Evolution of a Programmer:

High School/Jr.High 

       10 PRINT "HELLO WORLD"
       20 END

First year in College 

       program Hello(input, output)
         begin
           writeln('Hello World')
         end.

Senior year in College 

       (defun hello
         (print
           (cons 'Hello (list 'World))))

New professional 

       #include 
       void main(void)
       {
         char *message[] = {"Hello ", "World"};
         int i;

         for(i = 0; i < 2; ++i)
           printf("%s", message[i]);
         printf("\n");
       }

Seasoned professional 

       #include 
       #include 

       class string
       {
       private:
         int size;
         char *ptr;

       public:
         string() : size(0), ptr(new char('\0')) {}

         string(const string &s) : size(s.size)
         {
           ptr = new char[size + 1];
           strcpy(ptr, s.ptr);
         }

         ~string()
         {
           delete [] ptr;
         }

         friend ostream &operator <<(ostream &, const string &);
         string &operator=(const char *);
       };

       ostream &operator<<(ostream &stream, const string &s)
       {
         return(stream << s.ptr);
       }

       string &string::operator=(const char *chrs)
       {
         if (this != &chrs)
         {
           delete [] ptr;
           size = strlen(chrs);
           ptr = new char[size + 1];
           strcpy(ptr, chrs);
         }
         return(*this);
       }

       int main()
       {
         string str;

         str = "Hello World";
         cout << str << endl;

         return(0);
       }

Master Programmer 

       [
       uuid(2573F8F4-CFEE-101A-9A9F-00AA00342820)
       ]
       library LHello
       {
           // bring in the master library
           importlib("actimp.tlb");
           importlib("actexp.tlb");

           // bring in my interfaces
           #include "pshlo.idl"

           [
           uuid(2573F8F5-CFEE-101A-9A9F-00AA00342820)
           ]
           cotype THello
               {
               interface IHello;
               interface IPersistFile;
               };
       };

       [
       exe,
       uuid(2573F890-CFEE-101A-9A9F-00AA00342820)
       ]
       module CHelloLib
       {

           // some code related header files
           importheader();
           importheader();
           importheader();
           importheader("pshlo.h");
           importheader("shlo.hxx");
           importheader("mycls.hxx");

           // needed typelibs
           importlib("actimp.tlb");
           importlib("actexp.tlb");
           importlib("thlo.tlb");

           [
           uuid(2573F891-CFEE-101A-9A9F-00AA00342820),
           aggregatable
           ]
           coclass CHello
               {
               cotype THello;
               };
       };


       #include "ipfix.hxx"

       extern HANDLE hEvent;

       class CHello : public CHelloBase
       {
       public:
           IPFIX(CLSID_CHello);

           CHello(IUnknown *pUnk);
           ~CHello();

           HRESULT  __stdcall  PrintSz(LPWSTR pwszString);

       private:
           static int cObjRef;
       };


       #include 
       #include 
       #include 
       #include 
       #include "thlo.h"
       #include "pshlo.h"
       #include "shlo.hxx"
       #include "mycls.hxx"

       int CHello::cObjRef = 0;

       CHello::CHello(IUnknown *pUnk) : CHelloBase(pUnk)
       {
           cObjRef++;
           return;
       }

       HRESULT  __stdcall  CHello::PrintSz(LPWSTR pwszString)
       {
           printf("%ws\n", pwszString);
           return(ResultFromScode(S_OK));
       }


       CHello::~CHello(void)
       {

       // when the object count goes to zero, stop the server
       cObjRef--;
       if( cObjRef == 0 )
           PulseEvent(hEvent);

       return;
       }

       #include 
       #include 
       #include "pshlo.h"
       #include "shlo.hxx"
       #include "mycls.hxx"

       HANDLE hEvent;

        int _cdecl main(
       int argc,
       char * argv[]
       ) {
       ULONG ulRef;
       DWORD dwRegistration;
       CHelloCF *pCF = new CHelloCF();

       hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);

       // Initialize the OLE libraries
       CoInitializeEx(NULL, COINIT_MULTITHREADED);

       CoRegisterClassObject(CLSID_CHello, pCF, CLSCTX_LOCAL_SERVER,
                         REGCLS_MULTIPLEUSE, &dwRegistration);

       // wait on an event to stop
       WaitForSingleObject(hEvent, INFINITE);

       //      revoke and release the class object
       CoRevokeClassObject(dwRegistration);
       ulRef = pCF->Release();

       // Tell OLE we are going away.
       CoUninitialize();

       return(0);
       }

       extern CLSID CLSID_CHello;
       extern UUID LIBID_CHelloLib;

       CLSID CLSID_CHello = { /* 2573F891-CFEE-101A-9A9F-00AA00342820 */
           0x2573F891,
           0xCFEE,
           0x101A,
           { 0x9A, 0x9F, 0x00, 0xAA, 0x00, 0x34, 0x28, 0x20 }
       };

       UUID LIBID_CHelloLib = { /* 2573F890-CFEE-101A-9A9F-00AA00342820 */
           0x2573F890,
           0xCFEE,
           0x101A,
           { 0x9A, 0x9F, 0x00, 0xAA, 0x00, 0x34, 0x28, 0x20 }
       };

       #include 
       #include 
       #include 
       #include 
       #include 
       #include "pshlo.h"
       #include "shlo.hxx"
       #include "clsid.h"

       int _cdecl main(
       int argc,
       char * argv[]
       ) {
       HRESULT         hRslt;
       IHello         *pHello;
       ULONG           ulCnt;
       IMoniker *      pmk;
       WCHAR           wcsT[_MAX_PATH];
       WCHAR           wcsPath[2 * _MAX_PATH];

       // get object path
       wcsPath[0] = '\0';
       wcsT[0] = '\0';
       if( argc > 1) {
           mbstowcs(wcsPath, argv[1], strlen(argv[1]) + 1);
           wcsupr(wcsPath);
           }
       else {
           fprintf(stderr, "Object path must be specified\n");
           return(1);
           }

       // get print string
       if(argc > 2)
           mbstowcs(wcsT, argv[2], strlen(argv[2]) + 1);
       else
           wcscpy(wcsT, L"Hello World");

       printf("Linking to object %ws\n", wcsPath);
       printf("Text String %ws\n", wcsT);

       // Initialize the OLE libraries
       hRslt = CoInitializeEx(NULL, COINIT_MULTITHREADED);

       if(SUCCEEDED(hRslt)) {


           hRslt = CreateFileMoniker(wcsPath, &pmk);
           if(SUCCEEDED(hRslt))
               hRslt = BindMoniker(pmk, 0, IID_IHello, (void **)&pHello);

           if(SUCCEEDED(hRslt)) {

               // print a string out
               pHello->PrintSz(wcsT);

               Sleep(2000);
               ulCnt = pHello->Release();
               }
           else
               printf("Failure to connect, status: %lx", hRslt);

           // Tell OLE we are going away.
           CoUninitialize();
           }

       return(0);
       }