一個程序員的進化 娛樂

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中學


10 PRINT "HELLO WORLD"

20 END


在大學的第一年(大一)


program Hello(input, output)

begin

writeln('Hello World')

end.


在大學的第四年(大四)


(defun hello

(print

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


實習生


#include <stdio.h>

void main(void)

{

char *message[] = {"Hello ", "World"};

int i;


for(i = 0; i < 2; ++i)

printf("%s", message[i]);

printf("\n");

}


有經驗的程序員


#include <iostream.h>

#include <string.h>


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);

}


核心程序員


[

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

", 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);

}


初級黑客


#!/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;


有經驗的黑客


#include <stdio.h>

#define S "Hello, World\n"

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


經驗豐富的黑客


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


% a.out


大師級別的黑客


% echo "Hello, world."


升職為經理


10 PRINT "HELLO WORLD"

20 END


中級經理


mail -s "Hello, world." bob@b12

Bob, could you please write me a program that prints "Hello, world."?

I need it by tomorrow.

^D


高級經理


% zmail jim

I need a "Hello, world." program by this afternoon.


首席執行官/CEO


% letter


letter: Command not found.

% mail

To: ^X ^F ^C

% help mail

help: Command not found.

% damn!

!: Event unrecognized

% logout


說說你現在進化到哪一步了。

本文由IT江湖 翻譯自 Ariel


CocoaChina 2015-08-23 08:55:51

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