“Hello, World!”程序是一个只在计算机屏幕上打印出“Hello, World!”(英语,意为“世界,你好!”)字串的计算机程序。该程序通常是计算机程序设计语言的初学者所要学习编写的第一个程序。它还可以用来确定该语言的编译器、程序开发环境以及运行环境已经正确安装。 [b`6v`x
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 ]*ov&{'
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以下是用不同语言写成的Hello World程序的几个例子: !A[S6-18%-
Ada c#\-%h
with Ada.Text_Io; use Ada.Text_Io; AMk~dzNt
procedure Hello is pT=2e&
begin xv0M
Put_Line ("Hello, world!"); $!`L"szqD*
end Hello; 5G?.T?
o=9'
YsAF{
汇编语言 RG?MRxC
,h!X k
x86 CPU,DOS,TASM aJ2H.E
MODEL SMALL @}eNV~ROu
IDEAL R$xY8+}V
STACK 100H c$#GM57V
.3g&9WvN!Z
DATASEG &|=?acv
HW DB 'Hello, world!$' 4 =Fg!Eu<
H7jTQW0rp5
CODESEG cV]y=q6
MOV AX, @data WEVl9]b'e+
MOV DS, AX ^K*-G@B
MOV DX, OFFSET HW OROqT~6G
MOV AH, 09H ylkqhs&
INT 21H 2nx9#B*/T
MOV AX, 4C00H vPsq<l}
INT 21H L<)Z> @fR
END 0P9Wy!f7
"/y|VTV"
AM?Ec1S
#a
x86 CPU,GNU/Linux,NASM 5bBCpNa
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). DR{]sG
;Enter this into "hello.asm" then type: j i##$xC
;"nasm -f elf hello.asm" A`C-sD>
;"ld hello.o -o hello" r|bPR!0
;"./hello" {]M>Y%j48
.93S>U< _
section .data ;data section declaration Ma_=-cD
msg db 'Hello World!',0AH bs:QG1*.
len equ $-msg ;string length ]Wy.R6
_ _=s'
section .text ;code section declaration Ps 7_-cH
global _start ;entry point (start of execution) x3;jWg~'
_start: mov edx,len ;string length s7|3zqi
mov ecx,msg ;string start R2Yl)2
D
mov ebx,1 ;file handle: stdout Jy`G]]?
mov eax,4 ;sys_write \-G5l+!
int 80h ;kernel system call j ]HE>
uTw|Q{ f
mov ebx,0 ;return value pe#*I/)b
mov eax,1 ;sys_exit Yhk6Uog{4
int 80h ;kernel system call 2+&R"#I
tnL."^%A2I
/Tcb\:`9
x86 CPU,Windows,MASM32 ^yD"d =z
.386 &vkp?UH
.model flat,stdcall zP|*(*
option casemap:none lrn+d$!@
;Include 文件定义 Zx9.p Fc"
include windows.inc r8+*|$K
include user32.inc 9;pzzZ
includelib user32.lib <THUsY`3P&
include kernel32.inc )BB%4=u@~.
includelib kernel32.lib s+N^PX3
;数据段 dv[\.T`LY
.data J5-rp|
szCaption db 'A MessageBox!',0 3z$HKG
szText db 'Hello,world!',0 L77EbP`P
;代码段 #Wq#beBb
.code
Q_v\1"c
start: {\lui eG
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK
Y 0]Kl^\A
invoke ExitProcess,NULL 4UazD_`'
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> -g<cinNSp
end start L-MiaKc L
pr)K{~m]{<
# a.\P.{L
AWK tNYJQ
BEGIN { print "Hello, world!" } S8vx[ <
p/4S$
j#Tn
,?fN#gc :
BASIC Q+HZ?V(
传统版BASIC(例如GWBASIC): @F~0p5I
pNBa.4z:
10 PRINT "Hello, world!" ?{n>EvLY
20 END wYa0hNd
?U$}Rsk{#
或在提示符输入: <gR`)YF7
8 `o{b"l+
?"Hello, world!":END Gk{W:866
V!H(;Tuuo
现代版BASIC(例如Quick BASIC): |O%:P}6c
O<bDU0s{M
Print "Hello, world!" z,M'Tr.1|
)2#vhMpdN
以下的语句在Quick BASIC中同样有效: nxD'r
tb:
? "Hello,world!" FBcm;cjH
M,ppCHy/$
BZ2nDW*%
BCPL l~ CZW*/
GET "LIBHDR" I>d I[U
|z ]aa
LET START () BE |}%(6<
$( v?FhG
b~1
WRITES ("Hello, world!*N") ws.?cCTpt
$) "h QV9 [2\
S ]vW&r3`
l#p}{
Befunge KQ- ,W8Q5
"!dlrow olleH">v a (P^e)<
, dEL3?-;'
^_@ <( cM*kV
n#)PvV~
C0P*D,
Brainfuck K*0aXr?
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< jGJ.Pvc>i
+++++++++++++++.>.+++.------.--------.>+.>. lGl[^
0
S_ZLTcq<1
4n#YDZ
C G]1(X38[si
#include <stdio.h> r(pwOOx
}7-7t{G
int main(void) `Fz\wPd
{ &3jBE--
printf("Hello, world!\n"); ;HR 6X
return 0; VjC*(6<Gj
} te4F"SEf
fFjL pl
U0!^m1U:
C++ 0`V3s]%iu
#include <iostream> .MzOLv
mu 2
A% "7
int main() \nrgAC-b
{
{VS''Lv
std::cout << "Hello, world!" << std::endl; f2`P8$U)R
return 0; B{[f}h.n
} R|nEd/'<
:U!'U;uQ
]jZiW1C*a
C++/CLI ]z+*?cc
int main() ROP C |
{ =fL6uFmxI@
System::Console::WriteLine("Hello, world!"); |= tJ|
} =X)Q7u".7
,Le&I9*%
Y;'VosTD
C# (C Sharp) -08&&H
class HelloWorldApp (Nm}3 p
{ t|go5DXz4
public static void Main() e$ThSh\+(
{ TP{>O%b
System.Console.WriteLine("Hello, world!"); R)sp
} 3Ne9%"
} |De!ti
}pbBo2
^2C0oX
COBOL XRClBTKF
IDENTIFICATION DIVISION. IlcNT_
5a8
PROGRAM-ID. HELLO-WORLD. Pd)K^;em
z\xiACIc
ENVIRONMENT DIVISION. +9F^F>mu
NFrNm'v
DATA DIVISION. om XBnzT
)j{WeG7L
PROCEDURE DIVISION. %bCcsdK
DISPLAY "Hello, world!". 83{x"G3>
STOP RUN. 'LJ %.DJ
qf_hb
+io;K]C
Common Lisp
YRg=yVo2
(format t "Hello world!~%") V}vl2o
%GVEY
+^/Nil
DOS批处理 R88(dEK
@echo off :5TXA
echo "Hello, world!" 0ClX
uAW*5 `[
?)Tz'9l
Eiffel ?l)}E
class HELLO_WORLD ^Nd|+}
dH
^b)G4
creation 1<XiD3H;
make kA7~Yu5|
feature c%q}"Y0oh
make is ir9Q##f
local pb=jvK
io:BASIC_IO <Cf7E
do &(5^vw<0
!!io 5W?yj>JR
io.put_string("%N Hello, world!") g28S3 '2
end -- make 8L]gQ g
end -- class HELLO_WORLD 5QqJI#4~
aX>4Tw
?)A]q'
O
Erlang x:f|3"\s
-module(hello). G=r(SJq
-export([hello_world/0]). Gk{
"O%AE
4
+da
hello_world() -> io:fwrite("Hello, World!\n"). t-v^-#
LV}UBao5n
OhSt6&+
Forth |% M{kA-
." Hello, world!" CR ^yn[QWFO
'0'"k2"vC
\j,v/C@c-
Fortran 0Zc*YdH
WRITE(*,10) v`z=OHc
10 FORMAT('Hello, World!') z4%Z6Y
STOP 1A|x$j6m
END afxj[;p!
zxk??0]/
j6&zRFX
HTML G/LXUhuif
<HTML> hO+O0=$}wN
<HEAD> Q9Y9{T
<TITLE> Hello World! </TITLE> MFc=B`/X
</HEAD> *3w/`R<\
<BODY> z/eU^2V
<p>Hello World!</p> FT|/WZR
</BODY> pO-s@"j]
</HTML> eHF(,JI
~>Hnf_pZO
C }h<ldlY
HQ9+ #`N6<nb
H [[*0MA2Y
buq *abON
4%',scn
INTERCAL ;JPbBwm
PLEASE DO ,1 <- #13 Lyf? V(S
DO ,1 SUB #1 <- #238 =`7#^7Q9
DO ,1 SUB #2 <- #112 J{GFb
DO ,1 SUB #3 <- #112 Ovl?j&8
DO ,1 SUB #4 <- #0 )$gsU@H -
DO ,1 SUB #5 <- #64 +(I`@5
DO ,1 SUB #6 <- #238 giPhW>
DO ,1 SUB #7 <- #26 a0V8L+v(
DO ,1 SUB #8 <- #248 DWm;&RPJ
DO ,1 SUB #9 <- #168 <tu[cA>
DO ,1 SUB #10 <- #24 H}jK3;8E
DO ,1 SUB #11 <- #16 /VhE<}OtH
DO ,1 SUB #12 <- #158 i-i}`oN
DO ,1 SUB #13 <- #52 dCoi>PO
PLEASE READ OUT ,1 # o;CmB
PLEASE GIVE UP 1,%#O;ya
={mPg+Ei'
OIXAjU*N
Java m>Z\
rqOK
public class Hello JEm?26n X
{ ^;Hi/KvM\
public static void main(String[] args) +}`O^#<qLX
{ /C,>
System.out.println("Hello, world!"); ERX|cc
} }(g+: ]p-
} lkSz7dr@
DiYJlD&
}]39
iK`w
JSP jnU*l\,
<% z2s|.M]&-D
out.print("Hello, world!"); ok\/5oz
%> }VGI Y>v
a'>$88tl
bWC~Hv
MIXAL jy__Y=1}
TERM EQU 19 the MIX console device number rmg";(I
ORIG 1000 start address %<ptkZK#
START OUT MSG(TERM) output data at address MSG $5Y^fwIK
HLT halt execution hPqapz]HcP
MSG ALF "MIXAL" 1<qVN'[
ALF " HELL" .X<"pd*@e
ALF "O WOR" 0LHiOav
ALF "LD " RESGI}u
END START end of the program "13
:VTs[5
s:jL/%+COZ
O275AxaN
Nuva YnO1Lf@
<..直接输出..> `~aLSpB65
Hello, world! U+RCQTo
uZ2v;]\Y6
<..或者..> s=y9!rr
Eip~~2
<. sNk>0 X[
// 不带换行 \")YKN=W
? "Hello, world!" wkZ2Y-#='
1z};"A
// 或者 WJFTy+bD
C1Pt3
// 带换行 `.sIZku
?? 'Hello, world!' [@. jL0>
.> .k:&&sAz
{z[HNSyRs
O'& \-j 1
OCaml 1(;33),P8
let main () = YI),q.3X~
print_endline "Hello world!";; l&^[cR
_7j/[
4Utx
9^
Pascal _qzo):G.s
program Hello; n xh/&%
begin &A5[C{x
writeln('Hello, world!'); xX4^nem\G
end. m1$P3tZPn
D16;6K'{
TaHi+
Perl ~tj7zI6
#!/usr/local/bin/perl P2:Q+j:PX
print "Hello, world!\n"; X"khuyT_
8JFkeU%yO
IO)Ft
PHP +!V%Q
<?php ]MA)='~
print("Hello, world!"); f+*2K^B
?> O"-PNF,J
x]J-q5
&\]f!'jV
Pike lSbM)gL
#!/usr/local/bin/pike zQ|x>3
int main() ^nm!NL{z^
{ Boj{+rE0
write("Hello, world!\n"); &qI5*aQ8T
return 0; o Jp_c
} mlw BATi
K~ /V
xo_k"'f+
PL/I UUEDCtF)
Test: procedure options(main); cCbr-Z&
declare My_String char(20) varying initialize('Hello, world!'); cp?P@-
put skip list(My_String); z?_}+
end Test; 0_zSQn9c
qF6%XKbh=
=cKk3kJC
Prolog C<=p"pWw
goal NCM{OAjS5U
write("hello,world!"). !zJ67-G
];}|h|q/{}
0JRBNh
Python dSOn\+
#!/usr/local/bin/python S+xGHi)
print "Hello, world!" ?
A#z~;X@
Gc!{%x
L2O57rT2
REXX 4aGpKvW
say "Hello, world!" rHdP4: n
WI4_4
|Gs-9+'y
Ruby 2?nyPqT3AM
#!/usr/bin/ruby {}C7VS1
print "Hello, world!\n" -Jrc'e4K
yrYaKh
,v5>sL
Scheme &+{xR79+&
(display "Hello, world!") `IRT w"
(newline) ?&nz
L#@$Mtc
w>UV\`x
sed (需要至少一行输入) dZYJ(7%
sed -ne '1s/.*/Hello, world!/p' ^Jpd9KK
Oc+L^}elJ
4_:e+ ql
Smalltalk td$6:)
Transcript show: 'Hello, world!' Cv7RCjMw
r$eL-jQmn
|w]i$`3'I
SNOBOL &ziB#(&:H
OUTPUT = "Hello, world!" knZd}?I*
END p;Ok.cXVp
M 6Z`Pwv];
acZ|H
SQL 95&sFT
C
create table MESSAGE (TEXT char(15)); J
2~B<=V
insert into MESSAGE (TEXT) values ('Hello, world!'); l+X^x%EA
select TEXT from MESSAGE; pR7G/]U$A
drop table MESSAGE; ct/THq
Z$K%@q,10+
"Ksd9,J\b
Tcl !m5\w>
#!/usr/local/bin/tcl =|zLr"
puts "Hello, world!" o@~gg*
}4`YdN
TEyPlSGG
TScript evk
<<zi
? "Hello, world!" {73DnC~N
;.m[&h 0
n,%^R
Turing -xEg"dY/
put "Hello, world!" mYRR==iDL
r~a}B.pj
[/^g) ^s:
UNIX-style shell #!j&L6
程序中的/bin/sh可改为您使用的shell sJYX[
jo:p*Q"F
#!/bin/sh 1@@]h!>k:
echo 'Hello, world!' ~;a* Oxt
NPq2C8:
~i {)J
GUI 5S?Xl|8E
Ek\Zi#f<
Delphi w5R9\<3L
program HelloWorld; YWd(xm"4
uses ECfY~qK
Dialogs; Ok"wec+,
begin 9uo\&,,
ShowMessage('Hello, World!'); 8u23@?
end. ]qQB+]WN
Fd0FG A&L
,FPgs0rrS
Nuva cW>`Z:6{K
<. ~$Yuxo
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) p`C5jfI
.> 05DtU!3O
7P(:!ce4-
1O{67Pf
Visual Basic R|yTUGY
MsgBox "Hello, world!" HM
x9M$
'或者 /;[')RO`
Print "Hello, world!" !2,.C+,
3c"{Wu-}
u(qpdG||7
Visual FoxPro Y*Rqgpu
$
? "Hello, world!" hD=D5LYAZ
8 F 1ga15
!"">'}E1
X11 *V+fRN4 W
用一个程序 '/@VG_9L]
|1$X`|S
xmessage 'Hello, world!' BW1O1zIh\
v7RDoO]I
用C++和gtkmm 2 TR;-xst@
<]J5AdJ
#include <iostream> [:Y^0[2
#include <gtkmm/main.h> ijT^gsLL
#include <gtkmm/button.h> ?/ g(Y
#include <gtkmm/window.h> R2gax;
using namespace std; m{" zFD/
06r cW `
class HelloWorld : public Gtk::Window IrK )N
{ ENr&k(>0HQ
public: JD.z}2+
HelloWorld(); kSrzIq<xre
virtual ~HelloWorld(); @:8|tJu8b
protected: ^B>6!
Gtk::Button m_button; L.(k8eX
virtual void on_button_clicked(); Z$gY}Bz
}; P#]jPW
AUd}) UR
HelloWorld::HelloWorld() : m_button("Hello, world!") =^{+h>#s@
{ {M5IJt"{4b
set_border_width(10); dzap]RpB
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); ^8*.r+7p
add(m_button); P=GM7
m_button.show(); g [K8G
} EJsb{$u
""=Vt]
HelloWorld::~HelloWorld() {} #Ki@=*
fNumY|%3
void HelloWorld::on_button_clicked() MDZb|1.AT
{ MiI7s;
cout << "Hello, world!" << endl; UHwrssX&3
} $$w 1%#F=
NjLd-v"2
int main (int argc, char *argv[]) ^YV[1~O
{ <XU]%}o
Gtk::Main kit(argc, argv); "O{sdVS
HelloWorld helloworld; <7+.5iB3
Gtk::Main::run(helloworld); ewR0e.g
} jA'+>`@
sP#5l @
*HUqW}_r
Java B:SRHd{*Wu
import java.awt.*; *&km5@*
import java.awt.event.*; iQQJ`
q^)(p'
X
public class HelloFrame extends Frame Spb'jAKj'
{ #';r 0?|
HelloFrame(String title) Tbw8#[6AX
{ 6kk(FVX
super(title); Y2fs$emv
} A}o1I1+
public void paint(Graphics g) "=)`*"rr
{ >jm9x1+C
super.paint(g); qIl@,8T
java.awt.Insets ins = this.getInsets(); n$8A"'.M
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); %vI]"a@
} TOs|f8ay
public static void main(String args []) #N:o)I
{ +a{>jzR
HelloFrame fr = new HelloFrame("Hello"); pbNVj~#6
4-AmzU
fr.addWindowListener( Qoc-ZC"<6
new WindowAdapter() TqC"lO>:Q
{ ;3_'{
public void windowClosing(WindowEvent e) "lm3o(Dk
{ (<