客户帐单管理是电信计费系统必备的重要功能模块，主要负责对电信各类客户每月帐单的增加、修改、删除、查询、备份等管理工作。本课题以中国电信企业客户帐单管理模块原型参照，要求基于单链表结构对文件存储的客户帐单数据进行排序、查找、计算、显示等造作。通过此可以，熟练掌握单链表结构、文件读写、函数调用等知识，以及查找、排序典型算法的设计与应用。-Customer Billing Telecom Billing System management is an important function modules necessary, is responsible for telecommunications to increase the monthly bills of all types of customers, modify, delete, query, backup management. The topics to corporate customers of China Telecom Billing Management module prototype reference requirements are based on single-chain structure of the customer billing data file storage to sort, find, calculate and display pretentious. With this you can, master a single linked list, file read and write, function calls and other knowledge, as well as find, sort of typical design and application of the algorithm.