通讯录管理程序

目 标：编写程序，建立一个通讯录，存放有姓名、电话号码、住址等，具备输入、查找、添加、修改及删除等功能。

要 求：具备菜单功能或详细的提示功能，至少具备数据输入、输出、查询、删除、文件保存、文件读入中的两项功能。能力强的同学可以设计表格化输出。熟练掌握文件或结构体的操作，程序中至少要有一个自定义结构体。总程序量不少于100行，输出数据要进行适当美化。程序要有详细的注释及必要的说明文档 -Contact management program goals: write a program, create a directory for storing the names, phone numbers, addresses, etc., have input, search, add, modify and delete functions. Requirements: with the menu functions or detailed prompt function, at least the data input, output, query, delete, save the file, the file read into the two functions. Ability of students to design a form of output. Master file or structure of the operation, the program must be at least a custom structure. The total program amount of not less than 100 lines, the output data to appropriate landscaping. Procedures should be detailed notes and documentation necessary