我们程序设计课上要求写的b+树的c++实现，可以进行插入查找删除等操作，代码简单，适合新手-We design classes require written b+ Tree c++ Achieve, can be inserted to find the deletion of such operations, the code is simple, suitable for novice

B树底层实现，c++代码，参考数据结构与算法（c++版）(Implementation of B tree bottom)