Hello World

王朝other·作者佚名  2006-01-09
窄屏简体版  字體: |||超大  

High School/Jr.High

念高中時的程式碼

10 PRINT "HELLO WORLD"

20 END

First year in College

在大學的第一年的程式碼

program Hello(input, output)

begin

writeln('Hello World')

end.

Senior year in College

在大學的高年級的程式碼

(defun hello

(print

(cons 'Hello (list 'World))))

New professional

成為公司的新人員

#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

進入公司有兩年了

#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

升成軟體部經理那年寫的程式

[

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

駭客學徒階段

#!/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

有經驗經驗的駭客

#include <stdio.h>

#define S "Hello, World\n"

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

Seasoned Hacker

有經驗豐富的駭客

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

% a.out

Guru Hacker

成為駭客界的精神導師

% echo "Hello, world."

 
 
 
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