编写自己的一个ping程序,可以说是许多人迈出网络编程的第一步吧!!这个ping程序的源代码经过修改和调试,基本上可以取代windows中自带的ping程序.-preparation of a ping own procedures, It can be said is that many people take the first step to network programming! ! The ping program' s source code has been modifie