THE OFFICIAL FRIDAY SILLINESS THREAD

Blatherskites, mark this day on your calendar. For today is Babbling Day. This isn't a day to remain silent. Tell everyone you know about this special day.

Once upon a time in their marriage, my Dad did something

really stupid. My Mom chewed him out for it. He apologized,

they made up.

However, from time to time, my mom mentions what he had

done. “Honey,” my Dad finally said one day, “why do you

keep bringing that up? I thought your policy was ‘forgive

and forget.’”

“It is,” she said. “I just don’t want you to forget that

I’ve forgiven and forgotten.”

{NOTE: For the non programmers, some exegesis may
be necessary:  when a programmer starts to learn a new language,
a typical first exercise is to program the computer to display the 
message "Hello World".}

---------------


	     A compilation of *Hello World programs* designed by
		    various categories of  *developer* follows.


    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 <stdio.h>
    void main(void)
    {
      char *message[] = {"Hello ", "World"};
      int i;

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

    Seasoned professional
    =====================
    #include <iostream.h>
    #include <string.h>

    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(<windows.h>);
	importheader(<ole2.h>);
	importheader(<except.hxx>);
	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 <windows.h>

    #include <ole2.h>
    #include <stdio.h>
    #include <stdlib.h>
    #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 <windows.h>
    #include <ole2.h>

    #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 <windows.h>
    #include <ole2.h>
    #include <stdlib.h>
    #include <string.h>

    #include <stdio.h>
    #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 <stdio.h>
    #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

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