以一个小型同学通讯录为背景采用系统调用C语言编制一个具有文件的创建、打开、读取、写入等功能的程序。-students in a small address book for background use system calls C language of a document is created, opened, read, write functions procedures.

用C#做的一个通讯录，有添加，删除等常用功能-Useing c# do an address book, have add, delete etc common functions