“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。 [uh$\s7
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 onuhNn_=>
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以下是用不同语言写成的Hello World程序的几个例子: z>f>B6
Ada >9S@:?^&q>
with Ada.Text_Io; use Ada.Text_Io; &$vW
procedure Hello is Wy'H4Rg8
begin a^*@j:[
Put_Line ("Hello, world!"); #h 4`f
end Hello; B`/cKfg
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汇编语言 c
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K`9ph"(Z
x86 CPU,DOS,TASM NTHy!y<!h
MODEL SMALL Use`E
IDEAL !*?Ss
STACK 100H +U%U3tAvs
H@uCbT
DATASEG ?}N@bsl08w
HW DB 'Hello, world!$'
zai x_mR
l1RpG"
CODESEG r`Qzn" H
MOV AX, @data 8G>;X;W
MOV DS, AX Ng6(2Wt0e
MOV DX, OFFSET HW \?bp^BrI
MOV AH, 09H kW#{[,7r
INT 21H "))G|+tz
MOV AX, 4C00H \gh`PS-B
INT 21H WrR97]7t
END u= |hRTD=
}<EA)se"
NC*h7
x86 CPU,GNU/Linux,NASM u0md ^
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). LN8V&'>
;Enter this into "hello.asm" then type: O1.a=O
;"nasm -f elf hello.asm" 0aMw
;"ld hello.o -o hello" /;%[:x
;"./hello" ;)^eDJ<
{I!sXj
section .data ;data section declaration $Q[>v!!X
msg db 'Hello World!',0AH aqjS 5!qh
len equ $-msg ;string length ~$0Qvyb>
ldJ:A*/M6
section .text ;code section declaration E47U &xL
global _start ;entry point (start of execution) Q1G?e,Q
_start: mov edx,len ;string length QOECpk-
mov ecx,msg ;string start 3q=A35*LT>
mov ebx,1 ;file handle: stdout w,\#)<boyb
mov eax,4 ;sys_write 5N:THvh6o
int 80h ;kernel system call L`yyn/2>
y7I')}SC
mov ebx,0 ;return value G_wzUk=L
mov eax,1 ;sys_exit V}#2pP
int 80h ;kernel system call H4HWr6
/"t*gN=wrF
x,\PV>
x86 CPU,Windows,MASM32 ^AWM/aY
.386 GdqT4a\S
.model flat,stdcall oEHUb?(p
option casemap:none -ISI!EU$
;Include 文件定义 bF88F_
include windows.inc silTL_$
include user32.inc xGQ958@
includelib user32.lib eCYgi7?
include kernel32.inc ^X%{]b K
includelib kernel32.lib 9w
-t9X>X
;数据段 :@TfhQV_=Q
.data t@Qs&DZ7k
szCaption db 'A MessageBox!',0 G[YbgG=9Y
szText db 'Hello,world!',0 Rx$5#K!%M
;代码段 ,zy4+GW
.code xzFV]
start: Go}C{(4T
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK I$4GM
invoke ExitProcess,NULL _LV;q! /j
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> C:n55BE9
end start Q(-:)3g[aL
Vwp fkD`
[@OXvdTV
AWK R qS2Qo]
BEGIN { print "Hello, world!" } %@Nuzdp
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cvpcadN[
BASIC =GpO}t">
传统版BASIC(例如GWBASIC): a;eV&~
JJ3(0
+
10 PRINT "Hello, world!" Ed3 *fY
20 END %,rUN+vW
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或在提示符输入: NTk"W!<Cl2
{]~b^=qE$
?"Hello, world!":END dZ&/Iz
odPq<'V|AY
现代版BASIC(例如Quick BASIC): [-cYFdt"V
&N!QKrj3
Print "Hello, world!" 317Lv
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以下的语句在Quick BASIC中同样有效: v\#69J5.>)
>dol
? "Hello,world!" @x">e][B
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U}7a;4?
BCPL }O<u
GET "LIBHDR" V.kUFTCvf
u>j:8lhtV
LET START () BE x68$?CD
$( C8%Io l
WRITES ("Hello, world!*N") 83UIH0(
$) d-g&TSGd
C6=7zYhR
F8km8lPQl
Befunge X8Px
"!dlrow olleH">v
Vkdchc
, i~}[/^
^_@ le?hCPHkp
xI}h{AF7
n%I%O7
Brainfuck S,LW/:,
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ,~t{Q*#_h
+++++++++++++++.>.+++.------.--------.>+.>. xtyzy@)QL
( Kh<qAP_n
PuAcsYQhN
C 'v&k5`Qq
#include <stdio.h> WRQJ6B
Vd[[<
int main(void) DG&14c>g
{ >Liv].
printf("Hello, world!\n"); U]lXw+&
return 0; DQ^yqBVgQ
} t%<nS=u
D^To:N7U
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C++ \3(d$_:b
#include <iostream> {w.rcObIw+
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int main() MzRURH,
{ @2-Eky
std::cout << "Hello, world!" << std::endl; CRvUD.D
return 0; $[iSZ ;
} #uJGXrGt=
r*<)QP^B~
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C++/CLI pS
vDH-
int main()
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{ I~EQuQ >=
System::Console::WriteLine("Hello, world!"); jQOY \1SR
} [>+(zlK"
Q+E%"`3V4l
T<06y3sN
C# (C Sharp) '/kSUvd
class HelloWorldApp >(Jy=m?
{ wxpE5v+f|
public static void Main() IC>OxYg*
{ k.>*!l0
System.Console.WriteLine("Hello, world!"); `6`NuZ*6g
} ?y!0QAIXK
} Q@hx+aM
^HumyDD6
^EE3E'
COBOL Y[9x\6
_E
IDENTIFICATION DIVISION. 7Xm7{`jH
PROGRAM-ID. HELLO-WORLD. l2KR=&SX/
a0OH
ENVIRONMENT DIVISION. vbzeabm
ipnvw4+
DATA DIVISION. &yv%"BPV
- XIjol(
PROCEDURE DIVISION. @yPa9Ug(V
DISPLAY "Hello, world!". Ia$&SS)K
STOP RUN. g4_DEBh
,# rl"
R| t"(6
Common Lisp |U%S<X
(format t "Hello world!~%") oqHI`Tu
.|$6Pi%!
oX@nWQBc_
DOS批处理 h|"98PI
@echo off cAIMt]_
echo "Hello, world!" 7yxZe4~|#
u&1n~t`
)e|Cd} 2
Eiffel f
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class HELLO_WORLD nk9Kq\2f:
gUzCDB^.:
creation qlmz@kTb
make pXPwn(
feature J6/Mm7R
make is RRig
local vULlAQG
io:BASIC_IO IwhZzw
w
do S',i
!!io w35r\x +
io.put_string("%N Hello, world!") {X<mr~
end -- make 7F.t>$'
end -- class HELLO_WORLD q}*"0r
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7
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Erlang 5fPYtVm
-module(hello). 12v5*G[X
-export([hello_world/0]). 2KMLpO&De
|5S/h{gq
hello_world() -> io:fwrite("Hello, World!\n"). /\*,|y\<
y^_'g2H
,$@nbS{Q]
Forth H[?~u+
." Hello, world!" CR ja*k\w{U'
tJo,^fdfv
zd AqGQfc
Fortran &-W5T?Sl
WRITE(*,10) 2f ]CnD0$
10 FORMAT('Hello, World!') tmiRv.Mhn<
STOP "I?sz)pxG
END 1XQJ#J1/
]8KAat~J
xnWCio>M
HTML Xm&L@2V
<HTML> ~fB}v
<HEAD> #$7 z
<TITLE> Hello World! </TITLE> X9C)FS
</HEAD> ]uO 8
<BODY> | iEhe
<p>Hello World!</p> iD,iv
</BODY> LyO ,]
</HTML> w#g0nV"X6
[?VYxX@
;xaOve;9
HQ9+ [vb>5EhL!
H /*s:ehj
L8n1p5gx3
FDM&rQ
INTERCAL 7q?u`3l
PLEASE DO ,1 <- #13 j J6Y z
DO ,1 SUB #1 <- #238 vUl5%r2O4
DO ,1 SUB #2 <- #112 J8I_tF6
DO ,1 SUB #3 <- #112 |4//%Ll/
DO ,1 SUB #4 <- #0 g9(zJ
DO ,1 SUB #5 <- #64 4Z>hP]7
DO ,1 SUB #6 <- #238 t]LCe\#
DO ,1 SUB #7 <- #26 |j53'>N[
DO ,1 SUB #8 <- #248 -Qx:-,.a
DO ,1 SUB #9 <- #168 50%
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DO ,1 SUB #10 <- #24 !U.Xb6
DO ,1 SUB #11 <- #16 =0 W`tx
DO ,1 SUB #12 <- #158 ?n)r1m
DO ,1 SUB #13 <- #52 =ZM #_uW
PLEASE READ OUT ,1 8$a4[s
PLEASE GIVE UP {Buoo~
&\8.y2=9p
*m:h0[[J
Java _l,?Y;OF
public class Hello c\~H_ ~F
{ bA\TuB
public static void main(String[] args) Q/r0p>
{ }ny,Nl
System.out.println("Hello, world!"); L'=2Uk#.D
} 5g
,u\`
} -IhFPjQ
$~c?qU
3?I^D /K^
JSP Gb+cT
<% %J4]T35^2
out.print("Hello, world!"); f2Frb
%> SvC|"-[mJ
F_;oZ
"8|y
MIXAL NfcY30}:
TERM EQU 19 the MIX console device number 7><n e|%
ORIG 1000 start address o<P@:}K
START OUT MSG(TERM) output data at address MSG :Z(?Ct&8
HLT halt execution JPL8fX-w
MSG ALF "MIXAL" lQQXV5NV
ALF " HELL" x bF*4;^SI
ALF "O WOR" ;;'b;,/
ALF "LD " Ry*NRP;
END START end of the program -}|GkTM
|qbCmsY5/
i$[wgvJIV
Nuva W Da;wt
<..直接输出..> 6ae
Hello, world! ]$(::'pmK
,t5X'sY L
<..或者..> rZ<0ks
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<. 'TpW-r:
// 不带换行 l!e8=QlJ
? "Hello, world!" l=*^FK]L`
{V%ZOdg9
// 或者 Ib.`2@o&
Im%|9g;P
// 带换行
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?? 'Hello, world!' n
m(yFX?=
.> f"Yj'`6
jfF,:(P%W
+:1ay^YI
OCaml )k0e}
let main () = 2pFOC;tl
print_endline "Hello world!";; =Run
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t$=FcKUV}f
Pascal U~Aw=h5SD
program Hello; 6"Q/Y[y
begin ,
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writeln('Hello, world!'); &3v{~Xg)
end. ; iQ@wOL]
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Y9~;6fg
Perl k9UmTvX
#!/usr/local/bin/perl [9UKVnX.V
print "Hello, world!\n"; %lNWaA
E
}|g3
w=\Lw+X
PHP VA.jt}YGE
<?php GyJp!
xFB
print("Hello, world!"); I$0`U;Xd
?> Mh'QD)28c
I2("p.+R
ie^:PcU
Pike [bkMl+:/HG
#!/usr/local/bin/pike C3-l(N1O{
int main() 0X+Jj/-ge
{ f]"][!e!,
write("Hello, world!\n"); oQ~Q?o]Ri
return 0; ,R0@`t1 p
} 8h9t8?
a*&P>Lwe7&
6"WR}S0o
PL/I gVCkj!{
Test: procedure options(main); 0TU~Q
declare My_String char(20) varying initialize('Hello, world!'); udB:ys
put skip list(My_String); #/sKb2eQ
end Test; u,[Yaw"L
)/2* <jr
jo=XxA
Prolog y=YD4m2 W
goal w( `X P
write("hello,world!"). td4*+)'FY
94I8~Jj4
@]tFRV
Python F0:Fv;
#!/usr/local/bin/python H7G*Vg
print "Hello, world!" mn\e(WoX
K2nq2Gbn
1iaNb[:QX
REXX {@g3AG%
say "Hello, world!" k#`.!yI,
O]w &uim
(rFY8oHD
Ruby CU6rw+Vax
#!/usr/bin/ruby 2N)=fBF%-
print "Hello, world!\n" % Z&[wU~
k<=.1cFh
KXcG;b[7n
Scheme 7^Uv1ezDR
(display "Hello, world!") FB@c
+*1
(newline) gqNd@tYI
V'pNo&O=
VZYdCZ&l7
sed (需要至少一行输入) E5 H6&XU
sed -ne '1s/.*/Hello, world!/p' <VB
'mpY2|]\$
#^<