基于C++航空订票系统的设计与实现,能够实现机票的预定，修改，航班信息的查询与检索-Based on C++ air booking system design and implementation to achieve the target air, edit, flight information query and retrieval

用VB创建四叉树，可用于点云存储和检索，对于机载雷达点云处理有很大的作用-Create a quadtree with VB, can be used for point cloud storage and retrieval, for airborne radar point cloud processing has a significant role