컴퓨터의 모든 IP 주소 가져오기

char szHostName[128];

 if( gethostname(szHostName, 128) == 0 )
 {
  // Get host adresses
  struct hostent * pHost;
  int i;

  pHost = gethostbyname(szHostName);

  for( i = 0; pHost!= NULL && pHost->h_addr_list[i]!= NULL; i++ )
  {
   CString str;
   int j;

   for( j = 0; j < pHost->h_length; j++ )
   {
    CString addr;

    if( j > 0 )
     str += ".";

    addr.Format("%u", (unsigned int)((unsigned
     char*)pHost->h_addr_list[i])[j]);
    str += addr;
   }
   // str now contains one local IP address - do whatever you want to do with it (probably add it to a list)
   TRACE(str+"\n");
  }
 }