if ( OPT_Create  && !OPT_ForceCreate  && !access (OPT_BankName . c_str( ), F_OK) ) { cerr << "ERROR: Bank path already exists\n"; errflg ++; }
void ParseArgs (int argc, char ** argv){  int ch, errflg = 0;  optarg = NULL;  while ( !errflg && ((ch = getopt (argc, argv, "b:cfhm:z")) != EOF) )    switch (ch)      {      case 'b':	OPT_BankName = optarg;	break;      case 'c':	OPT_Create = true;	break;      case 'f':	OPT_Create = true;	OPT_ForceCreate = true;	break;      case 'h':	PrintHelp (argv[0]);	exit (EXIT_SUCCESS);	break;      case 'm':	OPT_MessageName = optarg;	break;      case 'z':	OPT_Compress = true;	break;      default:	errflg ++;      }  if ( OPT_BankName . empty( ) )    {      cerr << "ERROR: The -b option is mandatory\n";      errflg ++;    }  if ( OPT_MessageName . empty( ) )    {      cerr << "ERROR: The -m option is mandatory\n";      errflg ++;    }  if ( !OPT_Create  &&  access (OPT_BankName . c_str( ), R_OK|W_OK|X_OK) )    {      cerr << "ERROR: Bank directory is not accessible\n";      errflg ++;    }  if ( errflg > 0 || argc != optind )    {      PrintUsage (argv[0]);      cerr << "Try '" << argv[0] << " -h' for more information.\n";      exit (EXIT_FAILURE);    }}