“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。 oWC@w
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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》。 oze&
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以下是用不同语言写成的Hello World程序的几个例子: @ vrV*!
Ada s!}ne"&0
with Ada.Text_Io; use Ada.Text_Io; KNLfp1!
procedure Hello is nEkR1^30
begin e[/dv)J
Put_Line ("Hello, world!"); 3YFU*f,
end Hello; XAe%m^
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KjE+QUa
汇编语言 Y~(Md@!0S
<c,u3cp
x86 CPU,DOS,TASM 0Pe>Es|^A#
MODEL SMALL W>p-u6u%E|
IDEAL o)2W`i &
STACK 100H )8UWhl=
AbYqf%~7`l
DATASEG .On|uC)!
HW DB 'Hello, world!$' 5_z33,q2
OPx`u
CODESEG iIq)~e/ Z
MOV AX, @data vc+A RgvH+
MOV DS, AX fI~Xmw+}}
MOV DX, OFFSET HW Ts ^"xlK
MOV AH, 09H P}TI
q#
INT 21H mHBnC&-/
MOV AX, 4C00H T<w5vqFDu
INT 21H `P3>S(Tgy
END Qe5U<3{JZ
j"|=C$Kn/
!/3B3cG
x86 CPU,GNU/Linux,NASM !cAyTl(_
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). \&i P`v`K
;Enter this into "hello.asm" then type: D0#x
Lh
;"nasm -f elf hello.asm" !H irhDN
;"ld hello.o -o hello" 0 rXx RQ
;"./hello" [5MJwRM^!;
P5#r,:zL
section .data ;data section declaration F>-B3x
msg db 'Hello World!',0AH .G)(0z("s
len equ $-msg ;string length -:Ia^{YN
cgm~>
section .text ;code section declaration L.1_(3NG
global _start ;entry point (start of execution) ]b%Hy
_start: mov edx,len ;string length ?$6Y2
mov ecx,msg ;string start q&/Yg,p\
mov ebx,1 ;file handle: stdout NNE<L;u
mov eax,4 ;sys_write V%YiAr>
int 80h ;kernel system call IS#FiH
zOqn<Y@
mov ebx,0 ;return value !>e5z|1
mov eax,1 ;sys_exit }c`fW&
int 80h ;kernel system call _;~,Cgfi
I]Dl /
~D5\O6mU-
x86 CPU,Windows,MASM32 OQ>x5?um
.386 mysetv&5
.model flat,stdcall Rx);7j/5
option casemap:none nZ@&2YPlem
;Include 文件定义 8&3V#sn'
include windows.inc '&gF>
include user32.inc gUpb4uN
includelib user32.lib #z2rzM@/:
include kernel32.inc IuOgxm~Y
includelib kernel32.lib bLQ ^fH4ww
;数据段 I*IhwJFl/
.data 7_mw%|m6@
szCaption db 'A MessageBox!',0 =RAh|e
szText db 'Hello,world!',0 ALNc'MW!
;代码段 Ju3*lk/j-
.code 1QU:?_\6@t
start: <X7FMNr[
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 5K<5kHpvJ{
invoke ExitProcess,NULL ni6{pK4Wqm
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> zSSB>D
end start @*Wh
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1Lg-.-V
AWK y6IXd W
BEGIN { print "Hello, world!" } g|<]B$yN#
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BASIC 'C:>UlzLy
传统版BASIC(例如GWBASIC): %ix)8+Eb
DVK)2La
10 PRINT "Hello, world!" C#t'Y*
20 END 9XRZ$j}L
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或在提示符输入: |pmZ.r
LwK+:4$
?"Hello, world!":END (q4),y<:[
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现代版BASIC(例如Quick BASIC): -GqT7`:(H4
ltgc:&=|@
Print "Hello, world!" *r=:y{!Y d
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以下的语句在Quick BASIC中同样有效: Pj4/xX
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3
? "Hello,world!" h~p>re
o4%y>d)
g"?Y+j
BCPL 59%tXiO
GET "LIBHDR" wmTq` XH)
l"!Ko G7
LET START () BE \uXcLhXN
$( j~+>o[c
WRITES ("Hello, world!*N") g-e#!(
$) A%^w^f
>j'ZPwj^
e][B7wZ
Befunge /,X[k !
"!dlrow olleH">v *3&fqBg
, Ty<L8+B|
^_@ ]6{*^4kX
W3;#fa:[L
@EDs~ lPv
Brainfuck Nof3F/2 N&
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 7\9>a
+++++++++++++++.>.+++.------.--------.>+.>. `8I&7c
L
W;heO"
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C Uv?|G%cD-
#include <stdio.h> EloMe~a3
sPps q
int main(void) Wa1,
p
{ dpFVN[\oK
printf("Hello, world!\n"); ,uPJ_oZs
return 0; _^'I
} V`RNM%Y
:pF_GkG
a?6ab+7#
C++ gCN$}
#include <iostream> Qed.4R:o
4mHvgnT!WA
int main() GG0R}',0
{ *0}3t<5
std::cout << "Hello, world!" << std::endl; ^kgBa2 7
return 0; .-IkL|M
} }4{fQ`HT
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b
L]erYm
C++/CLI MzP7Py
8.
int main() z9p05NFH
{ 3 HIz9F(
System::Console::WriteLine("Hello, world!"); Rt{B(L.?<
} oh
KCdT~
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(C
8> .J1C
C# (C Sharp) ? B E6
class HelloWorldApp gi-Yqco
{ p<&Xd}]"^W
public static void Main() @0eHS+
{ <N`J`J-[
System.Console.WriteLine("Hello, world!"); #_|sgS?1
} K3' niGT
} d)[;e()
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x+h~gckLb
COBOL 1$2D O
IDENTIFICATION DIVISION. X5]TY]
PROGRAM-ID. HELLO-WORLD. `$~RxzZ g
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ENVIRONMENT DIVISION. 8UMFq
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DATA DIVISION. uu/+.9
8srBHslI
PROCEDURE DIVISION. g1UGd
DISPLAY "Hello, world!". UDe |Sb
STOP RUN. [J
C:
/c$\X<b);
.iQT5c
Common Lisp -\y-qHgb/
(format t "Hello world!~%") 'Vr$MaO
o d7]tOK9
Qf|U0
DOS批处理 nZ_v/?O
@echo off ,j?.4{rHJ
echo "Hello, world!" SR8qt z/V
tdEnk.O
37q@rDm2
Eiffel ~+H"
-+
class HELLO_WORLD -wv6s#"u
.p ls!
creation cNKUu~C+
make W>=o*{(YO
feature M@(^AK{mU
make is K YkS9_yF
local i `0v#P
io:BASIC_IO t9_E$w^U
do mCz,2K|^~
!!io ph}j[Co
io.put_string("%N Hello, world!") 8$c bVMjh
end -- make )g|xpb
end -- class HELLO_WORLD a6h>=uT [
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=X!IHd0
Erlang <|*'O5B
-module(hello). #"ftI7=42
-export([hello_world/0]). }%-t+Tf,
6 8iV/7
hello_world() -> io:fwrite("Hello, World!\n"). Nk;iiz+_p
Y2R \]FrT
]O
TH"*j
Forth E_1="&p
." Hello, world!" CR TS"D]Txs
EQe5JFR
E"|4Y(G
Fortran &5%dhc4&!&
WRITE(*,10) c DrebU
10 FORMAT('Hello, World!') /_\#zC[
STOP vMs;>lhtg
END ,WQ^tI=O
=l9T7az
SMf+qiM-E
HTML F=)&98^v$_
<HTML> `T2 <<<
<HEAD> J RPSvP\
<TITLE> Hello World! </TITLE> +y#T?!jQYj
</HEAD> W0zbxJKjd
<BODY> }K(o9$V ^!
<p>Hello World!</p> 8seBT;S
</BODY> f{lZKfrp
</HTML> 6] z}#"
)B!d,HKt;
gr-x|wK
HQ9+ y\F=ui
H =6=_/q2
%5
_J]2~b
INTERCAL *zWWmxcJa
PLEASE DO ,1 <- #13 4.K'\S
DO ,1 SUB #1 <- #238 U,lJ"$'
DO ,1 SUB #2 <- #112 >J=<bhR
DO ,1 SUB #3 <- #112 5L#M7E
DO ,1 SUB #4 <- #0 >z$|O> j
DO ,1 SUB #5 <- #64 Z3{Qtysuv3
DO ,1 SUB #6 <- #238 5UyK1e))
DO ,1 SUB #7 <- #26 xGL"N1
DO ,1 SUB #8 <- #248 (6'Hzl^ Kp
DO ,1 SUB #9 <- #168 gk%ye&:f
DO ,1 SUB #10 <- #24 !!%F$qUd\
DO ,1 SUB #11 <- #16 Wfy+7$14M
DO ,1 SUB #12 <- #158 hp}8
3.oA
DO ,1 SUB #13 <- #52 O0RQ}~$'m
PLEASE READ OUT ,1 5]+eLKXB
PLEASE GIVE UP &>{L"{
7?s>u937
*CSFkWVa
Java GssoT<Y)Z
public class Hello Mla,"~4D5
{ H5)WxsZ R
public static void main(String[] args) PeaD]
{ ~<LI p%5(
System.out.println("Hello, world!"); v)EJ|2`
} 5GP'cE
} pUx@ QyrI
rtz(Jt{<
F$C:4c
JSP C%"@|01cO
<% u Rg^:
out.print("Hello, world!"); nr;/:[F
%> me" <+6
?'r[P03
}e)ltp|
MIXAL %+}\i'j7
TERM EQU 19 the MIX console device number -xlI'gNg7
ORIG 1000 start address 9'M({/7y
START OUT MSG(TERM) output data at address MSG qm@hD>W+
HLT halt execution `(<>`
MSG ALF "MIXAL" d"a`?+(Q
ALF " HELL" .&xc2sRZ
ALF "O WOR" j!pxG5%
ALF "LD " @P/{x@J
END START end of the program o?=u#=
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u#QQCgrs
Nuva #=rI[KI
<..直接输出..> $
a7^3
Hello, world! hQO~9mQ+!
>n/QKFvV5
<..或者..> +H_Z!T.@
nS#;<p$\
<. X8<ygci+.5
// 不带换行 TkykI
? "Hello, world!" pQD8#y)` C
h#>67gJV
// 或者 JaEyVe
8dfx _kY`/
// 带换行 3:RZ@~u=
?? 'Hello, world!' iC">F.9#
.> oc.x1<Nd
(RF6K6~
;(A'XA4
6N
OCaml 4e4$AB "
let main () = $!t! =
print_endline "Hello world!";; =Ur/v'm
~W4<M:R
q4E{?
Pascal 3 D3K:K!FK
program Hello; )xU70:X
begin G[<iVt$y
writeln('Hello, world!'); TG($l2
end. DEtq]|80m
TQFD
mtp[]
Perl f|EWu
#!/usr/local/bin/perl 6K&V}
print "Hello, world!\n"; 3e"G.0vJ
f7L |Jc
Xc.~6nYp
PHP ^,50]uX_
<?php @/~41\=e
print("Hello, world!"); qe0@tKim
?> {=kA8U
ITTC}
v^pE=f*/
Pike L/shF}<
#!/usr/local/bin/pike +]
uY
int main() _-^@Jx[
{ {.sF&(e
write("Hello, world!\n"); zOcMc{w0
return 0; /bVI'fT
} }'3V(;9
WZZD
2>mDT
PL/I =
hpX2/]
Test: procedure options(main); +`ZcYLg)#
declare My_String char(20) varying initialize('Hello, world!'); xH0Bk<`V:
put skip list(My_String); tcs
Z!#
end Test;
YEGXhn5E
BZE19!
OLv(
Prolog ?/O+5rjA
goal /OZF3Pft
write("hello,world!"). c~cYN W:
6oC(09
C>LkU |[
Python #3.\}d)
#!/usr/local/bin/python ms~ mg:
print "Hello, world!" \K?3LtJ
% 'P58
z E{.oi
REXX c=7L)w:I
say "Hello, world!" yjr!8L:m
_3`{wzMA
b2z~C{l
Ruby &u8BGMl2
#!/usr/bin/ruby <yeG0`}t
print "Hello, world!\n" :R_(+EK1
pNDL:vMWP
upWq=_
Scheme B}:[~R'
(display "Hello, world!") \jC}>9
(newline) 4Vt YR
mI l_
[
yfq"atj
sed (需要至少一行输入) 0L|A
sed -ne '1s/.*/Hello, world!/p' %lvSO/F+
hhwV)Z
d6_ CsqV
Smalltalk F3+)bIz
Transcript show: 'Hello, world!' nU/v(lN
zd+8fP/UB
W8\K_M}
SNOBOL "8s0~[6S
OUTPUT = "Hello, world!" *.20YruU;j
END G|.>p<q
b"p,~{
7Rq;V=2YV
SQL ($]y*|Obn
create table MESSAGE (TEXT char(15)); 9NVe>\s_
insert into MESSAGE (TEXT) values ('Hello, world!'); fAJQ8nb{@]
select TEXT from MESSAGE; '9-8_;
drop table MESSAGE; 4e9mN~
@HR]b^2E
\4mw>8wA
Tcl sz_|py?0
#!/usr/local/bin/tcl `_<K#AG Ai
puts "Hello, world!" *V>Iv/(
U<*ZY` B3
;/$zBr`'
TScript }9jy)gF*e
? "Hello, world!" \acjv|]
Uq7 y4zJ
+
6O5hZ
Turing 'a*tee ^RS
put "Hello, world!" &c0U\G|j
OLlNCb#t
HA>b'lqBM
UNIX-style shell wR1M_&-s
程序中的/bin/sh可改为您使用的shell $TWt[
:FB#,AOa_
#!/bin/sh &p0*:(j
echo 'Hello, world!' 10{ZW@!7
+:;r} 7Zh
_a^%V9t
GUI y$7<ZBG
MWu67">"
Delphi 4$@)yZ
program HelloWorld; g6+}'MN:5
uses GRS[r@W[1
Dialogs; Zn|vT&:Hg
begin <T{PuS1<o
ShowMessage('Hello, World!'); q B5cF_
end. 7$k[cL1
,ie84o
-ZBk^p
Nuva 2.)@u~^Q
<. k|W =kt$ P
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) ~@ZdO+n?
.> f(.@]eu
X
+pU\;x
wCiDvHF5+C
Visual Basic srfFJX7*
MsgBox "Hello, world!" .5+*,+-
'或者 b9uo6u4s
Print "Hello, world!" l1^/Q~u
t59"[kQ
@
mm*S:Gt#
Visual FoxPro loVUB'OSv
? "Hello, world!" [Af&K22M(X
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