C++ tcp_client

代码说明：

#include #include void main() { WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD( 2, 2 ); err = WSAStartup( wVersionRequested, &wsaData ); if ( err != 0 ) { /* Tell the user that we could not find a usable */ /* WinSock DLL.                                  */ return; } /* Confirm that the WinSock DLL supports 2.2.*/ /* Note that if the DLL supports versions greater    */ /* than 2.2 in addition to 2.2, it will still return */ /* 2.2 in wVersion since that is the version we      */ /* requested.                                        */ if ( LOBYTE(