“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。 ryA+Lli.
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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》。 ObS#aRq
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以下是用不同语言写成的Hello World程序的几个例子: B8.}9
Ada a+a6P5kJ
with Ada.Text_Io; use Ada.Text_Io; ,7k1n{C)
procedure Hello is nvNF~)mu
begin &1`Y&x:p
Put_Line ("Hello, world!"); H/;AlN|!
end Hello; <$25kb R5K
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C>,> _
汇编语言 5tLb
o
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x86 CPU,DOS,TASM qcQq.cS_'N
MODEL SMALL U^U
hZ!
IDEAL -:J<JX)o
STACK 100H 72*j6#zS
KMQPA>w#
DATASEG T,vh=UF%]
HW DB 'Hello, world!$' Q|S>C%4?
BS?$eai@:9
CODESEG 2Yd@V}
MOV AX, @data [cl+AV "
MOV DS, AX 2cRru]VZ5
MOV DX, OFFSET HW IXm[c@5l
MOV AH, 09H v'^}zO
INT 21H Sl<1Rme=w
MOV AX, 4C00H AP1ZIc6
INT 21H Z'}%Mkm`i}
END ozl!vf# kv
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R(cg`8
x86 CPU,GNU/Linux,NASM Ck"db30.
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). u&UmI-}
;Enter this into "hello.asm" then type: >lzXyT6x8
;"nasm -f elf hello.asm" O/d]2<V
;"ld hello.o -o hello" suGd &eP|
;"./hello"
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dn Sb}J
section .data ;data section declaration .jtv Hr}U
msg db 'Hello World!',0AH ]+B.=mO_
len equ $-msg ;string length ^W@%(,xb
(~E-=+R[$&
section .text ;code section declaration z5Tsu1c
global _start ;entry point (start of execution) zDbO~.d
_start: mov edx,len ;string length aIrM-c8.O
mov ecx,msg ;string start b0f6p>~q^
mov ebx,1 ;file handle: stdout C8|#
mov eax,4 ;sys_write :eJJL,v
int 80h ;kernel system call I;eoy,
eO*s,*
mov ebx,0 ;return value RO%M9LISI
mov eax,1 ;sys_exit |_-w{2K
int 80h ;kernel system call o90g;Vog
v&WK9F\
9PV+Kr!c5I
x86 CPU,Windows,MASM32 *p#@W-:9E
.386 [^6z>
.model flat,stdcall Iwh0PfWJ
option casemap:none :M f8q!Q'
;Include 文件定义 v2p0EOS
include windows.inc n"D` =
include user32.inc [m6+I9
includelib user32.lib fqq4Qc)#U&
include kernel32.inc hiA\~}sl n
includelib kernel32.lib UL>2gl4s/
;数据段 >w,jaQ
.data M+HhTW;I=
szCaption db 'A MessageBox!',0 =l${p*ABQ
szText db 'Hello,world!',0 Wi>m}^}9
;代码段 %N`_g' r!
.code z9g6%RbwX
start: $?]`2*i
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK SBs! 52
invoke ExitProcess,NULL S_OtY]gF
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> BT_XqO
end start *n7=m=%)
HX}B#T
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AWK gH\>",[
BEGIN { print "Hello, world!" } 748:*
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n ]D io
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BASIC yg*
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传统版BASIC(例如GWBASIC): vTK8t:JQ~
\b8#xT}
10 PRINT "Hello, world!" V@b7$z
20 END [[6"qq
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或在提示符输入: F'|e:h
G e]NA]<
?"Hello, world!":END G
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现代版BASIC(例如Quick BASIC): 6-TYOUm
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Print "Hello, world!" Dykh|"
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以下的语句在Quick BASIC中同样有效: 3!fR'L/i
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? "Hello,world!" F --b,,
j%-Ems*H
\ERxr
BCPL F8{gJaP x
GET "LIBHDR" {Bk` Zlki
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LET START () BE t!6uz
$( a=A12<
WRITES ("Hello, world!*N") JehanF[
$) ]Sa#g&}T>
}zsIp,
.
_|=Btoo
Befunge L8f+uI
"!dlrow olleH">v -s`Wd4AP
, 0Ui_Trlc
^_@ ecJjE
56P
ly0L)L]\
&oB*gGRw=7
Brainfuck xR&:]M[Vg
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 26nwUNak
+++++++++++++++.>.+++.------.--------.>+.>. t=@d`s:R2
kc P ZIP:
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C 8~R.iqLoX
#include <stdio.h> e@0|fB%2
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int main(void) O TlqJ
{ 1+N'cB!y
printf("Hello, world!\n"); i7r)9^y
return 0; 8Nyz{T[
} 'iZwM>l\
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C++ X=)L$Kd7
#include <iostream> *<:X3|3E
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int main() <ml?DXT
{ m[2[9bQ0
std::cout << "Hello, world!" << std::endl;
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return 0; Ua
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}
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#@`c7SR
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C++/CLI 9=]HOUn
int main() [qRww]g;P|
{ =0Y0o_
System::Console::WriteLine("Hello, world!"); UR_Ty59
} sfw*_}y
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*qSvSY*
C# (C Sharp) zx=eqN@!@
class HelloWorldApp F) Q[ cai
{ [|eIax xR,
public static void Main() XdV>6<gf{
{ !wpK
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System.Console.WriteLine("Hello, world!"); mkyYs[
} lV^:2I/
} ejkUNCKQt
h;+O96V4.
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COBOL dO1m
IDENTIFICATION DIVISION. PDA9.b<q0
PROGRAM-ID. HELLO-WORLD. E.NfVeq
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ENVIRONMENT DIVISION. XfVdYmii
H@wjZ;R
DATA DIVISION. yy8BkG(
R"O%##Ws
PROCEDURE DIVISION. ]f&]E
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DISPLAY "Hello, world!". M*3G
STOP RUN. 8Y RT0/V
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9c
zzI,iEG
Common Lisp X{Vs
(format t "Hello world!~%") 9H4"=!AAgD
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#'%ii,;wQ
DOS批处理 vjm? X
@echo off `^8mGR>OpI
echo "Hello, world!" a1I-d=]
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]3*w3Y!XK
Eiffel vW*Mf}=
class HELLO_WORLD RPeH [M^
H'YK j'
creation Zh;}Q(w
make t6KKfb
feature > _sSni
make is L{>rN`{
local i{$P.i/&
io:BASIC_IO H9TeMY
do 8i73iTg(
!!io Z9 ws{8@_
io.put_string("%N Hello, world!") w)vpo/?
end -- make YiuV\al
end -- class HELLO_WORLD b~>@x{
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Erlang 2Q@na@s
-module(hello). iExKi1knx
-export([hello_world/0]). dba_(I~y
['\R4H!x
hello_world() -> io:fwrite("Hello, World!\n"). 6q>iPK Jt
K*Ba;"Ugeg
.{8[o[w
=
Forth iC iKr aW
." Hello, world!" CR ~gZ1*8 s`
[olSgq!3
CXoiA"P
Fortran R#~l[S8u^
WRITE(*,10) *.wj3'wV
10 FORMAT('Hello, World!') :EHk]Hkz
STOP ~x'8T!M{
END b&h'>(
=2GKv7q$x,
[Fag\/Y+
HTML 8(K:2
<HTML> tk'&-v'h
<HEAD> wVf 7<@/y
<TITLE> Hello World! </TITLE> mk~CE
</HEAD> |-/@3gPO
<BODY> L6nsVL&
<p>Hello World!</p> F^Jz
</BODY> Z D"*fr
</HTML> o ?05bv
cL4Go,)w
S m=ln)G=
HQ9+ \^y~w~g?
H X}3?k<m
v:74iB$i/C
RLQ*&[A}
INTERCAL s1W n.OGR4
PLEASE DO ,1 <- #13 hC<E4+5.,
DO ,1 SUB #1 <- #238 mpwh=
DO ,1 SUB #2 <- #112 {_\dwe9
DO ,1 SUB #3 <- #112 z@19gD#8
DO ,1 SUB #4 <- #0 4|\M`T
DO ,1 SUB #5 <- #64 u|$HA>F[
DO ,1 SUB #6 <- #238 ShV_8F z
DO ,1 SUB #7 <- #26 Lhg
DO ,1 SUB #8 <- #248 f&5S`}C
DO ,1 SUB #9 <- #168 & }j;SK5
DO ,1 SUB #10 <- #24 *<
fJgc"3
DO ,1 SUB #11 <- #16 S\I+UeFkf
DO ,1 SUB #12 <- #158 zpf<!x^
DO ,1 SUB #13 <- #52 Wy6a4oY
PLEASE READ OUT ,1 4`oKvL9
PLEASE GIVE UP gk8v{'0Er
7vPGb:y
.HY,'oC.
Java It/'R-H
public class Hello Y~^R^J
{ $;ny`^8
public static void main(String[] args) |p*cI @
{ {*hGe_^
System.out.println("Hello, world!"); {y@8E>y5$
} =$#5Ge]b
} aG =6(ec.
"Zn
nb*pOM
.%W.uF^
JSP 45%D^~2~F
<% .sj/Lw}
out.print("Hello, world!"); NzhWGr_x'
%> 2'W#x
751Qi
UL~~J[1r
MIXAL HXdo:#xEO
TERM EQU 19 the MIX console device number tNZZCdB
ORIG 1000 start address <Mo{o2F=
START OUT MSG(TERM) output data at address MSG 8VG~n?y
HLT halt execution ~LFM,@
MSG ALF "MIXAL" L*6<h
ALF " HELL" ^P [#YO
ALF "O WOR" +B+cN[d
ALF "LD " O<>+l*bk
END START end of the program .pl,ujv
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8>vNa
Nuva {uZ|Oog(p
<..直接输出..> dn=srbJ
Hello, world! y[cc<wm$
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<..或者..> /s(PFN8#Y
n2c(x\DA&
<. Ha ZV7
// 不带换行 v=dN$B5y3
? "Hello, world!" q:jv9eL.O
lQ[JA[
// 或者 K'"s9b8
6b` Jq>v
// 带换行 6+s&%io4
?? 'Hello, world!' $j(4FyH\
.> 'f %oL/,
^pfM/LQ@
Pq-@waH3
OCaml oz3!%'
let main () = f::^zAV
print_endline "Hello world!";; T2|<YJ=
4RQ38%> >j
3|3ad'
Pascal B<@a&QBTg
program Hello; MScUrW!TA
begin R[vX+d!7
writeln('Hello, world!'); T
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ZkN6
end. ` -W4/7
V0#E7u`4
'rfsrZ?
Perl BTA2['
#!/usr/local/bin/perl .OW5R*
print "Hello, world!\n"; %.uN|o&n
Mj19;nc0I
#:MoZw`rlw
PHP Xpkj44cd@
<?php >A6PH*x
print("Hello, world!"); <x$fD37
?> C<^S$
_\,4h2(
6is+\
Pike rg%m
#!/usr/local/bin/pike 3],(oQq^
int main() 4h}\Kl
{ IL*MB;0>
write("Hello, world!\n"); h=NXU9n%'
return 0; (YmIui>
} \IR$~
<`A!9+
zrtbk~v8y
PL/I j_zy"8Y{
Test: procedure options(main); e5ww~%,
declare My_String char(20) varying initialize('Hello, world!'); RD:LNl<0sh
put skip list(My_String); IeIv k55
end Test; lrMkp@f.
d;r,?/C
Z\)P|#L$
Prolog 7:.!R^5H
goal ;:)u
rI?
write("hello,world!"). 6H|T )
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PCKxo;bD
Python |ew:}e: k<
#!/usr/local/bin/python o3OJI_
v&
print "Hello, world!" "KY]2v.
bG)6p05Oa
<(~geN
REXX SQw"mO
say "Hello, world!" K~8!Gh{h]
xtXK3[s
Zl2doXC
Ruby "1ZVuI
#!/usr/bin/ruby I?<ibLpX
print "Hello, world!\n" ]RW*3X
O=Vj*G,
23zR0z (L
Scheme -]Oi/i, {
(display "Hello, world!") fvDcE]_%H
(newline) BUsAEwM
yv5c0G.D
f%STkL)
sed (需要至少一行输入) IS!]!s'EI
sed -ne '1s/.*/Hello, world!/p' Lb2/ Te*
mgEZiAV ?
=Ajw(I[56
Smalltalk n]wZ7z
Transcript show: 'Hello, world!' M""X_~&I"
79M`?xm
!AL?bW
SNOBOL _3_o/I
OUTPUT = "Hello, world!" (Z>vbi%
END xx%*85 <
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3],[6%w
SQL 2FTJxSC
create table MESSAGE (TEXT char(15)); $D#eD.
insert into MESSAGE (TEXT) values ('Hello, world!'); 54&&=NVs|
select TEXT from MESSAGE; RYX=;n
drop table MESSAGE; *wz6 2p
#!M;4~Sfx
HG})VPBa
Tcl 9'\*Ip^
#!/usr/local/bin/tcl S L%lY
puts "Hello, world!" 9KZLlEk5O
g*:f#u5
e&="5.ik
TScript _&F*4t!n_
? "Hello, world!" 6q^.Pg-Y
sX=_|<[
lem\P_V)
Turing WAh{*$Rpl
put "Hello, world!" *s"{JrG`O
:U#4H;kk~j
N%QVkuCbM
UNIX-style shell [6a&9#[A
程序中的/bin/sh可改为您使用的shell 80O[pf*?
sMqAuhw$.
#!/bin/sh GVzG
echo 'Hello, world!' q \\52:\
W-@}q}A
9.$k^|~
GUI w#`E;fN'
{3=]cLtt
Delphi IH'&W
program HelloWorld; '|l1-yD_
uses 4P}<86xk
Dialogs; #a"gW,/K
begin IG~d7rh"
ShowMessage('Hello, World!'); XQL]I$?
end. Q68q76
!XS ;&s7[*
go$zi5{h#
Nuva SdBo sB3v>
<. Q+'QJ7fw'|
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) 6N'v`p8
.> N!:&Xz
&7t3D?K'qX
]l4#KI@
Visual Basic P_ x9:3
MsgBox "Hello, world!" ey>V^Fj
'或者 r@Tq-o
Print "Hello, world!" 0SLS;s.GX
Mk@%Wuxg2
E"$AOM?(*i
Visual FoxPro WfE,U=e*
? "Hello, world!" v9s/!<j
7ClN-/4
BiUbg6T.G
X11 @'{m-?*
用一个程序 q}mQm'
U#W9]il$
xmessage 'Hello, world!' #Y;_W;#
X8 (,
,>_
用C++和gtkmm 2 @e_<OU
=tE7XC3X_
#include <iostream> \d#|n u
#include <gtkmm/main.h> jN43vHm\Y9
#include <gtkmm/button.h>
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#include <gtkmm/window.h> u*J,3o}
<
using namespace std; 1FiFP5
K7H`Yt
class HelloWorld : public Gtk::Window (\<