说明：  这个ping程序的源代码经过我的修改和调试,基本上可以取代windows中自带的ping程序. 各个模块后都有我的详细注释和修改日志,希望能够对大家的学习有所帮助!
(After I modify and debug the source code of the ping program can basically replace the windows ping program that comes with each module after my detailed notes and change log, hoping to be helpful to learn from everyone!)