我只是收藏一下而已

#include "winsock2.h"
#pragma comment( lib, "ws2_32" )
const char* get_first_ip(void)
{
  char szHostName[128];
  const char* pszAddr = NULL;
  struct hostent * pHost;
  int i;
  WSADATA wsaData;
  WSAStartup(0x202, &wsaData );
  if( gethostname(szHostName, 128) == 0 )
  {
    pHost = gethostbyname(szHostName);
    for( i = 0; pHost!= NULL && pHost->h_addr_list[i]!= NULL; i++ )    
    {/*对每一个IP地址进行处理*/
       pszAddr = inet_ntoa (*(struct in_addr *)pHost->h_addr_list[i]);
    break;
    }
  }
  WSACleanup();
  return pszAddr;
}