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• Text files: pp1_16.cpp
• Code Setup and Compilation

//***************************************************************************************************************
// Program Phase 1-16 C++ wxWidgets Hello World! with Strings
// Programming Tasks Illustrated: Console Application
//                                Integer and String Variable Declarations
//                                Application Command Line Parameters
//                                Case/Switch Statement
//                                String Literal Assignment and Concatenation
//                                Console Application Standard Output
//***************************************************************************************************************

//***************************************************************************************************************
// File: pp1_16.cpp
// Reserved
//***************************************************************************************************************

#include <stdio.h>
#include "wx/wx.h"


//***************************************************************************************************************
// Program Phase 1-16 Main
// Define the Entry Point of Execution (EPE) for Program Phase 1-16
// CBI:  1-16.1.1.1
//***************************************************************************************************************

int main(int argc, char* argv[])
{
   if (wxInitialize() == false)
   {
      wxFprintf(stderr,wxT("Failed to initialize wxWidgets.\n"));
      return 1;
   }

//***************************************************************************************************************
// Program Phase 1-16 Main
// Declare the local variables for the "main" program
// CBI:  1-16.1.1.2
//***************************************************************************************************************

   int lnCmdLineParamCount;
   wxString lcString1;
   wxString lcString2;
   wxString lcStringOutput1;
   wxString lcStringOutput2;

//***************************************************************************************************************
// Program Phase 1-16 Main
// Store the command line parameters
// CBI:  1-16.1.1.3
//***************************************************************************************************************

   lnCmdLineParamCount = argc - 1;

//***************************************************************************************************************
// Program Phase 1-16 Main
// Parse the command line parameters using a Case/Switch statement
// CBI:  1-16.1.1.4
//***************************************************************************************************************

   switch(lnCmdLineParamCount)
   {
      case 0:
        lcStringOutput1.Printf(wxT("You entered no command line parameters."));
        break;

      case 1:
         lcStringOutput1.Printf(wxT("Command line parameter entered:  %s"),
                                    wxT(argv[1]));
         break;

      default:

     lcStringOutput1.Printf(wxT("The command line is limted to 1 parameter."));
   }

//***************************************************************************************************************
// Program Phase 1-16 Main
// Concatenate two string variables
// CBI:  1-16.1.1.5
//***************************************************************************************************************

   lcString1.Printf(wxT("Hello"));
   lcString2.Printf(wxT("World!"));
   lcStringOutput2 << lcString1 << wxT(" ") << lcString2;

//***************************************************************************************************************
// Program Phase 1-16 Main
// Output to standard output
// CBI:  1-16.1.1.6
//***************************************************************************************************************

   wxFprintf(stdout,wxT("%s\n"),lcStringOutput1.c_str());
   wxFprintf(stdout,wxT("%s\n"),lcStringOutput2.c_str());
   wxUninitialize();

   return 0;
}