“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。 >!c Ff$2'
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 D hk$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: &?']EcU5h9
Ada cvx"XxE,
with Ada.Text_Io; use Ada.Text_Io; ZT,auSX
procedure Hello is Cn.dv-
begin Upm#:i|"
Put_Line ("Hello, world!"); #;m^DX QZn
end Hello; $lJ!f
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汇编语言 Oe^9pH,1t
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x86 CPU,DOS,TASM a(h@4 x
MODEL SMALL ':utU1dL
IDEAL UA#=K+2
STACK 100H rAgp cp}
d Z+7S`{
DATASEG DnN+W
HW DB 'Hello, world!$' "k),;1
:MH=6
CODESEG a&`^M
MOV AX, @data -7 EwZRS@9
MOV DS, AX 64:p 4N
MOV DX, OFFSET HW sr~VvciIy
MOV AH, 09H `2xt%kC
INT 21H P+3
]g{2w
MOV AX, 4C00H ]0{,P
!
INT 21H Q0Gfwl
END c{T)31ldW
F-$NoEL
bf\ Uq<&IJ
x86 CPU,GNU/Linux,NASM ]!@!qp@
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). J.0&gP V
;Enter this into "hello.asm" then type: TJ,?C$3
;"nasm -f elf hello.asm" F[fs^Q6S$
;"ld hello.o -o hello" Kke
_?/fT
;"./hello" U/7jK40
u R!'v
section .data ;data section declaration ux[13]yY
msg db 'Hello World!',0AH s2nZW pIy
len equ $-msg ;string length YT@H^=
rPHM_fW(O@
section .text ;code section declaration foI:`]2"*
global _start ;entry point (start of execution) V0gu0+u~R
_start: mov edx,len ;string length W5&KmA
mov ecx,msg ;string start lI5>d(6p
mov ebx,1 ;file handle: stdout rhN"#?
mov eax,4 ;sys_write lB|.TCbW
int 80h ;kernel system call :[Ie0[H/M
&(20*Vn,O
mov ebx,0 ;return value mUiJ@
mov eax,1 ;sys_exit (k%r_O 6
int 80h ;kernel system call pU u')y
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x86 CPU,Windows,MASM32 4&~*;an7
.386 YIYuqtnSJ
.model flat,stdcall >EgMtZ88.<
option casemap:none W7IAW7w8U
;Include 文件定义 d-]!aFj|U
include windows.inc b_@bS<wsF}
include user32.inc F<,"{L
includelib user32.lib #|Je%t}~
include kernel32.inc `oE.$~'
includelib kernel32.lib <H1e+l{8$
;数据段 V("T9g
.data K%/g!t)
szCaption db 'A MessageBox!',0 Ge76/T%{Q
szText db 'Hello,world!',0 fqol-{F.V
;代码段 Ft>,
.code AgdU@&^
start: zG&yu0;D6
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK u 0 K1n_
invoke ExitProcess,NULL QW%xwV?8
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> &hzr(v~;
end start 1w>G8
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^
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AWK k6_OP]
BEGIN { print "Hello, world!" } QO|jdlg
^ =H 10A
C7Hgzc|U
BASIC "l6Ob
传统版BASIC(例如GWBASIC): COSQ
yGb^k R}d
10 PRINT "Hello, world!" "K*^%{
20 END 6 x8lnXtA
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或在提示符输入:
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Uz7V2r%]
?"Hello, world!":END ;S+"z;$m
FFf
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现代版BASIC(例如Quick BASIC): .r-kH&)"GU
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Print "Hello, world!" U[!wu]HMF
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以下的语句在Quick BASIC中同样有效: ]tEH `Kl
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? "Hello,world!" IPnx5#eB
Ly6) ,[q~
M,P:<-J
BCPL hQDl&A
GET "LIBHDR" w{Y:p[}
W-vEh
LET START () BE X""}]@B9z
$( 6^nxw>-
WRITES ("Hello, world!*N") 4n.EA,:g:(
$) L4Si0 K
|C\XU5}
'S;l"
Befunge $60]RCu
"!dlrow olleH">v iIg99c7/&9
, ?yvjX90
^_@ Fi#b0S
U9q6m3#$
Za1VJ5-
Brainfuck RSf*[2
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< [b@9V_
+++++++++++++++.>.+++.------.--------.>+.>. F#7A6|
w;T?m,"
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C .BZ3>]F3<
#include <stdio.h> P vS\
1?T^jcny:M
int main(void) 6XGqZ!2
{ T@DT|lTI
printf("Hello, world!\n"); ww~gmz
return 0; Iy{&T#e"
} (t-JGye>
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@{8SC~ha
C++ 4> (OM|X=9
#include <iostream> C.{z+
n0=[N'Tw3
int main() j;i7.B"[
{ Dad*6;+N
std::cout << "Hello, world!" << std::endl; V?Ye^-29
return 0; K#'{Ko
} a(eUdGJ
hjY)W;
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C++/CLI FtxmCIVIV~
int main() jX{t/8v/s4
{ .tRWL!
System::Console::WriteLine("Hello, world!"); J"]P"`/
} {K+]^M
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MIWI0bnf
C# (C Sharp) '~kAsn*/
class HelloWorldApp dK?vg@|'
{ iY4FOt7\
public static void Main() NxQ+z^o\
{ o_ SR
System.Console.WriteLine("Hello, world!"); qi-!iT(fe
} {!7 ^w
} +"2IQme5
5oE!^bF?
(8OaXif
COBOL Q:!.YSB
IDENTIFICATION DIVISION. M}tr*L
PROGRAM-ID. HELLO-WORLD. CZ_ (IT7
JGKiVBN
ENVIRONMENT DIVISION. IH0qx_;P&
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DATA DIVISION. I:%O`F
Z,m;eCLG]
PROCEDURE DIVISION. M `bEnu
DISPLAY "Hello, world!". .jC-&(R
+
STOP RUN. ^ G(GjW8
Q[N6# C:(4
WD,iY_'7u^
Common Lisp c_^-`7g
(format t "Hello world!~%") 9hIcnPu
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~Fd<d[b?
DOS批处理 eZ~ZWb, %
@echo off ?Wm.'S'to
echo "Hello, world!" ?-IjaDC}
GT} =(sD L
X(ZouyD<
Eiffel N!&$fhY)
class HELLO_WORLD []rg'9B2b
6P KH%
creation 4RV5:&ALLS
make U[UjL)U
feature !mLYW
make is
Q>}*l|Ci
local I`e|[k2
io:BASIC_IO [#emm1k
do 3<nd;@:-
!!io NbtNu$%t
io.put_string("%N Hello, world!") O7z-4r
end -- make ^s&1,
end -- class HELLO_WORLD >O:j.(*!
@4N@cM0
&\, ZtaB
Erlang H%:~&_D
-module(hello). OJ:iQ
-export([hello_world/0]). P9aGDma
Pe_iA_
hello_world() -> io:fwrite("Hello, World!\n"). sA u ;i
Ph*tZrd*#
RRGCO+ )*
Forth `_{^&W
WS
." Hello, world!" CR 3+/{}rv
0 oFRcU
x!o>zT\
Fortran F(i@Gm=J]
WRITE(*,10) <e
'S'
10 FORMAT('Hello, World!') vNJ!d
STOP ?=;dNS@i@
END OJL?[<I
/M;A)z
MR@*09zP(?
HTML {-(B
<HTML> =gb.%a{R
<HEAD> Ol9'ZB|R
<TITLE> Hello World! </TITLE> wtDy-H n
</HEAD> W:^\Oe5&a
<BODY> %usy`4
2
<p>Hello World!</p> a0oM KGW:
</BODY> mG!Rh
</HTML> (bk~,n_
[C]u!\(IF
=*aun&
HQ9+ H"H&uA9"
H )h0F'MzW
pbe"
w=<
Ih]'OaE
INTERCAL I-Ya#s#m
PLEASE DO ,1 <- #13 lth t'|
DO ,1 SUB #1 <- #238 Vb`m3
DO ,1 SUB #2 <- #112 a~_5N&~pi
DO ,1 SUB #3 <- #112 OA??fb,b
DO ,1 SUB #4 <- #0 BiQ7r=Dd.
DO ,1 SUB #5 <- #64 !dVth)UV
DO ,1 SUB #6 <- #238
9I:H=5c
DO ,1 SUB #7 <- #26 (q!tI*}
DO ,1 SUB #8 <- #248 AK/_^?zA s
DO ,1 SUB #9 <- #168 xA-O?s"CY
DO ,1 SUB #10 <- #24 Pd@y+|
DO ,1 SUB #11 <- #16 *t'qn
DO ,1 SUB #12 <- #158 u:Q_XXT5
DO ,1 SUB #13 <- #52 S"iz
fQ@
PLEASE READ OUT ,1 > !thxG/_
PLEASE GIVE UP T=|oZ
rkdwGqG
LO,G2]
Java xG05OqKpE
public class Hello YY(,H!
{ gQJ y"f
public static void main(String[] args) M4rOnIJ
{ g_\U-pzr
System.out.println("Hello, world!"); 6_a42#
} hVe@:1og#
} \7QAk4I~
R <+K&_
!tkP!%w
JSP 2G'Au} q0n
<% 6e6~82t8/
out.print("Hello, world!"); <6=kwV6
%> Z?H#=|U
8m0GxgS
F)mlCGv:R
MIXAL 15i8) 4h
TERM EQU 19 the MIX console device number `Trpv$
ORIG 1000 start address 3_JxpQg
START OUT MSG(TERM) output data at address MSG E"e <9
HLT halt execution 0^VA,QkQ\
MSG ALF "MIXAL" 5+<<:5_6l
ALF " HELL" Zb)j2Xgl
ALF "O WOR" XY]|OZ7(
ALF "LD " @<5?q:9.8
END START end of the program 0s"g%gq|
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Ng=q
>z*2Og#1
Nuva rULrGoM
<..直接输出..> kDM\IyM<\
Hello, world! }VlX!/42
Yl[GO}M
<..或者..> ALqP;/
V#:`:-$$+
<. {c|=L@/
// 不带换行 D}1Z TX_
? "Hello, world!" !JtVp&?
0#~e KFy
// 或者 H]5%"(h
**L . !/
// 带换行 K~p\B
?? 'Hello, world!' d^"<Tz!
.> 2<jbNnj
KXEDpr
I4kN4*d!N,
OCaml tH0=ysf
let main () = `}/&}Sp
print_endline "Hello world!";; VY)!bjW.
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aZGX`;3
Pascal \8%64ZL`
program Hello; FI1R7A
begin q(0V#kKC
writeln('Hello, world!'); Yb8o`j+t
end. [bd fp
a
yk1syN_
XkZ82w#b
Perl @G0k+
#!/usr/local/bin/perl RI_:~^nO{r
print "Hello, world!\n"; lg_X|yhL
tgn_\ - +
@#q>(Ox%
PHP |A".Mo_5
<?php *Z"9Q X
print("Hello, world!"); W-9^Ncp
?> 0;,4.hsh
bq5tEn
&DC
o;Ij;
Pike q y1$(3t$
#!/usr/local/bin/pike q.6$-w
int main() {8Jr.&Y2
{ nd(O;XBI
write("Hello, world!\n"); Ay'2!K,I
return 0; -=aI!7*"$
} *k:Sg*neVq
gz6BfHQG
G*_$[| H
PL/I ^a~^$PUqI
Test: procedure options(main); ~W'>L++
declare My_String char(20) varying initialize('Hello, world!'); \^9SuZ
put skip list(My_String); uop|8n1
end Test; f5jxF"oGNo
_
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f6x}M9xS%
Prolog ]*a3J45
goal iOI8'`mk
write("hello,world!"). )En*5-1
h~rSM#7m
ydOJ^Yty
Python j,")c'r&dD
#!/usr/local/bin/python .Cfi/
print "Hello, world!" n:cre}0.
$ qk2!
c?;~Z
REXX }ie\-V
say "Hello, world!" k
9 Xi|Yj
ml$"C
zCxr]md
Ruby {S4^;Va1
#!/usr/bin/ruby "*O(3L.c-
print "Hello, world!\n" F.i%o2P3
fI@4 v\
D~W1["[
Scheme ~ow_&ftlo
(display "Hello, world!") D6
B(6
5Y
(newline) J8[N!qDCj
^nn3;
1Ao YG_
sed (需要至少一行输入) a=3?hVpB
sed -ne '1s/.*/Hello, world!/p' /*DC`,q
J{"<Hgb
YK Nz[x$|
Smalltalk Jwzkd"D
Transcript show: 'Hello, world!' <igsO
]F[ V6`H
iXpLcHi
SNOBOL \Ub=Wm\
OUTPUT = "Hello, world!" >D'Kt?L<]m
END _h1n]@
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C.M]~"e
SQL Y <;A989D
create table MESSAGE (TEXT char(15)); 8w &