C++的宏

http://blog.csdn.net/fox64194167/article/details/48651543
http://bbs.csdn.net/topics/340123767
http://www.cnblogs.com/dong008259/archive/2011/12/27/2302625.html
http://www.cnblogs.com/ht-927/p/4726570.html
http://www.cnblogs.com/fstang/archive/2013/01/07/2849317.html