基于C语言设计的火车售票系统，采用通用链表等，单向，实现火车购票退票余票查询等功能-C-based language designed to train ticketing system, to adopt a common list and so on, one-way, to achieve more than a train ticket refund ticket inquiries and other functions

单向链表算法实现,用于通信中链表元素的遍历、添加、删除。-One-way linked list to achieve the source file