说明：  《指针经验总结》：C++中最难理解的就是关于对指针的理解运用，本书中详细的介绍关于指针的各个知识点，尤其是对指针一知半解的
( Lessons Learned pointer : C++ In the hardest to understand is the pointer on the understanding of the use of the book detailed introduction on the various indicators of knowledge points, especially for the lack of indicators)