The Evolution of a Programmer

[Lazybones]

http://www.icarus.net/johnjo/evolutio.htm

Code Select Expand


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



[Mr. Analog]

MISSING LINK FOUND!





I found the missing link between our programmtic ancestors the FORTRAN. Gentlemen, I present to you COBOL Hello World! (now does anyone know enough JCL to get this bad boy queued?)

Code Select Expand

000100 IDENTIFICATION DIVISION.

000200 PROGRAM-ID.     HELLOWORLD.

000300

000400*

000500 ENVIRONMENT DIVISION.

000600 CONFIGURATION SECTION.

000700 SOURCE-COMPUTER. RM-COBOL.

000800 OBJECT-COMPUTER. RM-COBOL.

000900

001000 DATA DIVISION.

001100 FILE SECTION.

001200

100000 PROCEDURE DIVISION.

100100

100200 MAIN-LOGIC SECTION.

100300 BEGIN.

100400     DISPLAY " " LINE 1 POSITION 1 ERASE EOS.

100500     DISPLAY "Hello world!" LINE 15 POSITION 10.

100600     STOP RUN.

100700 MAIN-LOGIC-EXIT.

100800     EXIT.