Hello World로 알아보는 프로그램 유형

 10 PRINT "HELLO WORLD"
 20 END

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

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

#include <stdio.h>
void main(void)
{
	char *message[] = {"Hello ", "World"};
	int i;
	for(i = 0; i < 2; ++i)
		printf("%s", message[i]);
	printf("\n");
}

#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)
{
	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);
}

[
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
	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 <windows.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 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 <windows.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 
nclude "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,
nclude
#include
#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
CEEDED(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);
}

==== 초보 해커 ====

#!/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);
}

#include <stdio.h> 
#define S "Hello, World\n"
main(){exit(printf(S) == strlen(S) ? 0 : 1);}

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

% cat
Hello, world.
^D

 10 PRINT "HELLO WORLD"
 20 END

mail -s "Hello, world." bob@b12
Bob, could you please write me a programt prints "Hello,
world."?
I need it by tomorrow.
^D

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

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