这个程序的功能是实现顺序队列，包括插入，删除，查找，清空，销毁。虽然顺序队列用的不多，但是初学者应该要掌握。-The function of this program is to achieve the order queue, including insert, delete, find, clear, destroy. Although the order of the queue is not used much, but beginners should grasp.