#include "hello.h"#ifdef HAVE_UNISTD_H#include <unistd.h>#endif#ifdef _WIN32#include <direct.h>#endifusing namespace std;intmain (int argc, char *argv[]){  CORBA::ORB_var orb = CORBA::ORB_init (argc, argv);  /*   * IOR is in hello.ref in the local directory   */  char pwd[256], uri[300];  sprintf (uri, "file://%s/hello.ref", getcwd(pwd, 256));  /*   * Bind to Hello World server   */  CORBA::Object_var obj = orb->string_to_object (uri);  HelloWorld_var hello = HelloWorld::_narrow (obj);  if (CORBA::is_nil (hello)) {    cout << "oops: could not locate HelloWorld server" << endl;    exit (1);  }  hello->hello ();  return 0;}