or
delete a blog. The visitors can look through all blogs.
delete a blog. The visitors can look through all blogs.
(系统自动生成,下载前可以参看下载内容)
下载文件列表
blog.cpp