http://blog.csdn.net/evilinside/article/details/5081518
八进制
http://www.cnblogs.com/bjzhanghao/archive/2005/02/05/102513.html
http://blog.csdn.net/evilinside/article/details/5081518
八进制
http://www.cnblogs.com/bjzhanghao/archive/2005/02/05/102513.html