“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!wSi
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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》。 oeV.K.
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以下是用不同语言写成的Hello World程序的几个例子: " pg5w
Ada ~e|RVY,
with Ada.Text_Io; use Ada.Text_Io; }W2FF
procedure Hello is ;Gc,-BDFw
begin /g/]Q^
Put_Line ("Hello, world!"); |/^ KFY"
end Hello; B* 0TM+
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汇编语言 l k~VvRq
!wbO:py[8>
x86 CPU,DOS,TASM O*Gg57a
MODEL SMALL O`?qnNmc;
IDEAL #:B14E
STACK 100H )RUx
_3Kow{y\
DATASEG Qy4eDv5
HW DB 'Hello, world!$' eELLnU{"
58[=.rzD
CODESEG 4d x4hBd
MOV AX, @data M Ewa^
MOV DS, AX W;Y"J_
MOV DX, OFFSET HW t=l@(%O 0_
MOV AH, 09H k|hy_? *
INT 21H ys/U.e|)!
MOV AX, 4C00H 6Qc
*:(GE
INT 21H $jkzm8{W
END :@rq+wvP
Lm-f0\(
dDu8n+(8 L
x86 CPU,GNU/Linux,NASM > J.q3
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). *XUJv&ZN
;Enter this into "hello.asm" then type: ^;8dl.;
;"nasm -f elf hello.asm" et`1#_o
;"ld hello.o -o hello" v[Mh[CyB
;"./hello" i'cGB5-j
]EN+^i1F[
section .data ;data section declaration j.]ln}b/'+
msg db 'Hello World!',0AH AU$<W"%R
len equ $-msg ;string length tDC?St1
at|.Q*&a#
section .text ;code section declaration tZXq<k9
global _start ;entry point (start of execution) yac4\%ze
_start: mov edx,len ;string length :$=]*54`T
mov ecx,msg ;string start H\%^n<]#
mov ebx,1 ;file handle: stdout "g5<j p
mov eax,4 ;sys_write y&n-8L_
int 80h ;kernel system call 5)c B\N1u
Lo<WK
mov ebx,0 ;return value ?]%ZJd
mov eax,1 ;sys_exit >b7Yk)[%
int 80h ;kernel system call xe4`D>LUo
9^?2{aP%
ZGw6Bd_I
x86 CPU,Windows,MASM32 %!\iII
.386 X :#}E7]j
.model flat,stdcall {^@vCBE+
option casemap:none (.J6>"K<
;Include 文件定义 %zKTrsMZ
include windows.inc +xL' LCx
include user32.inc u<U8LR=)V5
includelib user32.lib Y=?Tm,z4
include kernel32.inc Cl8S_Bz
includelib kernel32.lib l NLa:j
;数据段 og?L 9
.data *b4W+E
szCaption db 'A MessageBox!',0 IKrojK8-?
szText db 'Hello,world!',0 Y1wH_!%b
;代码段 %ONU0xtq k
.code pzT,fmfk
start:
s?JOGu
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK csFLBP
invoke ExitProcess,NULL %N#A1
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 7](aPm8
end start :IX_|8e ^
^\oMsU5(
r0Zj'F_e
AWK C14"lB.
BEGIN { print "Hello, world!" } HGao} @'
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{,=U]^A
BASIC 2Rqpok4
传统版BASIC(例如GWBASIC): "]bOpk T
$ba*=/{[q
10 PRINT "Hello, world!" >~l^E!<i-u
20 END #[&9~za'"m
(kVxa8 0
或在提示符输入: kr\#CW0?
!GJT-[
?"Hello, world!":END Q 5&|1m Pb
>l b9 j>
现代版BASIC(例如Quick BASIC): W%1/:_
k?}y@$[)
Print "Hello, world!" l(pP*2
Obx!>mI^6
以下的语句在Quick BASIC中同样有效: @rv)J[7Y&
F]L96&
? "Hello,world!" ?BX}0RWMh7
'};mBW4z
\Ez&?yb/
BCPL '=+gweM
GET "LIBHDR" ^U6VJ(58P
gg.lajX
LET START () BE @8Cja.H
$( <M,<|Y*)
WRITES ("Hello, world!*N") ?L| Ai\|
$) V$_.&S?(Y
X"V)oC
Gs>4/
Befunge !<<wI'8
"!dlrow olleH">v !ir%Pz^)
, Byh!Snoe
^_@ \8)FVpS
(~NR."s;
Qoa&]]
Brainfuck uvRX{q4
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Eb8~i_B-
+++++++++++++++.>.+++.------.--------.>+.>. I%jlM0ZUI"
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C iX6*OEl/Q
#include <stdio.h> jItVAmC=i
;D<;pW
int main(void) VFK]{!C_
{ jFl!<ooCo
printf("Hello, world!\n"); T3Sz<K$E
return 0; $k+XH+1CW
} qN^]`M[ BY
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!Ld[`d.|R!
C++ },;Z<(
#include <iostream> HOr Xxxp1^
n0)y|B#
int main() R1Fcd@DWD
{ }((P)\s
std::cout << "Hello, world!" << std::endl; ~"Su2{"8B
return 0; tlYB'8bJY
} N+vsQ!Qz
W!|l_/L'
sT,*<^
C++/CLI ";upu
int main() xg4wtfAbS
{ )Wk&c8|y
System::Console::WriteLine("Hello, world!"); hbSKlb0d
} Of-8n-
94?/Rhs5
h(i_'P?
C# (C Sharp) S3Fj /2Q8
class HelloWorldApp s~A:*2 \
{ F5+!Gb En
public static void Main() +1K=]#a
{ !FQS9SoO9
System.Console.WriteLine("Hello, world!"); O' Mma5
} dFZh1*1
} z"*3p8N
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\okvL2:!
COBOL H|3CZ=U?
IDENTIFICATION DIVISION. IH"_6s#$&
PROGRAM-ID. HELLO-WORLD. sfp.> bMj
9Qq%Fw_
ENVIRONMENT DIVISION. Icx)+Mq
;,Os3
DATA DIVISION. "2:#bXM-
[7l5p(=
PROCEDURE DIVISION. N_p^DP
DISPLAY "Hello, world!". 8\bZ?n#dn
STOP RUN. Gb.}af#v
^Yo2 R
")u)AQ
Common Lisp u&'&E
(format t "Hello world!~%") KcM+8W\
a
fB?js6
T^g i^{
DOS批处理
Q)
iN_ |
@echo off 0L\vi
echo "Hello, world!" \,G19o}`Es
'<h@h*R
&D` $YUl@
Eiffel ]_hXg*?
class HELLO_WORLD s5ILl wr
nIl<2H]F`
creation m@yx6[E#
make #B__-"cRv
feature 7 .xejz
make is 7??j}ob>
local (`d _DQ
io:BASIC_IO hOe$h,E']
do q X]ej2
!!io _<jccQ
io.put_string("%N Hello, world!") !6_tdZ
end -- make *jl_,0g]
end -- class HELLO_WORLD {/XU[rn
7mYBxE/
C7!=LiK}
Erlang ;_1> nXh
-module(hello). o2^?D`Jr
-export([hello_world/0]). ?e23[
h}%yG{'/M=
hello_world() -> io:fwrite("Hello, World!\n"). ,]=Qgn
aT=V/Xh}d
.-:6L2
Forth {ZgycMS
." Hello, world!" CR Rp.FG
;W!hl<``d*
cKAZWON8;v
Fortran Q?Uk%t\hwc
WRITE(*,10) #~ [mn_C
10 FORMAT('Hello, World!') eS"sd^;R
STOP (d-j/v*4
END fQ,(,^!;
9'!I6;M
pl.=u0 *
HTML <~Tfi*^+
<HTML> !7anJl
<HEAD> MM Nz2DEy[
<TITLE> Hello World! </TITLE> D"n
3If%
</HEAD> dUpOg{I.x
<BODY> 1I U*:Z;Rz
<p>Hello World!</p> Alb5#tm:m
</BODY> I[ I]C9D
</HTML> zyFbu=d|O:
7033#@_
s}":lXkrw
HQ9+ mQt?d?6
H %suXp,j
.g6(07TyV
2n5{H fpY
INTERCAL :6Sb3w5h
PLEASE DO ,1 <- #13 U_e e3KKA
DO ,1 SUB #1 <- #238 +yu^Z*_
DO ,1 SUB #2 <- #112 |y7#D9m
DO ,1 SUB #3 <- #112 .e2K\o
DO ,1 SUB #4 <- #0 ;?:X_C
DO ,1 SUB #5 <- #64 h2edA#bub
DO ,1 SUB #6 <- #238 o8S)8_3
DO ,1 SUB #7 <- #26 610hw376B
DO ,1 SUB #8 <- #248 oNBYJ]t
DO ,1 SUB #9 <- #168 Gex%~';+q
DO ,1 SUB #10 <- #24 (
j~trpe,
DO ,1 SUB #11 <- #16 VUGVIy.
DO ,1 SUB #12 <- #158 5>[j^g+@
DO ,1 SUB #13 <- #52 %D}]Z=gp
PLEASE READ OUT ,1 g,cl|]/\d
PLEASE GIVE UP 4S#q06=Xe
!Pb39[f
?\Z-3l%M
Java
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public class Hello %+Khj@aX
{ 4U1"F 7'
public static void main(String[] args) <ba+7CK]w
{ u<{uUui}$v
System.out.println("Hello, world!"); )*3sE1
} VR_ bX|
} 3:WXrOl
qbe9 CF'@_
[8.w2\<?
JSP &\o!-EIK8
<% :S
|)
out.print("Hello, world!"); K.jm>]'z4;
%> c{t(),nAA
(T0%H<#+
p![CH
MIXAL &za~=+
TERM EQU 19 the MIX console device number ssC5YtF7X
ORIG 1000 start address tmI2BBv
START OUT MSG(TERM) output data at address MSG ocT.2/~d
HLT halt execution l~Sn`%PgA
MSG ALF "MIXAL" (eAh8^)
ALF " HELL" UZ+FV;<
ALF "O WOR" .J3Dk=/
ALF "LD " a<K@rgQ
END START end of the program f<0nj?
)7Ed}6%
7|Tu@0XXA
Nuva JRj%d&^}
<..直接输出..> 8o;9=.<<~u
Hello, world! X`k[ J6
KI="O6 h
<..或者..> f
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=j1rw
<. Zj8aD-1]U^
// 不带换行 sx0:g?F3j
? "Hello, world!" YEx76
\WVrn >%xu
// 或者 3#ua
xd H*[
// 带换行 ]OOL4=b
?? 'Hello, world!' 0oi
=}lV
.> G&Sp }
RT)*H>|
T+[N-"N
OCaml j@b4)t
let main () = {<- BU[H
print_endline "Hello world!";; O5Xu(q5+
=/rIXReY
uFT&r|
Pascal ]S~Z8T-[
program Hello; WeTs va+
begin -)tu$W*
writeln('Hello, world!'); r='"X#CmV/
end. dZ7+Iw;m
pU*dE
,]'?Gd
Perl aMFUJrXo
#!/usr/local/bin/perl ~sQN\]5VW
print "Hello, world!\n"; ;?i(WV}ee
wKCHG/W
y$At$i>u
PHP DT@6Q.
<?php \@4_l?M
print("Hello, world!"); 5"5D(
?> 8uX1('+T*
B;?"R
-zd*tujx
Pike ,"u-V<>6O
#!/usr/local/bin/pike gHC -Y 0_
int main() N}>XBZy
{ mlY0G w_e
write("Hello, world!\n"); 8_K22]c5
return 0; 1TKOvy_
} RTNUHz;{L
]cnLJ^2
MX?K3=j @>
PL/I "}]1OL S V
Test: procedure options(main); xaWm wsym
declare My_String char(20) varying initialize('Hello, world!');
P.RlozF5;
put skip list(My_String); {@9y%lmrh
end Test; 0=;jGh}|i
$@t-Oor;
31y=Ar""
Prolog lu(<(t,Lbs
goal V,($I'&/
write("hello,world!"). 92GO.xAD?
p
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5yO6szg
Python 6v0^'}
#!/usr/local/bin/python OZ1+` 4 v
print "Hello, world!" OedL?4
s!09Pxc
pAYH"Q6~)I
REXX 0sRby!
say "Hello, world!" 4?X#d)L(
. oUaq|O
ZN|DR|cUY
Ruby qbkvwL9
#!/usr/bin/ruby |*7uF<ink6
print "Hello, world!\n" a8-2:8Su
t#~r'5va
!Ljs9 =UF
Scheme #:Di1I9<O7
(display "Hello, world!") su(y*187A
(newline) 0iW]#O/
5f7;pS<
jpqq>Hbg_
sed (需要至少一行输入) I;L$Nf{v
sed -ne '1s/.*/Hello, world!/p' O k_I}X
EW$ Je
REhXW_x
Smalltalk 2"NRnCx*
Transcript show: 'Hello, world!' LKG],1n-
FK{YRt
3KfZI&g
SNOBOL -,et. *
OUTPUT = "Hello, world!" l'VgS:NT
END wYhWRgP
y>u+.z a|
BUv;BzyV
SQL ~-Rr[O=E
create table MESSAGE (TEXT char(15)); V#|#%
8
insert into MESSAGE (TEXT) values ('Hello, world!'); R)t"`'6|
select TEXT from MESSAGE; @?{n`K7{`
drop table MESSAGE; Pv`yOx&nE
5B
.+>u"e
Nm#VA.~
Tcl $g
_h9L
#!/usr/local/bin/tcl AL}c-#GG
puts "Hello, world!" Xd66"k\b+
e%j+,)Ry
y%=\E
TScript )__vPPko i
? "Hello, world!" ;'dw`)~jQ
X(1nAeQ
s'ntf
Turing T.!GEUQ
put "Hello, world!" M'W@K
?b:J6(-
/9|1eSUa
UNIX-style shell )dG7$,g
程序中的/bin/sh可改为您使用的shell R*E/E
H]Q Z4(
#!/bin/sh n<kcK
echo 'Hello, world!' t</rvAH E
`Qv7aY
O qY8\>f-
GUI gCgMmD=AZ
oGly|L>
Delphi >f19P+
program HelloWorld; 57)S"
uses s7SW4ff1
Dialogs; 4kNf4l9Y
begin BkJV{>?_+
ShowMessage('Hello, World!'); HLAWx/c,j"
end. ,$mnD@)
\S }&QV