宏观作用总结
https://www.cnblogs.com/biyeymyhjob/archive/2012/07/19/2598815.html
微观讲解
https://www.cnblogs.com/beyondanytime/archive/2012/06/08/2542315.html
C\C++中static关键字作用总结
原文：https://www.cnblogs.com/littleswan/p/12586171.html
