“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。 FCO5SX#-g
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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》。 zQY|=4NP
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以下是用不同语言写成的Hello World程序的几个例子: Qn`$xY9mT
Ada iaShxoIV
with Ada.Text_Io; use Ada.Text_Io; gT 8^
procedure Hello is } Ej^M~Vv
begin 00s&<EM
Put_Line ("Hello, world!"); )na8a!
end Hello; 7PE3>cD
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汇编语言 qf7:Q?+.|
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x86 CPU,DOS,TASM jET$wKw%
MODEL SMALL d GEMrjx
IDEAL iCA!=%M@D
STACK 100H C'~K am S
&=bWXNU.
DATASEG j#KL"B_A
HW DB 'Hello, world!$' {O\>"2}m'f
?,Z[)5 ZN
CODESEG -mD<8v[F
MOV AX, @data f5)4H
MOV DS, AX cW+6Emh
MOV DX, OFFSET HW ZM)Y Rdh
MOV AH, 09H 'n'83d)z
INT 21H LR :Qb]|"
MOV AX, 4C00H :^
9sy
INT 21H &{#4^.Q
END Sw##C
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x86 CPU,GNU/Linux,NASM PbR6>'
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). _Ju@<V$
;Enter this into "hello.asm" then type: 2^-Z17Z}
;"nasm -f elf hello.asm" @S#>:o|
;"ld hello.o -o hello" hVvPI1[2
;"./hello" Z<7FF}i
j@OGl&'^-
section .data ;data section declaration \5g7_3,3W
msg db 'Hello World!',0AH %;5AF8# c
len equ $-msg ;string length OyTE d5\3
lZyxJDZ A
section .text ;code section declaration t- Rp_2t
global _start ;entry point (start of execution) ?Bg<74
_start: mov edx,len ;string length ` oBlv
mov ecx,msg ;string start REd"}zDI
mov ebx,1 ;file handle: stdout ?QzA;8H
mov eax,4 ;sys_write Z#8O)GK
int 80h ;kernel system call YyI4T/0s_
b"`Vn,
mov ebx,0 ;return value :mwNkT2et
mov eax,1 ;sys_exit qw]:oh&G
int 80h ;kernel system call 1UR;}
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x86 CPU,Windows,MASM32 R-v99e iN
.386 ^:JZ.r
.model flat,stdcall F"7dN *7
option casemap:none $s]c'D)
;Include 文件定义 ]k2Jf}|
include windows.inc jI`1>>N&1
include user32.inc aBV{Xr~#(
includelib user32.lib %m\dNUz4g
include kernel32.inc ,^dyS]!d$
includelib kernel32.lib _J<^'w^;%
;数据段 P%Fkd3e+
.data o)NQE?
szCaption db 'A MessageBox!',0 =M]f7lJ
szText db 'Hello,world!',0 D@[Mk"f
;代码段 _O!)aD
.code P#`Mg@.
start: < 8yv(
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK O0?.$f9 s
invoke ExitProcess,NULL NL})_.Og
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ],rtSUO
end start >eHSbQu/Bu
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BEGIN { print "Hello, world!" } (h8M
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BASIC @=KuoIV
传统版BASIC(例如GWBASIC): z6B(}(D
J\iyc,M<M
10 PRINT "Hello, world!" mp2J|!Lx
20 END eT??F
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或在提示符输入: kj(Ko{
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?"Hello, world!":END 0>#or$:6E
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现代版BASIC(例如Quick BASIC): ; aA,H&
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Print "Hello, world!" -i``yf?P
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以下的语句在Quick BASIC中同样有效:
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? "Hello,world!" )9sRDNr
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BCPL }{Y)[w#R
GET "LIBHDR" OoKzPePWji
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LET START () BE QN=a{
$( (;1FhIi&
WRITES ("Hello, world!*N") :[#g_*G@p
$) imcq
H
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hQ!sl O
Befunge ~RSOUrR
"!dlrow olleH">v lWj|7
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^_@ K/;FP'.
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Brainfuck &
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++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< K-Bf=7F,
+++++++++++++++.>.+++.------.--------.>+.>. J(*QtF
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C Ux_ tHyc/
#include <stdio.h> T(@y#09
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int main(void) =ogzq.+|
{ .k5
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printf("Hello, world!\n"); }V.Wp6"S
return 0; et|P5%G
} =j[zMO
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C++ %1Gat6V<'
#include <iostream> wN,DTmtD
m=&j2~<i
int main() ..yuEA
{ &Mz3CC6
std::cout << "Hello, world!" << std::endl; y7#$:+jQv
return 0; O!+LM{>
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} M7"I]$|\
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C++/CLI [u[`!L=
int main() #W#GI"K
{ aVv$k
System::Console::WriteLine("Hello, world!"); f(.@]eu
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} reml|!F-)
Sfc0 ~1
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C# (C Sharp) srfFJX7*
class HelloWorldApp .5+*,+-
{ D8P<mIu}Y
public static void Main() `_Bvaej?,
{ |He,v/r
System.Console.WriteLine("Hello, world!"); l,}{Y4\G
} KE\p|X i
} &.ZW1TxE8
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XHuY'\;-
COBOL g]|K@sm
IDENTIFICATION DIVISION. n*-t
=DF
PROGRAM-ID. HELLO-WORLD. T^h;T{H2
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ENVIRONMENT DIVISION. M0`nr}g
& f7 {3BK
DATA DIVISION. [.DSY[!8U
(A2x
PROCEDURE DIVISION. @xR7>-$0p
DISPLAY "Hello, world!". )e.Y"5My
STOP RUN. 6zK8-V?9F
*OU>s;"$
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Common Lisp SdhdXVZ
(format t "Hello world!~%") <1[W Nj2[
Ws?BAfP
$,ev <4I&
DOS批处理 {GDMix
@echo off A#~"Gp
echo "Hello, world!" zmkqqiDp_
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@AUx%:}0Y:
Eiffel l c)*HYqU
class HELLO_WORLD ^.Cfa
03?TT,y$
creation =jdO2MgSg*
make ^,zE Nqg7
feature qq}EXq ^
make is }OO(uC2
local vlCjh! x
io:BASIC_IO fLK*rK^{"
do a5WVDh,cR
!!io vTN/ho,H
io.put_string("%N Hello, world!") DX.u"&Mm
end -- make 7"F
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end -- class HELLO_WORLD \dj&4u3
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Erlang L%`~`3%n-
-module(hello). CBx 1.xL
-export([hello_world/0]). y
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hello_world() -> io:fwrite("Hello, World!\n"). _3<J!$]&p
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:@w
;no>=*
Forth 21GjRPs\
." Hello, world!" CR 0-"ps ]X
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Fortran 2%0zPflT
WRITE(*,10) uyP)5,
10 FORMAT('Hello, World!') /6}4<~~4TA
STOP ?RGL0`Lg
END y [e$
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HTML i' J.c4
<HTML> kRNr`yfN
<HEAD> c38RE,4U
<TITLE> Hello World! </TITLE> 5%kt;ODS
</HEAD> %cG6=`vR
<BODY> zR
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<p>Hello World!</p> o:#l r{
</BODY> F.c`0u;=
</HTML> K^t M$l\
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H qdh;zAMx
])}{GW
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INTERCAL 6PT ,m
PLEASE DO ,1 <- #13 +Y(cs&V*
DO ,1 SUB #1 <- #238 }MY7<sMDOy
DO ,1 SUB #2 <- #112 >i~W$;t
DO ,1 SUB #3 <- #112 owZjQ
DO ,1 SUB #4 <- #0 rklr^ e
DO ,1 SUB #5 <- #64 gbwKT`N*
DO ,1 SUB #6 <- #238 UBuk-tq
DO ,1 SUB #7 <- #26 X!&DKE
DO ,1 SUB #8 <- #248 @i&LKr8
DO ,1 SUB #9 <- #168 r&)/3^S '
DO ,1 SUB #10 <- #24 2NAGXWE
DO ,1 SUB #11 <- #16 +`9
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DO ,1 SUB #12 <- #158 nlXg8t^G
DO ,1 SUB #13 <- #52 '|&}rLr:+
PLEASE READ OUT ,1 A=!&2(
PLEASE GIVE UP ZT4._|2
soW.
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Java nH}api^0A
public class Hello 5tHv'@
{ pSkP8'
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public static void main(String[] args) "5%G[MB
{ LP_d}ve
System.out.println("Hello, world!"); |xQG
} znhe]&Fw
} \lCr~D5
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JSP qqT6C%Q`kG
<% 9vCn^G%B
out.print("Hello, world!"); Smo^/K`f9
%> GV6!`@<
_o~<f)E[9
[Av87!kJ!X
MIXAL '@2pOq
TERM EQU 19 the MIX console device number mA(K`"Bfh
ORIG 1000 start address H&E c*MT
START OUT MSG(TERM) output data at address MSG #tN)OZA
HLT halt execution RO'MFU<g
MSG ALF "MIXAL" E}c(4RY
ALF " HELL" +N"A5U
ALF "O WOR" sn_]7d+Q
ALF "LD " Namw[TgJ
END START end of the program k6ERGQ9|I
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G^p>fy~
Nuva oc?,8I[P5
<..直接输出..> L{bcmo\U
Hello, world! *6e`km
CY)/1 # J
<..或者..> ~l}rYi>g%
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<. )^
R]3!v
// 不带换行 Vk y~yTL)\
? "Hello, world!" 5(1Zj`>'
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// 或者 qw&Wfk\}
%CfJ.;BDNE
// 带换行 LH"MJWOJ
?? 'Hello, world!' ;i^p6b j
.> A1{P"p!
TOn{o}Y B
W tnZF]1:u
OCaml zwN;CD1
let main () = lu`\6
print_endline "Hello world!";; a k@0M[d
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L^KGY<hp4
Pascal chQt8Ar3
program Hello; @SDsd^N{2P
begin Pqo_+fL+
writeln('Hello, world!'); Zd1+ZH
end. Pg-~^"?y
jx!)N>
3Ku!;uo!u
Perl AEX]_1TG
#!/usr/local/bin/perl p \; * :
print "Hello, world!\n"; bEV
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H;k;%Zg;
HLg/=VF7?
PHP J|sX{/WT
<?php 5znLpBX<N
print("Hello, world!"); 7B _;YT
?> X, <l
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8JAA?0L"'
Pike @b=tjQO_
#!/usr/local/bin/pike t LdBnf
int main() /u<lh.
hPW
{ /,"Z^=
write("Hello, world!\n"); jj0@ez{3
return 0; g.kpUs
} }9R45h}{<
u6'vzLmM
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PL/I Cnd*%C PZ
Test: procedure options(main); };+ '
declare My_String char(20) varying initialize('Hello, world!'); QUaz;kNC7
put skip list(My_String); c,Zs.
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end Test; aa_&WHXkt
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Y:^~KS=Uz
Prolog LbJtU!
goal n4 KiC!*i0
write("hello,world!"). HPCzh
Wcz{": [
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Python iVd*62$@$
#!/usr/local/bin/python t^ Aios~F
print "Hello, world!" k*-_CO-h
MfJk`-%~
6.6~w\fR8
REXX &{7n
say "Hello, world!" eE>3=1d]w
wHBkaPO!
4(R O1VWsb
Ruby $e+@9LNK
#!/usr/bin/ruby F]
+t/
print "Hello, world!\n" ?f1%)]>
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,M>W) TSH
Scheme %Wom]/&,'
(display "Hello, world!") lT@5=ou[
(newline) u%V=Ze
( iP,F]
1HN_
sed (需要至少一行输入) MEI]N0L3
sed -ne '1s/.*/Hello, world!/p' 6](vnS;
\C
ZiU3
Bo`fy/x#
Smalltalk CHdw>/5
Transcript show: 'Hello, world!' {uM0J$P :
iEr|?,
DA]!ndJD
SNOBOL MCurKT<pQ
OUTPUT = "Hello, world!" Y5-X)f
END L -b~#
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SQL Cs^o- g!L
create table MESSAGE (TEXT char(15)); "3Dvc7V
insert into MESSAGE (TEXT) values ('Hello, world!'); -gu)d5b
select TEXT from MESSAGE; '&?47+W
drop table MESSAGE; ,T|iA/c
nkS6A}i3o
U>e@m?
Tcl b= F"
#!/usr/local/bin/tcl x)BG%{h
puts "Hello, world!" *#N%3:@T
^dZ,Itho
HjGT{o
TScript h6)hZ'zV
? "Hello, world!" ]
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b 7aAP*$
5Lum$C
c}
Turing XwX1i!'54
put "Hello, world!" @*is]d+Ya
8}xU]N#EV
PM9HfQU?
UNIX-style shell |1J "r.K
程序中的/bin/sh可改为您使用的shell %04>R'mN
bCd! ap+#
#!/bin/sh \M:,Vg
echo 'Hello, world!' F:hJ^:BP
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$N,9e
GUI `'0opoQRe
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Delphi %m+Z rH(
program HelloWorld; 5mER&SX
uses b.YQN'
Dialogs; uKpl+>
begin y"t5%Iv
ShowMessage('Hello, World!'); J)'6 z
end. p&