“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。 !+;'kI2
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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》。 ,qS-T'[v,(
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以下是用不同语言写成的Hello World程序的几个例子: ):@XMECa
Ada ~bp^Q|
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with Ada.Text_Io; use Ada.Text_Io; jpl"KN?X
procedure Hello is CH6^;.
begin fa7I6 i
Put_Line ("Hello, world!"); Pd99vq/
end Hello; w&eX)!
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汇编语言 'WEypz
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x86 CPU,DOS,TASM 3|=9aM^ x^
MODEL SMALL n+Ia@$|m
IDEAL nM+(
STACK 100H wic&
$p/%
}n+#o!uEf
DATASEG 6]=$c<.&
HW DB 'Hello, world!$' ^:.=S`,^
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CODESEG n o*p`a
*
MOV AX, @data T+_pm DDN
MOV DS, AX STDT]3.
MOV DX, OFFSET HW '!)|;qe
MOV AH, 09H Jww LAQ5
INT 21H !TJCQ[Aa}
MOV AX, 4C00H v !~lVv&
INT 21H oUMY?[Wp
END O@@=ZyYwc
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WD=#. $z$
x86 CPU,GNU/Linux,NASM aKkG[qN
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). >4gGb)
;Enter this into "hello.asm" then type: Y)kO"
;"nasm -f elf hello.asm" :G/T{87H
;"ld hello.o -o hello" #$&!)13
;"./hello" k_p4 f %9
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section .data ;data section declaration 50:gk*hy
msg db 'Hello World!',0AH ;aJBx
len equ $-msg ;string length [b-wak})aD
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section .text ;code section declaration FSaCbs(
global _start ;entry point (start of execution) VCzmTnD
_start: mov edx,len ;string length EgAM,\
mov ecx,msg ;string start W0n/B&C
mov ebx,1 ;file handle: stdout o ]UG*2
mov eax,4 ;sys_write |p"P+"#
int 80h ;kernel system call
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N? r{Y$x
mov ebx,0 ;return value c2aX_ "
mov eax,1 ;sys_exit ZXP9{Hh
int 80h ;kernel system call 3g!tk9InG
UADD 7d
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x86 CPU,Windows,MASM32 "*E#4e[
.386 Rf)lFi
.model flat,stdcall | |=q"h3(
option casemap:none Zi&qa+F
;Include 文件定义 Nf.6:=
include windows.inc 'l+).},
include user32.inc W\V'o Vt
includelib user32.lib xE$(I<:
include kernel32.inc cO9aT
includelib kernel32.lib _`4jzJ*
;数据段 gO kq>i_
.data jmgU'w-s
szCaption db 'A MessageBox!',0 NwH`t#zd
szText db 'Hello,world!',0 s8,{8k
;代码段 YGRv` `(
.code D^+#RR'#,
start: 86bl'FdKS
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK s8,N9o[.~P
invoke ExitProcess,NULL [42vO
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> P`JO6O:&
end start kPt9(E]
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AWK dd+[FU
BEGIN { print "Hello, world!" } =YZyH4eI
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BASIC os|Y=a
传统版BASIC(例如GWBASIC): NdpcfZq
RrM C[2=
10 PRINT "Hello, world!" II!Nr{A
20 END >j [> 0D
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或在提示符输入: F`W8\u'db
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?"Hello, world!":END ig
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现代版BASIC(例如Quick BASIC): mez )G|
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Print "Hello, world!" fmuAX w>
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以下的语句在Quick BASIC中同样有效: ?LP&VU1
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? "Hello,world!" "c[ D0{\{
9$-V/7@)
DOi\DJV!
BCPL C_>dJYM
GET "LIBHDR" t@KN+
C
h^{D "
LET START () BE &X0qH8W
$( }O+F#/6
WRITES ("Hello, world!*N") o.qeF4\d6
$) <k2Qcicy
dl:uI5]
EeW %5/;
Befunge 4%h@K(iN
"!dlrow olleH">v qT(
3M9!
, }Wxu =b
^_@ dA;f`Bi;Q
c< ke)@
m"MTw@}SJ;
Brainfuck 9(.P2yO
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 4~<
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+++++++++++++++.>.+++.------.--------.>+.>. J1,\Q<
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C Vz$X0C=W;H
#include <stdio.h> [cSoo+Mlx
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int main(void) }"?v=9.G
{ aE0yO#=
printf("Hello, world!\n"); JJL#Y
return 0; _e/>CiN/
} -J?i6BHb
n@9*>DU
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C++ >L6V!
#include <iostream> #q`-"2"|
1:I47/
int main() Z-(V fp4
{ l`s_Id#
std::cout << "Hello, world!" << std::endl; 9Ra_[1
return 0; y993uP
} 16q"A$
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C++/CLI K2J DG.<
int main() A;~u"g 'z&
{ 52-Gk2dp
System::Console::WriteLine("Hello, world!"); c hE~UQ
} B2UQO4[w
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C# (C Sharp) n
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class HelloWorldApp ht8%A 1|
{ 8 Zy`Z
public static void Main() ^+CTv
{ }]cKOv2
System.Console.WriteLine("Hello, world!"); `&2AN%Xz
} Y
}*[Krw
} I4%&/~!
Q<$I,C]
S:qML]RO
COBOL _9!_fIY
IDENTIFICATION DIVISION. Xz`?b4i
PROGRAM-ID. HELLO-WORLD. =y"
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ENVIRONMENT DIVISION. B|#*I[4`w@
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DATA DIVISION. MqXN,n+`k
SooSOOAx[
PROCEDURE DIVISION. Z/=x(I0
DISPLAY "Hello, world!". Pyc/6~?
STOP RUN. I~lX53D
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bg$df 0
Common Lisp `.PZx%=
(format t "Hello world!~%") I>X _j)
\D8d!gr
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DOS批处理 {3Z&C$:s
@echo off R3;GMe@D#
echo "Hello, world!" 7[)4k7
,}%+5yH
2lw0'
Eiffel ( r_xs
class HELLO_WORLD ,]e!OZ[$m
/M>8ad
creation M~Tq'>Fn
make <'H^}gQow
feature #&vP(4p
make is _iBNy
local i>gbT+*E!
io:BASIC_IO GJW>8*&&(
do 3{o5AsVv
!!io hamn9
io.put_string("%N Hello, world!") vluA46c
end -- make XYD}OddO
end -- class HELLO_WORLD )]Xj"V2
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[4,=%ez
Erlang y~_wr}.CS
-module(hello). 2T!pFcc
-export([hello_world/0]). ;2K_u
09y%FzV
hello_world() -> io:fwrite("Hello, World!\n"). 7VkT(xnm
aL@myq.
:|J'HCth
Forth *7<5 G{
." Hello, world!" CR :AYp{"{
ffo{4er
=\7o@ 38
Fortran -~Kw~RX<(
WRITE(*,10) ]Bw2> 6W
10 FORMAT('Hello, World!') l;$HGoJ
STOP `9SRiy
END QjMH1S
!%n3_tZC
|<&9_Aq_
HTML '6*^s&H~
<HTML> H8j#rC#&pm
<HEAD> !gv/ jdF
<TITLE> Hello World! </TITLE> #)`N
</HEAD> D2x-Wa
<BODY> o ohgZ&k2]
<p>Hello World!</p> - 7)%J+5
</BODY> 'r6s5 WC
</HTML> MKSiOM
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HQ9+ F)KUup)gc
H 9u";%5 4
dM"Suw
g+h)s!$sB
INTERCAL #|76dU
PLEASE DO ,1 <- #13 xwG=&+66
DO ,1 SUB #1 <- #238 uxF88$=!t
DO ,1 SUB #2 <- #112 /I|.^ Id|
DO ,1 SUB #3 <- #112 s-]k 7a2V
DO ,1 SUB #4 <- #0 _y{z%-
DO ,1 SUB #5 <- #64 w[@>k@=
DO ,1 SUB #6 <- #238 hmJ{'D1"
DO ,1 SUB #7 <- #26 &U:bRzD
DO ,1 SUB #8 <- #248 :lQl;Q -e
DO ,1 SUB #9 <- #168 ,w%cX{
DO ,1 SUB #10 <- #24 %(h-cuhq
DO ,1 SUB #11 <- #16 -?gr3rV@
DO ,1 SUB #12 <- #158 lNuZg9h
DO ,1 SUB #13 <- #52 *Iv.W7 [
PLEASE READ OUT ,1 Gv(bD6Rz
PLEASE GIVE UP 1qXqQA
<H3 njv
*het_;)+{
Java 7r,'a{Rcn
public class Hello vKYdYa\
{ z6e)|*cA$
public static void main(String[] args) "X~ayn'@w,
{ D@"g0SW4
System.out.println("Hello, world!"); pfS?:f<+6"
} HlEp
Dph%
} e<s56<3j
1'tagv?
-:IG{3fnu
JSP VF1)dd
<% +#~=QT9
out.print("Hello, world!"); j&n][=PL
%> '
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#@xSR:m
`k ~.>#
MIXAL Oo{+W5[
TERM EQU 19 the MIX console device number }Th":sin},
ORIG 1000 start address ro{q':Z3
START OUT MSG(TERM) output data at address MSG *oLAO/)n
HLT halt execution sdP% Y<eAT
MSG ALF "MIXAL" a86m?)-c
ALF " HELL" FtbqZN[
ALF "O WOR" \,jrug<C$^
ALF "LD " Qzy[
END START end of the program {H
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yyZ}qnbx]
Bs2.$~
Nuva oK1"8k|Z
<..直接输出..> yGl
(QLk
Hello, world! b5u_x_us|
\q#s/&b
<..或者..> z-(@j;.
GFd~..$
<. -AwR$<q'
// 不带换行 @@$=MSN
? "Hello, world!" Rt!G:hy7
-N`j` zb|
// 或者 u,<I%
1Y iUf
// 带换行 NQS@i'W=g
?? 'Hello, world!' (5[|h
.> fF!Mmm"
J5Rr7=:*S
~@=:I
OCaml 5fi6>>
let main () = K|$Dnma^n
print_endline "Hello world!";; ^)=c74;;
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Pascal V&4)B &W
program Hello; UEmNT9V
begin S%n5,vwE
writeln('Hello, world!'); (pXZ$R:
end. PZ2$ [s0W
k]FP1\Y
aH<BqD[#
Perl Di{T3~fqU
#!/usr/local/bin/perl bv$g$
print "Hello, world!\n"; 5^'PjtW6
-DDH)VO
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PHP D&_Ir>"\
<?php !FOPFPn
print("Hello, world!"); VQE8hQ37
?> .um]1_= \
dA-ik
TA;
Pike
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#!/usr/local/bin/pike `?VtB!p@x=
int main() :Bc)1^I
{ U085qKyCw
write("Hello, world!\n"); +T:F :X`
return 0; yv| |:wZC
} $(v1q[ig
B6~a `~"
lVY`^pw?
PL/I !fF1tW
Test: procedure options(main); D-*`b&i48
declare My_String char(20) varying initialize('Hello, world!'); S8;Dk@rr(y
put skip list(My_String); ")kE1D%
end Test; clK3kBh~&
C!xq p
01Bs7@"+
Prolog [su2kOX|X
goal kSGFLP1FN
write("hello,world!"). }{;m:Iia_
J =o,: 3"
K FV&Dt}<
Python [ 9)9>-
#!/usr/local/bin/python INrl^P*
print "Hello, world!" t(/b'Peq
4L#q?]$
=fa!"$J3
REXX HU]Yv+3
say "Hello, world!" g2L^cP>2
<)c/PI[j
{U8Sl.
Ruby 9ui_/[K
#!/usr/bin/ruby MB|+F
print "Hello, world!\n" /h'V1zL#
H@0i}!U64
2\&uO
Scheme K(RG:e~R0i
(display "Hello, world!") ]~~PD?jh
(newline) UO^"<0u
&UH .e
hnha1
f
sed (需要至少一行输入) 7z!|sPW](b
sed -ne '1s/.*/Hello, world!/p' Y$SZqW0!/
ecIxiv\
PY=(|2tb4
Smalltalk |@KW~YlE
Transcript show: 'Hello, world!' ZrJAfd \5c
`.Z MwA
VS0
&[bl
SNOBOL s.z (1MB]
OUTPUT = "Hello, world!" '&@'V5}C{
END bqpy@WiI S
xaQ]Vjw
("UcjB^62
SQL "w]
Bq0
create table MESSAGE (TEXT char(15)); R,[dEP
insert into MESSAGE (TEXT) values ('Hello, world!'); lN$#lyy
select TEXT from MESSAGE; Dd8*1,
drop table MESSAGE; (xw) pR
e"HA.t[A
j4H]HGHv
Tcl l;^Id#N
#!/usr/local/bin/tcl :'RmT3
puts "Hello, world!" EGWm0 F_
nDx}6}5)
@ht= (Jk9
TScript gj{2"tE
? "Hello, world!" c?oNKqPzg
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@o0H
9^ITP!~e*
Turing b^b@W^\hn
put "Hello, world!" 0Q>f,}W%>
( 0/g)gW
%>^CD_[eO
UNIX-style shell 0NlC|5ma)
程序中的/bin/sh可改为您使用的shell LAqmM3{fA
=Tv;?U C
#!/bin/sh ~/LO @
echo 'Hello, world!' :tclYX
5.!iVyN
`7<4]#b^o
GUI "w}}q>P+sA
Dizc#!IGU
Delphi ?K]Cs&E4
program HelloWorld; V'TBt=!=]
uses 2LS03 27
Dialogs; @*W)r~ "~
begin *
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ShowMessage('Hello, World!'); J8Bz|.@Q
end. L{_Q%!h3]
_7df(+.{<A
R7%'
vZk
Nuva %Wy$m?gD
<. Cx(|ZD^
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) J`/ t;xk
.> >*/\Pg6^
q~_DR4xZ
Pi|WOE2
Visual Basic ;"/[gFD5u
MsgBox "Hello, world!" C+\c(M a
'或者 Ni]V)wGE;
Print "Hello, world!" aH7i$U&
yH}(0
t){})nZ/4
Visual FoxPro 49S*f
? "Hello, world!" GG0l\!2)
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v%gkQa
X11 La&?0P A
用一个程序 I =G3
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xmessage 'Hello, world!' G Y? ?q8
h RK&
用C++和gtkmm 2 g}(yq:D
PvW {g5)S
#include <iostream> \*] l'>x1
#include <gtkmm/main.h> FvX<