모니터 화면에 Hello World를 찍기 위한 프로그램입니다.

중고등학생 (High School/Jr.High)
================================

10 PRINT HELLO WORLD
20 END

아주 간단하지요 ^^;

대학 신입생 (First year in College)
===================================

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


대학 졸업반 (Senior year in College)
====================================

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


신입 사원 (New professional)
============================

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

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


숙련된 사원 (Seasoned professional)
===================================


#include
#include

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

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

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)
{
rettream << 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);
}

슬슬...쓸데없이 복잡해 지기 시작 -_-;;

마스터 프로그래머 (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
importheade
r();
importheader();
importheader();
importheader(pshlo.h);
importheader(shlo.hxx);
importheader(mycls.hxx);

// needed typelibs
importlibctimp.tlb);
importlib(actexp.tlb);
importlib(thlo.tlb);

[
uuid(2573F891-CFEE-101A-9A9F-00AA00342820),>

#include ipfix.hxx

extern HANDLE hEvent;

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

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

HRESULT __stdcall PrintSz(LPWSTR pwszString);

aggregatable
]

coclass CHello
{
cotype THello;
};
};
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
, 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 ipfix.hxx

extern HANDLE hEvent;

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

CHello(IUnknown *pUnk);
~CHello();
HRESULT __stdcall PrintSz(LPWSTR pwszString);

aggregatable
]
coclass CHello
{
cotype THello;
};
};
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
, 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
nclude pshlo.h

#include shlo.hxx
#include mycls.hxx
HANDLE hEvent;

int _cdecl
n(
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,
nclude
#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] = ‘’;
wcsT[0] = ‘’;
if( argc > 1) {
mbstowcs(wcsPath, argv[1], strlen(argv[1]) + 1);
wcsupr(wcsPath);
}
else {
fprintf(stderr, Object path must be specified
);
return(1);
}

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

printf(Linking to object %ws
, wcsPath);
printf(Text String %ws
, 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

CEEDED(hRslt)) {

// print a string out
pHello->Print
Sz(wcsT);
Sleep(2000);
ulCnt = pHello->Release();
}
else
printf(Failure to connect, status: %lx, hRslt);

// Tell OLE we are going away.
CoUninitialize();
}
return(0);
}


초보 해커 (Apprentice Hacker)
=============================

#!/usr/local/bin/perl
$msg=Hello, world.
;
if ($#ARGV >= 0)

while(defined($arg=shift(@ARGV)))

$outfilename = $arg;
open(FILE, > . $outfilename) || die Can’t write $arg: $!
;
print (FILE $msg);
close(FILE)die Can’t close $arg: $!
;
}
} else

print ($msg);
}
1;


경력 해커 (Experienced Hacker)
==============================

#include
#define S Hello, World

main(){exit(printf(S) == strlen(S) ? 0 : 1);}


숙련된 해커 (Seasoned Hacker)
==============================

% cc -o a.out ~/src/misc/hw/hw.c


구루(지존) 해커 (Guru Hacker)
=============================

% cat
Hello, world.
^D


신임 관리자 (New Manager)
=========================

10 PRINT HELLO WORLD
20 END


중견 관리자 (Middle Manager)
============================

mail -s Hello, world. bob(at)b12
밥, Hello, world.를 출력하는 프로그램 소스를 좀 보내주겠나?
내일까지 부탁하네.
^D


고위 관리자 (Senior Manager)
============================

% zmail jim
Hello, world. 프로그램이 오늘 오후까지 필요함.


최고 경영자 (Chief Executive)
=============================

% letter
letter: Command not found.
% mail
To: ^X ^F ^C
% help mail
help: Command not found.
% damn!
!: Event unrecognized
% logout