“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。 =A,6KY=E
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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》。 u-a* fT
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以下是用不同语言写成的Hello World程序的几个例子: T*%Q s&x;
Ada A:3:Cr
with Ada.Text_Io; use Ada.Text_Io; y0R5YCq\":
procedure Hello is x]gf3Tc58
begin EfR3$sp
Put_Line ("Hello, world!"); K)AJx"
end Hello; Q`dzn=
cb k|LQ.O
?
D?XaRb
汇编语言
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JZ5NQ)sX
x86 CPU,DOS,TASM "@JSF
MODEL SMALL |X6]#&g7
IDEAL VHJ-v!
STACK 100H #O<2wMb2<
s4RqMO5eI
DATASEG ^uu)|
HW DB 'Hello, world!$' `&"-|
:Qg3B ';
CODESEG 0"~`U.k~M
MOV AX, @data g$\Z-!(
MOV DS, AX ,rB"ag !
MOV DX, OFFSET HW R~$W
MOV AH, 09H fJ3*'(
INT 21H ?=%Q$|]-
MOV AX, 4C00H <MlRy%3Z
INT 21H |d* K'+
END 'Lw4jq
z@nJ-*'U8
pm-SDp>s
x86 CPU,GNU/Linux,NASM Zjz< Q-
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). do2~LmeW
;Enter this into "hello.asm" then type: N|v3a>;*l
;"nasm -f elf hello.asm" n_Ht{2I
;"ld hello.o -o hello" 2[W1EQI
;"./hello" 5y. n
Ri@`sc{n
section .data ;data section declaration G &'eP
msg db 'Hello World!',0AH Xi]WDH \
len equ $-msg ;string length i>n.r_!E
s^X(G!V{c
section .text ;code section declaration ?G[<~J3-E
global _start ;entry point (start of execution) @?A39G{
_start: mov edx,len ;string length f3>8ZB4
mov ecx,msg ;string start @iZ"I i&+
mov ebx,1 ;file handle: stdout Cz2OGM*mz?
mov eax,4 ;sys_write ?d*0-mhQ,
int 80h ;kernel system call GUJaeFe
8:%=@p>$
mov ebx,0 ;return value ?qeBgkL(B^
mov eax,1 ;sys_exit KKR@u(+"a
int 80h ;kernel system call km;M!}D
ps#+i
&R54?u^A
x86 CPU,Windows,MASM32 s6(iiB%d
.386 D{&0r.2F
.model flat,stdcall JfmNI~%
option casemap:none -uDB#?q:W
;Include 文件定义 E$-u:Z<-
include windows.inc !$"DD[~\
include user32.inc 'E2\e!U/
includelib user32.lib e Ir|%
include kernel32.inc W|K"0ab
includelib kernel32.lib }s_'q~R
;数据段 1nv#Ehorg
.data mJ=3faM
szCaption db 'A MessageBox!',0 yv:8=.r}M
szText db 'Hello,world!',0 ffuV158a&
;代码段 PQ`p:=~>:i
.code VZ?"yUZ Id
start: oyGO!j
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 3"O)"/"Q.
invoke ExitProcess,NULL W?;kMGW-
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> (nk)'ur.
end start D-7PO3F:F
*x EcX6ZHX
93="sS
AWK &UhI1mi]h
BEGIN { print "Hello, world!" } @J~n$^ke
o2
=UUD&
'iM;e K
BASIC L lmdydC%
传统版BASIC(例如GWBASIC): gU7@}P
Ca[H<nyj
10 PRINT "Hello, world!" >E;-asD
20 END 4Gl0h'!(
\Kph?l9Ww
或在提示符输入: bkQEfx.
Vy;f 4;I{
?"Hello, world!":END <MgR
x9
2 %YtMkC5
现代版BASIC(例如Quick BASIC): >uS?Nz5/
bi:m;R
Print "Hello, world!" adG=L9
"n
nezdk=8J/
以下的语句在Quick BASIC中同样有效: vEJ2d&
R;9H`L/>
? "Hello,world!" hlPZTr=a
9Foo8e
)D
^.{70N
BCPL XeD9RMT
GET "LIBHDR" q2* G86
@1#QbNp#
LET START () BE jseyT#2
$( ! 6kLL
WRITES ("Hello, world!*N")
y{hy
$) +{V"a<D$m
Nf0'>`/
0GR\iw$[J
Befunge Mg
H,"G
"!dlrow olleH">v (?SK< 4!
, `8Y& KVhu
^_@ +*2wGAT
o9)pOwk7;
gxEa?QH
Brainfuck -!uut7Z|
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< CmaV>
+++++++++++++++.>.+++.------.--------.>+.>. ]:CU.M1
2|vArRKt
>}#h
C &61;v@
#include <stdio.h> BU[.P]
BJI}gm2y
int main(void) ?CB*MWjd
{ mzufl:-=
printf("Hello, world!\n"); *')g}2iB
return 0; %Z@+K_X9x
} /+\m7IS
*I;,|Jj k
6Z~u2&
C++ vn"2"hPF|
#include <iostream> 8spoDb.S
2@``=0z
int main() =M"H~;f]
{ iB[>uW
std::cout << "Hello, world!" << std::endl; tlw$/tMa
return 0; >
Y
<in/
}
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QJc3@
TJ@@kSSbl
C++/CLI ZhqrN]x
int main() rzJNHf=FVY
{ =5NrkCk#V
System::Console::WriteLine("Hello, world!"); @OOnO+g
} 7n*,L5%?]4
=[8EQdR
`Tt}:9/3
C# (C Sharp) :'aT4
class HelloWorldApp iOpMU
{ jEj#|w
public static void Main() )X{ x\
/N
{ %u\Oj \8U
System.Console.WriteLine("Hello, world!"); T9r"vw
} :[:5^R
}
7;dTQ.%n
y9d[-j
;w
%,$Ms?,n`
COBOL t3ua5xw
IDENTIFICATION DIVISION. |;2Y|>=
PROGRAM-ID. HELLO-WORLD. $mvcqn;
-<kl d+
ENVIRONMENT DIVISION. 2Y_ `&
VuqN)CE^Uq
DATA DIVISION. OU;R;=/]
O$jj&
PROCEDURE DIVISION. /C(lQs*l
DISPLAY "Hello, world!". zoXCMBg[
STOP RUN. h&eu}aF
!@mV$nTA
%M{qr!?uj
Common Lisp z -|gw.y
(format t "Hello world!~%") jR-`ee}y2
sBP.P7u
m(QGP\Ya
DOS批处理 :0,q>w
@echo off ( zQ)EHRD
echo "Hello, world!" UpL1C~&
}X{#=*$GQ
x2p}0N
Eiffel 7'wt/9
class HELLO_WORLD hn9'M!*:O
w~J 7|8Y
creation IXb]\ )
make } ).rD
feature mG4myQ?$
make is ,at"Q$)T
local n<
UuVu
io:BASIC_IO 5wM*(H^c[
do Uc,D&Og
!!io 6^U8Utx
io.put_string("%N Hello, world!") _DPWp,k<~
end -- make 0r?975@A
end -- class HELLO_WORLD Oo'IeXQ9(
zbH Nj(~
q)%F#g
Erlang JmDi{B?
-module(hello). j^ L"l;m
-export([hello_world/0]). MhMY"bx8
E$5)]<p! <
hello_world() -> io:fwrite("Hello, World!\n"). dQ6:c7hp>D
|J:n'}
4;anoqiG\
Forth M@$}Og
." Hello, world!" CR Il(p!l<Xz#
om%L>zfB
);T0n
Fortran pME17 af
WRITE(*,10) ,|hM`<"?
10 FORMAT('Hello, World!') y]|Hrx
STOP r[xj,eIb
END <<#-IsT
_'9("m V
[fF0Qa-
HTML =O= 0 D
<HTML> :s8^nEK
<HEAD> oej5bAi
<TITLE> Hello World! </TITLE> \lj.vzD-A
</HEAD> MfNxd
6w
<BODY> V1Yab#
<p>Hello World!</p> VC%{qal;q
</BODY> ~R7F[R
</HTML> SMHQo/c r
oRl~x^[%[-
[JAHPy=+w
HQ9+ nY(>|!
H eF]`?AeWQ
P{YUW~
Vfkm{*t)
INTERCAL H#pl&/+
PLEASE DO ,1 <- #13 g)7~vm2/,
DO ,1 SUB #1 <- #238 3vx5dUgl,
DO ,1 SUB #2 <- #112 )?35!s6
DO ,1 SUB #3 <- #112 AF ,*bb
DO ,1 SUB #4 <- #0 Rf *we+
DO ,1 SUB #5 <- #64 RTN?[`
DO ,1 SUB #6 <- #238 cM&5SyxiuE
DO ,1 SUB #7 <- #26 ~JjL411pG
DO ,1 SUB #8 <- #248 2'O2n]{
DO ,1 SUB #9 <- #168 E`#m0Q(8
DO ,1 SUB #10 <- #24 RL Beti>
DO ,1 SUB #11 <- #16 Z05kn{<a8
DO ,1 SUB #12 <- #158 <9zzjgzG{c
DO ,1 SUB #13 <- #52
*&$J.KM
PLEASE READ OUT ,1 %UIR GI
PLEASE GIVE UP ~)!yl. H
~)5NX
4Po
p,_,o3@~
Java 2tz%A~}4
public class Hello p;;4b@
{ WXJEAje
public static void main(String[] args) Lhg4fuos@)
{ ckR>ps[ u
System.out.println("Hello, world!"); 0$RZ~
} }xZR`xP(
} j\W"P_ dpd
e/+_tC$@p@
Z>=IP-,>
JSP 1'.SHY|
<% sVdn>$KXk
out.print("Hello, world!"); 0,~f"Dyqy
%> 5^kLNNum
$~x#Q?-y
!,D7L6N
MIXAL a%\6L
TERM EQU 19 the MIX console device number !O;su~7
ORIG 1000 start address Q;9-aZ.H
START OUT MSG(TERM) output data at address MSG C\%T|ZDE
HLT halt execution [bE-Uu7q5P
MSG ALF "MIXAL" B4tC3r
ALF " HELL" F"p7&e\W|l
ALF "O WOR" JQ5E; 8J>
ALF "LD " CC{*'p6
END START end of the program N=Q<mj;,
9f UD68Nob
b02V#m;Z
Nuva D~~"wos
<..直接输出..> I,[njlO:
Hello, world! ;/ wl.'GA
X<:B"rPuK
<..或者..> N, `q1B
@zu IR0Gr)
<. TcW-pY<N
// 不带换行 91I6-7# Xt
? "Hello, world!" Vq8 G( <77
U.XvS''E
// 或者 G
=`-w
k2bjBAT
// 带换行 O|Sbe%[*wW
?? 'Hello, world!' r"E%U:y3P
.> ALcin))+B
+0,'B5 (E
UCu0Xqf
OCaml '3%J hG)#
let main () = 1omjP`]|,
print_endline "Hello world!";; TJYup%q
rcq^mPdQ
}j+Af["W?
Pascal EY$Dtb+g8
program Hello; pm2-F]
begin QoLp$1O(y
writeln('Hello, world!'); ?L K
n
end. B#Q` !B4v
ar&j1""
C~e&J&zh
Perl _#\e5bE=Z
#!/usr/local/bin/perl fyt ODsb>
print "Hello, world!\n"; n>t&l8g%g
ni2GZ<1j
q fc:%ks2
PHP ye<b`bL2.
<?php GtuA94=!V&
print("Hello, world!"); `!Z0;qk
?> P}`|8b1W
PL/g@a^tY
&7\=Jw7w
Pike
h.Y&_=Gc
#!/usr/local/bin/pike ddTsR
int main() lF[m*}l
{ D=+md
write("Hello, world!\n"); nrBpq
return 0; }Z/[ "
} uOQ!av2"Rf
G_m $?0\
]!c59%f=
PL/I r5RUgt
Test: procedure options(main); J#>)+
declare My_String char(20) varying initialize('Hello, world!'); a/\SPXQ/9
put skip list(My_String); x5w5xw
end Test; &nV/XLpG
lQS(\}N
|?cL>]t
Prolog =l)D$l
goal *&vlfH
write("hello,world!"). 1 5heLnei
._E 6?
=,BDd$e
Python {})d}dEC
#!/usr/local/bin/python 0dTHF})m
print "Hello, world!" qix$ }(P
lGlh/B%
qnu<"$
REXX /IxoS
say "Hello, world!" L[s`8u<_)z
XnwVK
E"O6N.}.
Ruby AZ9;6Df
#!/usr/bin/ruby CL|d>
print "Hello, world!\n" "[QQ(]={
uGmv`R_
<~ Dq8If
Scheme ?v
z[Zi
(display "Hello, world!") BS.5g<E2q
(newline) `<3%`4z/
uIy$|N
~GLWhe-
sed (需要至少一行输入) LULRi#n
sed -ne '1s/.*/Hello, world!/p' (+CNs
+F?}<P_v
Bq5-L}z
Smalltalk 9bQD"%ha=d
Transcript show: 'Hello, world!' <e?1&5 6
4<j7F4
*V`E)maU
SNOBOL en_W4\7^
OUTPUT = "Hello, world!" U!GfDt
END qyKI.X3n*
.rwa=IW
o5E5s9n
SQL GI<3L K\
create table MESSAGE (TEXT char(15)); aD&4C-,1
insert into MESSAGE (TEXT) values ('Hello, world!'); /;5/7Bvj
select TEXT from MESSAGE; oO3X>y{gN
drop table MESSAGE; .iV-Y *3<
~eZ]LW])
Z,~PW#8<&
Tcl h+c9FN
#!/usr/local/bin/tcl i*]$_\yl"
puts "Hello, world!" dEI]|i
r
hcqg94R#_
R0#'t+7^
TScript \>\_OfY1W
? "Hello, world!" Pil_zQ4
!DM GAt\
${ 5E
Turing aKFY&zN?
put "Hello, world!" G@3Jw[t
JLbmh1'
YfstE3BV
UNIX-style shell ~c=F$M^"c
程序中的/bin/sh可改为您使用的shell #Q1
|]
dC/@OV)0#
#!/bin/sh *7w,o?l
echo 'Hello, world!' G+1i~&uV
kXgc'w6EhF
/,yRn31[
GUI Zet80|q
vd[?73:C
Delphi Y<t(m$s
program HelloWorld; hRNnj
uses sd _DG8V
Dialogs; 7.*Mmx~]=
begin &u4;A[-R
ShowMessage('Hello, World!'); #=T^XHjQ
end. #0f6X,3
c
'rn8Jo}
z[qi~&7:v
Nuva O|nLIfT
<. )!lx'>0>
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) pupt__NZ)n
.> pE {yVs
z+K1[1SM
\iA.{,VX
Visual Basic 9DmFa5E
MsgBox "Hello, world!" Yw6uh4
'或者 [NK&s:wMk
Print "Hello, world!" 0}"'A[xE
Db*&'32W
I uC7Hx`z
Visual FoxPro cR=o!2O
? "Hello, world!" cAn_:^
A[`2Mnj
!-m 'diE
X11 &
h\!#X0
用一个程序 IQWoK"B
K8W99:v
xmessage 'Hello, world!' LMNmG]#!
*LEI@
用C++和gtkmm 2 } "&Ye
6!C>J#T
#include <iostream> M0t9`Z9
#include <gtkmm/main.h> #fDM{f0]R
#include <gtkmm/button.h> B%WkM\\!^
#include <gtkmm/window.h> lf\^!E:
using namespace std; ; Kh!OBZFo
nwVW'M]r
class HelloWorld : public Gtk::Window 4>Y*owa4
{ .;)V;!
public: IN,=v+A
HelloWorld(); 9w6 uoM
virtual ~HelloWorld(); k#-%u,t
protected: 2AW*PDncxP
Gtk::Button m_button; {(l,Uhxl""
virtual void on_button_clicked(); GHO6$iM)[
}; <cFj-Ys(T
m86ztP)
HelloWorld::HelloWorld() : m_button("Hello, world!") F#~*j
{ ?1**@E0
set_border_width(10); iikMz|:7U
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); q7pe\~q
add(m_button); M[C)b\
m_button.show(); <b?$-Rx
} x->+wJm@s
}tQ^ch; Q
HelloWorld::~HelloWorld() {} _:%i6c*"
]!uId#OH
void HelloWorld::on_button_clicked() TPYh<p#
{ ?KWo1
cout << "Hello, world!" << endl; @p@b6iLpO
} $$XeCPs0
"8Lv
int main (int argc, char *argv[]) rN,T}M=2
{ L^=G(op*
Gtk::Main kit(argc, argv); <`u_O!h
HelloWorld helloworld; i]Bu7Fuu
Gtk::Main::run(helloworld); F_0@Sh"
} fRHzY?n9;
QQt4pDir>
?XV3Y3
Java F##xVmR~
import java.awt.*; L#S|2L_hC
import java.awt.event.*; NieNfurG%
i7e_~K
public class HelloFrame extends Frame ltKMvGEF
{ 6`X}Z'4.Ox
HelloFrame(String title) i v.G
{ :x3xeVtY
super(title); f@k.4aS
} !="8ok+
public void paint(Graphics g) y&V'GhW!dd
{ bwa*|{R
super.paint(g); >uDC!0)R
java.awt.Insets ins = this.getInsets(); &