“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。 y~w -z4
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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》。 >z`^Q[
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以下是用不同语言写成的Hello World程序的几个例子:
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Ada RcASFBNpS
with Ada.Text_Io; use Ada.Text_Io; ;}tEU'&
procedure Hello is v[aFSXGj)
begin Zewx*Y|
Put_Line ("Hello, world!"); wQ 7G_kVp
end Hello; J<
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AF=9KWqf
汇编语言 3N'f Hy
P~>E
x86 CPU,DOS,TASM j A 9!
MODEL SMALL )]=1W
IDEAL 98%M`WY
STACK 100H <h$Nh0
6(Qr!<
DATASEG
tj:Q]]\M
HW DB 'Hello, world!$' b)SU8z!NV&
N34.Bt
CODESEG #SHmAB
MOV AX, @data 1|?8g2Vf
MOV DS, AX h "7:&=e
MOV DX, OFFSET HW PJ=N.xf}
MOV AH, 09H tA?cHDp4E
INT 21H >d`XR"_e
MOV AX, 4C00H hrT_0FZV
INT 21H %<g(EKl
END |NbF3 fD
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8$|<`:~J
x86 CPU,GNU/Linux,NASM Qg7rkRia
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). aw0;
;Enter this into "hello.asm" then type: &
*^FBJEa.
;"nasm -f elf hello.asm" ~{#$`o=
;"ld hello.o -o hello" >t[beRcR6
;"./hello" Wz}8O]#/.
];-DqK'
section .data ;data section declaration ~\4B 1n7
msg db 'Hello World!',0AH aKLA_-E
len equ $-msg ;string length dFd^@b
D^?jLfW8
section .text ;code section declaration `m~x*)L#
global _start ;entry point (start of execution) _^)Wrf+
_start: mov edx,len ;string length 4@K9%
mov ecx,msg ;string start 6I$laHx?
mov ebx,1 ;file handle: stdout LP{{PT.&X
mov eax,4 ;sys_write aUdbN&G
int 80h ;kernel system call \(nb
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_f~(g1sE
mov ebx,0 ;return value j.3#rxq
mov eax,1 ;sys_exit @>wD`<U|
int 80h ;kernel system call F-\Swbx+
*h<=
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x86 CPU,Windows,MASM32 >@NH Al
.386 uhyw?#f
.model flat,stdcall 0!D,74r
option casemap:none m15MA.R>
;Include 文件定义 fn%Gu s~
include windows.inc v^Eg ,&(
include user32.inc jRswGMx
includelib user32.lib m])!'Pa(=
include kernel32.inc CQf<En|1
includelib kernel32.lib 9`"o,wGX3
;数据段 tQSj[Yl
.data Qy)+YhE
szCaption db 'A MessageBox!',0 Xq3n7d.
szText db 'Hello,world!',0 =!axQ[)A
;代码段 thoAEG80
.code 7}r!&Eb
start: TZ`@pDi
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK egBjr?
invoke ExitProcess,NULL Qz T>h
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> $Hx00
h o
end start *%G$[=
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AWK &1O!guq%
BEGIN { print "Hello, world!" } 9Tgl/}q)
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BASIC U({20
传统版BASIC(例如GWBASIC): hEO#uAR^Z
4H7
3a5f
10 PRINT "Hello, world!" 9;Z2.P"w
20 END dXkgWLI~
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或在提示符输入: 'bH',X8gF
M*DF tp<
?"Hello, world!":END N30w^W&
g$&uD
现代版BASIC(例如Quick BASIC): -hM
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Print "Hello, world!" XA
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以下的语句在Quick BASIC中同样有效: UbBo#(TZ)
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? "Hello,world!" qz|`\^
)+^1QL
omxBd#;F$
BCPL T&?0hSYt
GET "LIBHDR" @W\y#5"B
#n= b*.
LET START () BE kzA%.bP|
$( OL,3Jh% x
WRITES ("Hello, world!*N") DzZ)aE
$) G2FP|mf,
U Ox$Xwp5&
-Jo8jE~>V
Befunge -IBf;"8f
"!dlrow olleH">v Sm(QgZO[4
, _$<Q$P6y
^_@ M`W%nvEDE
(S:+#v
(BtavE
Brainfuck 5lp
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++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< L*ZC`
.h
+++++++++++++++.>.+++.------.--------.>+.>. N4 O'{
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&&iZ?JteZ
C 8\Y/?$on
#include <stdio.h> xy@1E;
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int main(void) Vb|;@*=R&Q
{ ^wL
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printf("Hello, world!\n"); )4d)G5{
return 0; t6.hg3Y
} j8@Eqh
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jB8n\8Bs
C++ O<3i6
#include <iostream> PZ/ gD
%G%##wv:
int main() ^!]Hm&.a
{ +ahr-v^R<
std::cout << "Hello, world!" << std::endl; !/4f/g4Ze
return 0; ?Rc+H;x=f
} !6eXJ#~[E
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1vcI`8%S+u
C++/CLI KtWG2
int main() zu<8%
{ 1Aq*|JSk(
System::Console::WriteLine("Hello, world!"); )7mX]@
} >wK ^W{
r7tN(2;5
={9G.%W
C# (C Sharp) [\o+I:,}wi
class HelloWorldApp gf!hO$sQ3
{ uN`{; Av
public static void Main() `{g8A P3
{ ^}XKhn.S'
System.Console.WriteLine("Hello, world!"); AL.zF\?
} /o=V
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} C;DNL^
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0dKI+zgr
COBOL !HA[:-JCz
IDENTIFICATION DIVISION. |>(@n{
PROGRAM-ID. HELLO-WORLD. Wt +,6Cq
aq[ ;[$w
ENVIRONMENT DIVISION. m1 78S3
2[&3$-]
DATA DIVISION. Jji~MiMn
dhe?7r]u
PROCEDURE DIVISION. X !5
DISPLAY "Hello, world!". 7s%DM6li 6
STOP RUN. [Rh[Z #6
W~GbB:-
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Common Lisp Q]_3 #_'
(format t "Hello world!~%") 7@g8nv(p
V/Hjd`n)`i
|]a=He;
DOS批处理 @Taj++ua
@echo off )u7*YlU\I
echo "Hello, world!" Wxl^f?I`:
OE(H:^ZR
o5 6_t{<
Eiffel $'3`$
class HELLO_WORLD LOyL:~$
xq:.|{HUk
creation <dx
xXzLT
make so|5HR|
feature F_ ~L&jHP
make is N> RabD
local MnvFmYgxA
io:BASIC_IO ZF
:e6em
do !j8h$+:K
!!io 37)Dx
io.put_string("%N Hello, world!") *F+t`<2
end -- make w]n20&
end -- class HELLO_WORLD :.!]+#Me
de{KfM`W;
:>to?~Z1
Erlang dzZ74FE!t
-module(hello). yH>`Kbf T
-export([hello_world/0]). i<|5~tm
@psyO]D=j%
hello_world() -> io:fwrite("Hello, World!\n"). [B9'/:
NLFSw
0bxB@(NO
Forth #Ag-?k
." Hello, world!" CR ko2Kz
k
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gnmKh>0@6o
Fortran EWPP&(u3
WRITE(*,10) Efi@hdEV
10 FORMAT('Hello, World!') '1A S66k
STOP g(t"+
P
END %sb)U~gP
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W)jO 4,eO
HTML SU OuayE
<HTML> 9I8{2]
<HEAD> >N>WOLbb7(
<TITLE> Hello World! </TITLE> \P]w^
</HEAD> Ev;HV}G
<BODY> M:|Z3p K
<p>Hello World!</p> H8~<;6W
</BODY> J#B%
#X
</HTML> TEl:;4
>TUs~
ZSq7>}
HQ9+ `_sc_Y|C!
H Go3EWM`Cd8
Tl=cniy]
ghm5g/
INTERCAL y0qrl4S)v
PLEASE DO ,1 <- #13 9Vz1*4Ln
DO ,1 SUB #1 <- #238 O(;K]8
DO ,1 SUB #2 <- #112 hK9Trr wau
DO ,1 SUB #3 <- #112 N2uxiXpQZ=
DO ,1 SUB #4 <- #0 knX0b$$
DO ,1 SUB #5 <- #64 Vh^fbv`?
DO ,1 SUB #6 <- #238 J&}/Xw)
DO ,1 SUB #7 <- #26 Pl<r*d)h
DO ,1 SUB #8 <- #248 Ddde,WJA
DO ,1 SUB #9 <- #168 ~H/|J^ J
DO ,1 SUB #10 <- #24 oK&LYlU
DO ,1 SUB #11 <- #16 S (](C
DO ,1 SUB #12 <- #158 $5y%\A
DO ,1 SUB #13 <- #52 %pgie"k
PLEASE READ OUT ,1 jr{C/B}
PLEASE GIVE UP $$~x: iN
@\v,
/2-S/,a
Java pfgFHNH:
public class Hello n'=-bj`
{ ,wE]:|`qJ
public static void main(String[] args) 8<M'~G%CEq
{ mh]'/C_*<w
System.out.println("Hello, world!"); FR9qW$B
} R%o:'-~
} ;4tVFqR
S?n k9T+
%o9@[o
.]
JSP ?F20\D\V
<% aO('X3?
out.print("Hello, world!"); w\k|^
%> C
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_x 'R8/
pkpD1c^
MIXAL IRNL(9H
TERM EQU 19 the MIX console device number xy$73K6
ORIG 1000 start address b'Qia'a%
START OUT MSG(TERM) output data at address MSG SA&0f&07i
HLT halt execution \#.,@g
MSG ALF "MIXAL" LnIln[g:
ALF " HELL" qPZ'n=+
ALF "O WOR" v.:aICB5
ALF "LD " N&7=
hni
END START end of the program )z-)S
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CI"7* z_
Nuva )orVI5ti
<..直接输出..> lP& 7U
Hello, world! :8aa #bA
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<..或者..> M*FUtu
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C2\
<. 5ckL=q"+/
// 不带换行 >c%OnA,3
? "Hello, world!" n 1MZHa,
1S9(Zn[2,
// 或者 "a))TV%N
1oD,E!+^d
// 带换行 |niYN7 17
?? 'Hello, world!' B*7Y5_N
.> xgHR;USH
c7Sa|9*dR
j78WPG
OCaml 3~Od2nk(x
let main () = uc!j`G*]
print_endline "Hello world!";; V(_OyxeC{2
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X.hU23w
Pascal H,`F%G#!`q
program Hello; lxb+0fiN
begin P'.MwS
writeln('Hello, world!'); .zQ:u{FT
end. )9F-h8
&"
%jz]s4u$5j
0fwmQ'lW(
Perl |N_tVE
#!/usr/local/bin/perl m3W:\LTTp
print "Hello, world!\n"; ST$~l7p
)3# gpM
Fw5|_@&k
PHP _+PiaJ&'
<?php /a.4atb0
print("Hello, world!"); ?q a
?> 't:$Lx
F: %-x=q
l?pF?({
Pike pgbm2mT9
#!/usr/local/bin/pike 4?Pdld
int main() FJ0Ity4u6
{ >KHR;W 03
write("Hello, world!\n"); gY\X?
return 0; -&4>>h9_
} <knf^D<"
$/;D8P5/&=
nZZNx
PL/I a (AKVk\
Test: procedure options(main); ,Y *unk<S
declare My_String char(20) varying initialize('Hello, world!'); f%vJmpg
put skip list(My_String); G165grGFd
end Test; ~hK7(K
F.5'5%
zh`!x{Z?^
Prolog 8:=&=9%
goal p F kA,
write("hello,world!"). mdjPKrF<
&*2\1;1tB
biAI*t
Python sd4eJ
#!/usr/local/bin/python X`#,*HkK
print "Hello, world!" oSVo~F
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GELl;
nOq?Q
REXX ;1qE:x}'H
say "Hello, world!" 8B#;ffkmN
t8X$M;$
BS3Aczwk
Ruby Z]?Tx2|7
#!/usr/bin/ruby pde,@0(Fa
print "Hello, world!\n" q#LB 2M
>[t0a"
ZK:dhwer
Scheme W0e+yIaR
(display "Hello, world!") $VEG1]/svp
(newline) ?LJ$:u
EWOS6Yg7
dRwOt
sed (需要至少一行输入) ZEY="pf
sed -ne '1s/.*/Hello, world!/p' &\<!{Y<'
MJ5Ymt a
FY;\1bt<<
Smalltalk MTBHFjXO
Transcript show: 'Hello, world!' k3[rO}>s
)Ve-) rZ
#,dNhUV#
SNOBOL ?%RAX CK
OUTPUT = "Hello, world!" be&5vl
END -s~6FrKy
y?=W
$ti*I;)h4
SQL U'(Exr[
create table MESSAGE (TEXT char(15)); L{`S^'P<
insert into MESSAGE (TEXT) values ('Hello, world!'); 5mzOr4*0
select TEXT from MESSAGE; &UzeNL"]
drop table MESSAGE; :`u?pc27Sm
WFWQ;U{|
^gw htnI
Tcl Y~I$goT
#!/usr/local/bin/tcl GMk\
l
puts "Hello, world!" k^<s|8Y
TUE*mDRmP
}f
rij1/G
TScript LDg"s0n#
? "Hello, world!"
.'`7JU#{
R Lnsy,
"53'FRj_\
Turing eKRslMa
put "Hello, world!" mL5 Nu+#
j
/d?c5
(PVK|Q55y
UNIX-style shell _N`'R.va
程序中的/bin/sh可改为您使用的shell j^4KczJl
zk6al$3R
#!/bin/sh RYhaQ&1i
echo 'Hello, world!' $~>3bik@
a[e&O&Z
[tN^)c`s/
GUI 0*e)_l!
oJ\)-qSf
Delphi kg,t[Jl
program HelloWorld; >L5fc".
uses z+@CzHCN
Dialogs; yH`4sd
begin !-G'8a|7
ShowMessage('Hello, World!'); ( mV *7Z
end. sb1Zm*m6
D.7,xgH
ceiUpWMu,
Nuva kXjrc
<. ,E7+Z' ;
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) (tZ#EL0
.> l'yX_`*Iq
a#i85su
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Visual Basic v?AQ&