Can`t really understand what the parameters for constructing tcp::resolver::query

Hi everybody, I am starting Boost.Asio and trying to make examples given on official website work.
here`s client code:

using boost::asio::ip::tcp;

int _tmain(int argc, _TCHAR* argv[])
{
    try {
     boost::asio::io_service io_service;

     tcp::resolver resolver(io_service);
     tcp::resolver::query query(argv[1], "daytime");
     tcp::resolver::iterator endpoint_iterator = resolver.resolve(query);
     tcp::resolver::iterator end;

     tcp::socket socket(io_service);
     boost::system::error_code error = boost::asio::error::host_not_found;
     while(error && endpoint_iterator != end) {
      socket.close();
      socket.connect(*endpoint_iterator++, error);
     }
     if (error)
      throw boost::system::system_error(error);

     for(;;) {
      boost::array buf;
      boost::system::error_code error;

      std::size_t len = socket.read_some(boost::asio::buffer(buf), error);

      if (error == boost::asio::error::eof)
       break; //connection closed cleanly by peer
      else if (error)
       throw boost::system::system_error(error);

      std::cout.write(buf.data(), len);
     }
    }
    catch(std::exception& e) {
     //...
    }
    return 0;
}

The question is - I can not find out what the parameters would be to run program from command prompt?

From stackoverflow

• If I not mistake, you are trying to use UNICODE string -- tchar. Use standard

  int main(int argc,char **argv)
  

• You would run the program with the IP or Hostname of the server you want to connect to. tcp::resolver::query takes the host to resolve or the IP as the first parameter and the name of the service (as defined e.g. in /etc/services on Unix hosts) - you can also use a numeric service identifier (aka port number). It returns a list of possible endpoints, as there might be several entries for a single host.

  chester89 : tcp::resolver::query query("localhost", "daytime"); //it works //I wanted to test the example on localhost