最简单的TCP客户端（winapi）

#include <stdio.h>#pragma comment(lib, "ws2_32.lib")#include <Winsock2.h>void main(){WSADATA wsaData;WSAStartup(MAKEWORD( 2, 2) , &wsaData );SOCKET sockClient=socket(AF_INET,SOCK_STREAM,0);SOCKADDR_IN addrSrv;addrSrv.sin_addr.S_un.S_addr=inet_addr("127.0.0.1");addrSrv.sin_family=AF_INET;addrSrv.sin_port=htons(9998);connect(sockClient,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));send(sockClient,"This!",6000,0);closesocket(sockClient);WSACleanup();}