โปรแกรมเฮลโลเวิลด์
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โปรแกรมเฮลโลเวิลด์ เป็นโปรแกรมคอมพิวเตอร์พื้นฐานที่ทำการแสดงผลคำว่า "Hello, World!" บนอุปกรณ์แสดงผล ซึ่งเป็นหนึ่งในโปรแกรมที่ง่ายที่สุดเท่าที่จะเป็นไปได้ในการเขียนภาษาโปรแกรมต่าง ๆ และมักถูกใช้เป็นตัวอย่างที่ง่ายที่สุดในการแสดงวากยสัมพันธ์ของภาษาโปรแกรมหนึ่ง ๆ โดยมักจะเป็นโปรแกรมแรกที่ผู้เริ่มต้นเขียนโปรแกรมเขียนออกมา นอกจากนี้ โปรแกรมเฮลโลเวิลด์ ยังสามารถใช้เพื่อตรวจสอบเบื้องต้นได้ว่า เครื่องมือของภาษาโปรแกรมถูกติดตั้งอย่างสมบูรณ์หรือไม่
ประวัติ
[แก้]โปรแกรมเฮลโลเวิลด์โปรแกรมแรกเกิดขึ้น จากหนังสือการเขียนโปรแกรมภาษาซี แต่งโดยไบรอัน เคอร์นิงแฮน และ เดนนิส ริตชี ตีพิมพ์ในปี พ.ศ. 2521 (ค.ศ. 1978) โดยตัวอย่างโปรแกรมมาจาก กระดาษจดข้อมูลของไบรอันขณะที่ทำงานที่ เบลล์แล็บ (Bell Laboratories) ปี พ.ศ. 2517 (ค.ศ. 1974) ตัวอย่างในหนังสือ พิมพ์ข้อความว่า "hello, world" (โดยไม่ใช้ตัวพิมพ์ใหญ่และเครื่องหมายตกใจ ซึ่งได้ถูกเพิ่มมาในภายหลัง)
main( ) {
printf("hello, world\n");
}
การเขียนคำนี้ มีการใช้งานโดยเขียนหลายแบบคือ ตัวอักษร H ใหญ่ และ h เล็ก ขณะเดียวกับ W ใหญ่ และ w เล็ก รวมถึงการเขียนเครื่องหมาย และแบบไม่มีเครื่องหมาย
การเขียนชุดคำสั่งนี้ในขณะที่บางโปรแกรมสามารถใช้คำสั่งได้อย่างเรียบง่าย ในขณะที่บางโปรแกรมต้องใช้คำสั่งซับซ้อนในการแสดงผล โดยเฉพาะอย่างยิ่งที่ใช้ GUI โปรแกรมเฮลโลเวิลด์มีประโยชน์ในการทดสอบว่าคอมไพเลอร์และส่วนต่างๆหลักของโปรแกรมทำงานได้ การรวบรวมคำสั่ง "hello world" ในภาษาโปรแกรมต่าง ๆ ถูกใช้ในการช่วยเรียน และการเปรียบเทียบการใช้งานของภาษาต่างๆ
ตัวอย่างของ Hello world ในภาษาโปรแกรมต่าง ๆ
[แก้]4GL - Computer Associates with Ingres/DB
[แก้]message "Hello, World!" with style = popup;
REPORT ZELLO. WRITE 'Hello, World!'.
WRITE "Hello, world!"
with Ada.Text_IO; procedure Hello is begin Ada.Text_IO.Put_Line ("Hello, world!") ; end Hello;
For explanation see wikibooks:Ada Programming:Basic.
In the popular upper-case stropping convention for bold words:
BEGIN
print (("Hello, World!", newline))
END
or using prime stropping suitable for punch cards:
'BEGIN'
PRINT (("HELLO, WORLD!", NEWLINE))
'END'
or minimally using the short form of begin and end, and implied newline at program termination:
( print ("Hello, World!") )
PROC main ()
WriteF ('Hello, World!') ;
ENDPROC
'Hello World'
See also GUI section.
return "Hello World!"
<%
Response.Write ("Hello World")
%>
- or simply:
<%="Hello World" %>
Response.Write ("Hello World")
See the example section of the PDP-8 article.
First successful µP/OS combinations: Intel 8080/Zilog Z80, CP/M, RMAC assembler
[แก้]bdos equ 0005H ; BDOS entry point
start: mvi c,9 ; BDOS function: output string
lxi d,msg$ ; address of msg
call bdos
ret ; return to CCP
msg$: db 'Hello, world!$'
end start
Accumulator + index register machine: MOS Technology 6502, CBM KERNAL, ca65 assembler
[แก้]MSG: .ASCIIZ "Hello, world!"
LDX #$F3
@LP: LDA MSG-$F3,X ; load character
JSR $FFD2 ; CHROUT (KERNAL) , output to current output device (screen)
INX
BNE @LP ;
RTS
Accumulator/Index microcoded machine: Data General Nova, RDOS
[แก้]See the example section of the Nova article.
MODEL SMALL
IDEAL
STACK 100H
DATASEG
MSG DB 'Hello, world!', 13, '$'
CODESEG
Start:
MOV AX, @data
MOV DS, AX
MOV DX, OFFSET MSG
MOV AH, 09H ; DOS: output ASCII$ string
INT 21H
MOV AX, 4C00H
INT 21H
END Start
Expanded accumulator machine: Intel x86, Microsoft Windows, FASM
[แก้]- Assumes that enviromnent variable %fasminc% is set
format PE GUI 4.0 include '%fasminc%\win32a.inc' section '.code' code readable executable invoke MessageBox,0,hellomsg,hellolb,MB_OK+MB_ICONINFORMATION invoke ExitProcess,0 section '.data' data readable writable hellomsg db 'Hello, World!',0 hellolb db 'Hello World',0 data import library user32,'user32.dll',kernel32,'kernel32.dll' include '%fasminc%\apia\user32.inc' include '%fasminc%\apia\kernel32.inc' end data
.data
msg:
.ascii "Hello, world!\n"
len = . - msg
.text
.global _start
_start:
movl $len,%edx
movl $msg,%ecx
movl $1,%ebx
movl $4,%eax
int $0x80
movl $0,%ebx
movl $1,%eax
int $0x80
TERM EQU 19 console device no. (19 = typewriter)
ORIG 1000 start address
START OUT MSG (TERM) output data at address MSG
HLT halt execution
MSG ALF "HELLO"
ALF " WORL"
ALF "D "
END START end of program
string BYTE "Hello, world!",#a,0 string to be printed (#a is newline and 0 terminates the string)
Main GETA $255,string get the address of the string in register 255
TRAP 0,Fputs,StdOut put the string pointed to by register 255 to file StdOut
TRAP 0,Halt,0 end process
General-purpose-register CISC: DEC PDP-11, RT-11, MACRO-11
[แก้].MCALL .REGDEF,.TTYOUT,.EXIT
.REGDEF
HELLO: MOV #MSG,R1
MOVB (R1) ,R0
LOOP: .TTYOUT
MOVB + (R1) ,R0
BNE LOOP
.EXIT
MSG: .ASCIZ /HELLO, WORLD!/
.END HELLO
.title hello
.psect data, wrt, noexe
chan: .blkw 1
iosb: .blkq 1
term: .ascid "SYS$OUTPUT"
msg: .ascii "Hello, world!"
len = . - msg
.psect code, nowrt, exe
.entry hello, ^m<>
; Establish a channel for terminal I/O
$assign_s devnam=term, -
chan=chan
blbc r0, end
; Queue the I/O request
$qiow_s chan=chan, -
func=#io$_writevblk, -
iosb=iosb, -
p1=msg, -
p2=#len
; Check the status and the IOSB status
blbc r0, end
movzwl iosb, r0
; Return to operating system
end: ret
.end hello
.program
ADR R0,message
SWI "OS_Write0"
SWI "OS_Exit"
.message
DCS "Hello, world!"
DCB 0
ALIGN
หรือเวอร์ชันย่อ (จาก qUE) ;
SWI"OS_WriteS":EQUS"Hello, world!":EQUB0:ALIGN:MOVPC,R14
MsgBox, "Hello, World!"
MsgBox (1,'','Hello, world!')
BEGIN { print "Hello, world!" }
echo Hello,\ world!
General
[แก้]The following example works for any ANSI/ISO-compliant BASIC implementation, as well as most implementations built into or distributed with microcomputers in the 1970s and 1980s (usually some variant of Microsoft BASIC) :
10 PRINT "Hello, world!" 20 END
Such implementations of BASIC could also execute instructions in an immediate mode when line numbers are omitted. The following examples work without requiring a RUN instruction.
PRINT "Hello, world!" ? "Hello, world!"
Later implementations of BASIC allowed greater support for structured programming and did not require line numbers for source code. The following example works when RUN for the vast majority of modern BASICs.
PRINT "Hello, world!" END
Again, the "END" statement is optional in many BASICs.
DEBUG "Hello, world!", CR
or, the typical microcontroller Hello World program equivalent with the only output device present being a light-emitting diode (LED) (in this case attached to the seventh output pin) :
DO
HIGH 7 'Make the 7th pin go high (turn the LED on)
PAUSE 500 'Sleep for half a second
LOW 7 ' Make the 7th pin go low (turn the LED off)
PAUSE 500 'Sleep for half a second
LOOP
END
sub main
print "Hello, World"
end sub
On TI calculators of the TI-80 through TI-86 range:
:Disp "HELLO, WORLD!" or :Output (x,y,"HELLO, WORLD!") or :Text (x,y,"HELLO, WORLD!") or :Text (-1,x,y,"HELLO, WORLD!") ;only on the 83+ and higher
or simply
:"HELLO, WORLD!"
On TI-89/TI-92 (+) /Voyage 200 calculators:
:hellowld () :Prgm :Disp "Hello, world!" :EndPrgm
Sub Main MsgBox "Hello World!" End Sub
Module HelloWorldApp
Sub Main ()
System.Console.WriteLine ("Hello, world!")
End Sub
End Module
or, defined differently,
Class HelloWorldApp
Shared Sub Main ()
System.Console.WriteLine ("Hello, world!")
End Sub
End Class
Print "Hello, World!"
PRINT "HELLO WORLD"
TEXT 0,0,"Hello World" WAIT KEY
GET "LIBHDR"
LET START () BE
$ (
WRITES ("Hello, world!*N")
$)
%TITLE 'HELLO_WORLD'
MODULE HELLO_WORLD (IDENT='V1.0', MAIN=HELLO_WORLD,
ADDRESSING_MODE (EXTERNAL=GENERAL)) =
BEGIN
LIBRARY 'SYS$LIBRARY:STARLET';
EXTERNAL ROUTINE
LIB$PUT_OUTPUT;
GLOBAL ROUTINE HELLO_WORLD =
BEGIN
LIB$PUT_OUTPUT (%ASCID %STRING ('Hello World!'))
END;
END
ELUDOM
See also GUI Section.
print "Hello, world!"
This program will work on the fx-9750 graphing calculator and compatibles.
"HELLO WORLD"↵
#include <stdio.h>
int main()
{
printf("Hello, world!");
return 0;
}
The above C code can run in Ch as examples. The simple one in Ch is:
printf ("Hello, world\n") ;
See also GUI Section.
class HelloWorldApp
{
static void Main ()
{
System.Console.WriteLine ("Hello, world!") ;
}
}
#include <iostream>
using namespace std;
int main ()
{
cout << "Hello, world!\n";
}
int main ()
{
System::Console::WriteLine ("Hello, world!") ;
}
#using <mscorlib.dll>
using namespace System;
int wmain ()
{
Console::WriteLine ("Hello, world!") ;
}
ColdFusion (CFM)
[แก้]<cfoutput>Hello, world!</cfoutput>
PRINT "Hello, World!"
.method public static void Main () cil managed
{
.entrypoint
.maxstack 8
ldstr "Hello, world!"
call void [mscorlib]System.Console::WriteLine (string)
ret
}
module hello Start = "Hello, world"
PROC 0 WRITE Hello, World!
@1,1 say "Hello World!"
IDENTIFICATION DIVISION. PROGRAM-ID. HELLO-WORLD. ENVIRONMENT DIVISION. DATA DIVISION. PROCEDURE DIVISION. DISPLAY "Hello, world!". STOP RUN.
import std.stdio;
void main ()
{
writefln ("Hello, world!") ;
}
[Hello, world!]p
$ write sys$output "Hello, world!"
// The program is itself an object. The program "this" object can be overloaded
// as a function that work as "main" function in a C program.
this ()
{
system.stdout ("Hello, World!") ;
}
module: hello
format-out ("Hello, world!\n") ;
a hello world! . p
class HELLO_WORLD
creation
make
feature
make is
local
io:BASIC_IO
do
!!io
io.put_string ("%N Hello, world!")
end -- make
end -- class HELLO_WORLD
-module (hello).
-export ([hello_world/0]).
hello_world () -> io:fwrite ("Hello, world!\n").
puts (1, "Hello, world!")
print_endline "Hello world"
"Hello world" print
@once mesgbox "Hello, world!" exit
"hello" < main
{
main ->
stef (;)
stofn
skrifastreng (;"Halló Veröld!") ,
stofnlok
}
*
"GRUNNUR"
;
type "Hello, World!",!
or
t "Hello, World!",!
-TYPE Hello World
begin TOOL HelloWorld;
includes Framework;
HAS PROPERTY IsLibrary = FALSE;
forward Hello;
-- START CLASS DEFINITIONS
class Hello inherits from Framework.Object
has public method Init;
has property
shared= (allow=off, override=on) ;
transactional= (allow=off, override=on) ;
monitored= (allow=off, override=on) ;
distributed= (allow=off, override=on) ;
end class;
-- END CLASS DEFINITIONS
-- START METHOD DEFINITIONS
------------------------------------------------------------
method Hello.Init
begin
super.Init () ;
task.Part.LogMgr.PutLine ('HelloWorld!') ;
end method;
-- END METHOD DEFINITIONS
HAS PROPERTY
CompatibilityLevel = 0;
ProjectType = APPLICATION;
Restricted = FALSE;
MultiThreaded = TRUE;
Internal = FALSE;
LibraryName = 'hellowor';
StartingMethod = (class = Hello, method = Init) ;
end HelloWorld;
: halloforth ( -- ) ." Hello, world!" CR ;
PROGRAM HELLO
PRINT *, 'Hello, world!'
END
? ((pp "Hello, world!"))
println["Hello, world!"]
See also GUI section.
PUBLIC SUB Main () Print "Hello, world!" END
In the draw event of some object:
draw_text (x,y,"Hello World")
Or to show a splash screen message:
show_message ("Hello World")
module Main (main) where main = putStrLn "Hello World"
or
main = putStrLn "Hello World"
program HelloWorld;
functions {
_main () {
print_string ("Hello, world!") ;
}
}
end
(Handheld Hewlett-Packard RPN-based alphanumeric engineering calculators.)
01 LBLTHELLO 02 THELLO, WORLD 03 PROMPT
put "Hello world"
or
Answer "Hello World"
print,"Hello world!"
[ Main; print "Hello, world!^"; ];
"Hello world!" print
or
write ("Hello world!\n")
ON ENTER {
"Hello, " "World!" & SAY
}
Simplest:
Hello World
Probably closest in semantics:
'Hello World'
include 16f877_20
include hd447804 hd44780_clear hd44780 = "H" hd44780 = "e" hd44780 = "l" hd44780 = "l" hd44780 = "o" hd44780 = " " hd44780 = "W" hd44780 = "o" hd44780 = "r" hd44780 = "l" hd44780 = "d" hd44780 = "!"
See also GUI section.
public class Work_name_or_tag
{
public static void main (String[] args)
{
System.out.println ("Hello, world!") ;
}
}
(disassembler output of javap -c Hello.class)
public class Hello extends java.lang.Object {
public Hello () ;
public static void main (java.lang.String[]) ;
}
Method Hello ()
0 aload_0
1 invokespecial #1 <Method java.lang.Object () >
4 return
Method void main (java.lang.String[])
0 getstatic #2 <Field java.io.PrintStream out>
3 ldc #3 <String "Hello, world!">
5 invokevirtual #4 <Method void println (java.lang.String) >
8 return
`0:"Hello world\n"
WriteLine "Hello, world!"
Lisp has many dialects that have appeared over its almost fifty-year history.
(format t "Hello world!~%")
or
(write-line "Hello World!")
or merely:
"Hello World!"
(display "Hello, world!") (newline)
(print "Hello World")
print [hello world!]
or
pr [Hello World!]
In mswlogo only
messagebox [Hi] [Hello World]
print "Hello, world!"
screen:print (1,1,"Hello, world!") screen:flip ()
W "Hello, world!"
print ("Hello, world!") $
print ("Hello, World!") ;
Print["Hello World"]
disp ('Hello World')
max v2; #N vpatcher 10 59 610 459; #P message 33 93 63 196617 Hello world!; #P newex 33 73 45 196617 loadbang; #P newex 33 111 31 196617 print; #P connect 1 0 2 0; #P connect 2 0 0 0; #P pop;
MODULE Hello;
FROM Terminal2 IMPORT WriteLn; WriteString;
BEGIN
WriteString ("Hello, world!") ;
WriteLn;
END Hello;
notify (player, "Hello, world!") ;
(with the standard command.com interpreter. The @ symbol is optional and prevents the system from repeating the command before executing it. The @ symbol must be omitted on versions of MS-DOS prior to 3.0.)
@echo Hello, world!
: main me @ "Hello, world!" notify ;
WRITE "Hello, World!" END
The easiest way to get Nemerle print "Hello, world!" would be that:
System.Console.WriteLine ("Hello, world!") ;
however, in bigger applications the following code would be probably more useful:
using System.Console;
module HelloWorld
{
Main () :void
{
WriteLine ("Hello, world!") ;
}
}
Oberon is both the name of a programming language and an operating system.
Program written for the Oberon operating system:
MODULE Hello;
IMPORT Oberon, Texts;
VAR W: Texts.Writer;
PROCEDURE World*;
BEGIN
Texts.WriteString (W, "Hello World!") ;
Texts.WriteLn (W) ;
Texts.Append (Oberon.Log, W.buf)
END World;
BEGIN
Texts.OpenWriter (W)
END Hello.
Freestanding Oberon program using the standard Oakwood library:
MODULE Hello;
IMPORT Out;
BEGIN
Out.String ("Hello World!") ;
Out.Ln
END Hello.
Functional C Version
[แก้]#import <stdio.h>
int main () {
printf ( "Hello, World!\n" ) ;
return 0;
}
Object-Oriented C Version
[แก้]- import <stdio.h>
//An object-oriented version. @interface Hello : Object { const char str[] = "Hello world"; } - (id) hello (void) ; @end @implementation Hello - (id) hello (void) { printf ("%s\n", str) ; } @end int main (void) { Hello *h = [Hello new]; [h hello]; [h free]; return 0; }
- import <Foundation/Foundation.h>
int main (int argc, const char * argv[])
{
NSLog (@"Hello, World!") ;
return 0;
}
print_endline "Hello world!"
See also GUI section.
PROC hello: PRINT "Hello, World" ENDP
(object-class request
^action)
(startup
(strategy MEA)
(make request ^action hello)
)
(rule hello
(request ^action hello)
(write |Hello World!| (crlf))
)
module hello (main)
{ procedure main ( )
{
write () |Hello, world!|, '\n';
};
};
print "Hello, world!\n" end
program hello (output) ;
begin
writeln ('Hello, world!')
end.
print "Hello, world!\n";
(This is the first example in Learning Perl; the semicolon is optional.)
say "Hello World";
Hello, world!
or
<?php echo "Hello, world!\n"; ?>
or
<?="Hello, world!\n"?>
(Note: This will not work unless short open tags are enabled.)
int main () {
write ("Hello, world!\n") ;
return 0;
}
-- start anonymous block
set serveroutput on size 10000000;
begin
dbms_output.enable (1000000) ;
dbms_output.put_line ('Hello World!') ;
end;
-- end anonymous block
Test: proc options (main) reorder;
put skip edit ('Hello, world!') (a) ;
end Test;
'Hello world' =>
See PDL section
println ("Hello, world!") ;
write ('Hello, world') ,nl.
print "Hello, world!"
หรือใน Python 3.x
print("Hello, world!")
$ENTRY GO{=<Prout 'Hello, world!'>;}
REXX, ARexx, NetRexx, and Object REXX
[แก้]say "Hello, world!"
See also GUI section.
(On Hewlett-Packard HP-28, HP-48 and HP-49 series graphing calculators.)
<< CLLCD "Hello, world!" 1 DISP 0 WAIT DROP >>
See also GUI section.
puts "Hello, world!"
data _null_; put 'Hello, world!'; run;
class HELLO_WORLD is main is #OUT+"Hello, world\n"; end; end;
object HelloWorld with Application {
Console.println ("Hello, world!") ;
}
print "Hello world!"
(note: requires at least one line of input)
sed -ne '1s/.*/Hello, world!/p'
$ include "seed7_05.s7i";
const proc: main is func
begin
writeln ("Hello, world!") ;
end func;
'Hello, World!' print.
BEGIN
OutText ("Hello, world!") ;
OutImage;
END
Transcript show: 'Hello, world!'; cr
print "Hello, world!\n";
OUTPUT = "Hello, world!" END
class Hello {
static public main: args {
Console << "Hello, world!\n";
}
}
with Spark_IO; --# inherit Spark_IO; --# main_program; procedure Hello_World --# global in out Spark_IO.Outputs; --# derives Spark_IO.Outputs from Spark_IO.Outputs; is begin Spark_IO.Put_Line (Spark_IO.Standard_Output, "Hello, world!", 0) ; end Hello_World;
OUTPUT = "Hello, world!" END
CREATE TABLE message (text char (15)) ;
INSERT INTO message (text) VALUES ('Hello, world!') ;
SELECT text FROM message;
DROP TABLE message;
or (e.g. Oracle dialect)
SELECT 'Hello, world!' FROM dual;
or (for Oracle's PL/SQL proprietary procedural language)
BEGIN
DBMS_OUTPUT.ENABLE (1000000) ;
DBMS_OUTPUT.PUT_LINE ('Hello World, from PL/SQL') ;
END;
or (e.g. MySQL or PostgreSQL dialect)
SELECT 'Hello, world!';
or (e.g. T-SQL dialect)
PRINT 'Hello, world!'
or (for KB-SQL dialect)
select Null from DATA_DICTIONARY.SQL_QUERY FOOTER or HEADER or DETAIL or FINAL event write "Hello, world!"
RACINE: HELLO_WORLD.
NOTIONS:
HELLO_WORLD : ecrire ("Hello, world!").
#OUTPUT Hello, world!
See also GUI section.
puts "Hello, world!"
put "Hello, world!"
Declare @Output varchar (16) Set @Output='Hello, world!' Select @Output
or, simpler variations:
Select 'Hello, world!' Print 'Hello, world!'
echo 'Hello, world!'
or
printf '%s' $'Hello, world!\n'
or for a curses interface:
dialog --msgbox 'Hello, world!' 0 0
Visual Prolog console program
[แก้]#include @"pfc\console\console.ph"
goal
console::init () ,
stdio::write ("Hello World!").
Graphical user interfaces (GUIs)
[แก้]ActionScript (Macromedia flash mx)
[แก้] this.createTextField ("hello_txt",0,10,10,100,20) ;
this.hello_txt.text="Hello, world";
See also TUI section.
display dialog "Hello World!" buttons {"OK"} default button 1
Or to have the OS synthesize it and literally speak out the words "hello world!" (with no comma, as that would cause the synthesizer to pause)
say "Hello world!"
See also TUI section.
import System.Drawing
import System.Windows.Forms
f = Form ()
f.Controls.Add (Label (Text: "Hello, World!", Location: Point (40,30)))
f.Controls.Add (Button (Text: "Ok", Location: Point (50, 55) , Click: {Application.Exit () }))
Application.Run (f)
Functional equivalent of C# program below.
See also TUI section.
using System;
using System.Drawing;
using System.Windows.Forms;
class HelloWorldForm : Form {
public static void Main () {
Application.Run (new HelloWorldForm ()) ;
}
public HelloWorldForm () {
Label label = new Label () ;
label.Text = "Hello, World!";
label.Location = new Point (40,30) ;
Controls.Add (label) ;
Button button = new Button () ;
button.Text = "OK";
button.Location = new Point (50,55) ;
Controls.Add (button) ;
button.Click += new EventHandler (OnButtonOk) ;
}
void OnButtonOk (Object sender, EventArgs e) {
Application.Exit () ;
}
}
or ||
using System;
using System.Drawing;
using System.Windows.Forms;
namespace HelloWorld
{
public class HelloWorld : Form
{
public HelloWorld ()
{
ShowMessage () ;
}
[STAThread]
static void Main ()
{
Application.Run (new HelloWorld ()) ;
}
private void ShowMessage ()
{
MessageBox.Show (
"Hello World!!!",
"Hello World - C#",
MessageBoxButtons.OK,
MessageBoxIcon.Information,
MessageBoxDefaultButton.Button1 ) ;
}
}
}
#import <Cocoa/Cocoa.h>
@interface hello : NSObject {
}
@end
@implementation hello
- (void) awakeFromNib
{
NSBeep () ; // we don't need this but it's conventional to beep
// when you show an alert
NSRunAlertPanel (@"Message from your Computer", @"Hello, world!", @"Hi!",
nil, nil) ;
}
@end
{curl 3.0, 4.0 applet}
{curl-file-attributes character-encoding = "utf-8"}
Hello, world!
program Hello_World;
uses
Windows;
begin
ShowMessage ("Hello, world!") ;
end.
MS-Windows only - basic.
include msgbox.e
if message_box ("Hello, world!", "Hello", 0) then end if
MS-Windows only - using Win32Lib library
include win32lib.ew
createForm ({
";Window; Hello",
";Label; Hello, World!"
})
include w32start.ew
#include <fltk/Window.h>
#include <fltk/Widget.h>
#include <fltk/run.h>
using namespace fltk;
int main (int argc, char **argv)
{
Window *window = new Window (300, 180) ;
window->begin () ;
Widget *box = new Widget (20, 40, 260, 100, "Hello, World!") ;
box->box (UP_BOX) ;
box->labelfont (HELVETICA_BOLD_ITALIC) ;
box->labelsize (36) ;
box->labeltype (SHADOW_LABEL) ;
window->end () ;
window->show (argc, argv) ;
return run () ;
}
See also TUI section.
PUBLIC SUB Main ()
Message.Info ("Hello, world!")
END
#include <iostream>
#include <gtkmm/main.h>
#include <gtkmm/button.h>
#include <gtkmm/window.h>
using namespace std;
class HelloWorld : public Gtk::Window {
public:
HelloWorld () ;
virtual ~HelloWorld () ;
protected:
Gtk::Button m_button;
virtual void on_button_clicked () ;
};
HelloWorld::HelloWorld ()
: m_button ("Hello, world!") {
set_border_width (10) ;
m_button.signal_clicked ().connect (SigC::slot (*this,
&HelloWorld::on_button_clicked)) ;
add (m_button) ;
m_button.show () ;
}
HelloWorld::~HelloWorld () {}
void HelloWorld::on_button_clicked () {
cout << "Hello, world!" << endl;
}
int main (int argc, char *argv[]) {
Gtk::Main kit (argc, argv) ;
HelloWorld helloworld;
Gtk::Main::run (helloworld) ;
return 0;
}
from gtk import *
window = Window (WINDOW_TOPLEVEL)
window.set_title ("Hello World!")
window.connect ("destroy", main_quit)
window.add (VBox ())
window.child.pack_start (Label ("Hello World!"))
button=Button ("OK")
window.child.pack_end (button)
button.connect ("clicked", main_quit)
window.show_all ()
main ()
or
import gtk gtk.MessageDialog (message_format="Hello World!").run ()
using Gtk;
using GtkSharp;
using System;
class Hello {
static void Main ()
{
Application.Init () ;
Window window = new Window ("") ;
window.DeleteEvent += cls_evn;
Button close = new Button ("Hello World") ;
close.Clicked += new EventHandler (cls_evn) ;
window.Add (close) ;
window.ShowAll () ;
Application.Run () ;
}
static void cls_evn (object obj, EventArgs args)
{
Application.Quit () ;
}
}
include gtk2/wrapper.e Info (NULL,"Hello","Hello World!")
See also TUI section.
import javax.swing.JOptionPane;
public class Hello {
public static void main (String[] args) {
JOptionPane.showMessageDialog (null, "Hello, world!!") ;
}
}
- Java applets work in conjunction with HTML files.
<HTML> <HEAD> <TITLE>Hello World</TITLE> </HEAD> <BODY> HelloWorld Program says: <APPLET CODE="HelloWorld.class" WIDTH=600 HEIGHT=100> </APPLET>
</BODY> </HTML>
import
import
public class HelloWorld extends Applet {
public void paint (Graphics g) {
g.drawString ("Hello, world!", 100, 50) ;
}
}
JavaScript and JScript
[แก้]- JavaScript (an implementation of ECMAScript) is a client-side scripting language used in HTML files. The following code can be placed in any HTML file: { alert ("Hello, world!") ; } //--></script> <a href="#" onclick="helloWorld () ; return false;">Hello World Example</a>
- An easier method uses JavaScript implicitly, directly calling the reserved alert function. Cut and paste the following line inside the <body> .... </body> HTML tags.
<a href="#" onclick="alert ('Hello, world!') ; return false;">Hello World Example
</a>
- An even easier method involves using popular browsers' support for the virtual 'javascript' protocol to execute JavaScript code. Enter the following as an Internet address (usually by pasting into the address box) :
javascript:alert ('Hello, world!') ;
- There are many other ways:
javascript:document.write ('Hello, world!\n') ;
This creates a window labeled "Hello world" with a button labeled "Hello world".
hello:hello..l:"Hello world" hello..c:`button `show$`hello
See also TUI section.
(On Psion Series 3 and later compatible PDAs.)
PROC guihello:
ALERT ("Hello, world!","","Exit")
ENDP
or
PROC hello: dINIT "Window Title" dTEXT "","Hello World" dBUTTONS "OK",13 DIALOG ENDP
Qt toolkit (in C++)
[แก้]#include <qapplication.h>
#include <qpushbutton.h>
#include <qwidget.h>
#include <iostream>
class HelloWorld : public QWidget
{
Q_OBJECT
public:
HelloWorld () ;
virtual ~HelloWorld () ;
public slots:
void handleButtonClicked () ;
QPushButton *mPushButton;
};
HelloWorld::HelloWorld () :
QWidget () ,
mPushButton (new QPushButton ("Hello, World!", this))
{
connect (mPushButton, SIGNAL (clicked ()) , this, SLOT (handleButtonClicked ())) ;
}
HelloWorld::~HelloWorld () {}
void HelloWorld::handleButtonClicked ()
{
std::cout << "Hello, World!" << std::endl;
}
int main (int argc, char *argv[])
{
QApplication app (argc, argv) ;
HelloWorld helloWorld;
app.setMainWidget (&helloWorld) ;
helloWorld.show () ;
return app.exec () ;
}
or
#include <QApplication>
#include <QPushButton>
int main (int argc, char *argv[])
{
QApplication app (argc, argv) ;
QPushButton hello ("Hello world!") ;
hello.resize (100, 30) ;
hello.show () ;
hello.connect (&hello, SIGNAL (clicked ()) , SLOT (close ())) ;
return app.exec () ;
}
See also TUI section.
(On Hewlett-Packard
Hello ()
TEXT "Hello, world!"
See also TUI section.
require 'wxruby'
class HelloWorldApp < Wx::App
def on_init
ourFrame = Wx::Frame.new (nil, -1, "Hello, world!").show
ourDialogBox = Wx::MessageDialog.new (ourFrame, "Hello, world!", "Information:", \
Wx::OK|Wx::ICON_INFORMATION).show_modal
end
end
HelloWorldApp.new.main_loop
See also TUI section.
require 'gtk2'
Gtk.init
window = Gtk::Window.new
window.signal_connect ("delete_event") { Gtk.main_quit; false }
button = Gtk::Button.new ("Hello World")
button.signal_connect ("clicked") { Gtk.main_quit; false }
window.add (button)
window.show_all
Gtk.main
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Label;
public class SWTHello {
public static void main (String [] args) {
Display display = new Display () ;
final Shell shell = new Shell (display) ;
RowLayout layout = new RowLayout () ;
layout.justify = true;
layout.pack = true;
shell.setLayout (layout) ;
See also TUI section.
label .l -text "Hello, world!" pack .l
See also TUI section.
import Tkinter r = Tkinter.Tk () w = Tkinter.Label (r, text="Hello, world!") w.pack () r.mainloop ()
or, more primitively:
import
Visual Basic including VBA
[แก้]Sub Main ()
MsgBox "Hello, world!"
End Sub
Visual Prolog note box
[แก้]#include @"pfc\vpi\vpi.ph"
goal
vpiCommonDialogs::note ("Hello World!").
Windows API (in C)
[แก้]This uses the Windows API to create a full window containing the text. Another example below uses the built-in MessageBox function instead.
#include <windows.h>
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM) ;
char szClassName[] = "MainWnd";
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine,
int nCmdShow)
{
HWND hwnd;
MSG msg;
WNDCLASSEX wincl;
wincl.cbSize = sizeof (WNDCLASSEX) ;
wincl.cbClsExtra = 0;
wincl.cbWndExtra = 0;
wincl.style = 0;
wincl.hInstance = hInstance;
wincl.lpszClassName = szClassName;
wincl.lpszMenuName = NULL; //No menu
wincl.lpfnWndProc = WindowProcedure;
wincl.hbrBackground = (HBRUSH) (COLOR_WINDOW + 1) ; //Color of the window
wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION) ; //EXE icon
wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION) ; //Small program icon
wincl.hCursor = LoadCursor (NULL, IDC_ARROW) ; //Cursor
if (!RegisterClassEx (&wincl))
return 0;
hwnd = CreateWindowEx (0, //No extended window styles
szClassName, //Class name
"", //Window caption
WS_OVERLAPPEDWINDOW & ~WS_MAXIMIZEBOX,
CW_USEDEFAULT, CW_USEDEFAULT, //Let Windows decide the left and top
//positions of the window
120, 50, //Width and height of the window,
NULL, NULL, hInstance, NULL) ;
//Make the window visible on the screen
ShowWindow (hwnd, nCmdShow) ;
//Run the message loop
while (GetMessage (&msg, NULL, 0, 0) >0)
{
TranslateMessage (&msg) ;
DispatchMessage (&msg) ;
}
return msg.wParam;
}
LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message,
WPARAM wParam, LPARAM lParam)
{
PAINTSTRUCT ps;
HDC hdc;
switch (message)
{
case WM_PAINT:
hdc = BeginPaint (hwnd, &ps) ;
TextOut (hdc, 15, 3, "Hello, world!", 13) ;
EndPaint (hwnd, &ps) ;
break;
case WM_DESTROY:
PostQuitMessage (0) ;
break;
default:
return DefWindowProc (hwnd, message, wParam, lParam) ;
}
return 0;
}
Or, much more simply:
#include <windows.h>
int WINAPI WinMain (HINSTANCE hInst, HINSTANCE hPrevInstance, LPSTR lpCmdLine,
int nCmdShow)
{
MessageBox (NULL, "Hello, world!", "", MB_OK) ;
return 0;
}
Windows Script Host with VBScript
[แก้]<job id="HelloWorld">
<script language="VBScript">
WScript.Echo "Hello, world!"
</script>
</job>
Windows Script Host with JScript
[แก้]<job id="HelloWorld">
<script language="JScript">
WScript.Echo ( "Hello, world!" ) ;
</script>
</job>
There are many ways to do this in XSL, the simplest being:
<xsl:template match="/"> <xsl:text>Hello, world!</xsl:text> </xsl:template>
If nested similar to the HTML version, it would be:
<xsl:template match="/">
<html>
<body>
<h1>Hello, world!</h1>
</body>
</html>
</xsl:template>
Type the following in a text file (e.g. hello.world.xul) and then open with Mozilla Firefox.
<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"> <box align="center" pack="center" flex="1"> <description>Hello, world</description> </box> </window>
Esoteric programming languages
[แก้]See: Hello world program in esoteric languages
Document formats
[แก้]The following sequence of characters, expressed in hexadecimal notation (with carriage return and newline characters at end of sequence) :
48 65 6C 6C 6F 2C 20 77 6F 72 6C 64 21 0D 0A
The following sequence of characters, expressed as binary numbers (with cr/nl as above, and the same ordering of bytes) :
00–07: 01001000 01100101 01101100 01101100 01101111 00101100 00100000 01110111 08–0E: 01101111 01110010 01101100 01100100 00100001 00001101 00001010
\documentclass{article}
\begin{document}
Hello, world!
\end{document}
(Using UTF-8 character set.)
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<title>Hello, world!</title>
</head>
<body>
<p>Hello, world!</p>
</body>
</html>
(simple)
<html><body> <h1>Hello, world!</h1> </body></html>
<html> and <body>-tags are not necessary for informal testing. You could even use the following:
<pre>Hello, World!</pre>
or simply write it as text without tags.
=== HTML 4.01 Strict=== (full)
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Strict//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>Hello, World!</title> </head> <body> <p>Hello, world!</p> </body> </html>
Notice that the HEAD tag is optional and could be omitted. The first paragraph of the W3C Recommendation on The global structure of an HTML document also features this example.
%PDF-1.0 1 0 obj << /Type /Catalog /Pages 3 0 R /Outlines 2 0 R >> endobj 2 0 obj << /Type /Outlines /Count 0 >> endobj 3 0 obj << /Type /Pages /Count 1 /Kids [4 0 R] >> endobj 4 0 obj << /Type /Page /Parent 3 0 R /Resources << /Font << /F1 7 0 R >>/ProcSet 6 0 R >> /MediaBox [0 0 612 792] /Contents 5 0 R >> endobj 5 0 obj << /Length 44 >> stream BT /F1 24 Tf 100 100 Td (Hello World) Tj ET endstream endobj 6 0 obj [/PDF /Text] endobj 7 0 obj << /Type /Font /Subtype /Type1 /Name /F1 /BaseFont /Helvetica /Encoding /MacRomanEncoding >> endobj xref 0 8 0000000000 65535 f 0000000009 00000 n 0000000074 00000 n 0000000120 00000 n 0000000179 00000 n 0000000322 00000 n 0000000415 00000 n 0000000445 00000 n trailer << /Size 8 /Root 1 0 R >> startxref 553 %%EOF
% Displays on console. (Hello world!) = %! % Displays as page output. /Courier findfont 24 scalefont setfont 100 100 moveto (Hello world!) show showpage
{\rtf1\ansi\deff0
{\fonttbl {\f0 Courier New;}}
\f0\fs20 Hello, world!
}
Hello World \bye
Media-based scripting languages
[แก้]BlankClip ()
Subtitle ("Hello, world!")
(Creates a video with default properties)
Lingo (Macromedia Director scripting language)
[แก้]on exitFrame me put "Hello, World!" end
Outputs the string to the message window if placed in a hhzhzx movie frame. Alternatively, to display an alert box stating the message you could use
on exitFrame me alert "Hello, World!" end
#include "colors.inc"
camera {
location <3, 1, -10>
look_at <3,0,0>
}
light_source { <500,500,-1000> White }
text {
ttf "timrom.ttf" "Hello world!" 1, 0
pigment { White }
}