说明：  描述：链表队列示范程序，用于练习并理解链表队列的基本原理和实现方法。 功能：实现了带头节点的链表队列创建、插入、删除、遍历、判断为空、以及销毁等功能。 设置了调试参数输出功能，可用于跟踪各主要变量单步变化情况。 实现了一个自定义命令行SHELL，接收解释并执行各种操作命令。
(Description: list queue model procedures for practice and understand the basic principles of the queue list and realization method. Functions: to achieve a leading node in the queue list to create, insert, delete, traverse, judge for the space, as well as the destruction of other functions. Set debug parameters output function can be used to track the major changes in single-step variables. Realize a custom command-line SHELL, receive an explanation and implementation of the operation command.)