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List of hello world programs

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The following is a list of hello world programs.

1 Text user interface (Known as TUI, console or line-oriented)
2 Graphical user interfaces (GUIs)
3 Esoteric programming languages
4 Document formats
- 4.1 ASCII
5 Page description languages
6 Media-based scripting languages
7 See also
8 External links

[edit]

Text user interface (Known as TUI, console or line-oriented)

[edit]

4DOS batch

It should be noted that the 4DOS/4NT batch language is a superset of the MS-DOS batch language.

@echo Hello, world!

[edit]

4GL - Computer Associates with Ingres/DB

message "Hello, world!" with style = popup;

[edit]

Ada

with TEXT_IO;

procedure HELLO is
begin
   TEXT_IO.PUT_LINE ("Hello, world!");
end HELLO;

For explanation see wikibooks:Ada Programming:Basic.

[edit]

APL

An explicit return function for the Hello World program may be coded as follows (note: TeX fonts are not correct)

The Del on the first line begins function definition for the program named HWΔPGM. It is a niladic function (no parameters, as opposed to monadic or dyadic) and it will return an explicit result which allows other functions or APL primatives to use the returned value as input.

The line labled 1 assigns the text vector 'HELLO WORLD!' to the variable R

The last line is another Del which ends the function definition.

When the function is executed but typing its name the APL interpreter assigns the text vector to the variable R, but since we have not used this value in another function, primitive, or assignment statement the interpreter returns it to the terminal, thus displaying the words on the next line below the function invocation.

The session would look like this

      HWΔPGM
HELLO WORLD!

While not a program, if you simply supplied the text vector to the interpreter but did not assign it to a variable it would return it to the terminal as output. Note that user input is automatically indented 6 spaces by the interpreter while results are displayed at the beginning of a new line.

      'Hello, World!'
Hello World!

[edit]

AppleScript

See also GUI section.

return "Hello, world!"

[edit]

ASP

<% Response.Write("Hello, world!") %>

<% strHelloWorld = "Hello, world!" %>
<%= strHelloWorld %>

or simply:

<%= "Hello, world!" %>

[edit]

ASP.NET

// in the page behind using C#
public override void OnLoad (EventArgs e)
{
    Response.Write("Hello, world!");
}

<% Response.Write("Hello, world!") %>

<% strHelloWorld = "Hello, world!" %>
<%= strHelloWorld %>

or simply:

<%= "Hello, world!" %>

[edit]

Assembly language

[edit]

Accumulator-only architecture: DEC PDP-8, PAL-III assembler

See the example section of the PDP-8 article.

[edit]

First successful uP/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

[edit]

Popular home computer: ZX Spectrum, Zilog Z80, HiSoft GENS assembler

 10          ORG #8000    ; Start address of the routine
 20 START    LD A,2       ; set the output channel
 30          CALL #1601   ; to channel 2 (main part of TV display)
 40          LD HL,MSG    ; Set HL register pair to address of the message
 50 LOOP     LD A,(HL)    ; De-reference HL and store in A
 60          CP 0         ; Null terminator?
 70          RET Z        ; If so, return
 80          RST #10      ; Print the character in A
 90          INC HL       ; HL points at the next char to be printed
100          JR LOOP
110 MSG      DEFM "Hello, world!"
120          DEFB 13      ; carriage return
130          DEFB 0       ; null terminator

[edit]

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

[edit]

Accumulator/Index microcoded machine: Data General Nova, RDOS

See the example section of the Nova article.

[edit]

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

[edit]

Expanded accumulator machine: Intel x86, Microsoft Windows, FASM

; Example of making 32-bit PE program as raw code and data

format PE GUI
entry start

section '.code' code readable executable

  start:

        push    0
        push    _caption
        push    _message
        push    0
        call    [MessageBox]

        push    0
        call    [ExitProcess]

section '.data' data readable writeable

  _caption db 'Win32 assembly program',0
  _message db 'Hello, world!',0

section '.idata' import data readable writeable

  dd 0,0,0,RVA kernel_name,RVA kernel_table
  dd 0,0,0,RVA user_name,RVA user_table
  dd 0,0,0,0,0

  kernel_table:
    ExitProcess dd RVA _ExitProcess
    dd 0
  user_table:
    MessageBox dd RVA _MessageBoxA
    dd 0

  kernel_name db 'KERNEL32.DLL',0
  user_name db 'USER32.DLL',0

  _ExitProcess dw 0
    db 'ExitProcess',0
  _MessageBoxA dw 0
    db 'MessageBoxA',0

section '.reloc' fixups data readable discardable

[edit]

Expanded accumulator machine: Intel x86, Linux, FASM

format ELF executable
entry _start

_start:
     mov eax, 4
     mov ebx, 1
     mov ecx, msg
     mov edx, msg_len
     int 0x80

     msg db 'Hello, world!', 0xA
     msg_len = $-msg

[edit]

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

[edit]

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

[edit]

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

[edit]

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

[edit]

CISC Amiga: Motorola 68000

        xref _LVOCloseLibrary
        xref _LVOOpenLibrary
        xref _LVOPutStr

        ; open DOS library

        movea.l  4,a6
        lea.l    dosname(pc),a1
        clr.l    d0
        jsr      _LVOOpenLibrary(a6)
        movea.l  d0,a6

        ; actual print string

        move.l   #hellostr,d1
        jsr      _LVOPutStr(a6)

        ; close DOS library

        movea.l  a6,a1
        movea.l  4,a6
        jsr      _LVOCloseLibrary(a6)
        rts

dosname     dc.b 'dos.library',0

hellostr    dc.b 'Hello, world!',10,0

[edit]

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

[edit]

Mainframe: IBM z/Architecture series using BAL

HELLO    CSECT               The name of this program is 'HELLO'
         USING *,12          Tell assembler what register we are using
         SAVE (14,12)        Save registers
         LR    12,15         Use Register 12 for this program  
         WTO   'Hello World' Write To Operator
         RETURN (14,12)      Return to calling party
         END  HELLO          This is the end of the program

[edit]

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

or the even smaller version (from qUE);

         SWI"OS_WriteS":EQUS"Hello, world!":EQUB0:ALIGN:MOVPC,R14

[edit]

RISC processor: MIPS architecture

         .data
msg:     .asciiz "Hello, world!"
         .align 2
         .text
         .globl main      
main:
         la $a0,msg
         li $v0,4
         syscall
         jr $ra

[edit]

AutoHotkey

MsgBox, Hello`, world!

[edit]

AutoIt

MsgBox(1,'','Hello, world!')

[edit]

Avenue - Scripting language for ArcView GIS

MsgBox("Hello, world!","aTitle")

[edit]

AWK

BEGIN { print "Hello, world!" }

[edit]

B

This is the first known hello world program ever written:[1]

main( ) {
  extrn a, b, c;
  putchar(a); putchar(b); putchar(c); putchar('!*n');
}
a 'hell';
b 'o, w';
c 'orld';

[edit]

Bash or sh

echo 'Hello, world!'

printf 'Hello, world!\n'

[edit]

BASIC

[edit]

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

Note that the "END" statement is optional in many implementations of BASIC.

Some implementations 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.

[edit]

DarkBASIC

PRINT "HELLO WORLD"
TEXT 0,0,"Hello, world!"
WAIT KEY

[edit]

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

[edit]

StarOffice/OpenOffice Basic

sub main
    print "Hello, world!"
end sub

[edit]

TI-BASIC

On TI calculators of the TI-80 through TI-86 range:

:Disp "HELLO, WORLD!          (note the optional ending quotes) or
:"HELLO, WORLD!               (only works if on last line of program) or
:Output(X,Y,"HELLO, WORLD!    or
:Text(X,Y,"HELLO, WORLD!      (writes to the graph rather than home screen) or
:Text(-1,X,Y,"HELLO, WORLD!   (only on the 83+ and higher)

On TI-89/TI-89 Titanium/TI-92(+)/Voyage 200 calculators:

:hellowld()
:Prgm
:Disp "Hello, world!"
:EndPrgm

[edit]

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

[edit]

bc

"Hello, world!"

or, with the newline

print "Hello, world!\n"

[edit]

BCPL

GET "LIBHDR"

LET START () BE
$(
    WRITES ("Hello, world!*N")
$)

[edit]

Befunge

v >v"Hello world!"0< ,: ^_25*,@

[edit]

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

[edit]

boo

See also GUI Section.

print "Hello, world!"

[edit]

Boolfuck

;;;+;+;;+;+;
+;+;+;+;;+;;+;
;;+;;+;+;;+;
;;+;;+;+;;+;
+;;;;+;+;;+;
;;+;;+;+;+;;
;;;;;+;+;;
+;;;+;+;;;+;
+;;;;+;+;;+;
;+;+;;+;;;+;
;;+;;+;+;;+;
;;+;+;;+;;+;
+;+;;;;+;+;;
;+;+;+;

[edit]

Brainfuck

++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++++++++++++++.>.+++.------.--------.>+.>.

[edit]

Casio FX-9750

This program will work on the fx-9750 graphing calculator and compatibles.

"HELLO WORLD"↵

[edit]

C/AL - MBS Navision

OBJECT Codeunit 50000 HelloWorld
{
  PROPERTIES
  {
    OnRun=BEGIN
            MESSAGE(Txt001);
          END;
  }
  CODE
  {
    VAR
      Txt001@1000000000 : TextConst 'ENU=Hello, world';
    BEGIN
    {
      Hello World in C/AL (Microsoft Business Solutions-Navision)
    }
    END.
  }
}

[edit]

C

#include <stdio.h>

int main(int argc, char* argv[])
{
   printf("Hello, world!\n");
   return 0;
}

#include <stdio.h>

int main(int argc, char* argv[])
{
   puts("Hello, world!");
   return 0;
}

[edit]

Ch

The above C code can run in Ch as examples. The simple one in Ch is:

 printf("Hello, world!\n");

[edit]

C#

See also GUI Section.

class HelloWorldApp
{
    static void Main()
    {
        System.Console.WriteLine("Hello, world!");
    }
}

[edit]

Chrome

namespace HelloWorld;
 
interface
 
type
  HelloClass = class
  public
    class method Main; 
  end;
 
implementation
 
class method HelloClass.Main;
begin
  System.Console.WriteLine('Hello, world!');
end;
 
end.

[edit]

C++

#include <iostream>
 
int main()
{
    std::cout << "Hello, world!" << std::endl;
    return 0;
}

#include <iostream>
using namespace std;

int main()
{
    cout << "Hello, world!" << endl;
    return 0;
}

[edit]

C++/CLI

int main()
{
   System::Console::WriteLine("Hello, world!");
}

[edit]

C++, Managed (.NET)

#using <mscorlib.dll>

using namespace System;

int wmain()
{
    Console::WriteLine("Hello, world!");
}

[edit]

LPC

 void create()
 {
     write("Hello, world!\n");
 }

[edit]

ColdFusion (CFM)

<cfoutput>Hello, world!</cfoutput>

[edit]

COMAL

PRINT "Hello, world!"

[edit]

CIL

.method public static void Main() cil managed
{
     .entrypoint
     .maxstack 1
     ldstr "Hello, world!"
     call void [mscorlib]System.Console::WriteLine(string)
     ret
}

[edit]

Clean

module hello

Start = "Hello, world!"

[edit]

CLIST

PROC 0
WRITE Hello, world!

[edit]

Clipper

? "Hello, world!"

[edit]

CLU

start_up = proc ()
    po: stream := stream$primary_output ()
    stream$putl (po, "Hello, world!")
    end start_up

[edit]

COBOL

identification division.
program-id.  hello-world.
procedure division.
    display "Hello, world!"
    stop run.

The above is a very abbreviated and condensed version, which omits the author name and source and destination computer types.

[edit]

D

import std.stdio ;
 
void main () {
    writef("Hello, world!");
}

[edit]

D++

function main()
{
    screenput "Hello, world!";
}

[edit]

DC an arbitrary precision calculator

[Hello, world!]p

[edit]

DCL batch

$ write sys$output "Hello, world!"

[edit]

DOLL

this::operator()
{
        import system.cstdio;
        puts("Hello, world!");
}

[edit]

Dream Maker

mob
    Login()
        ..()
        world << "Hello, world!"

[edit]

Dylan

module: hello

format-out("Hello, world!\n");

[edit]

Ed and Ex (Ed extended)

a
hello world!
.
p

[edit]

Eiffel

class HELLO_WORLD

creation
    make
feature
    make is
    local
            io:BASIC_IO
    do
            create io
            io.put_string("%N Hello, world!")
    end -- make
end -- class HELLO_WORLD

[edit]

English

Display "Hello, world" at the top left corner of the screen.

[edit]

Erlang

-module(hello).
-export([hello_world/0]).

hello_world() -> io:fwrite("Hello, world!\n").

[edit]

Euphoria

puts(1, "Hello, world!")

[edit]

F#

print_endline "Hello, world!"

[edit]

Factor

"Hello, world!" print

[edit]

filePro

 @once:
   mesgbox "Hello, world!" ; exit

[edit]

Fjoelnir

"hello" < main
{
   main ->
   stef(;)
   stofn
       skrifastreng(;"Hallo, veroeld!"),
   stofnlok
}
*
"GRUNNUR"
;

[edit]

FOCAL

type "Hello, world!",!

t "Hello, world!",!

[edit]

Focus

-TYPE Hello, world!

[edit]

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('Hello, world!');
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;

[edit]

Forth

: HELLO  ( -- )  ." Hello, world!" CR ;
  HELLO

\ or instead of compiling a new routine, one can type directly in the Forth interpreter console
 CR ." Hello, world!" CR

[edit]

FORTRAN

   PROGRAM HELLO
     PRINT *, 'Hello, world!'
   END

[edit]

Fril

 ?((pp "Hello, world!"))

[edit]

Frink

println["Hello, world!"]

[edit]

Gambas

See also GUI section.

PUBLIC SUB Main()
  Print "Hello, world!"
END

[edit]

GEMBase 4GL

procedure_form hello
  begin_block world
      print "Hello, world!"
  end_block
end_form

[edit]

Groovy

println "Hello, world"

[edit]

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!")

Or in the messages window in debug mode:

show_debug_message("Hello, world!")

[edit]

Haskell

main = putStrLn "Hello, world!"

[edit]

Heron

program HelloWorld;
functions {
  _main() {
    print_string("Hello, world!");
  }
}
end

[edit]

HP 33s

(Handheld Hewlett-Packard RPN-based scientific calculator.)

LBL H
SF 10
EQN
RCL H
RCL E
RCL L
RCL L
RCL O
R/S
RCL W
RCL O
RCL R
RCL L
RDL D
ENTER
R/S

[edit]

HP-41 & HP-42S

(Handheld Hewlett-Packard RPN-based alphanumeric engineering calculators.)

01 LBL^THELLO

02 ^THELLO, WORLD

03 PROMPT

[edit]

HyperTalk (Apple HyperCard's scripting programming language)

put "Hello, world!"

Answer "Hello, world!"

[edit]

IDL

print,"Hello, world!"

[edit]

Inform

[ Main;
  "Hello, world!";
];

[edit]

Io

"Hello, world!" print

write("Hello, world!\n")

[edit]

Iptscrae

ON ENTER {
    "Hello, " "world!" & SAY
}

[edit]

J

Simplest:

 Hello, world!

Probably closest in semantics:

'Hello, world!'

[edit]

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 = "!"

[edit]

Java

See also GUI section.

public class HelloWorld {
     public static void main(String[] args) {
          System.out.println("Hello, world!");
     }
}

[edit]

Java byte-code

(disassembler output of javap -c HelloWorld)

public class HelloWorld extends java.lang.Object{
public HelloWorld();
 Code:
  0:   aload_0
  1:   invokespecial   #1; //Method java/lang/Object."<init>":()V
  4:   return
public static void main(java.lang.String[]);
 Code:
  0:   getstatic       #2; //Field java/lang/System.out:Ljava/io/PrintStream;
  3:   ldc     #3; //String Hello, world!
  5:   invokevirtual   #4; //Method java/io/PrintStream.println:(Ljava/lang/String;)V
  8:   return
}

[edit]

JavaScript

JavaScript does not have native (built in) input or output routines. Instead it relies on the facilities provided by it's host environment.

Using a standard Web browser's document object

document.writeln('Hello, world!');

or with an alert, using a standard Web browser's window object (window.alert)

alert('Hello, world!');

or, from the Mozilla command line implementation

print('Hello, world!');

[edit]

JSP

<%@ page contentType="text/html;charset=WINDOWS-1252"%>
<HTML>
   <BODY>
        <% out.println(" Hello World"); %> !
   </BODY>
</HTML>

[edit]

K

`0:"Hello, world!\n"

[edit]

Kogut

WriteLine "Hello, world!"

[edit]

KPL (Kids Programming Language)

Program HelloWorld
   Method Main()
      ShowConsole()
      ConsoleWriteLine("Hello World")
   End Method
End Program

[edit]

Lasso

Output: 'Hello, world!';

Output('Hello, world!');

or simply

'Hello, world!';

[edit]

Limbo

implement Command;

include "sys.m"
    sys: Sys;

include "draw.m";

include "sh.m";

init(nil: ref Draw->Context, nil: list of string)
{
    sys = load Sys Sys->PATH;
    sys->print("Hello World!\n");
}

[edit]

Lisp

Lisp has many dialects that have appeared over its almost fifty-year history.

[edit]

Common Lisp

(format t "Hello, world!~%")

(write-line "Hello, world!")

or merely:

 "Hello, world!"

[edit]

Scheme

(display "Hello, world!")

[edit]

Emacs Lisp

 (print "Hello, world!")

[edit]

AutoLisp

 (print "Hello, world!")

[edit]

XLISP

 (print "Hello, world!")

[edit]

Logo

print [Hello, world!]

pr [Hello, world!]

In mswlogo only

messagebox [Hi] [Hello, world!]

[edit]

Lua

print "Hello, world!"

io.write("Hello, world!\n")

[edit]

LuaPSP

screen:print(1,1,"Hello, world!")
screen:flip()

[edit]

M (MUMPS)

W "Hello, world!"

[edit]

M# Fictional Computer Language

[edit]

Script

main(std:string >>arg<< / OS.GetArg)
{
     std:stream >>CONSOLE<< / OS.Console;

     CONSOLE:Write([byte]{0048, 0065, 006C, 006C, 006F, 002C, 0058, 006F, 0072, 006C, 0064});
     //                    H     e     l     l     o     ,     W     o     r     l     d   //
}

[edit]

Command WI

# # DEFINE g >>CONSOLE<< / OS.Console
# % proc CONSOLE:Write([byte]{0048, 0065, 006C, 006C, 006F, 002C, 0058, 006F, 0072, 006C, 0064})

[edit]

Command WoI

# @ Write([byte]{0048, 0065, 006C, 006C, 006F, 002C, 0058, 006F, 0072, 006C, 0064})

[edit]

M4

Hello, world!

[edit]

Macsyma, Maxima

print("Hello, world!")$

[edit]

Malbolge

(=<`:9876Z4321UT.-Q+*)M'&%$H"!~}|Bzy?=|{z]KwZY44Eq0/{mlk**
hKs_dG5[m_BA{?-Y;;Vb'rR5431M}/.zHGwEDCBA@98\6543W10/.R,+O<

[edit]

Maple

print("Hello, world!");

[edit]

Mathematica

Print["Hello, world!"]

or simply:

"Hello, world!"

[edit]

MATLAB

disp('Hello, world!')

[edit]

Maude

fmod HELLOWORLD is
protecting STRING .
  op helloworld : -> String .
  eq helloworld = "Hello, world!" .
endfm
red helloworld .

[edit]

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;

[edit]

mIRC Script

//echo Hello, world!

[edit]

Model 204

BEGIN
PRINT 'Hello, world!'
END

[edit]

Modula-2

MODULE Hello;

FROM InOut IMPORT WriteLn, WriteString;

BEGIN
   WriteString ("Hello, world!");
   WriteLn
END Hello.

[edit]

MOO

notify(player, "Hello, world!");

[edit]

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.). It's very common for batchfiles to start with two lines of "@echo off" and "cls".

@echo Hello, world!

For MS-DOS 3.0 or lower

echo off
cls
echo Hello, world!

[edit]

MUF

: main
  me @ "Hello, world!" notify
;

[edit]

Natural

WRITE "Hello, world!"
END

[edit]

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!");
   }
}

[edit]

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.

[edit]

Objective C

[edit]

Functional C Version

#import <stdio.h>

int main(void)
{
    printf("Hello, world!\n");
    return 0;
}

[edit]

Object-Oriented C Version

#import <stdio.h>
#import <objc/Object.h> 

@interface Hello : Object
{
}
- hello;
@end 

@implementation Hello
- hello
{
   printf("Hello, world!\n");
}
@end 

int main(void)
{
   id obj;
   obj = [Hello new];
   [obj hello];
   [obj free];
   return 0;
}

[edit]

OPENSTEP/Cocoa Version

#import <Foundation/Foundation.h>

int main (int argc, const char * argv[])
{
   NSLog(@"Hello, world!");
   return 0;
}

[edit]

OCaml

print_endline "Hello, world!"

[edit]

occam

#USE "course.lib"

PROC hello.world(CHAN OF BYTE screen!)
  out.string("Hello, world!*n", 0, screen!)
:

or without using course.lib

PROC hello.world(CHAN OF BYTE screen!)
  SEQ
    screen ! 'H'
    screen ! 'e'
    screen ! 'l'
    screen ! 'l'
    screen ! 'o'
    screen ! ','
    screen ! ' '
    screen ! 'w'
    screen ! 'o'
    screen ! 'r'
    screen ! 'l'
    screen ! 'd'
    screen ! '!'
    screen ! '*n'
:

[edit]

OPL

See also GUI section.

PROC hello:
  PRINT "Hello, world"
ENDP

[edit]

OPS5

(object-class request
         ^action)

(startup
   (strategy MEA)
   (make request ^action hello)
)

(rule hello
   (request ^action hello)
   (write |Hello, world!| (crlf))
)

[edit]

OPS83

module hello (main)
{  procedure main( )
   {
      write() |Hello, world!|, '\n';
   };
};

[edit]

Oz programming language

{Show 'Hello World'}

[edit]

Parrot assembly language

print "Hello, world!\n"
end

[edit]

Pascal

program hello;

begin
    writeln('Hello, world!');
end.

[edit]

Perl

print "Hello, world!\n";

package Hello;
sub new() { bless {} }
sub Hello() { print "Hello, World! \n" }
package main;
my $hello = new Hello;
$hello->Hello();

(This is the first example in Learning Perl; the semicolon is optional.) There's More Than One Way To Do It ;-)

[edit]

Perl 6

"Hello, world!".say

[edit]

PHP

<?php
 echo "Hello, world!";
?>

<?php
 print "Hello, world!";
?>

or if short open tags are enabled

<?="Hello, world!"?>

[edit]

Pike

int main() {
    write("Hello, world!\n");
    return 0;
}

[edit]

PILOT

T:Hello, world!

[edit]

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

[edit]

PL/I

Test: proc options(main);
  put list('Hello, world!');
end Test;

[edit]

POP-11

'Hello, world' =>

[edit]

PostScript

See PDL section

[edit]

Processing

println("Hello, world!");

[edit]

Progress 4GL

message "Hello, world!" view-as alert-box.

[edit]

Prolog

:- write('Hello, world'),nl.

[edit]

Pure Data

#N canvas 0 0 300 300 10;
#X obj 100 100 loadbang;
#X msg 100 150 hello world;
#X obj 100 200 print;
#X connect 0 0 1 0;
#X connect 1 0 2 0;

[edit]

Python

print "Hello, world!"

or, for interactive prompt,

 "Hello, world!"

 import sys
 sys.stdout.write("Hello, world!\n")

 __import__("sys").stdout.write('Hello, world!\n')

[edit]

Rebol

See also GUI section.

print "Hello, world!"

[edit]

Redcode

; Should work with any MARS >= ICWS-86
; with 128x64 gfx core
Start MOV 0,2455
      MOV 0,2458
      MOV 0,2459
      MOV 0,2459
      MOV 0,2459
      MOV 0,2459
      MOV 0,2459
      MOV 0,2460
      MOV 0,2465
      MOV 0,2471
      MOV 0,2471
      MOV 0,2471
      MOV 0,2479
      MOV 0,2482
      MOV 0,2484
      MOV 0,2484
      MOV 0,2484
      MOV 0,2486
      MOV 0,2486
      MOV 0,2486
      MOV 0,2486
      MOV 0,2488
      MOV 0,2493
      MOV 0,2493
      MOV 0,2493
      MOV 0,2493
      MOV 0,2497
      MOV 0,2556
      MOV 0,2559
      MOV 0,2560
      MOV 0,2565
      MOV 0,2570
      MOV 0,2575
      MOV 0,2578
      MOV 0,2585
      MOV 0,2588
      MOV 0,2589
      MOV 0,2592
      MOV 0,2593
      MOV 0,2596
      MOV 0,2597
      MOV 0,2603
      MOV 0,2605
      MOV 0,2608
      MOV 0,2667
      MOV 0,2670
      MOV 0,2671
      MOV 0,2676
      MOV 0,2681
      MOV 0,2686
      MOV 0,2689
      MOV 0,2696
      MOV 0,2699
      MOV 0,2700
      MOV 0,2703
      MOV 0,2704
      MOV 0,2707
      MOV 0,2708
      MOV 0,2714
      MOV 0,2716
      MOV 0,2719
      MOV 0,2778
      MOV 0,2778
      MOV 0,2778
      MOV 0,2778
      MOV 0,2778
      MOV 0,2779
      MOV 0,2779
      MOV 0,2779
      MOV 0,2782
      MOV 0,2787
      MOV 0,2792
      MOV 0,2795
      MOV 0,2802
      MOV 0,2805
      MOV 0,2806
      MOV 0,2809
      MOV 0,2810
      MOV 0,2810
      MOV 0,2810
      MOV 0,2810
      MOV 0,2812
      MOV 0,2818
      MOV 0,2820
      MOV 0,2823
      MOV 0,2882
      MOV 0,2885
      MOV 0,2886
      MOV 0,2891
      MOV 0,2896
      MOV 0,2901
      MOV 0,2904
      MOV 0,2911
      MOV 0,2912
      MOV 0,2913
      MOV 0,2914
      MOV 0,2917
      MOV 0,2918
      MOV 0,2919
      MOV 0,2922
      MOV 0,2928
      MOV 0,2930
      MOV 0,2933
      MOV 0,2992
      MOV 0,2995
      MOV 0,2996
      MOV 0,3001
      MOV 0,3006
      MOV 0,3011
      MOV 0,3014
      MOV 0,3021
      MOV 0,3022
      MOV 0,3023
      MOV 0,3024
      MOV 0,3027
      MOV 0,3028
      MOV 0,3030
      MOV 0,3032
      MOV 0,3038
      MOV 0,3040
      MOV 0,3103
      MOV 0,3106
      MOV 0,3107
      MOV 0,3107
      MOV 0,3107
      MOV 0,3107
      MOV 0,3107
      MOV 0,3108
      MOV 0,3108
      MOV 0,3108
      MOV 0,3108
      MOV 0,3108
      MOV 0,3109
      MOV 0,3109
      MOV 0,3109
      MOV 0,3109
      MOV 0,3109
      MOV 0,3111
      MOV 0,3111
      MOV 0,3111
      MOV 0,3120
      MOV 0,3121
      MOV 0,3124
      MOV 0,3124
      MOV 0,3124
      MOV 0,3126
      MOV 0,3129
      MOV 0,3130
      MOV 0,3130
      MOV 0,3130
      MOV 0,3130
      MOV 0,3130
      MOV 0,3131
      MOV 0,3131
      MOV 0,3131
      MOV 0,3131
      MOV 0,3135
      JMP 0

[edit]

REFAL

$ENTRY GO{=<Prout 'Hello, world!'>;}

[edit]

REXX, ARexx, NetRexx, and Object REXX

/* */
say "Hello, world!"

[edit]

RPG

[edit]

Free-Form Syntax

      /FREE

          DSPLY 'Hello, world!';

          *InLR = *On;

      /END-FREE

[edit]

Traditional Syntax

With this syntax, a constant has to be used because the message must be placed in positions 12 to 25, between apostrophes.

     d TestMessage     c                   Const( 'Hello, world!' )

     c     TestMessage   DSPLY

     c                   EVAL      *InLR = *On

[edit]

RPG Code

[edit]

Message Window

Using the internal message window, a simple hello world program can be rendered thus:

mwin("Hello, world!")
wait()

[edit]

On Screen Text

An additional way to render text is by using the built in text() function.

text(1,1,"Hello, world!")
wait()

[edit]

RPL

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
>>

[edit]

RT Assembler

       _name   Hello~World!
       pause   Hello~World!
       exit
       _end

[edit]

Ruby

See also GUI section.

puts "Hello, world!"

"Hello, world!".each { |s| puts s }

[edit]

SAS

data _null_;
put 'Hello, world!';
run;

[edit]

Sather

class HELLO_WORLD is
  main is 
   #OUT+"Hello, world\n"; 
  end; 
end;

[edit]

Scala

object HelloWorld with Application {
  Console.println("Hello, world!");
}

[edit]

sed

(note: requires at least one line of input)

sed -ne '1s/.*/Hello, world!/p'

[edit]

Seed7

$ include "seed7_05.s7i";

const proc: main is func
  begin
    writeln("Hello, world!");
  end func;

[edit]

Self

'Hello, world!' print.

[edit]

Simula

BEGIN
    OutText("Hello, world!");
    OutImage;
END

[edit]

Smalltalk

Transcript show: 'Hello, world!'; cr

[edit]

SML

print "Hello, world!\n";

[edit]

SNOBOL

    OUTPUT = "Hello, world!"
END

[edit]

Span

class Hello {
  static public main: args {
    Console << "Hello, world!\n";
  }
}

[edit]

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;

[edit]

SPITBOL

    OUTPUT = "Hello, world!"
END

[edit]

SPSS Syntax

ECHO "Hello, world!".

[edit]

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');
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!"

[edit]

STARLET

RACINE: HELLO_WORLD.

NOTIONS:
HELLO_WORLD : ecrire("Hello, world!").

[edit]

SuperCollider

"Hello World".postln;

[edit]

TACL

#OUTPUT Hello, world!

[edit]

Tcl (Tool command language)

See also GUI section.

puts "Hello, world!"

[edit]

TOM (rewriting language)

public class HelloWorld {
 %include { string.tom }
 public final static void main(String[] args) {
   String who = "world";
   %match(String who) {
     "World" -> { System.out.println("Hello, " + who + "!"); }
     _       -> { System.out.println("Don't panic"); }
   }
 }

[edit]

Turing

put "Hello, world!"

[edit]

TSQL

Declare @Output varchar(16)
Set @Output='Hello, world!'
Select @Output

or, simpler variations:

Select 'Hello, world!'
Print 'Hello, world!'

[edit]

UNIX-style shell

echo 'Hello, world!'

or using an inline 'here document'

cat <<'DELIM'
Hello, world!
DELIM

printf '%s' $'Hello, world!\n'

or for a curses interface:

dialog --msgbox 'Hello, world!' 0 0

[edit]

Verilog

module main();
       initial begin
              #0 $display("Hello world!");
              #1 $finish;
       end
endmodule

or (a little more complicated)

module hello(clk);
       input clk;
       always @(posedge clk) $display("Hello world!");
endmodule
module main();
       reg     clk;
       hello H1(clk);
       initial begin
              #0 clk=0;
              #5 clk=1;
              #1 $finish;
       end
endmodule

module hello(clk);
       input clk;
       always @(posedge clk) $display("Hello world!");
endmodule
module main();
       reg     clk;
       hello H1(clk);
       initial begin
              #0 clk=0;
              #23 $display("--23--");
              #100 $finish;
       end
       always #5 clk=~clk;
endmodule

[edit]

VHDL

use std.textio.all;

entity Hello is
end Hello;

architecture Hello_Arch of Hello is
begin
       p : process
       variable l:line;
       begin
               write(l, String'("Hello, world!"));
               writeline(output, l);
               wait;
       end process;
end Hello_Arch;

[edit]

Visual Basic Script

WScript.Echo "Hello, world!"

[See additional examples on this same page under "In VBScript only": [[2]]

[edit]

Visual Prolog

#include @"pfc\console\console.ph"

goal
  console::init(),
  stdio::write("Hello, world!").

[edit]

Windows PowerShell

    "Hello, world!"

or:

   Write-Host "Hello, world!"

or:

   echo "Hello, world!"

or:

   [System.Console]::WriteLine("Hello, world!")

[edit]

Yorick

write, "Hello, world!";

Note: The semicolon is optional.

[edit]

Graphical user interfaces (GUIs)

[edit]

ActionScript (Macromedia flash mx)

 this.createTextField("hello_txt",0,10,10,100,20);

 this.hello_txt.text="Hello, world!";

[edit]

AppleScript

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!"

[edit]

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.

[edit]

C#

See also TUI section.

using System;
using System.Drawing;
using System.Windows.Forms;

public 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);
       this.Controls.Add(label);
       Button button = new Button();
       button.Text = "OK";
       button.Location = new Point(50,55);
       this.Controls.Add(button);
       button.Click += new EventHandler(button_Click);
    }

    private void button_Click(Object sender, EventArgs e) 
    {
       Application.Exit();
    }
}

or simply

public class HelloWorld
{
    static void Main()
    {
        System.Windows.Forms.MessageBox.Show("Hello, world!");
    }
}

[edit]

Cocoa or GNUStep (In Objective C)

#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

[edit]

Curl

{curl 3.0, 4.0 applet}
{curl-file-attributes character-encoding = "utf-8"}

Hello, world!

[edit]

Delphi, Kylix

program Hello_World;
uses    
  QDialogs;

begin
  ShowMessage('Hello, world!');
end.

[edit]

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

[edit]

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();
}

[edit]

G (LabVIEW)

See Labview.

[edit]

Gambas

See also TUI section.

PUBLIC SUB Main()
  Message.Info("Hello, world!")
END

[edit]

GTK+ (in C++ using GTKmm)

int main (int argc, char *argv[])
{
  Gtk::Main kit(argc, argv);

  HelloWorld helloworld;
  Gtk::Main::run(helloworld); //Shows the window and returns when it is closed.

  return 0;
}

#include <gtkmm/button.h>
#include <gtkmm/window.h>

class HelloWorld : public Gtk::Window
{

public:
  HelloWorld();
  virtual ~HelloWorld();

protected:
  //Signal handlers:
  virtual void on_button_clicked();

  //Member widgets:
  Gtk::Button m_button;
};

#include <iostream>

HelloWorld::HelloWorld()
: m_button("Hello, world!")   // creates a new button with the specified text as the label
{
  // Sets the border width of the window.
  set_border_width(10);

  // When the button receives the "clicked" signal, it will call the
  // on_button_clicked() method. The on_button_clicked() method is defined below.
  m_button.signal_clicked().connect(sigc::mem_fun(*this, &HelloWorld::on_button_clicked));

  // This packs the button into the Window (a container).
  add(m_button);

  // The final step is to display this newly created widget...
  m_button.show();
}

HelloWorld::~HelloWorld()
{
}

void HelloWorld::on_button_clicked()
{
  std::cout << "Hello, world!" << std::endl;
}

[edit]

GTK+ (in Python using PyGTK)

import pygtk
pygtk.require("2.0")
import gtk
# create window
window = gtk.Window(WINDOW_TOPLEVEL)
window.set_title("Hello, world!")
window.connect("destroy", gtk.main_quit)
# create vertical box
vbox = gtk.VBox()
# create label
lbl = Label("Hello, world!")
# add label to vertical box
vbox.add(lbl)
# create button
button = gtk.Button("OK")
# when this button is clicked, exit.
button.connect("clicked", main_quit)
# add buton to vertical box
vbox.add(button)
# add vertical box to window
window.add(vbox)
# show it all
window.show_all()
# enter the GTK mainloop.
gtk.main()

import gtk
gtk.MessageDialog(message_format="Hello, world!").run()

[edit]

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();
    }

}

[edit]

GTK+ 2.x (in Euphoria)

include gtk2/wrapper.e

Info(NULL,"Hello","Hello, world!")

[edit]

IOC/OCL (in IBM VisualAge for C++)

#include <iframe.hpp>
void main()
{
    IFrameWindow frame("Hello, world!");
    frame.showModally()
}

[edit]

Java

See also TUI section.

import javax.swing.JOptionPane;

public class Hello 
{
    public static void main(String[] args) 
    {
        JOptionPane.showMessageDialog(null, "Hello, world!");
    }
}

[edit]

Java applet

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 java.applet.*;
import java.awt.*;

public class HelloWorld extends Applet {
  public void paint(Graphics g) {
    g.drawString("Hello, world!", 100, 50);
  }
}

[edit]

JavaScript and JScript

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:

<script type="text/javascript"><!--
function helloWorld()
{
    alert("Hello, world!");
}
//--></script>

<a  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  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');

[edit]

K

This creates a window labeled "Hello, world!" with a button labeled "Hello, world!".

hello:hello..l:"Hello, world!"
hello..c:`button
`show$`hello

[edit]

LabVIEW (G)

See LabVIEW.

[edit]

Linden Scripting Language (LSL)

This says "Hello, world!" on the public chat channel:

default {
   state_entry() {
      llSay(0, "Hello, world!");
   }
}

This sets red floating text of "Hello, world!" above the prim where the script is held:

default {
   state_entry() {
      llSetText("Hello, world!", <1,0,0>, 1.0);
   }
}

[edit]

MeshDot

This actually plots Hi

draw(r
1
1
)
draw(r
1
2
)
draw(r
1
3
)
draw(r
1
4
)
draw(r
1
5
)
draw(r
1
6
)
draw(r
1
7
)
draw(r
1
8
)
draw(r
1
9
)
draw(r
2
5
)
draw(r
3
5
)
draw(r
4
5
)
draw(r
5
5
)
draw(r
6
1
)
draw(r
6
2
)
draw(r
6
3
)
draw(r
6
4
)
draw(r
6
5
)
draw(r
6
6
)
draw(r
6
7
)
draw(r
6
8
)
draw(r
6
9
)
draw(g
8
4
)
draw(g
8
6
)
draw(g
8
7
)
draw(g
8
8
)
draw(g
8
9
)

Here's a mugshot:

[edit]

Microsoft Foundation Classes (in C++)

#include <afx.h>
#include <afxwin.h>

class CHelloWin : public CWnd
{
protected:
        DECLARE_MESSAGE_MAP()
        afx_msg void OnPaint(void)
        {
                CPaintDC dc(this);
                dc.TextOut(15, 3, TEXT("Hello, world!"), 13);
        }
};

BEGIN_MESSAGE_MAP(CHelloWin, CWnd)
        ON_WM_PAINT()
END_MESSAGE_MAP()

class CHelloApp : public CWinApp
{
        virtual BOOL InitInstance();
};
 
CHelloApp theApp;
LPCTSTR wndClass;

BOOL CHelloApp::InitInstance()
{
        CWinApp::InitInstance();
        CHelloWin* hello = new CHelloWin();
        m_pMainWnd = hello;
        wndClass = AfxRegisterWndClass(CS_VREDRAW | CS_HREDRAW, 0, (HBRUSH)::GetStockObject(WHITE_BRUSH), 0);
        hello->CreateEx(0, wndClass, TEXT("Hello MFC"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 120, 50, NULL, NULL);
        hello->ShowWindow(SW_SHOW);
        hello->UpdateWindow();
        return TRUE;
}

[edit]

Adobe Flex MXML

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
<mx:Label text="Hello, world!"/>
</mx:Application>

[edit]

NSIS

This creates a message box saying "Hello, world!".

OutFile "HelloWorld.exe"
Name "Hello World"
Caption "Hello World"

Section Hello World
SectionEnd

Function .onInit
    MessageBox MB_OK "Hello, world!" 
    Quit
FunctionEnd

[edit]

OPL

See also TUI section.

(On Psion Series 3 and later compatible PDAs.)

PROC guihello:
  ALERT("Hello, world!","","Exit")
ENDP

PROC hello:
   dINIT "Window Title"
   dTEXT "","Hello, world!"
   dBUTTONS "OK",13
   DIALOG
ENDP

[edit]

Pure Data

patch as ASCII-art

[hello world(
|
[print]

patch as sourcecode

#N canvas 0 0 300 300 10;
#X msg 100 150 hello world;
#X obj 100 200 print;
#X connect 0 0 1 0;

[edit]

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()));
}

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();
}

 #include <QApplication>
 #include <QPushButton>
 #include <QVBoxLayout>

 int main(int argc, char *argv[])
 {
  QApplication app(argc, argv);

  QWidget *window = new QWidget;
  QVBoxLayout *layout = new QVBoxLayout(window);
  QPushButton *hello = new QPushButton("Hello, world!", window);

  //connect the button to quitting
  hello->connect(hello, SIGNAL(clicked()), &app, SLOT(quit()));
   
  layout->addWidget(hello);
  layout->setMargin(10);
  layout->setSpacing(10);

  window->show();

  return app.exec();
 }

[edit]

REALbasic

MsgBox "Hello, world!"

[edit]

Rebol

See also TUI section.

view layout [text "Hello, world!"]

Or for different looks, just use different styles :

view layout [
    h1 "Hello, world!"
    vh1 "Hello, world!"
    h2 "Hello, world!"
    vh2 "Hello, world!"
    h3 "Hello, world!"
    vh3 "Hello, world!"
    vtext "Hello, world!"
    ; or personalize it, if you want:
    vtext "Hello, world!" red italic underline font-size 16
]

As a notify window, it's even simpler :

notify "Hello, world!"

[edit]

RPL

See also TUI section.

(On Hewlett-Packard HP-48G and HP-49G series calculators.)

<< "Hello, world!" MSGBOX >>

[edit]

RTML

Hello ()
TEXT "Hello, world!"

[edit]

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

[edit]

Ruby with GTK+

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

[edit]

Ruby with Tk

See also TUI section

require 'tk'

window = TkRoot.new { title 'Hello, world!' }
button = TkButton.new(window) {
        text 'Hello, world!'
        command proc { exit }
        pack
}

Tk.mainloop

[edit]

Smalltalk

See also TUI section.

Evaluate in a workspace

Dialog confirm: 'Hello, world!'

Using the Morphic GUI toolkit of Squeak Smalltalk:

('Hello, World!' asMorph openInWindow) submorphs second color: Color black

Using wxSqueak:

Wx messageBox: 'Hello, world!'

[edit]

SWT (in Java)

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Display;
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);
        shell.setText("Hello, World!");
        Label label = new Label(shell, SWT.CENTER);
        label.setText("Hello, world!");
        shell.pack();
        shell.open ();
        while (!shell.isDisposed ()) {
            if (!display.readAndDispatch ()) display.sleep ();
        }
        display.dispose ();
    }
}

[edit]

Tcl/Tk

See also TUI section.

label .l -text "Hello, world!"
pack .l

[edit]

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 tkMessageBox as mb
mb.showinfo(message="Hello, world!")

[edit]

Ubercode

 Ubercode 1 class Hello
 public function main()
 code
   call Msgbox("Hello", "Hello, world!")
 end function
 end class

[edit]

Uniface

 message "Hello World"

[edit]

Virtools

[edit]

Visual Basic including VBA

Sub Main()
    MsgBox "Hello, world!"
End Sub

[edit]

Visual Basic .NET 2003

Private Sub frmForm_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
       MessageBox.Show("Hello, world!", "HELLO, WORLD!")      
       Me.Close()    
End Sub

Note that the previous example will only work when the code is entered as part of a Form subclass, such as the one created by default when generating a new project in the Visual Studio programming environment. Equivalently, the following code is roughly equivalent to the traditional Visual Basic code:

Public Class MyApplication
  Shared Sub Main()
     MessageBox.Show("Hello, world!", "HELLO WORLD")
  End Sub
End Class

[edit]

Visual Prolog (note box)

#include @"pfc\vpi\vpi.ph"

goal
  vpiCommonDialogs::note("Hello, world!").

[edit]

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;
}

[edit]

Windows PowerShell

   [System.Windows.Forms.MessageBox]::Show("Hello, world!")

[edit]

Windows Script Host with VBScript

<job id="HelloWorld">
        <script language="VBScript">
                WScript.Echo "Hello, world!"
        </script>
</job>

[edit]

In VBScript only

'CScript output stream to the command line or WScript GUI driven output
WScript.Echo "Hello, world!"

'WSH 5.6 allows for standard in and standard out at the command line
WScript.StdOut.Write("Hello, world!")

'GUI driven output with control options for the display icon and window title
Msgbox "Hello, world!",vbInformation,"Hello, world example"

'GUI driven output with all of the previous features including display time in seconds
Set WSHShell = CreateObject("WScript.Shell")
WSHShell.Popup "Hello, world!",3,"Hello, world example",vbInformation
Set WSHShell = Nothing

[edit]

Windows Script Host with JScript

<job id="HelloWorld">
        <script language="JScript">
                WScript.Echo( "Hello, world!" ) ;
        </script>
</job>

[edit]

XAML/WPF

<Page xmlns="http://schemas.microsoft.com/winfx/avalon/2005">
   <TextBlock>Hello, world!</TextBlock>
</Page>

[edit]

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 the output is to be HTML, it would be:

  <xsl:template match="/">
    <html>
      <body>
        <h1>Hello, world!</h1>
      </body>
    </html>
  </xsl:template>

[edit]

XUL

Type the following in a text file (e.g. hello.world.xul) and then open with Mozilla Firefox or another Gecko-based browser.

<?xml-stylesheet  type="text/css" ?>
<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
        align="center" pack="center" flex="1">
  <description>Hello, world!</description>
</window>

[edit]

ZK

Server-centric XUL-based Web framework. By use of Ajax, it enables browsers like IE capable of processing XUL. You can view the "hello world" window directly here.

<window title="1st window" border="normal" width="200px">
   Hello, world!
</window>

[edit]

Esoteric programming languages

See: Hello world program in esoteric languages

[edit]

Document formats

[edit]

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

[edit]

Page description languages

[edit]

XHTML 1.1

(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">
   <head>
    <title>Hello, world!</title>
   </head>
   <body>
    <p>Hello, world!</p>
   </body>
  </html>

[edit]

HTML

(simple)

<html>
 <body>
  Hello, world!
 </body>
</html>

<html> and <body>-tags are not necessary for informal testing. or simply write it as text without tags.

Hello, world!

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>
  <title>Hello, world!</title>
 </head>
 <body>
  <p>Hello, world!</p>
 </body>
</html>

The first paragraph of the W3C Recommendation on The global structure of an HTML document also features this example.

[edit]

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

[edit]

PostScript

% Displays on console.
(Hello, world!) =

%!
% Displays as page output.
/Courier findfont
24 scalefont
setfont
100 100 moveto
(Hello, world!) show
showpage

[edit]

RTF

{\rtf1\ansi\deff0
{\fonttbl {\f0 Courier New;}}
\f0\fs20 Hello, world!
}

[edit]

TeX

Hello world
\bye

[edit]

LaTeX 2ε

\documentclass{article}
\begin{document}
  Hello, world!
\end{document}

[edit]

Media-based scripting languages

[edit]

AviSynth

BlankClip()
Subtitle("Hello, world!")

(Creates a video with default properties)

[edit]

Lingo (Macromedia Director scripting language)

on exitFrame me
  put "Hello, world!"  
end

Outputs the string to the message window if placed in a single movie frame. Alternatively, to display an alert box stating the message you could use

on exitFrame me
  alert "Hello, world!"
end

[edit]

POV-Ray

#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 }
}

[edit]

External links

ACM "Hello World" project
"HelloWorld online on Web, and steps beyond HelloWorld"
A Collection of Hello World Programs
Another Collection of Hello World Programs with 260+ programs, including "Hello World" in several human languages

Retrieved from "

List of hello world programs

From Wikipedia, the free encyclopedia

Contents

Text user interface (Known as TUI, console or line-oriented)

4DOS batch

4GL - Computer Associates with Ingres/DB

ABAP - SAP AG

Accumulator-only architecture: DEC PDP-8, PAL-III assembler

First successful uP/OS combinations: Intel 8080/Zilog Z80, CP/M, RMAC assembler

Popular home computer: ZX Spectrum, Zilog Z80, HiSoft GENS assembler

Accumulator + index register machine: MOS Technology 6502, CBM KERNAL, ca65 assembler

Accumulator/Index microcoded machine: Data General Nova, RDOS

Expanded accumulator machine: Intel x86, DOS, TASM

Expanded accumulator machine: Intel x86, Microsoft Windows, FASM

Expanded accumulator machine: Intel x86, Linux, FASM

Expanded accumulator machine: Intel x86, Linux, GAS

General-purpose fictional computer: MIX, MIXAL

General-purpose fictional computer: MMIX, MMIXAL

General-purpose-register CISC: DEC PDP-11, RT-11, MACRO-11

CISC Amiga: Motorola 68000

CISC on advanced multiprocessing OS: DEC VAX, VMS, MACRO-32

Mainframe: IBM z/Architecture series using BAL

RISC processor: ARM, RISC OS, BBC BASIC's in-line assembler

RISC processor: MIPS architecture

Avenue - Scripting language for ArcView GIS

Bash or sh

General

Casio FX-9750

C/AL - MBS Navision

ColdFusion (CFM)

DC an arbitrary precision calculator

DCL batch

Ed and Ex (Ed extended)

HP-41 & HP-42S

HyperTalk (Apple HyperCard's scripting programming language)

Java byte-code

M# Fictional Computer Language

Macsyma, Maxima

MS-DOS batch