“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。 /24}>oAH
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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》。
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以下是用不同语言写成的Hello World程序的几个例子: /b\c<'3NY
Ada `~z[Hj=2
with Ada.Text_Io; use Ada.Text_Io; zhJ0to[%?
procedure Hello is 5|cRHM#
begin "j&'R#$&d
Put_Line ("Hello, world!"); Zrp-Hv27,,
end Hello; wJD'q\n
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!nq`Py MR
汇编语言 'iTY?
c8Q}m(bhWI
x86 CPU,DOS,TASM icb*L ~qm
MODEL SMALL XOLE=zdSp
IDEAL KY}H-
STACK 100H {,u})U2
*nYg-)
DATASEG OE}FZCXF
HW DB 'Hello, world!$' xZ6x`BET-
na|sKE;{
CODESEG \KzH5 ?
MOV AX, @data c/igw+L()
MOV DS, AX 7377g'jL
MOV DX, OFFSET HW J?EDz,
MOV AH, 09H 8t. QFze?
INT 21H vw4b@v-XQ3
MOV AX, 4C00H _-3n'i8
INT 21H 4$WR8
END ?O3d Sxi
`lQ;M?D
\Z,{De%
x86 CPU,GNU/Linux,NASM :Nv7Wt!
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). `a!9_%|8
;Enter this into "hello.asm" then type: Rj4C-X4=
;"nasm -f elf hello.asm" MB7*AA;
;"ld hello.o -o hello" ;b:'i&r
;"./hello" 5\=
y9Z- x
:w!hkUx#
section .data ;data section declaration O@4 J=P=w
msg db 'Hello World!',0AH oR,6esA+6n
len equ $-msg ;string length '
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SZyORN
section .text ;code section declaration DIw_"$'At
global _start ;entry point (start of execution) - U\'Emu4
_start: mov edx,len ;string length r@m]#4
mov ecx,msg ;string start %B( rW?p&
mov ebx,1 ;file handle: stdout P%H Dz
mov eax,4 ;sys_write Fe4>G8uuwn
int 80h ;kernel system call ca,W:9#.xn
%1:caa@_p
mov ebx,0 ;return value -- FzRO{D
mov eax,1 ;sys_exit JSi0-S[Y{
int 80h ;kernel system call k|\M(Z*(P
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&^#u=w?^x
x86 CPU,Windows,MASM32 RgA"`p7{
.386 8Y.9%@
.model flat,stdcall $XTtD UP@
option casemap:none jz![#-G
;Include 文件定义 g&85L$
include windows.inc KN[;z2i
include user32.inc \hZ%NLj
includelib user32.lib ZZ!">AN`^
include kernel32.inc KbtV>
includelib kernel32.lib dzBP<Xyh
;数据段 &b`W<PAc?4
.data (wM` LE(Ks
szCaption db 'A MessageBox!',0 b0YEIV<$
szText db 'Hello,world!',0 Y)DX
;代码段 =u ?aP}zc
.code o.Rv<a5.L
start: |oke)w=gn
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK QxdC[t$Lp
invoke ExitProcess,NULL B~N3k
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 5K 2K'ZkI
end start Z#L4n#TT
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XC)9aC@s
AWK e1LIk1`p
BEGIN { print "Hello, world!" } }ePl&-9T
*=2W:,$
~bxev/$d
BASIC <K`E*IaW
传统版BASIC(例如GWBASIC): j7gw?,
eu9*3'@A
10 PRINT "Hello, world!" 4$[o; t>
20 END CDRbYO
vM6W64S
或在提示符输入: gWGDm~+
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?"Hello, world!":END } P ,"
N
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现代版BASIC(例如Quick BASIC): QJRnpN/
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Print "Hello, world!" - ~|Gwr"
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以下的语句在Quick BASIC中同样有效: 1QG q;6\
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? "Hello,world!" P+}~6}wJE
ft6)n T/"&
8zD>t~N2C
BCPL !43!JfD
GET "LIBHDR" l^9gFp~I
z'_Fg0kR{
LET START () BE qrYbc~jI7
$( uW(-?
WRITES ("Hello, world!*N") ^ls@Gr7`P
$) v62_VT2v
9+^)?JUYll
+h4W<YnW
Befunge c\1X NPGG
"!dlrow olleH">v @%R4V[Lo.
, ERV]N:(
^_@ W&*&O,c
Z|uvrFa
MhD'
Brainfuck Iz09O:ER
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< I[Lg0H8
+++++++++++++++.>.+++.------.--------.>+.>. Oh*~+/u}q
oCaYmi=:
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C A~bSB
n: '
#include <stdio.h> P3&s<mh
1+;bd'Ie
int main(void) nc k/Dw
{ iY,C0=n5Y
printf("Hello, world!\n"); 112WryS
return 0; Nh.+woFq4
} Xb%q9Z
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C++ q !z"YpYB
#include <iostream> )=[\Yf K
j%Au0k
int main() '^m.vS!/
{ wf\"&xwh?
std::cout << "Hello, world!" << std::endl; cmG27\c RO
return 0; ;{sZDjev>
} d&FXndC4F
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&)1.z7T
C++/CLI .*-8rOcc
int main() 5E'/8xp bB
{ D$}8GYq
System::Console::WriteLine("Hello, world!"); 8!{*!|Xd
} 2<EV
iP9
)j36Y =r3
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C# (C Sharp) h+Co:pr
class HelloWorldApp Z@0tZ^V{
{ ?.46X^
public static void Main() _`udd)Y2
{ Z!"-LQJ
System.Console.WriteLine("Hello, world!"); U6M~N0)Yr
} ;
j!dbT~5
} U#[&(
]->"4,}
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COBOL D;pI!S<#
IDENTIFICATION DIVISION. <a6pjx>y
PROGRAM-ID. HELLO-WORLD. 9p W~Gz
4E^ ?}_$
ENVIRONMENT DIVISION. H0af u)$,
~XTC:6ts
DATA DIVISION. 0~qc,-)3
/mex{+p>tO
PROCEDURE DIVISION. F06o-xH=
DISPLAY "Hello, world!". #DUfEZ
STOP RUN. {v|!];i
^1S{::
ks#3
o+
Common Lisp z{rV|vQ
(format t "Hello world!~%") -#|;qFD]
l)%PvLbL
DhyR
DOS批处理 Z3S+")^
@echo off >O-KJZ'GV
echo "Hello, world!" +8Lbz^#
zXY8:+f
ZyGoOk
Eiffel [:y:_ECs6
class HELLO_WORLD T8o](:B~
B)JMughq_
creation JQ03om--(
make :wC\IwG~CE
feature :0J`4
make is >(Y CZ
local <YaT r9%w
io:BASIC_IO LiG$M{ 0
do e|]e\Or>
!!io XGl2rX&
io.put_string("%N Hello, world!") W+ S~__K
end -- make +S4n416K
end -- class HELLO_WORLD io4<HN
Cyg2o<O@
) E^S+ps
Erlang [YOH'i&X
-module(hello). Z`S#> o
-export([hello_world/0]). w2DC5ei'
ix!xLm9\
hello_world() -> io:fwrite("Hello, World!\n"). m/=nz.
A=N$5ZJ
+RooU?Aq
Forth 7:jLZ!mgi
." Hello, world!" CR 7f>=-sv
C"I
jr=w
t(z]4y
Fortran 2&1mI>:F
WRITE(*,10) 2aYBcPFQh#
10 FORMAT('Hello, World!') ot}erC2~
STOP mku@n;Hl_
END .t "VsY|
_?~%+Oz/
T8^9*]:@c!
HTML *] ihc u
<HTML> jWrU'X
<HEAD> <z<>E1ZLI
<TITLE> Hello World! </TITLE>
!VGG2N8
</HEAD> IoDT
<BODY> &QHJ%c
<p>Hello World!</p> j,0`k
</BODY> Z8SwW<{ $
</HTML>
2v{WX
FLi'}C
&A0OYV3i.
HQ9+ CHgip&(.F
H Nr4}x7
#V>R#Oh}
%f]#P8VP
INTERCAL y[_k/.1
PLEASE DO ,1 <- #13 (]]hSkE
DO ,1 SUB #1 <- #238 FZi@h
DO ,1 SUB #2 <- #112 Sm'Tz&!
DO ,1 SUB #3 <- #112 h( | T.
DO ,1 SUB #4 <- #0 Z
[!"x&H]h
DO ,1 SUB #5 <- #64 Hyb(.hlZh
DO ,1 SUB #6 <- #238 2K}49*
DO ,1 SUB #7 <- #26 w!f2~j~
DO ,1 SUB #8 <- #248 BSm"]!D8*
DO ,1 SUB #9 <- #168 2k.VTGak
DO ,1 SUB #10 <- #24 ]+D@E2E
DO ,1 SUB #11 <- #16 rB[J*5v
DO ,1 SUB #12 <- #158 #mQ@4k9i
DO ,1 SUB #13 <- #52 $+4DpqJ
PLEASE READ OUT ,1
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PLEASE GIVE UP Btm,'kBG
6v)TCj/
SQN?[v
Java N5?bflY
public class Hello ^k6_j\5j
{ ?ko#N?hgI
public static void main(String[] args) D3o,2E(o
{ > 80{n8
System.out.println("Hello, world!"); Os9SfL
} s)-oCT$[
} 3xyrWl
<h#*wy:o2
5u$.!l8Nl
JSP $_.t'8F
<% 5Tl5T&
out.print("Hello, world!"); 8V:;HY#
%> <C`bf$ak
sfXFh
ZM<6yj"f
MIXAL P $`1}
TERM EQU 19 the MIX console device number ]1
f^ SxSI
ORIG 1000 start address f+Y4~k
START OUT MSG(TERM) output data at address MSG :c*"Dx'D
HLT halt execution 2-4N)q
MSG ALF "MIXAL" &_L@hsm
ALF " HELL" Ju+3}
ALF "O WOR" |*bUcS<S
ALF "LD " tYjG8P#
END START end of the program }_+XN"}C
Sdq}?- &Sa
[Sm<X
Nuva Y%
iqSY
<..直接输出..> p4VARAqi
Hello, world! tT]@yo|?e/
6"-$WUlg
<..或者..> nb_/1{F
V(S7mA:T
<. u]*7",R
uU
// 不带换行 +<bj}"
? "Hello, world!" N3G9o`k
ASXGM0t
// 或者 LHY7_"u#
$?GggP d
// 带换行 SEgw!2H
?? 'Hello, world!' h#0n2o #
.> ;$D,w
>G`p T#
hUMG}<
OCaml c9/w{}F
let main () = JH?ohA
print_endline "Hello world!";; Cv#aBH'N
SdH=1zBc
s$fM,l:!
Pascal 1Yb &E7j
program Hello; NpVL;6?7T
begin ZKi&f,:
writeln('Hello, world!'); 'w:ugb9]
end. N#u'SGTG
5EtR>Pc
h"[B zX
Perl cK$yr)7
#!/usr/local/bin/perl r5j$FwY
print "Hello, world!\n"; G$C2?|V)=
?b_E\8'q]
9^*RK6
PHP %H\b5&
_y
<?php HI5NWdfRl
print("Hello, world!"); uda++^y:
?> 2}^=NUM\NX
{6u)EJ
kff N0(MR
Pike #S7oW@
#!/usr/local/bin/pike >LPb>t5%p
int main() 'aNkU
{ Pt"K+]Ym
write("Hello, world!\n"); h8V*$
return 0; ,:Px(=d4
} Yn?beu'
2IYzc3Z{9
g9C;JmU
PL/I "leSQ
Test: procedure options(main); j*3;G+
declare My_String char(20) varying initialize('Hello, world!'); S9dxrm?
put skip list(My_String); 2$JZ(qnN
end Test; 19fa7E<
EZ!! V~
=1[_#Moc6
Prolog Zfs-M)
goal GgxPpS<ne
write("hello,world!"). Z=%
j|xE_
~~yng-3)1
~<k>07
Python "dpjxH=xO
#!/usr/local/bin/python A f`Kg-c_(
print "Hello, world!" }+jB5z'w
RLf-Rdx/
nWK8.&{.
REXX HxbzFu?h
say "Hello, world!" xOkdu k]
D5"5`w=C
&[yC M!
Ruby wH"9N+82M
#!/usr/bin/ruby 8L[+$g`
print "Hello, world!\n" &r[f ;|o
\]>821r
/Am9w$_T[
Scheme rl.K{Uad
(display "Hello, world!") | V(sCF
(newline) M8H hjoo
]I*RuDv}
]*NYuEgc
sed (需要至少一行输入) i&DbZ=n2
sed -ne '1s/.*/Hello, world!/p' 7 2$S'O%,0
1V,@uY)s
fDr$Wcd~
Smalltalk '6zZ`Ll9
Transcript show: 'Hello, world!' hT^&