“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。 6.kX~$K
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 J@54B
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以下是用不同语言写成的Hello World程序的几个例子: u.YPb@
Ada g4cmYg3
with Ada.Text_Io; use Ada.Text_Io; *z!!zRh3x
procedure Hello is m646|G5
begin J*Dj`@`4`g
Put_Line ("Hello, world!"); -9Wx;u4]o
end Hello; @%q0fj8b
lR\=] ]7I>
HaXlc8
汇编语言 (Hb
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8zS't2
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x86 CPU,DOS,TASM AdxCP\S&
MODEL SMALL !([Q1r{u
IDEAL br*L|s\P\9
STACK 100H JhRXfIK>{
5M4mFC6
DATASEG "K5n |{#
HW DB 'Hello, world!$'
#"&h'V
8;mn7 XX
CODESEG Fy3&Emu
MOV AX, @data |#q 5#@,
MOV DS, AX J)vP<.3:
MOV DX, OFFSET HW -g(&5._,ZW
MOV AH, 09H uh*b[`e
INT 21H E}sjl
MOV AX, 4C00H <"Z]S^>$
INT 21H L!x7]g,^
END T%A45BE
V
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KY9sa/xO
x86 CPU,GNU/Linux,NASM fo9O+e s
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). F/sXr(7
;Enter this into "hello.asm" then type: jFf2( AR
;"nasm -f elf hello.asm" ( >zXapb2
;"ld hello.o -o hello" /bv`_>
;"./hello" -H5n>j0!{
Wu(6FQ`H
section .data ;data section declaration -&I%=0q
msg db 'Hello World!',0AH w-*$gk]
len equ $-msg ;string length ^UHt1[
R}IMX9M=
section .text ;code section declaration Wly-z$\
global _start ;entry point (start of execution) mO;X>~K
_start: mov edx,len ;string length t<mT=(zt*
mov ecx,msg ;string start t$^1A1Ef
mov ebx,1 ;file handle: stdout ^=D=fX"8%
mov eax,4 ;sys_write ,rVm81-2
int 80h ;kernel system call gq~>S1
Sr Z\]
mov ebx,0 ;return value iK8aj)%Q@
mov eax,1 ;sys_exit I9O!CQCTt
int 80h ;kernel system call teH $hd-q
_\waA^ F
":EfR`A#
x86 CPU,Windows,MASM32 KoVy,@
.386 =Bo (*%
.model flat,stdcall m,NUNd#)\
option casemap:none Jy?s'tc
;Include 文件定义 "W$,dWF
include windows.inc n=!]!'h\:
include user32.inc :=WiT_M
includelib user32.lib 1^ZQXUzl%i
include kernel32.inc $BKGPGmh
includelib kernel32.lib Nv}'"V>
;数据段 H~UxVQLPp
.data S'm&Ll2i@
szCaption db 'A MessageBox!',0 ?JO x9;`
szText db 'Hello,world!',0 LDqq'}qK6
;代码段 ( P|Ph
.code +X6xCE
start: %>Z;/j|#r
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK E/z^~;KA
invoke ExitProcess,NULL ~H!s{$.5
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> M&o@~z0
end start aZEi|\VU
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ka? |_(
AWK vHSX3\(
BEGIN { print "Hello, world!" } fWie fv[&
C9>tj=yEY
Sn=|Q4ZN
BASIC -3`S;Dmn
传统版BASIC(例如GWBASIC): Q-o}Xnj*!L
spter35b[
10 PRINT "Hello, world!" ^*(*tS|M
20 END A.tONPi
j]th6
或在提示符输入: |6/k2d{,(
A8 V7\
?"Hello, world!":END O|j(CaF
#T:#!MKa
现代版BASIC(例如Quick BASIC): 6Yhd [I3
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Print "Hello, world!" %&m/e?@%I
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以下的语句在Quick BASIC中同样有效: m`luMt9
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? "Hello,world!" 1FCqkwq[
mOji\qia
6vp\~J
BCPL 'F>eieO
GET "LIBHDR" "]h4L
` b a}6D
LET START () BE |@#37
$( _)s<E9t2N
WRITES ("Hello, world!*N") MTJ ."e<B
$) 'L|& qy@
MzZYzz
QCB2&lN\&L
Befunge \; ! oG
"!dlrow olleH">v |"h# Q[3
, 0G`_dMN
^_@ x<^+nTzN
Y+5nn
8|kr|l
Brainfuck kDJ$kv
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< wGdnv}#
+++++++++++++++.>.+++.------.--------.>+.>. n,D~ whZx
y'\BpP
wBz?OnD/D
C +-tvNX%IJ
#include <stdio.h> .^6;_s>FN
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int main(void) +oa\'.~?
{ ,#&\1Vxf
printf("Hello, world!\n"); KwGk8$ U
return 0; gB/4ro8
} S+(TRIjk
#'5|$ug[
zAT7^q^
C++ lbM)U
#include <iostream> A[lbBR
d%1Tv1={
int main() ~uy{6U{&I
{ [vM ksHk4
std::cout << "Hello, world!" << std::endl; $|+q9o\
return 0; Ia_I~ U$
}
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K.3)m]dCl
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C++/CLI +M4X
r*
int main() thG;~W
{ &+V6mH9m@
System::Console::WriteLine("Hello, world!"); Z*&y8;vUQ
} n8W+q~sW%
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C# (C Sharp) 6mcxp+lm|
class HelloWorldApp _}MO.&Y
{ =eG?O7z&
public static void Main() DmDsn
{ hM}rf6B
System.Console.WriteLine("Hello, world!"); QTZfe<m0
} *12,MO>go
} i-1lpp I
mZGAl1`8
5G5P#<Vv
COBOL zTA+s 2
IDENTIFICATION DIVISION. &'%b1CbE
PROGRAM-ID. HELLO-WORLD. 'a ]4]d
f#4,2Xf
ENVIRONMENT DIVISION. Wp2b*B=-
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DATA DIVISION. Py^ _::
k?(x}IZdG
PROCEDURE DIVISION. yCznRd}J
DISPLAY "Hello, world!". 5=<
y%VF
STOP RUN. @9-/p^n1
2.''Nt6|
fL^+Qb}
Common Lisp E=N44[`.G
(format t "Hello world!~%") $P<T`3Jg
dnRS$$9#
2R}9wDP
DOS批处理 -+1_ 1!
@echo off 7G,{BBB
echo "Hello, world!" 1Z9_sd~/6
m417=wf
b.=bgRV2{x
Eiffel Fh2$,$
2
class HELLO_WORLD xd[GJ;xvs
e,j2#wjor
creation 5R^e
make )ro3yq4??
feature |Z\?nZ~
make is o}EipTL
local >%qk2h>
io:BASIC_IO -P I$SA,
do ]IX6>p,
!!io Ql~9a
[8T~
io.put_string("%N Hello, world!") oW0A8_|9
end -- make |>w>}w`~
end -- class HELLO_WORLD cJb.@8^J
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)8BGN'jyi
Erlang m}t.E
-module(hello). _8*}S=
-export([hello_world/0]). ~!PAs_O
SZ/}2_;
hello_world() -> io:fwrite("Hello, World!\n"). Xr?(w(3
2oY.MQD7iW
4J #F;#iA
Forth PwF
1Pr`r
." Hello, world!" CR <d2?A}<
CcF$?07 i
c!,&]*h"k
Fortran R^_7B(
WRITE(*,10) q> ;u'3}
10 FORMAT('Hello, World!') Pv mmyF
STOP }b$?t7Q)
END e_eNtVq
j$2rU'
cJ CKxj
HTML +ZuT\P&kR5
<HTML> I+qg'mo
<HEAD> qG=?+em
<TITLE> Hello World! </TITLE> 977%9z<h
</HEAD> +Ce[OG.
<BODY> M8 4{u!>[
<p>Hello World!</p> =bn(9Gm!J
</BODY> 5AX
AIP n)
</HTML> {2|[7oNT6
z]/;?
j41)X'MgJ
HQ9+ M4%u~Z:4h+
H +
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D'{NEk@
18(hrj
INTERCAL s^atBqw,
PLEASE DO ,1 <- #13 (P(=6-0
DO ,1 SUB #1 <- #238 E5^P*6c(
DO ,1 SUB #2 <- #112 O=,[u?
DO ,1 SUB #3 <- #112 _J|TCm
DO ,1 SUB #4 <- #0 [#+yL
DO ,1 SUB #5 <- #64 Se0!-NUK0
DO ,1 SUB #6 <- #238 2kP0//
DO ,1 SUB #7 <- #26 S5Hb9m&&
DO ,1 SUB #8 <- #248 }rWEa^
DO ,1 SUB #9 <- #168 =H<I` J'
DO ,1 SUB #10 <- #24 *=sMJY9#jE
DO ,1 SUB #11 <- #16 x,U'!F
DO ,1 SUB #12 <- #158 0_!')+
DO ,1 SUB #13 <- #52 2sezZeMV
PLEASE READ OUT ,1 tHhau.!
PLEASE GIVE UP s}
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W0zRV9"P
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Java F&tU^(7<
public class Hello Dd: TFZo
{ h/)kd3$*'
public static void main(String[] args) *3uBS2Ld
{ >
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System.out.println("Hello, world!"); -qI8zs$:5
} 4AIo,{(
} {Xw6]d
{D6p?TL+
9.:]eL
JSP &dH[lB
<% 5Kadh2nz
out.print("Hello, world!"); & bKl(,
%> $;4y2?E
9<e%('@[
&:>3tFQSH
MIXAL \?$`dA [
TERM EQU 19 the MIX console device number ;\N)RZ
ORIG 1000 start address R m&^[mv
START OUT MSG(TERM) output data at address MSG } @)r\t4m
HLT halt execution Li'>pQ+
MSG ALF "MIXAL" Z<yLu'48)A
ALF " HELL" vz$_Fgsc.
ALF "O WOR" {^5LolCCH
ALF "LD " Wz8MV -D
END START end of the program |)Q#U$ m
6#J>b[Q
yt5Sy
Nuva s6DmZ^Y%
<..直接输出..> Rudj"OGO
Hello, world! 1Fg*--8[r
A^2n i=b
<..或者..> 7J[DD5
.83{NF
<. Cr7T=&L
// 不带换行 6YHQ/#'G~
? "Hello, world!" N4[`pXM6
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// 或者 Kl Kk?6>
8gHOs#\
// 带换行 483/ZgzT`
?? 'Hello, world!' Nv~H797B
.> $_ BoG
~6Xr^An/Z
V
6*ohC:
OCaml >=6 j:
let main () = h7P<3m}
print_endline "Hello world!";; n@JZ 2K4
'^{:HR#i
+55+%oGl
Pascal M+L8~BD@
program Hello; S"@/F-
81
begin )bgaqca_{
writeln('Hello, world!'); .c5)`
end. l%_r 3W
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> u!#
4
Perl U.GRN)fL4
#!/usr/local/bin/perl 0Ym_l?]m[
print "Hello, world!\n"; G%HuB5:u
^H(,^cVN
^vY[d]R _\
PHP +%~/~1
<?php D}MCVNd^
print("Hello, world!"); W5^<4Ya!
?> iW9o-W
a
fvi8+3A&
q` 0wG3
Pike -cONC9=
#!/usr/local/bin/pike BN~gk~t_
int main() S8d X8,qg
{ d7]~t|
write("Hello, world!\n"); Yo*.? Mq'
return 0; E]0}&YG
} 9 WO|g[Y3
ls@j8bVv^
PB(q9gf"1}
PL/I c gOkm}h
Test: procedure options(main); \Q!I;
declare My_String char(20) varying initialize('Hello, world!'); &cSZ?0R
put skip list(My_String); RYyM;<9F
end Test; p.|M:C\xL
q2e=(]rKE{
ZnAXb S
Prolog wj{[g^y%
goal >+FaPym
write("hello,world!"). sqEOXO
=L]GQ=d
k^#+Wma7
Python Fd;%wWY.zm
#!/usr/local/bin/python ]ft}fU5C1
print "Hello, world!" _*.ImD
)gHfbUYS
)?MUUI :
REXX 0a}a
say "Hello, world!" @~CXnc0
^1-Vd5g
iF*L-
Ruby I /z`)
#!/usr/bin/ruby GO]5~4k
print "Hello, world!\n" 5Ly Wg2
v+vM:At4
ku5vaP(
Scheme C0}@0c
(display "Hello, world!") 60#eTo?}o
(newline) >pm`(zLn
E0)43
D$U`u[qjtS
sed (需要至少一行输入) Pk{%2\%&2
sed -ne '1s/.*/Hello, world!/p' d#CAP9n;'
&e\UlM22
X.GK5Phd
Smalltalk ]S 3l' "
Transcript show: 'Hello, world!' IKVFbTX:y
O^~Z-;FA
E*"oA1/I
SNOBOL >/+R~ n
OUTPUT = "Hello, world!" yA]OX" T?*
END Q*ixg$>
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[ 0z-X7=e
SQL )?;+<,
create table MESSAGE (TEXT char(15)); V [Wo9Y\
insert into MESSAGE (TEXT) values ('Hello, world!'); )m$MC25
select TEXT from MESSAGE; ;-^8lWt
drop table MESSAGE; ~0Z.,p_
KA? J:
FEA t6
Tcl }u]7 x:lh
#!/usr/local/bin/tcl KP&$Sl
puts "Hello, world!" l.xKv$uOGR
kfgkZ"9
{u[_^
TScript PJL
[En*
? "Hello, world!" oV'G67 W
I+/fX0-Lib
:E.T2na
Turing im@QJ:
put "Hello, world!" 97 k}{tG
7hhv/9L1
aen0XiB6~^
UNIX-style shell >o1,Y&