该程序实现了道路中桩放样，考虑了断链和前后缓和曲线不同的情况，统一由链表管理，实现了中桩的插入、删除、查询等功能。该程序已经用到实际工作中，效果较好。-The way the program implementation of pile setting out, consider the chain before and after the transition curve and the different situations, unified chain management, the implementation of the Medium Pile insert, delete, query and other functions. The procedures have been used in the actual work, better.