tinyxml库以及介绍使用tinyxml库获取xml文件声明，查询指定节点、删除指定节点、修改指定节点和增加节点的用法。具体说明见我的博客： http://blog.csdn.net/clever101/archive/2010/02/28/5334369.aspx-tinyxml library and introduced the use of tinyxml library xml file to obtain the statement, query the specified n