“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。 >`,v?<>+
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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》。 WMh'<'wN_
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以下是用不同语言写成的Hello World程序的几个例子: w[4SuD
Ada \2eYw.I=
with Ada.Text_Io; use Ada.Text_Io; }})4S;j
procedure Hello is <| Z0|sel
begin ,EwJg69
Put_Line ("Hello, world!"); -cq ~\m^6
end Hello; Of([z!'Gc
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汇编语言 ua7I K~8l
~}4H=[Zu
x86 CPU,DOS,TASM nwcT8b87J
MODEL SMALL 8Bhot,u'T
IDEAL s8eiq`6\H}
STACK 100H
36Wuc@<H
F)DL/';
DATASEG H@aCo(#
HW DB 'Hello, world!$' &\!-d%||)
B*DH^";t
CODESEG {6/%w,{,
MOV AX, @data /xsa-F
MOV DS, AX #docBsHX&s
MOV DX, OFFSET HW Dq2eX;c@
MOV AH, 09H 1Rp|*>
INT 21H 7M*+!al9
MOV AX, 4C00H YWq[)F@0G
INT 21H `4;<\VYCr
END jX+LI
:Q\h'$C
to:hMd1T
x86 CPU,GNU/Linux,NASM _DJ0MR~3
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 5l(;+#3y/
;Enter this into "hello.asm" then type: OtQKDpJq
;"nasm -f elf hello.asm" UK&E#i
;"ld hello.o -o hello" /!AdX0dx
;"./hello" b[RBp0]x
ch :428
section .data ;data section declaration %@pTEhpF
msg db 'Hello World!',0AH g08=D$P
len equ $-msg ;string length k"Sw,"e>+
#"7:NR^H^
section .text ;code section declaration C:
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global _start ;entry point (start of execution) xn}'!S2-b
_start: mov edx,len ;string length CB?.|)Xam
mov ecx,msg ;string start ~@got
mov ebx,1 ;file handle: stdout W"!nf
mov eax,4 ;sys_write 06Uxd\E~
int 80h ;kernel system call ;iS}<TA
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mov ebx,0 ;return value R
8Iac[N
mov eax,1 ;sys_exit =4Ex'
%%(U
int 80h ;kernel system call :B=`^>RK
fJ\Ys;l[j
^ /g&Q
x86 CPU,Windows,MASM32 n,Ux>L
.386 *?KQ\ Y
.model flat,stdcall T6phD8#
option casemap:none Kh% x
;Include 文件定义 SB
\ptF
include windows.inc ]]`+aF0
include user32.inc D 3Int0n
includelib user32.lib NPS=?5p>
include kernel32.inc \nxt\KD
includelib kernel32.lib Y{p *$
;数据段 AA05wpu8
.data wz6e^ g
szCaption db 'A MessageBox!',0 [N7[%iQ%
szText db 'Hello,world!',0 AvV.faa
;代码段 p=405~
.code WtlIrdc
start: C<n.C*o
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Ho"FB|e
invoke ExitProcess,NULL 9"V27"s
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 8E0Rg/DnT
end start KE5f`h
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AWK 0U$6TDtmE
BEGIN { print "Hello, world!" } X.UIFcK^
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BASIC 1p8E!c{}j
传统版BASIC(例如GWBASIC): %FF
S&vd
5#2vSq!H
10 PRINT "Hello, world!" 1/#N{rZ
20 END eY&UFe
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或在提示符输入: +Z{4OJK
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?"Hello, world!":END 93'%aSDI%
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现代版BASIC(例如Quick BASIC): Q&F@[k
$6'xRUx X
Print "Hello, world!" h+$_:](PC
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以下的语句在Quick BASIC中同样有效: aMz%H|/$
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? "Hello,world!" @cjhri|vH
:Z< 5iLq
xaeY^"L
BCPL UiYA#m
GET "LIBHDR" *~:@xMa
;UWdT]>!?
LET START () BE nt5 ~"8
$( jR/X}XQtY
WRITES ("Hello, world!*N") z%;\q$
$) {yG)Ii
8D+OF 6CM
<MfB;M
Befunge z5{I3 Y!1
"!dlrow olleH">v <o]tW4\(R
, BtqJkdK!;1
^_@ ;V%lFP3#
f}+G;a9Nj
sxsM%Gb?H
Brainfuck cF/FretoO
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ^|sQkufo
+++++++++++++++.>.+++.------.--------.>+.>. 'Y&yt"cs
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@9c^{x\4
C Ok* :;G@
#include <stdio.h> PGw"\-F
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int main(void) H-rf?R2
{ *2>%>qu
printf("Hello, world!\n"); Stp??
return 0; o#+!H!C.O
} |"@E"Za^
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C++ NGxii$F
#include <iostream> h 1Q7(8=Eg
9#3+k/A
int main() ^SjGNg^ 7D
{ JdV!m`XpXy
std::cout << "Hello, world!" << std::endl; z2dM*NMK
return 0; pCC0:
} RL&*.r&
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C++/CLI H?aB8=)
int main() jn+0g:l
{ "`3H0il;<
System::Console::WriteLine("Hello, world!"); W"2\vo)
} ),~Ca'TU
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kKj YMYT6
C# (C Sharp) 3Y s|M%N
class HelloWorldApp f5yd2wKy6
{ FF/MTd}6qG
public static void Main() 6?KsH;L9
{ {2q
System.Console.WriteLine("Hello, world!"); F.\]Hqq
} ++kiCoC
} F^aD!O ~
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COBOL 9:kb0oBa?l
IDENTIFICATION DIVISION. 8F@6^9C
PROGRAM-ID. HELLO-WORLD. (Ux%7H_d
$ &^
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ENVIRONMENT DIVISION. yx}:Sgv%
`V?{
DATA DIVISION. >Ek`PVPD
k(7!W
PROCEDURE DIVISION. >*_?^F_
DISPLAY "Hello, world!". )pvZM?
STOP RUN. $GPA6
j&&^PH9ZY
ct]5\g?U'
Common Lisp Y] n^(V
(format t "Hello world!~%") 4+W}TKw
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"Srp/g]a
DOS批处理 N7M^
@echo off )q=1<V44d
echo "Hello, world!" JRo{z{!O6
V,Gt5lL&/!
aI\VqOt]
Eiffel -I|yi'
class HELLO_WORLD tb=(L
<<`."RY#0
creation RSnK`N\9jb
make /stED{j,
feature `Y[zF1$kz^
make is M9N|Ql
local _{b a
io:BASIC_IO |_ @iaLE
do gVD!.
!!io $Z(zO;k.
io.put_string("%N Hello, world!") r*3;gyG.,#
end -- make m.$Oo
Mu'
end -- class HELLO_WORLD {-E{.7
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gr2zt&Z4
Erlang O-G@To3\
-module(hello). iA < EJ
-export([hello_world/0]). eR}d"F4W
RM`8P5i]sF
hello_world() -> io:fwrite("Hello, World!\n"). 62zlO{ >rJ
kO5KZ;+N-
U{R*WB b
Forth y=&)sq
." Hello, world!" CR k9bU<
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FINM4<s)
Fortran 7'o?'He-.2
WRITE(*,10) yrIT4y
10 FORMAT('Hello, World!') 95+}NJ;r
STOP \l[5U3{
END yy>4`_
@-7K~in?^
1X{A}9nA
HTML "RG.vo7b
<HTML> &{
f5F7E@
<HEAD> FIS-xpv$
<TITLE> Hello World! </TITLE> ~pw_*AN
</HEAD> #._!.P
<BODY> dk.da&P
<p>Hello World!</p> G +YF
</BODY> JLeV@NO
</HTML> G%6wk=IH
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o!~1
a;lCr|*
HQ9+ `=\G>#p<T
H 7i'vAOnw^
zxj!ihs<
&,#VhT![
INTERCAL P"% /
PLEASE DO ,1 <- #13 [oYe/<3
DO ,1 SUB #1 <- #238 \myj Y
DO ,1 SUB #2 <- #112 N-NwGD{
DO ,1 SUB #3 <- #112 )HU?7n.{
DO ,1 SUB #4 <- #0 ~\Ynih
DO ,1 SUB #5 <- #64 &B3kzs
DO ,1 SUB #6 <- #238 .f6_[cS;g
DO ,1 SUB #7 <- #26 SGbo|Xe7:
DO ,1 SUB #8 <- #248 3Fr}8Dy
DO ,1 SUB #9 <- #168 PffwNj/l
DO ,1 SUB #10 <- #24 K'71uW>
DO ,1 SUB #11 <- #16 L@+j8[3BX
DO ,1 SUB #12 <- #158 ^L[Z+7|
DO ,1 SUB #13 <- #52 jQ[Z*^"}
PLEASE READ OUT ,1 7kb`o
y;(^
PLEASE GIVE UP 5Ut0I]h|z
* T~sR'K+|
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Java AUN Tc3
public class Hello nbYaYL?&
{ 0~-+5V
public static void main(String[] args) mq
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{ A#p@`|H#B
System.out.println("Hello, world!"); 1%+0OmV&
} Llzowlf e
} P"~B2__*
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%k2zsM
JSP X~R
qv5@-
<% LyQO_mT2
out.print("Hello, world!"); rDSt
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%> 0xjV*0?s
2R_k$kHl
G{s ,Y^
MIXAL $4?%Z>'
TERM EQU 19 the MIX console device number k20H|@g2
ORIG 1000 start address 8G@FX $$Q
START OUT MSG(TERM) output data at address MSG [6D>2b}:{[
HLT halt execution t ?{B*
MSG ALF "MIXAL" x^;nfqn|
ALF " HELL" JD>!3>S)?
ALF "O WOR" |W::\yu6
ALF "LD " +\E\&^ZQ
END START end of the program Oc8+an1m
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1ri#hm0x\
Nuva &iSQ2a!l8b
<..直接输出..> Wd%j;glG
Hello, world! h&Sl8$jVp
>LNl8X:Cz*
<..或者..> FKzqJwT
}\irr9,
<. y"]> Rr
// 不带换行 n^A=ar.
? "Hello, world!" AfY(+w6!K
:@p`E}1r{
// 或者 nd?m+C&W
Sj*H4ZHD<&
// 带换行 < ^&'r5H
?? 'Hello, world!' sO*6F`eiZ
.> "y`?KY$[N
00Rk %QV
o]FQ)WRB
OCaml 'z\F-Ttq
let main () = fHgfI@{=j
print_endline "Hello world!";; v|e\o~2D`
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WRnUF[y+)
Pascal K}zw%!ex
program Hello; >y=%o~
begin w8on3f;6n#
writeln('Hello, world!'); UC0 yrV
end. #2dmki"~(
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Ky=&C8b<
Perl i0R=P[
#!/usr/local/bin/perl ' ZB%McS
print "Hello, world!\n"; f]hW>-B(q
(Hsfrc
.!`j3W]
PHP ,rN7X<s54
<?php >s>5k
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print("Hello, world!"); N
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?> Z,2uN!6
(thzWr6;
`?>OY&(
Pike hIw*dob
#!/usr/local/bin/pike B U)4g[4
int main() HgMDw/D(
{ VP"L_Um
write("Hello, world!\n"); 7j]@3D9[:p
return 0; {k)MC)%
} wg[*]_,a
I7TMv.
'3xSzsDn
PL/I x^
Wgo`v)
Test: procedure options(main); ,p2
Di
declare My_String char(20) varying initialize('Hello, world!'); duM>(y
put skip list(My_String); ,5/gNg
end Test; \gzNMI*
g_q{3PW.
eD/?$@y
Prolog EEaFi8
goal |GsLcUv6
write("hello,world!"). Qejzp/2
yZ2,AR%
2vur_`cV
Python BvYJ!Vj
#!/usr/local/bin/python d9^h
YS{
print "Hello, world!"
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e]5QqM7
$`riB$v
REXX eC3ZK"oJ
say "Hello, world!" 4RK^efnp
sPhh#VCw{
*
5j iC
Ruby ycH=L8
#!/usr/bin/ruby 4u;W1=+Vn
print "Hello, world!\n" s5[ Cr"q7B
*AJW8tIP
M^bujGD
Scheme yNqrL?i
(display "Hello, world!") mO\6B7V!
(newline) Hu;#uAnxQ
@Pa ;h
!W6]+
sed (需要至少一行输入) oZIoY*7IrQ
sed -ne '1s/.*/Hello, world!/p' ;Z8K3p
e06r5%|.%
uYs+xX_
Smalltalk g.veHh|;_
Transcript show: 'Hello, world!' tn}9(Oa)
BO1Mz=q
z7GLpTa
SNOBOL }96^OQPE
OUTPUT = "Hello, world!" Q!@"Y/
END x&kF;UC
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pV1~REk$&
SQL [aIQ/&