[C++]访问控制与继承(public,protect,private) 有时间再整理！！！

http://www.cnblogs.com/chio/archive/2007/06/11/779408.html

http://www.cnblogs.com/SelaSelah/archive/2012/08/12/2634256.html

http://www.cnblogs.com/BeyondAnyTime/archive/2012/05/23/2514964.html

http://bbs.csdn.net/topics/380193036

http://www.cnblogs.com/qlee/archive/2011/07/04/2097251.html