以链表结构的有序表表示某商场家电部的库存模型。当有提货或进货时需要对该链表及时进行维护。每次退出程序时，将该链表中的数据以文件形式保存在磁盘上，每次启动程序时，需将以文件形式保存的数据恢复成链表结构的有序表。-An order table of linked list structure shows the inventory model of a shopping mall appliance department. When the delivery or purchase the need for timely maintenance of the list. Each time the program is exited, the data in the linked list is saved on the disk in the form of a file. Each time the program is started, the data saved in the form of a file is restored to an ordered table of the linked list structure.