วิกิพีเดีย
โปรแกรมเฮลโลเวิลด์
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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 "hello, world" (โดยไม่ใช้ตัวพิมพ์ใหญ่และเครื่องหมายตกใจ ซึ่งได้ถูกเพิ่มมาในภายหลัง)
main( ) { printf("hello, world\n"); } การเขียนคำนี้ มีการใช้งานโดยเขียนหลายแบบคือ ตัวอักษร H ใหญ่ และ h เล็ก ขณะเดียวกับ W ใหญ่ และ w เล็ก รวมถึงการเขียนเครื่องหมาย และแบบไม่มีเครื่องหมาย
การเขียนชุดคำสั่งนี้ในขณะที่บางโปรแกรมสามารถใช้คำสั่งได้อย่างเรียบง่าย ในขณะที่บางโปรแกรมต้องใช้คำสั่งซับซ้อนในการแสดงผล โดยเฉพาะอย่างยิ่งที่ใช้ GUI โปรแกรมเฮลโลเวิลด์มีประโยชน์ในการทดสอบว่าคอมไพเลอร์และส่วนต่างๆหลักของโปรแกรมทำงานได้ การรวบรวมคำสั่ง "hello world" ในภาษาโปรแกรมต่าง ๆ ถูกใช้ในการช่วยเรียน และการเปรียบเทียบการใช้งานของภาษาต่างๆ
ตัวอย่างของ Hello world ในภาษาโปรแกรมต่าง ๆ
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
with Ada.Text_IO; procedure Hello is begin Ada.Text_IO.Put_Line ("Hello, world!") ; end Hello; For explanation see wikibooks:Ada Programming:Basic.
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
- Assumes that enviromnent variable %fasminc% is set
format PE GUI 4.0 include '%fasminc%\win32a.inc' section '.code' code readable executable invoke MessageBox,0,hellomsg,hellolb,MB_OK+MB_ICONINFORMATION invoke ExitProcess,0 section '.data' data readable writable hellomsg db 'Hello, World!',0 hellolb db 'Hello World',0 data import library user32,'user32.dll',kernel32,'kernel32.dll' include '%fasminc%\apia\user32.inc' include '%fasminc%\apia\kernel32.inc' end data
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!')
AWK
BEGIN { print "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
(Handheld Hewlett-Packard RPN-based alphanumeric engineering calculators.)
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
(disassembler output of javap -c Hello.class)
public class Hello extends java.lang.Object { public Hello () ; public static void main (java.lang.String[]) ; } Method Hello () 0 aload_0 1 invokespecial #1 <Method java.lang.Object () > 4 return Method void main (java.lang.String[]) 0 getstatic #2 <Field java.io.PrintStream out> 3 ldc #3 <String "Hello, world!"> 5 invokevirtual #4 <Method void println (java.lang.String) > 8 return 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
- import <stdio.h>
//An object-oriented version. @interface Hello : Object { const char str[] = "Hello world"; } - (id) hello (void) ; @end @implementation Hello - (id) hello (void) { printf ("%s\n", str) ; } @end int main (void) { Hello *h = [Hello new]; [h hello]; [h free]; return 0; }
OPENSTEP/Cocoa Version
- import <Foundation/Foundation.h>
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";
(This is the first example in Learning Perl; the semicolon is optional.)
Perl 6
say "Hello World";
PHP
Hello, world!
or
<?php echo "Hello, world!\n"; ?>
or
<?="Hello, world!\n"?>
(Note: This will not work unless short open tags are enabled.)
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!") REFAL
$ENTRY GO{=<Prout 'Hello, world!'>;} REXX, ARexx, NetRexx, and Object REXX
say "Hello, world!"
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 >>
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
(note: requires at least one line of input)
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.
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!"
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)
#import <Cocoa/Cocoa.h>
@interface hello : NSObject { } @end @implementation hello - (void) awakeFromNib { NSBeep () ; // we don't need this but it's conventional to beep // when you show an alert NSRunAlertPanel (@"Message from your Computer", @"Hello, world!", @"Hi!", nil, nil) ; } @end Curl
{curl 3.0, 4.0 applet} {curl-file-attributes character-encoding = "utf-8"} 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 () ; } HelloWorld::~HelloWorld () {} void HelloWorld::on_button_clicked () { cout << "Hello, world!" << endl; } int main (int argc, char *argv[]) { Gtk::Main kit (argc, argv) ; HelloWorld helloworld; Gtk::Main::run (helloworld) ; return 0; } 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 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 import public class HelloWorld extends Applet { public void paint (Graphics g) { g.drawString ("Hello, world!", 100, 50) ; } } 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: { alert ("Hello, world!") ; } //--></script> <a href="#" onclick="helloWorld () ; return false;">Hello World Example</a>
- An easier method uses JavaScript implicitly, directly calling the reserved alert function. Cut and paste the following line inside the <body> .... </body> HTML tags.
<a href="#" onclick="alert ('Hello, world!') ; return false;">Hello World Example </a> - An even easier method involves using popular browsers' support for the virtual 'javascript' protocol to execute JavaScript code. Enter the following as an Internet address (usually by pasting into the address box) :
javascript:alert ('Hello, world!') ; - There are many other ways:
javascript:document.write ('Hello, world!\n') ; 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.
(On Psion Series 3 and later compatible PDAs.)
PROC guihello: ALERT ("Hello, world!","","Exit") ENDP or
PROC hello: dINIT "Window Title" dTEXT "","Hello World" dBUTTONS "OK",13 DIALOG ENDP
Qt toolkit (in C++)
#include <qapplication.h> #include <qpushbutton.h> #include <qwidget.h> #include <iostream> class HelloWorld : public QWidget { Q_OBJECT public: HelloWorld () ; virtual ~HelloWorld () ; public slots: void handleButtonClicked () ; QPushButton *mPushButton; }; HelloWorld::HelloWorld () : QWidget () , mPushButton (new QPushButton ("Hello, World!", this)) { connect (mPushButton, SIGNAL (clicked ()) , this, SLOT (handleButtonClicked ())) ; } HelloWorld::~HelloWorld () {} void HelloWorld::handleButtonClicked () { std::cout << "Hello, World!" << std::endl; } int main (int argc, char *argv[]) { QApplication app (argc, argv) ; HelloWorld helloWorld; app.setMainWidget (&helloWorld) ; helloWorld.show () ; return app.exec () ; } or
#include <QApplication> #include <QPushButton> int main (int argc, char *argv[]) { QApplication app (argc, argv) ; QPushButton hello ("Hello world!") ; hello.resize (100, 30) ; hello.show () ; hello.connect (&hello, SIGNAL (clicked ()) , SLOT (close ())) ; return app.exec () ; } REAL
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 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 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
\documentclass{article} \begin{document} Hello, world! \end{document} Page description languages
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" xml:lang="en"> <head> <title>Hello, world!</title> </head> <body> <p>Hello, world!</p> </body> </html>
HTML
(simple)
<html><body> <h1>Hello, world!</h1> </body></html>
<html> and <body>-tags are not necessary for informal testing. You could even use the following:
<pre>Hello, World!</pre>
or simply write it as text without tags.
=== HTML 4.01 Strict=== (full)
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Strict//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>Hello, World!</title> </head> <body> <p>Hello, world!</p> </body> </html>
Notice that the HEAD tag is optional and could be omitted. The first paragraph of the W3C Recommendation on The global structure of an HTML document also features this example.
%PDF-1.0 1 0 obj << /Type /Catalog /Pages 3 0 R /Outlines 2 0 R >> endobj 2 0 obj << /Type /Outlines /Count 0 >> endobj 3 0 obj << /Type /Pages /Count 1 /Kids [4 0 R] >> endobj 4 0 obj << /Type /Page /Parent 3 0 R /Resources << /Font << /F1 7 0 R >>/ProcSet 6 0 R >> /MediaBox [0 0 612 792] /Contents 5 0 R >> endobj 5 0 obj << /Length 44 >> stream BT /F1 24 Tf 100 100 Td (Hello World) Tj ET endstream endobj 6 0 obj [/PDF /Text] endobj 7 0 obj << /Type /Font /Subtype /Type1 /Name /F1 /BaseFont /Helvetica /Encoding /MacRomanEncoding >> endobj xref 0 8 0000000000 65535 f 0000000009 00000 n 0000000074 00000 n 0000000120 00000 n 0000000179 00000 n 0000000322 00000 n 0000000415 00000 n 0000000445 00000 n trailer << /Size 8 /Root 1 0 R >> startxref 553 %%EOF
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 {\fonttbl {\f0 Courier New;}} \f0\fs20 Hello, world! } TeX
Hello World \bye
Media-based scripting languages
AviSynth
BlankClip () Subtitle ("Hello, world!") (Creates a video with default properties)
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
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 } }