“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。 <dVJV?i;
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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》。 W|E %
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以下是用不同语言写成的Hello World程序的几个例子: #_K<-m%9
Ada K3WaBcm
with Ada.Text_Io; use Ada.Text_Io; gLFTnMO
procedure Hello is JvP>[vb
begin <R~;|&o,$
Put_Line ("Hello, world!"); #W.vX=/*
end Hello; paMK]-
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汇编语言 x&+&)d
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x86 CPU,DOS,TASM *XYp~b
MODEL SMALL Z( "-7_
IDEAL .LnknjC
STACK 100H 5:5d=7WX
^
uwth
DATASEG <Ter\o5%
HW DB 'Hello, world!$' <9:~u]ixt
9d( M%F
CODESEG (J%>{?"ij
MOV AX, @data 6hcK%0z
MOV DS, AX @o#Yq
n3Y
MOV DX, OFFSET HW =1VZcLNt
MOV AH, 09H rQ2TPX<?a
INT 21H !mB
`F C
MOV AX, 4C00H C?W}/r[
INT 21H 1{a4zGE?[
END p8?"}
nqTOAL9FF
z[O*f#t
x86 CPU,GNU/Linux,NASM vCK+v
r!
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). KDV.ZSF7
;Enter this into "hello.asm" then type: a0 PU&o1EF
;"nasm -f elf hello.asm" \[)SK`cwd
;"ld hello.o -o hello" .yD
6$!6
;"./hello" l]Ym)QP
5j0 Ib>\
section .data ;data section declaration Fq
oh!F
msg db 'Hello World!',0AH Gxxz4
len equ $-msg ;string length |YV> #l
e"{"g[b/7
section .text ;code section declaration {^:NII]
global _start ;entry point (start of execution) EQw7(r|v:
_start: mov edx,len ;string length Di}M\!-[
mov ecx,msg ;string start !;d>}iE
mov ebx,1 ;file handle: stdout rO{?.#~
mov eax,4 ;sys_write 8Z"f"
int 80h ;kernel system call v9KsE2Ei
P&@,Z#\
mov ebx,0 ;return value ]|=`-)AP3
mov eax,1 ;sys_exit lkR^2P
int 80h ;kernel system call Of$R+n.
V\]j^$
@t*D<B$
x86 CPU,Windows,MASM32 ukc
7Z
OQ
.386 Tow! 5VAM
.model flat,stdcall ~_F;>N~
option casemap:none T(]*jaB
;Include 文件定义 0*oavY*
include windows.inc 02NVdpo[wU
include user32.inc 4sBvW
includelib user32.lib E $W0HZ'
include kernel32.inc .)p%|A#^
includelib kernel32.lib K)+]as
;数据段 ~t$ng l$
.data {{>,c}O /
szCaption db 'A MessageBox!',0 /eXiWa sQ
szText db 'Hello,world!',0 WSv%Rxr8L
;代码段
s_+.xIZ
.code F;kKn:X L
start: )`ixT)
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK C@zG(?X
invoke ExitProcess,NULL N^PkSf[)h5
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> s1#A0%gx
end start bKzG5|Qu
D&G?Klq
Uq{$j5p8
AWK 1wdc4>
BEGIN { print "Hello, world!" } ~Eb:AC5
v<<ATs%w
_g( aO70Zu
BASIC wi+L4v
传统版BASIC(例如GWBASIC): Yo=$@~vN]
[F;\NJp6?^
10 PRINT "Hello, world!" mE>{K
20 END Tr|PR t
H Vhd#Q;
或在提示符输入: UugR
BSB&zp
?"Hello, world!":END qbCU&G|)
f1elzANy
现代版BASIC(例如Quick BASIC): :PY6J}:
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Print "Hello, world!" [u^ fy<jdp
{.[EX MX
以下的语句在Quick BASIC中同样有效: G-K{
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? "Hello,world!" ur=:Ha
mW+5I-~
4sRg+mMI
BCPL }m%&|:PH
GET "LIBHDR" $/5\Hg1
eOkiB!G.
LET START () BE nHQ*#&$
$( S#He OPRL
WRITES ("Hello, world!*N") @'GPZpbvZ
$) F?6Q(mRl
(NDC9Lls
J4U_utp
Befunge hx8pg,X
"!dlrow olleH">v Tp.]{*
, .3V L
^_@ e>.^RtDF
%hw4IcWJ|
KIR3m
)
Brainfuck {D :WXvI
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< !<VP[%2L~
+++++++++++++++.>.+++.------.--------.>+.>. 2Ub-ufkU
Li0+%ijM
i gjn9p&_
C 5K682+^5
#include <stdio.h> v&7<f$5
8 4reyA
int main(void) .3XiL=^~Qp
{ rnp; R
printf("Hello, world!\n"); f&$;iE
return 0; f#m@eb
} 4,h)<(d{
8;c\}D
Qp)?wny4
C++ |`Yn'Mj8rm
#include <iostream> tX@y ]"
_T~&kwe
int main() VAUd^6Xdwx
{ I>vU;xV\m
std::cout << "Hello, world!" << std::endl; 0dS (g&ZR
return 0; ?m7i7Dz
} 2G!z/OAj
9HiyN>(
<Kr`R+Q$DN
C++/CLI ADB)-!$xoi
int main() O;McPw<&\:
{ 2@pEiq3
System::Console::WriteLine("Hello, world!"); "xHK*
} U 0~BcFpD
{D(l#;,iX2
Qt_KUtD
C# (C Sharp) MtF0/aT
class HelloWorldApp lcy+2)+
{ qwnVtD
public static void Main() J kAd3ls
{ 9^N(s7s
System.Console.WriteLine("Hello, world!"); s|c}9/Xe)
} OpU9:^r
} bj 8pqw|;
z7L+wNYwg
!wfUD2K1
COBOL .f;@OqU
IDENTIFICATION DIVISION. %H&WihQ
PROGRAM-ID. HELLO-WORLD. =_g#I
ips)-1
ENVIRONMENT DIVISION. p[At0Gc
L
V
EsM
DATA DIVISION. Dd/]?4
r|\{!;7
PROCEDURE DIVISION. -e_TJA
DISPLAY "Hello, world!". =5fY3%^b{
STOP RUN. YO?o$Hv16
ht>/7.p]
x>BFK@#
Common Lisp )b=vBs`%
(format t "Hello world!~%") s6(md<r
_/cX!/"
QlR~rFs9t
DOS批处理 .]zZw B
@echo off C2=PGq
echo "Hello, world!" iQG]v[$
GBR$k P
B"#pvJN
Eiffel <|X+T,
class HELLO_WORLD f?eq-/U R
w2/3[VZ}l
creation )K$xu (/K
make hu"-dT;4]
feature 0`p"7!r
make is !
9*l!(
local &(Hw:W9
io:BASIC_IO /-^J0f+l3
do s"w^E\>6
!!io GE=S.P;
io.put_string("%N Hello, world!") @"/H
er
end -- make '73}{" '
end -- class HELLO_WORLD
t]]Ig
0:4>rYBC
$^czqA-&
Erlang ][V`ym-e
-module(hello). 0c!^=(
-export([hello_world/0]). KD+&5=Y
Bj><0
cNF
hello_world() -> io:fwrite("Hello, World!\n"). 0raFb,6l
BI*0JKQu
I!u=.[5zdC
Forth
&0|Z FXPd
." Hello, world!" CR 1uG)U)y/Q
#r?[@aJ
Pec Zuv
Fortran PU1YR;[Fe
WRITE(*,10) F6Q%<p a
10 FORMAT('Hello, World!') 8'TIDu
STOP 7P*\|Sxk%
END t98S[Z(-%+
+_S0
GVn'p
Wg
HTML 7
<]YK`a2d
<HTML> n6Uf>5
<HEAD> <
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<TITLE> Hello World! </TITLE> wmXI8'~F&
</HEAD>
z-g6d (
<BODY> ;1nXJ{jKw
<p>Hello World!</p> +|pYu<OY
</BODY> iCh8e>+
</HTML> rLmc(-q
7,Z<PE
ZHeq)5C ;f
HQ9+ ;/?w-)n?
H #<sK3 PT
'|5o(6u'
y x#ub-A8
INTERCAL r%X
M`;bQX
PLEASE DO ,1 <- #13 #^9k&t#!6
DO ,1 SUB #1 <- #238 Xc"
%-
DO ,1 SUB #2 <- #112 =OPX9oG
DO ,1 SUB #3 <- #112 ! os@G
DO ,1 SUB #4 <- #0 > mJ`904L
DO ,1 SUB #5 <- #64 'X6Y!VDd
DO ,1 SUB #6 <- #238 P(Zj}tGN
DO ,1 SUB #7 <- #26 8==M{M/eM
DO ,1 SUB #8 <- #248 k W
8>VnW
DO ,1 SUB #9 <- #168 2P@6Qe
?
DO ,1 SUB #10 <- #24 >JY\h1+ H
DO ,1 SUB #11 <- #16 ru`U/6n
DO ,1 SUB #12 <- #158 3#]II j`\
DO ,1 SUB #13 <- #52 >m<T+{`
PLEASE READ OUT ,1 E?KPez
PLEASE GIVE UP }fo_"bs@
aE3eYl9u
]$^HGmP
Java ME]89 T&
public class Hello mQ`2c:Rn&7
{ =e PX^J*M'
public static void main(String[] args) -m>3@"q
{ R-OO1~W=
System.out.println("Hello, world!"); 8d Fqwpw8
} Yhm veV
} WDV=]D/OE
6d/v%-3
+s;Vfc$b]H
JSP hmG8
{h/
<% ~ QohP`_
out.print("Hello, world!"); 5ZH3}B^L$
%> Y{#*;p*I
+(afO~9
S+wT}_BQ
MIXAL ~%M*@fm
TERM EQU 19 the MIX console device number dw5"}-D
ORIG 1000 start address )uR_d=B&
START OUT MSG(TERM) output data at address MSG +c
C.
ZOS
HLT halt execution 8JF<SQ
MSG ALF "MIXAL" >BK/HuS
ALF " HELL" kw gLK@@%1
ALF "O WOR" `VUJW]wGu
ALF "LD " x^pt^KR;
END START end of the program #G`K<%{?f
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H8dS]N~[Y
Nuva :i0;jWcb
<..直接输出..> 3^fwDt}
Hello, world! }gt)cOaY
g"m9[R=]6
<..或者..> &HAu;u@
d8+@K&z|
<. dKU:\y
// 不带换行 .8%b;b
? "Hello, world!" "X;5*
4+
[uHC
AP
// 或者 9rT^rTV
-{9mctt/gE
// 带换行 ;bg]H >$U7
?? 'Hello, world!' Sf.OBU1rs
.> wQd8/&mmk
dPf7o
+TaxH;
OCaml yqL" YD
let main () = oJ3(7Sz
print_endline "Hello world!";; <-n^h~,4
TBOg.y]
r%iFsV_
Pascal Kz/,V6H:
program Hello; S^==$TT
begin mf{M-(6'
writeln('Hello, world!'); _`^AgRE
end. d6JW"
qz3
Z'
Meep
Perl *l"CIG'
#!/usr/local/bin/perl zn&ZXFgN
print "Hello, world!\n"; ePJ_O~c
qq<T~^
WcY_w`*L
PHP 42 lw>gzr!
<?php @|wU
@by{
print("Hello, world!"); 4KR`
?> )1Y?S;
lz<'
L.
.
8Q)|8xpYS
Pike w $-q&
#!/usr/local/bin/pike bolG3Tf|
int main() Aaq%'07ihW
{ I=<Qpd4
write("Hello, world!\n"); i '*!c
return 0; n^hkH1vY
} >1Hv c7DP
8zlvzp
G7v<Q,s
PL/I iDl#foXa`
Test: procedure options(main); oPni4^g i
declare My_String char(20) varying initialize('Hello, world!'); zaLPPm&f
put skip list(My_String); DQP!e6Of
end Test; W SxoGly
srAWet
~TS!5Wiv
Prolog 8]b;l; W5
goal kV T |(Y
write("hello,world!"). Sa[lYMuB
y?O-h1"3,
DbFe;3
Python 6jgP/~hP>N
#!/usr/local/bin/python "9QZX[J|*
print "Hello, world!" \ ~+b&
!uIY ,
vWM&4|Q1~
REXX 0,0Z!-Y
say "Hello, world!" 'Q :%s
uYg Q?*Z
4
?PB
Fbd
Ruby PlS)Zv3
#!/usr/bin/ruby -qaO$M^Q
print "Hello, world!\n" 0#8, (6
;]m;p,$
32SkxcfrCK
Scheme )AR-b8..o
(display "Hello, world!") :A @f[Y'9
(newline) )[ZXPD
T$R#d&t
VV}"zc^
sed (需要至少一行输入) f+s)A(?3
sed -ne '1s/.*/Hello, world!/p' #V]8FW
|gu@b~8
_b-g^#L%
Smalltalk W'"?5} (
Transcript show: 'Hello, world!' )uo".n|n~B
3%GsTq2o
$|J+
SNOBOL 7 L,`7k|
OUTPUT = "Hello, world!" 6Y,&