“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。 8fl`r~bqZ
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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》。 kqFP)!37
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以下是用不同语言写成的Hello World程序的几个例子: `@`CG[-9
Ada 3kybLOG
with Ada.Text_Io; use Ada.Text_Io; )h7<?@wv&
procedure Hello is e )d`pQ6
begin <g$~1fa
Put_Line ("Hello, world!"); U|jSa,}
end Hello; 4 o Fel.o
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汇编语言 Ff)8Q.m
i<#QW'R (
x86 CPU,DOS,TASM .%xn&3
MODEL SMALL A1O'|7X
IDEAL ,Q
STACK 100H ~E17L]ete
pH9VTM.*
DATASEG EV]1ml k$
HW DB 'Hello, world!$' "&Y`+ 0S8
k>;`FFQU>
CODESEG HiZ*+T.B
MOV AX, @data Q'=x|K#xj
MOV DS, AX nT7%j{e=L
MOV DX, OFFSET HW r>>%2Z-P
MOV AH, 09H T&6l$1J
INT 21H <M+|rD]oc
MOV AX, 4C00H |-:()yxs
INT 21H GS$ifv
END CsGx@\jN
v[1aWv:
!>FYK}c7
x86 CPU,GNU/Linux,NASM >qnko9 V
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). wW>A_{Y
;Enter this into "hello.asm" then type: ;U/&I3dzV
;"nasm -f elf hello.asm" ag [ZW
;"ld hello.o -o hello" */`ki;\A
;"./hello" +r2+X:#~T
]d$8f
section .data ;data section declaration ^aItoJq
msg db 'Hello World!',0AH j()7_
len equ $-msg ;string length (ZUHvvL
oB(?_No7
section .text ;code section declaration ,Vc6Gwm
global _start ;entry point (start of execution) Tp?7_}tRi
_start: mov edx,len ;string length 6m}Ev95
mov ecx,msg ;string start =^M/{51j
mov ebx,1 ;file handle: stdout glO^yZ s
mov eax,4 ;sys_write SW@$ci
int 80h ;kernel system call , qMzWa
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mov ebx,0 ;return value 9+Np4i@
mov eax,1 ;sys_exit Cio
1E-4
int 80h ;kernel system call R@1 xt@?
-*1d!
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x86 CPU,Windows,MASM32 UXJeAE-
.386 &*M!lxDN
.model flat,stdcall "q3ZWNS'w
option casemap:none K@
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;Include 文件定义 (S>C#A=E\
include windows.inc ,0M_Bk"
include user32.inc V(H1q`ao9
includelib user32.lib )}Hpi<5N
include kernel32.inc B-*+r`@Bd
includelib kernel32.lib Vh|*p&
;数据段 ^UP`%egR
.data *7uH-u"5d
szCaption db 'A MessageBox!',0 ZF!h<h&,
szText db 'Hello,world!',0 9 P l
;代码段 p$S*dr
.code NVkV7y X]
start: `KZm0d{H
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK u|\1hLXX
invoke ExitProcess,NULL 3#LlDC_WC
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> %z=le7
end start /CrSu
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p*XANGA
AWK T$8)u'-pa
BEGIN { print "Hello, world!" } (~p<
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; 5*&xz
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BASIC j`{?OYD
传统版BASIC(例如GWBASIC): Y`~Ut:fZ
owVX*&b{
10 PRINT "Hello, world!" L^1NY3=$
20 END aC]$k'71
/2&c$9=1
或在提示符输入: LQ@"Xe]5
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?"Hello, world!":END k
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1I%w?^sm_
现代版BASIC(例如Quick BASIC): /ixp&Z|7
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Print "Hello, world!" NDN7[7E
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以下的语句在Quick BASIC中同样有效: &h}#HS>l
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? "Hello,world!" _P!m%34|
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xVw9v6@`h
BCPL 2R[:]-b
GET "LIBHDR" aS>u,=C
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4j
LET START () BE Kew@&j~
$( j`EXlc~
WRITES ("Hello, world!*N") ))qy;Q,
$) x`mG<Yt
oh4E7yN
vx{}}/B]J
Befunge })'B<vq
"!dlrow olleH">v ,V7nzhA2
, 0j^Kgx
^_@ B`EJb71^Xy
Lc}LGq!
T6'^EZZY
Brainfuck N:^n('U&j
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< kXViWOXU^
+++++++++++++++.>.+++.------.--------.>+.>. EfqX
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[CY9^N
&eJfGt5
C pJ>P[
#include <stdio.h> &j;wCvE4+
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int main(void) 2_>N/Z4T
{ {4l8}w
printf("Hello, world!\n"); _?nL+\'V
return 0; ${DUCud,kY
} \P[Y`LYL
VMZMG$C
sWhZby7
C++ xH ]Ct~md
#include <iostream> )L? P}$+
,Co|-DYf}
int main() !M(xG%M-V
{ [DuttFX^x
std::cout << "Hello, world!" << std::endl; %O;:af"Ja8
return 0; W" scV@HKu
} EAUEQk?9
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7P} W
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C++/CLI ?4YGT
int main() a,,ex i
{ H8=N@l
System::Console::WriteLine("Hello, world!"); IW5,7.
} e1yt9@k,
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,KH#NY]
C# (C Sharp) *;W+>W
class HelloWorldApp I{|O "8
{ U4'#T%*
public static void Main() 6bg
;q(*7
{ { qk1_yP
System.Console.WriteLine("Hello, world!"); sJKI!
} =nHUs1rKn
} Lj({[H7D!
PI {bmZ
}{Pp]*I<A
COBOL ./Xz}<($8
IDENTIFICATION DIVISION. ROI7eU
PROGRAM-ID. HELLO-WORLD. ijv(9mR
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ENVIRONMENT DIVISION. 2DA]i5
RHW]Z
Pr<
DATA DIVISION. AI2)g1m
J0WxR&%a)
PROCEDURE DIVISION. \
#F
DISPLAY "Hello, world!". +Ze}B*0
STOP RUN. hPkp;a #
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,)cM3nu
Common Lisp #\{l"-
(format t "Hello world!~%") E_rI?t^
gT.sjd
b=C*W,Q_#
DOS批处理 zpn9,,~u
@echo off ,>a&"V^k
echo "Hello, world!" fgTg7 m
^e,.
RNk\.}m
Eiffel k t#fMd$
class HELLO_WORLD u[;\y|75
Q-oktRK
creation xK[ou'
make Oi.C(@^(
feature tAd%#:K
make is ,L2ZinU:
local l\H=m3Bg
io:BASIC_IO d0!5j
do >b}o~F^J
!!io 8Al{+gx@?
io.put_string("%N Hello, world!") v4TQX<0s
end -- make -m zIT4
end -- class HELLO_WORLD u{cW:
QT5TE: D
a=_g*OK}D
Erlang o'aEY<mZ7
-module(hello). QE+g
j8
-export([hello_world/0]). 1ba~SHi
5DU6rks%
hello_world() -> io:fwrite("Hello, World!\n"). =j_4S<
%A/0 '
1t~G|zhX
Forth n+9=1Oo"
." Hello, world!" CR *8 A
h+H%?:FX
>h9IM$2
Fortran )AtD}HEv
WRITE(*,10) !?jrf ]
A@
10 FORMAT('Hello, World!') M]
%?>G
STOP _yx>TE2e
END VT)oLj/A
3*XNV
}"H,h)T
HTML R%WCH?B<}
<HTML> r|8d
4
<HEAD> cl3K<'D
<TITLE> Hello World! </TITLE> a.\:T,cP>
</HEAD> 3ZPWze6
<BODY> jRlYU`?
<p>Hello World!</p> 7aRi5
</BODY> p`dU2gV
</HTML> 2 a)xTA#
FX&~\kmV'j
&BLJT9Frx
HQ9+ EJ.SW5
H 76Cl\rV
:S83vE81WK
eKgBy8tNS0
INTERCAL p4rL}Jm&
PLEASE DO ,1 <- #13 ;`4&Rm9n?
DO ,1 SUB #1 <- #238 >2)OiQ`zg
DO ,1 SUB #2 <- #112
DPxM'7
DO ,1 SUB #3 <- #112 r,3DTBe
DO ,1 SUB #4 <- #0 ?3,:-"(@p
DO ,1 SUB #5 <- #64 jOunWv|
DO ,1 SUB #6 <- #238 ZQsJL\x[UK
DO ,1 SUB #7 <- #26 1=c\Rr9]
DO ,1 SUB #8 <- #248 ZU4nc3__
DO ,1 SUB #9 <- #168 ,-c6dS
DO ,1 SUB #10 <- #24 OZF
rtc+
DO ,1 SUB #11 <- #16 M)+H{5bt
DO ,1 SUB #12 <- #158 f*% D$Mqg
DO ,1 SUB #13 <- #52 SM#]H-3
PLEASE READ OUT ,1 i>A s;*
PLEASE GIVE UP I*{nP)^9
T*Exs|N2P-
LmrfN?5
Java myQagqRx
public class Hello ~H_/zK6e
{ nNV'O(x}
public static void main(String[] args) =:Fc;n>c<K
{ Fnv;^}\z
System.out.println("Hello, world!"); }eU*(
}<^
} ~
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} xh,qNnGGi
\ a<h/4#|
k,6f
JSP /4V#C-
<% t#})Awy^R
out.print("Hello, world!"); J?1 uKR
%> ::lKL
wu!59pL
a2O75 kWnm
MIXAL zT.7
TERM EQU 19 the MIX console device number nwe*BVp
ORIG 1000 start address [Td4K.c
START OUT MSG(TERM) output data at address MSG 6r0krbN
HLT halt execution %D34/=(X
MSG ALF "MIXAL" KeB"D!={;
ALF " HELL" TDKki(o=~
ALF "O WOR" BLdvyVFx
ALF "LD " l"T44CL;
END START end of the program ]=I@1B;_m
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B\=8_z
Nuva P>C~
i:4n
<..直接输出..> .Iw AK/QS
Hello, world! drP=A~?&:
X*XZb F"=
<..或者..> KnQ*vM*VM
Jy:Qlx`
<. gQg"j)
// 不带换行 py!|\00}
? "Hello, world!" &MQmu,4
)h4f\0
// 或者 5"@*?X K^
0B/,/KX
// 带换行 Su7?;Oh/yI
?? 'Hello, world!' _\G"9,)u'
.> L|:`^M+^w
HxV=F66"
HY*Kb+[
OCaml Y@vTaE^w3
let main () = QzVnL U)
print_endline "Hello world!";; a=9:[
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gMmaK0uhS
Pascal kk@fL
program Hello; x b~yM%*c
begin ,t?B+$E
writeln('Hello, world!'); |(E
FY\
end. rC% *$g $
4N_R:B-Vu
O!#g<`r{K
Perl +H-6e P
#!/usr/local/bin/perl 9G#n 0&wRJ
print "Hello, world!\n"; DDP/DD;n}r
xd?f2=dd~h
W)2p@j59A
PHP b9J_1Gl]
<?php ]"hFC<w
print("Hello, world!"); OJuG~euy
?> wj^3N7_:w
V)HG(k
kR-SE5`Jk
Pike Nho>f
#!/usr/local/bin/pike L^2%1GfE{
int main() #ym'AN
{ >V?eog%~
write("Hello, world!\n"); -`kW&I0
return 0; i Dp)FQ$
} %COX7gV
eK?MKe
t7Iv?5]N
PL/I HZC"nb}r4
Test: procedure options(main); x.!V^HQSN
declare My_String char(20) varying initialize('Hello, world!'); ZF9z~9
put skip list(My_String); ]?kZni8j_
end Test; 2\MT;;ZTZ
4K#>f4(U`g
xQ-<WF1i
Prolog B$fPgW-
goal $aDVG})
write("hello,world!"). Q:G4Z9Kt
(ylTp]~mR-
{9&;Q|D z
Python
!Y0Vid
#!/usr/local/bin/python DrUO-
print "Hello, world!" i(%W_d!
2^[`e g
TOB-aAO
REXX }%ojw |
say "Hello, world!" nLZTK&7}
pk$l+sNZ=
SumF
2
Ruby rxvx
#!/usr/bin/ruby {l1.2!
print "Hello, world!\n" ifMRryN4
wo;~7K
7Jyy z,!5
Scheme en4k/w_
(display "Hello, world!") a
od-3"7[
(newline) b.JuI
u^+7hkk
D09Sg%w
sed (需要至少一行输入) B
dj!ia;H
sed -ne '1s/.*/Hello, world!/p' RNEp4x
!21FR*
,GbR!j@6
Smalltalk UJAv`yjG
Transcript show: 'Hello, world!' 1y@i}<9F
]b:Lo
abmYA#
SNOBOL %A9NB!
OUTPUT = "Hello, world!" <s31W3<v
END 9X+V4xux
wj$<t'MN
~rqCN,=d
SQL urs,34h
create table MESSAGE (TEXT char(15)); .LnGL]/
insert into MESSAGE (TEXT) values ('Hello, world!'); B:yGS*.tu
select TEXT from MESSAGE; ;s = l52
drop table MESSAGE; i4Q@K,$
O'p9u@kc
Uou1mZz/
Tcl #?aPisV
X>
#!/usr/local/bin/tcl mUAi4N
puts "Hello, world!" a8e6H30Sm
T9E+\D
Tj`,Z5vy
TScript w,p
PYf/t
? "Hello, world!" ~]|6T~+]83
ntX3Nt_n
:\`o8`
Turing }#RakV4
put "Hello, world!" av8B-GQI*#
Hh3X
\
iJI }TVep#
UNIX-style shell I3{PZhU.
程序中的/bin/sh可改为您使用的shell CAig]=2'
!OhC/f(GBZ
#!/bin/sh R6<X%*&%
echo 'Hello, world!' '5#^i:
hohfE3rd
7FP*oN?
GUI b4%??"&<Y
!3c\NbU
Delphi 1Z/(G1
program HelloWorld; a{'vN93
uses g]l''7G
Dialogs; )Yh+c=6
?
begin gS!:+G%
ShowMessage('Hello, World!'); t9GR69v:?
end. ^,lIK+#Elz
TPQ%L@^L+
HYD'.uj
Nuva htO+z7
<. Y!aSs3c
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) >NGj
=L<