โปรแกรมเฮลโลเวิลด์

โปรแกรมเฮลโลเวิลด์ เป็นโปรแกรมคอมพิวเตอร์พื้นฐานที่ทำการแสดงผลคำว่า "Hello, World!" บนอุปกรณ์แสดงผล ซึ่งเป็นหนึ่งในโปรแกรมที่ง่ายที่สุดเท่าที่จะเป็นไปได้ในการเขียนภาษาโปรแกรมต่าง ๆ และมักถูกใช้เป็นตัวอย่างที่ง่ายที่สุดในการแสดงวากยสัมพันธ์ของภาษาโปรแกรมหนึ่ง ๆ โดยมักจะเป็นโปรแกรมแรกที่ผู้เริ่มต้นเขียนโปรแกรมเขียนออกมา นอกจากนี้ โปรแกรมเฮลโลเวิลด์ ยังสามารถใช้เพื่อตรวจสอบเบื้องต้นได้ว่า เครื่องมือของภาษาโปรแกรมถูกติดตั้งอย่างสมบูรณ์หรือไม่
ประวัติ.
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 "<code>hello, world</code>" (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.
4GL - Computer Associates with Ingres/DB.
 message "Hello, World!" with style = popup;
ABAP - SAP AG.
 REPORT ZELLO.
 WRITE 'Hello, World!'.
ABC.
 WRITE "Hello, world!"
Ada.
 Ada.Text_IO;
 Hello 
 Ada.Text_IO.Put_Line ("Hello, world!") ;
 Hello;
For explanation see .
ALGOL 68.
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!"))
AmigaE.
 PROC main 
 WriteF ('Hello, World!') ;
 ENDPROC
APL.
 'Hello World'
AppleScript.
"See also GUI section".
 return "Hello World!"
ASP.
 Response.Write ("Hello World")
or simply:
 <%="Hello World" %>
ASP.NET.
 Response.Write ("Hello World")
Assembly language.
Accumulator-only architecture: DEC PDP-8, PAL-III assembler.
"See the example section of the PDP-8 article".
First successful µP/OS combinations: Intel 8080/Zilog Z80, CP/M, RMAC assembler.
 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.
 MSG: .ASCIIZ "Hello, world!"
 LDX #$F3
 @LP: LDA MSG-$F3,X ; load character
 JSR $FFD2 ; CHROUT (KERNAL) , output to current output device (screen)
 INX
 BNE @LP ; 
 RTS
Accumulator/Index microcoded machine: Data General Nova, RDOS.
"See the example section of the Nova article."
Expanded accumulator machine: Intel x86, DOS, TASM.
 MODEL SMALL
 IDEAL
 STACK 100H
 DATASEG
 MSG DB 'Hello, world!', 13, '$'
 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.
 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
Expanded accumulator machine: Intel x86, Linux, GAS.
 .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
General-purpose fictional computer: MIX, MIXAL.
 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
General-purpose fictional computer: MMIX, MMIXAL.
string BYTE "Hello, world!",#a,0 string to be printed (#a is newline and 0 terminates the string)
 Main GETA $255,string get the address of the string in register 255
 TRAP 0,Fputs,StdOut put the string pointed to by register 255 to file StdOut
 TRAP 0,Halt,0 end process
General-purpose-register CISC: DEC PDP-11, RT-11, MACRO-11.
 .MCALL .REGDEF.TTYOUT.EXIT
 .REGDEF
 HELLO: MOV #MSG,R1
 MOVB (R1) ,R0
 LOOP: .TTYOUT
 MOVB + (R1) ,R0
 BNE LOOP
 .EXIT
 MSG: .ASCIZ /HELLO, WORLD!/
 .END HELLO
CISC on advanced multiprocessing OS: DEC VAX, VMS, MACRO-32.
.title hello
 .psect data, wrt, noexe
 chan: .blkw 1
 iosb: .blkq 1
 term: .ascid "SYS$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
RISC processor: ARM, RISC OS, BBC BASIC's in-line assembler.
 .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
AutoHotkey.
MsgBox, "Hello, World!"
Autoit.
MsgBox (1,",'Hello, world!') 
Bash.
 echo Hello,\ world!
BASIC.
General.
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.
PBASIC.
 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
StarOffice/OpenOffice Basic.
 sub main
 print "Hello, World"
 end sub
TI-BASIC.
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
Visual Basic.
 Sub Main
 MsgBox "Hello World!"
 End Sub
Visual Basic .NET.
 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
Blitz BASIC.
Print "Hello, World!"
DarkBASIC.
PRINT "HELLO WORLD"
 TEXT 0,0,"Hello World"
 WAIT KEY
BCPL.
GET "LIBHDR"
 LET START  BE
 WRITES ("Hello, world!*N")
BLISS.
 %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
boo.
"See also GUI Section".
 print "Hello, world!"
Casio FX-9750.
This program will work on the fx-9750 graphing calculator and compatibles.
 "HELLO WORLD"↵
C.
 #include <stdio.h>
 int main
 printf("Hello, world!");
 return 0;
Ch.
The above C code can run in Ch as examples. The simple one in Ch is:
 printf ("Hello, world\n") ;
C#.
"See also GUI Section".
 class HelloWorldApp
 static void Main 
 System.Console.WriteLine ("Hello, world!") ;
C++.
 #include <iostream>
 using namespace std;
 int main 
 cout « "Hello, world!\n";
C++/CLI.
 int main 
 System::Console::WriteLine ("Hello, world!") ;
C++, Managed (.NET).
 #using <mscorlib.dll>
 using namespace System;
 int wmain 
 Console::WriteLine ("Hello, world!") ;
ColdFusion (CFM).
 <cfoutput>Hello, world!</cfoutput>
COMAL.
 PRINT "Hello, World!"
CIL.
 .method public static void Main  cil managed
 .entrypoint
 .maxstack 8
 ldstr "Hello, world!"
 call void [mscorlib]System.Console::WriteLine (string)
 ret
Clean.
 module hello
 Start = "Hello, world"
CLIST.
 PROC 0
 WRITE Hello, World!
Clipper.
 @1,1 say "Hello World!"
COBOL.
 IDENTIFICATION DIVISION.
 PROGRAM-ID. HELLO-WORLD.
 ENVIRONMENT DIVISION.
 DATA DIVISION.
 PROCEDURE DIVISION.
 DISPLAY "Hello, world!".
 STOP RUN.
D.
 import std.stdio;
 void main 
 writefln ("Hello, world!") ;
DC an arbitrary precision calculator.
 [Hello, world!]p
DCL batch.
 $ write sys$output "Hello, world!"
DOLL.
 // 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!") ;
Dylan.
 module: hello
 format-out ("Hello, world!\n") ;
Ed and Ex (Ed extended).
 a
 hello world!
 p
Eiffel.
 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
Erlang.
 -module (hello).
 -export ([hello_world/0]).
 hello_world  -> io:fwrite ("Hello, world!\n").
Euphoria.
 puts (1, "Hello, world!")
F#.
 print_endline "Hello world"
Factor.
 "Hello world" print
filePro.
 @once
 mesgbox "Hello, world!"
 exit
Fjölnir.
 "hello" < main
 main ->
 stef (;)
 stofn
 skrifastreng (;"Halló Veröld!") ,
 stofnlok
 *
 "GRUNNUR"
FOCAL.
 type "Hello, World!",!
or
 t "Hello, World!",!
Focus.
 -TYPE Hello World
Forte TOOL.
 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;
Forth.
 : halloforth (--) ." Hello, world!" CR ;
FORTRAN.
 PROGRAM HELLO
 PRINT *, 'Hello, world!'
 END
Fril.
 ? ((pp "Hello, world!"))
Frink.
 println["Hello, world!"]
Gambas.
"See also GUI section".
 PUBLIC SUB Main 
 Print "Hello, world!"
 END
Game Maker.
In the draw event of some object:
 draw_text (x,y,"Hello World")
Or to show a splash screen message:
 show_message ("Hello World")
Haskell.
 module Main (main) where
 main = putStrLn "Hello World"
or
 main = putStrLn "Hello World"
Heron.
 program HelloWorld;
 functions {
 _main  {
 print_string ("Hello, world!") ;
 end
HP-41 & HP-42S.
 01 LBLTHELLO
 02 THELLO, WORLD
 03 PROMPT
HyperTalk (Apple HyperCard's scripting programming language).
 put "Hello world"
or
Answer "Hello World"
IDL.
 print,"Hello world!"
Inform.
 [ Main;
 print "Hello, world!^";
Io.
 "Hello world!" print
or
 write ("Hello world!\n")
Iptscrae.
 ON ENTER {
 "Hello, " "World!" & SAY
J.
Simplest:
 Hello World
Probably closest in semantics:
 'Hello World'
Jal.
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 = "!"
Java.
"See also GUI section".
 public class Work_name_or_tag
 public static void main (String[] args) 
 System.out.println ("Hello, world!") ;
Java byte-code.
 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
K.
 `0:"Hello world\n"
Kogut.
 WriteLine "Hello, world!"
Lisp.
Lisp has many dialects that have appeared over its almost fifty-year history.
Common Lisp.
 (format t "Hello world!~%")
or
 (write-line "Hello World!")
or merely:
 "Hello World!"
Scheme.
 (display "Hello, world!")
 (newline)
Emacs Lisp.
 (print "Hello World")
Logo.
 print [hello world!]
or
 pr [Hello World!]
In mswlogo only
 messagebox [Hi] [Hello World]
Lua.
 print "Hello, world!"
LuaPSP.
 screen:print (1,1,"Hello, world!")
 screen:flip 
M (MUMPS).
 W "Hello, world!"
Macsyma, Maxima.
 print ("Hello, world!") $
Maple.
 print ("Hello, World!") ;
Mathematica.
 Print["Hello World"]
MATLAB.
 disp ('Hello World')
Max.
 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;
Modula-2.
 MODULE Hello;
 FROM Terminal2 IMPORT WriteLn; WriteString;
 BEGIN
 WriteString ("Hello, world!") ;
 WriteLn;
 END Hello;
MOO.
 notify (player, "Hello, world!") ;
MS-DOS batch.
" (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!
MUF.
 : main
 me @ "Hello, world!" notify
Natural.
 WRITE "Hello, World!"
 END
Nemerle.
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.
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.
Objective C.
Functional C Version.
 #import <stdio.h>
 int main  {
 printf ("Hello, World!\n") ;
 return 0;
Object-Oriented C Version.
 //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;
OPENSTEP/Cocoa Version.
 int main (int argc, const char * argv[])
 NSLog (@"Hello, World!") ;
 return 0;
OCaml.
 print_endline "Hello world!"
OPL.
"See also GUI section".
 PROC hello:
 PRINT "Hello, World"
 ENDP
OPS5.
 (object-class request
 ^action)
 (startup
 (strategy MEA)
 (make request ^action hello)
 
 (rule hello
 (request ^action hello)
 (write |Hello World!| (crlf))
OPS83.
 module hello (main)
 { procedure main 
 write  |Hello, world!|, '\n';
 };
Parrot assembly language.
 print "Hello, world!\n"
 end
Pascal.
 program hello (output) ;
 begin
 writeln ('Hello, world!') 
 end.
Perl.
 print "Hello, world!\n";
Perl 6.
say "Hello World";
PHP.
 Hello, world!
or
 <?php
 echo "Hello, world!\n";
or
 <?="Hello, world!\n"?>
Pike.
 int main  {
 write ("Hello, world!\n") ;
 return 0;
PL/SQL.
 -- start anonymous block
 set serveroutput on size 10000000;
 begin
 dbms_output.enable (1000000) ;
 dbms_output.put_line ('Hello World!') ;
 end;
 -- end anonymous block
PL/I.
 Test: proc options (main) reorder;
 put skip edit ('Hello, world!') (a) ;
 end Test;
POP-11.
 'Hello world' =>
PostScript.
"See PDL section"
Processing.
 println ("Hello, world!") ;
Prolog.
 write ('Hello, world') ,nl.
Python.
 print "Hello, world!"
หรือใน Python 3.x
 print("Hello, world!")
REXX, ARexx, NetRexx, and Object REXX.
 say "Hello, world!"
RPL.
"See also GUI section".
 CLLCD
 "Hello, world!" 1 DISP
 0 WAIT
 DROP
Ruby.
"See also GUI section".
 puts "Hello, world!"
SAS.
 data _null_;
 put 'Hello, world!';
 run;
Sather.
 class HELLO_WORLD is
 main is 
 #OUT+"Hello, world\n"; 
 end; 
 end;
Scala (programming language).
 object HelloWorld with Application {
 Console.println ("Hello, world!") ;
Scriptol.
 print "Hello world!"
sed.
 sed -ne '1s/.*/Hello, world!/p'
Seed7.
$ include "seed7_05.s7i";
 const proc: main is func
 begin
 writeln ("Hello, world!") ;
 end func;
Self.
 'Hello, World!' print.
Simula.
BEGIN
 OutText ("Hello, world!") ;
 OutImage;
 END
Smalltalk.
 Transcript show: 'Hello, world!'; cr
SML.
 print "Hello, world!\n";
SNOBOL.
 OUTPUT = "Hello, world!"
 END
Span.
 class Hello {
 static public main: args {
 Console « "Hello, world!\n";
SPARK.
 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;
SPITBOL.
 OUTPUT = "Hello, world!"
 END
SQL.
 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!"
STARLET.
 RACINE: HELLO_WORLD.
 NOTIONS:
 HELLO_WORLD : ecrire ("Hello, world!").
TACL.
 #OUTPUT Hello, world!
Tcl (Tool command language).
"See also GUI section".
 puts "Hello, world!"
Turing.
 put "Hello, world!"
TSQL.
 Declare @Output varchar (16)
 Set @Output='Hello, world!'
 Select @Output
or, simpler variations:
 Select 'Hello, world!'
 Print 'Hello, world!'
UNIX-style shell.
 echo 'Hello, world!'
or
 printf '%s' $'Hello, world!\n'
or for a curses interface:
 dialog --msgbox 'Hello, world!' 0 0
Visual Prolog console program.
 #include @"pfc\console\console.ph"
 goal
 console::init  ,
 stdio::write ("Hello World!").
Graphical user interfaces (GUIs).
ActionScript (Macromedia flash mx).
 this.createTextField ("hello_txt",0,10,10,100,20) ;
 this.hello_txt.text="Hello, world";
AppleScript.
"See also TUI section".
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!"
boo.
"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.
C#.
"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) ;
Cocoa or GNUStep (In Objective C).
 @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.
 Hello, world!
Delphi, Kylix.
 program Hello_World;
 uses 
 Windows;
 begin
 ShowMessage ("Hello, world!") ;
 end.
Euphoria.
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
FLTK2 (in C++).
 #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  ;
Gambas.
"See also TUI section".
 PUBLIC SUB Main 
 Message.Info ("Hello, world!")
 END
GTK+ (in C++).
 #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  ;
 
 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;
GTK+ (in Python).
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 
Gtk# (in C#).
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  ;
 
GTK+ 2.x (in Euphoria).
 include gtk2/wrapper.e
 Info (NULL,"Hello","Hello World!")
Java.
"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.
Java applet.
 <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 (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> Hello World Example
An easier method uses JavaScript implicitly, directly calling the reserved "alert" function. Cut and paste the following line inside the <body> ... </body> HTML tags.
JavaScript and JScript.
 Hello World Example
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') ;
K.
This creates a window labeled "Hello world" with a button labeled "Hello world".
 hello:hello..l:"Hello world"
 hello..c:`button
 `show$`hello
OPL.
"See also TUI section".
 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++).
 #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 )) ;
 
 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  ;
RPL.
"See also TUI section".
(On Hewlett-Packard 
RTML.
Hello 
 TEXT "Hello, world!"
Ruby with WxWidgets.
"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
Ruby with GTK+.
"See also TUI section".
 require 'gtk2'
 Gtk.init
 window = Gtk::Window.new
 button = Gtk::Button.new ("Hello World")
 window.add (button)
 window.show_all
 Gtk.main
SWT (in Java).
 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) ;
Tcl/Tk.
"See also TUI section".
 label .l -text "Hello, world!"
 pack .l
Python with Tkinter.
"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.
 Sub Main 
 MsgBox "Hello, world!"
 End Sub
Visual Prolog note box.
 #include @"pfc\vpi\vpi.ph"
 goal
 vpiCommonDialogs::note ("Hello World!").
Windows API (in C).
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.
 <job id="HelloWorld">
 <script language="VBScript">
 WScript.Echo "Hello, world!"
 </script>
 </job>
Windows Script Host with JScript.
 <job id="HelloWorld">
 <script language="JScript">
 WScript.Echo ("Hello, world!") ;
 </script>
 </job>
XSL (T).
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>
XUL.
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.
"See: Hello world program in esoteric languages"
Document formats.
ASCII.
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
LaTeX 2ε.
 Hello, world!
Page description languages.
XHTML 1.1.
 <?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>
HTML.
 <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.
 <!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.
 %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
PostScript.
 % Displays on console.
 (Hello world!) =
 %!
 % Displays as page output.
 /Courier findfont
 24 scalefont
 setfont
 100 100 moveto
 (Hello world!) show
 showpage
RTF.
 {\rtf1\ansi\deff0
 \f0\fs20 Hello, world!
TeX.
 Hello World
 \bye
Media-based scripting languages.
AviSynth.
 BlankClip 
 Subtitle ("Hello, world!")
Lingo (Macromedia Director scripting language).
 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
POV-Ray.
 #include "colors.inc"
 camera {
 location <3, 1, -10>
 look_at <3,0,0>
 text {
 ttf "timrom.ttf" "Hello world!" 1, 0