===================
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(
    #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
    CoInitiali, 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

  =====================
AXE System programmer
  =====================

  LL0:
          .seg    "data"
          .seg    "text"
          .proc 04
          .global _main
  _main:
          !#PROLOGUE# 0
          sethi   %hi(LF26),%g1
          add     %g1,%lo(LF26),%g1
          save    %sp,%g1,%sp
          !#PROLOGUE# 1
          .seg    "data1"
  L30:
          .ascii  "Hello, World\012\0"
          .seg    "text"
          .seg    "data1"
  L32:
          .ascii  "Hello, World\012\0"
          .seg    "text"
          set     L32,%o0
          call    _strlen,1
          nop
          mov     %o0,%i5
          set     L30,%o0
          call    _printf,1
          nop
          cmp     %o0,%i5
          bne     L2000000
          nop
          mov     0,%o0
          b       L2000001
          nop
  L2000000:
          mov     0x1,%o0
  L2000001:
          call    _exit,1
          nop
  LE26:
          ret
          restore
         LF26 = -96
          LP26 = 96
          LST26 = 96
          LT26 = 96
          .seg    "data"

  0000000 0103 0107 0000 0060 0000 0020 0000 0000
  0000020 0000 0030 0000 0000 0000 0054 0000 0000
  0000040 033f ffff 8200 63a0 9de3 8001 1100 0000
  0000060 9012 2000 4000 0000 0100 0000 ba10 0008
  0000100 1100 0000 9012 2000 4000 0000 0100 00 ba10 0008
  0000100 1100 0000 9012 2000 4000 0000 0100 0000
  0000120 80a2 001d 1280 0005 0100 0000 9010 2000
  0000140 1080 0003 0100 0000 9010 2001 4000 0000
  0000160 0100 0000 81c7 e008 81e8 0000 0000 0000
  0000200 4865 6c6c 6f2c 2057 6f72 6c64 0a00 4865
  0000220 6c6c 6f2c 2057 6f72 6c64 0a00 0000 0000
  0000240 0000 000c 0000 0608 0000 006e 0000 0010
  0000260 0000 060b 0000 006e 0000 0014 0000 0286
  0000300 ffff ffec 0000 0020 0000 0608 0000 0060
  0000320 0000 0024 0000 060b 0000 0060 0000 0028
  0000340 0000 0186 ffff ffd8 0000 004c 0000 0386
  0000360 ffff ffb4 0000 0004 0500 0000 0000 0000
  0000400 0000 000a 0100 0000 0000 0000 0000 0012
  0000420 0100 0000 0000 0000 0000 001a 0100 0000
  0000440 0000 0000 0000 0020 5f6d 6169 6e00 5f70
  0000460 7269 6e74 6600 5f73 7472 6c65 6e00 5f65
  0000500 7869 7400
  0000504

  % axe_generate -f system.uhdl
  Application 'Exchange' generated
  2324042350000000 source code lines
  No Errors detected.
  Hardware retrieval...done OK
  Certification Test...done OK
  Packing..............done OK
  Delivery.............done OK
  Application 'Exchange' delivered to customer
  23456000 bytes/sec.
  End processing, 2345 seconds.

  ===========================
Ultra high level programmer
  ===========================

  system.uhdl :

  SYSTEM
    CREATE ScreenWin
      SIZE 20000000/Unit=One
      DESTINATION Order.dest[One]
      OUTPUT CHARACTER['Hello world']
    END
  END

  ===========
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 all

    I need a "Hello, world." program by this afternoon.

  ===============
Chief Executive
  ===============

    % message
    message: Command not found
    % pm
    pm: Command not found
    % letter
    letter: Command not found.
    % mail
    To: ^X ^F ^C
    > help mail
    help: Command not found.
    >what
    what: Command not found
    >need help
    need: Command not found
    > damn!
    !: Event unrecognized
    >exit
    exit: Unknown
    >quit
    %
    % logout

    Bipppp ! Mrs. Thompson? Please page Tommy for me. NOW!