用c语言实现的pop3程序，老师上课的范例，对编程技巧很有帮助，写得很经典！-Pop3 using c language of the program, an example of class the teacher, very helpful on the programming skills to write a very classic!

本程序实现对主机电子邮件协议的监控与截获。如利用foxmail和outlook发送的电子邮件。Socket编程，base64码变换。-The program realization of the host monitor and intercept e-mail protocol. Such as the use foxmail and outlook email. Socket programming, base64 code transformation.