The Evolution of a Programmer

I am just checking my pst. It still brings a few smiles.

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);
        }
       
Apprentice Hacker
        #!/usr/local/bin/perl
        $msg="Hello, world.\n";
        if ($#ARGV >= 0) {
          while(defined($arg=shift(@ARGV))) {
            $outfilename = $arg;
            open(FILE, ">" . $outfilename) || die "Can't write $arg: $!\n";
            print (FILE $msg);
            close(FILE) || die "Can't close $arg: $!\n";
          }
        } else {
          print ($msg);
        }
        1;
       
Experienced Hacker
        #include 
        #define S "Hello, World\n"
        main(){exit(printf(S) == strlen(S) ? 0 : 1);}
       
Seasoned Hacker
        % cc -o a.out ~/src/misc/hw/hw.c
        % a.out
      
Guru Hacker
        % cat
        Hello, world.
        ^D
       
New Manager
        10 PRINT "HELLO WORLD"
        20 END
       
Middle Manager
        mail -s "Hello, world." bob@b12
        Bob, could you please write me a program that prints "Hello, world."?
        I need it by tomorrow.
        ^D
       
Senior Manager
        % zmail jim
        I need a "Hello, world." program by this afternoon.
       
Chief Executive
        % letter
        letter: Command not found.
        % mail
        To: ^X ^F ^C
        % help mail
        help: Command not found.
        % damn!
        !: Event unrecognized
        % logout 

:-)