实现了圆拟合的功能，效果比较好，可以下来试一下。有问题联系我...

该算法应于求解QOP问题，本人对此不是很精通，希望有机会和大家一起讨论这个问题。-the algorithm should be solved QOP issue, I am not very proficient, and hope we have the opportunity to discuss this issue.

prg4_1.c : TCP服务器。该程序等待客户的连接，一旦连接，则显示客户IP地址，并发信息回客户。-prg4_1.c : TCP server. The procedure for connecting customers, once connected, it shows that the client IP address, with the information back to customers.

backup data with ndmpcoy tool that is implemented by RPC

另一个IOCP的代码所有封装好的VC原代码 有一定的学习研究作用 大家可以下载来-Another IOCP code all good VC source code package has a certain degree of study and research the role of U.S. can be downloaded to

一个基于sip的通信源代码，很详细的文档说明，值得参考和学习-A sip of communication based on source code, the document explains in great detail, it is also useful and learning

用MFC编写的聊天程序，实现聊天室功能，客户端能够自动检测到服务器。-MFC prepared using chat programs, chat rooms realize functions, can automatically detect the client to the server.

MulticastChat:一个多播的聊天程序，运行多个实例，然后加入同一个组即可聊天。-MulticastChat : a multicast chat, the running of a number of examples, then joined a group can chat.

vnc最新版代码改进，相当有学习价值-vnc the latest version of the code improvements, the value of a considerable learning. . . . . .

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模块批量下载工具（易语言源码）-Module bulk download tool (easy language source)