“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。 ^ib
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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》。 Q*hXFayx
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以下是用不同语言写成的Hello World程序的几个例子: @qSZ=
Ada /E!N:g<
with Ada.Text_Io; use Ada.Text_Io; 7h.fT`
procedure Hello is J@OK"%12
begin q8!]x-5$6j
Put_Line ("Hello, world!"); YkbuyUui
end Hello; p<<dj%
#;=sJ[m4
Tol"D2cyf
汇编语言 ~RH)iI
cua ( w
x86 CPU,DOS,TASM Ciy%7_~\
MODEL SMALL q+} \(|
IDEAL \&l@rMD3s
STACK 100H B3<sSe8L0
~e&O?X
DATASEG 4peRbm
HW DB 'Hello, world!$' /Pxny3
`2/V.REX$h
CODESEG yJ="dEn>i"
MOV AX, @data dZo x;_b
MOV DS, AX [FZq'E"87
MOV DX, OFFSET HW TPs
]n7]:
MOV AH, 09H ,M~> t7+
INT 21H _'4S1
MOV AX, 4C00H phQ{<wzwp
INT 21H s\< @v7A
END kE :{#>[Uz
OIIA^QyV
J0imWluhQ
x86 CPU,GNU/Linux,NASM I1#MS4;$^
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 6FN#X g
;Enter this into "hello.asm" then type: DJ9x?SL@KD
;"nasm -f elf hello.asm" A+j!VM
;"ld hello.o -o hello" PuhvJHT
;"./hello" Z6-ZAS(>m
I9dX\w}
section .data ;data section declaration =ym<yI<
msg db 'Hello World!',0AH vOLa.%X]h
len equ $-msg ;string length GKKDO+A=!
?\kuP ?\
section .text ;code section declaration U^eos;:s8
global _start ;entry point (start of execution) &KY!a0s
_start: mov edx,len ;string length rP}[>
mov ecx,msg ;string start i5=~tS
mov ebx,1 ;file handle: stdout $fBj}\o
mov eax,4 ;sys_write M~n./wyC
int 80h ;kernel system call 1rS8+!9C
[k0/ZfFwV
mov ebx,0 ;return value vvu $8n
mov eax,1 ;sys_exit tLxeq?Oo]
int 80h ;kernel system call Wffz&pR8
&E1m{gB(
_''un3eCY
x86 CPU,Windows,MASM32 `H 'wz7
.386 ^KnK
\
.model flat,stdcall BOh^oQh
option casemap:none B[q"oI`
;Include 文件定义 Sfa=AV7K
include windows.inc 1*|/N}g)
include user32.inc )Ay 90Wt
includelib user32.lib .lq83;
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include kernel32.inc &r,)4q+
includelib kernel32.lib IA{W-RRb
;数据段 6B*#D.fd*
.data |fIyq}{7
szCaption db 'A MessageBox!',0 f$ tm<:)Y
szText db 'Hello,world!',0 T:Ovh.$
;代码段 mYj)![
.code GwfC l{l
start: +KD7Di91<K
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ;4(}e{
invoke ExitProcess,NULL x7Gf):,LK
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ktS^^!,l%
end start :`Ep#[Wvo
d S'J @e=#
z{FFTb^B
AWK 2Y<]X7Ch:
BEGIN { print "Hello, world!" } FE]UqB
rlA/eQrS
1D38T
BASIC Mi{ns $B%
传统版BASIC(例如GWBASIC): ?3 k_YN"
5@-H8*
10 PRINT "Hello, world!" Yufjy=!
20 END [3I|MZ
c/ih%xR
或在提示符输入: h5pfmN\-5
rmo\UCD
?"Hello, world!":END dGi
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现代版BASIC(例如Quick BASIC): (Li0*wRb
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Print "Hello, world!" Wy*+8~@A
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以下的语句在Quick BASIC中同样有效: qv}ECQ
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? "Hello,world!" N_S~&(I|
_ziSH 3(
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BCPL 8e3eQ
GET "LIBHDR" K!.t}s.t
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LET START () BE l)dE7$H
$( AWYlhH4c?t
WRITES ("Hello, world!*N") >;'0ymG.`
$) SOOJq C
Je6wio-4
jU7[z$GX
Befunge * Ogf6
"!dlrow olleH">v *U]&a^N
, xY#J((-iH
^_@ (3lA0e`Y
11YJW-V
oI[rxr
Brainfuck [U8/nT
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< -egnMc67
+++++++++++++++.>.+++.------.--------.>+.>. DyCzRkH
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C 86N,04
#include <stdio.h> fZ5 UFq_~s
k&%i+5X
int main(void) IQ~qiFCf
{ 9#@s(s
printf("Hello, world!\n"); bT&{8a
return 0; ` =P_ed%&'
} R:YVmqd
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BZHoRd{EH
C++ Zfcf?&><
#include <iostream> i9XpP(mf
Z#-N$%^F
int main() kx?Yin8K
{ MO0NNVVi%U
std::cout << "Hello, world!" << std::endl; `D
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return 0; 77yYdil^W+
} b<~-s sL7a
bTmhz
!?0C(VL(:
C++/CLI ;'8Wl
int main() =>`zk^
{ 'JJKnE zQ
System::Console::WriteLine("Hello, world!"); NRJp8G Z%U
} DE?k|Get2
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1' U
C# (C Sharp) *
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class HelloWorldApp *oz#YGNm
{ XLCqB|8`V
public static void Main() Z>bNU
{ 1x;@BV
System.Console.WriteLine("Hello, world!"); Ca5#'3Eh
} ZxSFElDD]E
} <tFq^qB
(,#m+
=<3HOOC
COBOL b7dsi|Yo
IDENTIFICATION DIVISION. )Bn
}|6`
PROGRAM-ID. HELLO-WORLD. k}H7bZug
gM>?w{!LBx
ENVIRONMENT DIVISION. '~K]=JP
{qi#
DATA DIVISION. _7Y-gy#\a
P@ew' JL%
PROCEDURE DIVISION. 'QG`^@Z
DISPLAY "Hello, world!". *)-@'{]u B
STOP RUN. 5%WAnh
&d2L9kTk
}bca-|N
Common Lisp )5~T%_
(format t "Hello world!~%") YR-G:-(#b
h`\$8oV
UHvA43
DOS批处理 I<D7Jj
@echo off vLHn4>J,R
echo "Hello, world!" qS@3:R
tm.60udbo
6`Tx meIP
Eiffel 3=sBe HL
class HELLO_WORLD 3`%E;?2
%'s_=r`
creation xw}yl4WT{
make .Ji9j[[#D
feature hZ*vk
make is tt?`,G.(]
local 2}pZyS
io:BASIC_IO BYEZ[cM
do 1bQO:n):~
!!io c.Sd~k:3
io.put_string("%N Hello, world!") |YROxY"ML
end -- make L7buY(F(
end -- class HELLO_WORLD 6CHb\k
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1gkpK`u(B
Erlang 4bA^Gq
-module(hello). \XV8t|*
-export([hello_world/0]). /Q(boY{
%AA&n*m
hello_world() -> io:fwrite("Hello, World!\n"). ]b%U9hmL^f
}W}( k2r
l $\2|D
Forth fm-m?=
." Hello, world!" CR IxCesh
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igA?E56?
Fortran dB6,pY(
WRITE(*,10) u'#/vT#l
10 FORMAT('Hello, World!') ;K\2/"$QD
STOP }WIkNG4{Z
END yPtE5"(o
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XN Uw
HTML
i,<'AL )
<HTML> Itr4Pr
<HEAD> =hvPq@C%
<TITLE> Hello World! </TITLE> 9n\>Yieu
</HEAD> gjG SI'M0B
<BODY> 07:V[@'
<p>Hello World!</p> ~M^[
</BODY> L5x;#\#p
</HTML> WyatHC
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N
Nk
HQ9+ *Igb3xK%
H qA!p7"m|
OJa(Gds
P1rjF:x[*
INTERCAL o{#aF=`{
PLEASE DO ,1 <- #13 ?V!5VHa
DO ,1 SUB #1 <- #238 zw15r" R
DO ,1 SUB #2 <- #112 '4i8&p`/
DO ,1 SUB #3 <- #112 v%cCJ SO#
DO ,1 SUB #4 <- #0 lM4 Z7mT /
DO ,1 SUB #5 <- #64
%p
DO ,1 SUB #6 <- #238 63l&
ihj
DO ,1 SUB #7 <- #26 f4P({V
DO ,1 SUB #8 <- #248 ^zV_vB)n
DO ,1 SUB #9 <- #168 C\5G43`
DO ,1 SUB #10 <- #24 hJ`Gu7
DO ,1 SUB #11 <- #16 */IiL%g4u
DO ,1 SUB #12 <- #158 /_m)D;!y
DO ,1 SUB #13 <- #52 &^#iS<s1
PLEASE READ OUT ,1 (o B4*
PLEASE GIVE UP S=)
c7t?a
*1["x;A
a r8iuwfZ
Java gyAJ#N|
public class Hello q}L`8(a
{ 5xdeuBEY8
public static void main(String[] args) ?lD)J?j
{ ;&CLb`<y
System.out.println("Hello, world!"); g?"QahHG
} $k0(iFzR1
} H;\C7w|
j8Z;}Ps
K\9CW%W
JSP a-|pSe*rx
<% k/{WlLN
out.print("Hello, world!"); *t| !xO
%> gC2}?nq*
IXtG
36O
8Y`g$2SZ^8
MIXAL -)(=~|,Pq/
TERM EQU 19 the MIX console device number ~|S0E:*.
ORIG 1000 start address (CIcM3|9C
START OUT MSG(TERM) output data at address MSG G-)e(u
HLT halt execution K0(
S%v|,}
MSG ALF "MIXAL" iS+"Jsz
ALF " HELL" .kFO@:
ALF "O WOR" [(x<2MTj
ALF "LD " CBf[$[e
END START end of the program .5a>!B.I
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LXX('d
Nuva HJ]v-
<..直接输出..> $]_SPu
Hello, world! rwXpB<@l@
,L-/7}"VHA
<..或者..> #T8o+tv
7uc\AhOk6
<. KX9IC5pR
// 不带换行 7mYcO3{5{
? "Hello, world!" j
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-(?/95 Y
// 或者 P
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w~v6=^
// 带换行 rZdOU?U
?? 'Hello, world!' })^eaLBR4
.> xS_;p9{E
' F.^ 8/>
lfDd%.:q4S
OCaml _1E c54D
let main () = 13F]7l-#
print_endline "Hello world!";; @Nsn0-B?ne
(n7xYGfYS
^
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Pascal *:TwO=)
program Hello; `ZEFH7P
begin ;]1t|td8
writeln('Hello, world!'); c6vJ;iz
end. }nPt[77U_7
C8|Ls(4Ck
+
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Perl zGU MH7 M
#!/usr/local/bin/perl ?:9y
!Q=
print "Hello, world!\n"; iT==aJ=~/&
V WZpEi
kbb!2`F!%
PHP 95#]6*#[4!
<?php J8S$YRZ_
print("Hello, world!"); ;&J>a8B$
?> >xo<i8<Miv
1 jB0gNe
:Y /aT[
Pike u~uz=Yse
#!/usr/local/bin/pike GYQ:G=
int main() A@<
! '
{ #1$4<o#M
write("Hello, world!\n"); M5:.\0_
return 0; 3Ed
} ?P[:,0_
@>46.V{P}B
6w &<j&V
PL/I xwsl$Rj
Test: procedure options(main); agwbjkU/
declare My_String char(20) varying initialize('Hello, world!'); 7WmLC
put skip list(My_String); fpQFNV
end Test; wT!?.Y)aj
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E va&/o?P|
Prolog wry`2_c
goal m,+PYq
write("hello,world!"). 9J7yR}2-F
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Td|,3
n
Python BEb?jRMjLg
#!/usr/local/bin/python Xxh^4vKjX
print "Hello, world!" Awfd0L;9
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Pq+|*Y<|&
REXX X~VI} dJ
say "Hello, world!" HqV55o5f'
PH%t#a!j3/
*c4OhMU(
Ruby p9i7<X2&
#!/usr/bin/ruby no-";{c
print "Hello, world!\n" 6
DQOar>d
Cu%BU}(
4qDO(YWf
Scheme e}2?)B`[
(display "Hello, world!") A7YCSjB
(newline) N:3=G`Ws
Pn^:cr|
y]{b4e
sed (需要至少一行输入) ?yAb=zI1b
sed -ne '1s/.*/Hello, world!/p' e:-pqZT`
K3:z5j.X
]~
N.
Smalltalk Nk-xnTZ"
Transcript show: 'Hello, world!' 8t=H
JzywSQ
}*!L~B!
SNOBOL <FkaH8,7
OUTPUT = "Hello, world!" n5~Dxk
END 5u9 lKno
Vr1r2G2
m
%+'St|qr
SQL qh>An;:u
create table MESSAGE (TEXT char(15)); 4IZAJqw(*
insert into MESSAGE (TEXT) values ('Hello, world!'); _s#J\!F
select TEXT from MESSAGE; WVQHb3Pe0
drop table MESSAGE; 7n .A QII
A
,0}bFK
Hvz;[!
Tcl %fld<O
#!/usr/local/bin/tcl _gK}Gi?|
puts "Hello, world!" ZJbaioc\
-{*3<2rFK
]+ub
R;
TScript 1^NC=IS9z
? "Hello, world!" 6%t6u3
g,YF$:e
BPW.&2?<
Turing V+sZ;$
put "Hello, world!" nO6UlY
2va[= >_
p?Ux1S
UNIX-style shell qYe`</
程序中的/bin/sh可改为您使用的shell .DwiIr'
j#c@dze
#!/bin/sh =\8 x
echo 'Hello, world!' M1P;x._n
p\~ a=
A#q.)8
GUI lu>G=uCJ
R+0fs$su
Delphi W)Y-^i5
program HelloWorld; #('R`~
uses 8yI4=P"F,
Dialogs; 6&