#include <WinSock2.h>  #include <iostream>  using namespace std;  #pragma comment(lib, "ws2_32.lib");    int main()  {   WSADATA wsaData;   WORD sockVersion = MAKEWORD(2, 2);   ::WSAStartup(sockVersion, &wsaData);     char lv_name[50];   gethostname(lv_name, 50);   hostent * lv_pHostent;   lv_pHostent = (hostent *)malloc(sizeof(hostent));   if( NULL == (lv_pHostent = gethostbyname(lv_name)))   {    printf("get Hosrname Fail \n");    return 0;   }   SOCKADDR_IN lv_sa;   lv_sa.sin_family = AF_INET;   lv_sa.sin_port = htons(6000);   memcpy(&lv_sa.sin_addr.S_un.S_addr, lv_pHostent->h_addr_list[0], lv_pHostent->h_length);   printf("%s\n", inet_ntoa(lv_sa.sin_addr));     return 0;  }