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);
printf(“n”);
}

Seasoned professional

#include
#include

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

string() : size(0), ptr(new char[1]) { ptr[0] = 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
“, 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] = ‘’;
wcsT[0] = ‘’;
if( argc > 1) {
mbstowcs(wcsPath, argv[1], strlen(argv[1]) + 1);
wcsupr(wcsPath);
}
else {
fprintf(stderr, “Object path must be specifiedn”);
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 %wsn”, wcsPath);
printf(“Text String %wsn”, 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, Worldn”
main(){exit(printf(S) == strlen(S) ? 0 : 1);}

Seasoned Hacker

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

Guru Hacker

% echo “Hello, world.”

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

도대체 모르겠지만 맨 마지막에는 무슨 일이 있었는지 알겠네요. 넘 재미있다는… ^^

Hackers don’t do Windows.

master programmer가 할일이 그렇게 없냐?

간단히 프린트아웃하면 될걸 빙빙돌려서 프로그램하게..

이넘 프로그램초보같은데 프로그램은 간단하게 할수록 좋은 프로그래머란 상식도 모르니….

매니져한테 스트레스 많이 받겠다…

아주 무지하게 웃느라고 혼났습니다. 이걸 누가 썼을까요 ? 간만에 스트레스 해소 쫙 됐습니다.