“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。 b%S62(qP
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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》。 !ki.t
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以下是用不同语言写成的Hello World程序的几个例子: 57g</p
Ada
''Cay0h
with Ada.Text_Io; use Ada.Text_Io; >z.<u|r2
procedure Hello is <E0UK^-}
begin :G<E^<M\)^
Put_Line ("Hello, world!"); BouTcC
end Hello; )uqA(R>
Co3:*nbRv
h`H,a7
汇编语言 lf!FTm7
al[n,u
x86 CPU,DOS,TASM b@2J]Ay E*
MODEL SMALL v= N!SaK{
IDEAL ;Yg{zhJX~
STACK 100H *<u2:=_s
HX6Ma{vBk
DATASEG pm9%%M$
HW DB 'Hello, world!$' [o<VVtB.Gk
5e fpeu
CODESEG &c*^VL\
MOV AX, @data u@4V7;L
MOV DS, AX 59Gk3frk(
MOV DX, OFFSET HW uZ=NSbYsA
MOV AH, 09H %bdjBa}
INT 21H (k|_J42[
MOV AX, 4C00H ]$,UPR/3
INT 21H PClMQL#
END MX ;J5(Ae
=k oSUVO0
mSo_} je(
x86 CPU,GNU/Linux,NASM m-jHze`D3
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). :Pv*,qHE
;Enter this into "hello.asm" then type: P06RJE
;"nasm -f elf hello.asm" QzAK##9bfa
;"ld hello.o -o hello" 1\r|g2Z
:
;"./hello" Z*FrB58
ZZyDG9a>7
section .data ;data section declaration A3ZY~s#Iv
msg db 'Hello World!',0AH ''kS*3
len equ $-msg ;string length @e'5E^
kVD(Q~<
section .text ;code section declaration g9Yz*Nee<
global _start ;entry point (start of execution) ":nQgV\9
_start: mov edx,len ;string length ymNnkFv
mov ecx,msg ;string start >pr=|$zk=
mov ebx,1 ;file handle: stdout JO@|*/mL
mov eax,4 ;sys_write W.w)H@]7m
int 80h ;kernel system call Kb^>-[Yx
ZlojbL@|4
mov ebx,0 ;return value 8L1oh j
mov eax,1 ;sys_exit s<]&*e&}?
int 80h ;kernel system call
PTS]7
4Ua>Yw0
B7Tk4q\;Q
x86 CPU,Windows,MASM32 )$Z=t-q
.386 tM#lFmdd\P
.model flat,stdcall v<9&B94z
option casemap:none >dM8aJzC
;Include 文件定义 =-o'gL
include windows.inc Ou>vX[{
include user32.inc b,IocD6v;P
includelib user32.lib &ciN@nJ|$z
include kernel32.inc p\Lq}tk<
includelib kernel32.lib [>|FB '
;数据段 2:LHy[{5
.data 1R.4:Dn_
szCaption db 'A MessageBox!',0 Pe2w sR"_U
szText db 'Hello,world!',0 wIf
{6z{
;代码段 9RwawTM
.code >5
b/or
start: UgN28YrW
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Y\=FLO9
invoke ExitProcess,NULL a1j.fA
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> :L
3&FA
end start IooNb:(
HWm#t./
vOgC>_x7
AWK Xes|[ *Y!V
BEGIN { print "Hello, world!" } Bg8#qv
*XWq?hi
-]:GL>b
BASIC B[9 (FRX
传统版BASIC(例如GWBASIC): HvxJj+X9
[ REf>_R
10 PRINT "Hello, world!" i5F:r|
20 END ]8;n{ }X
ir3VTqz
或在提示符输入: *Ul*%!?D
NcM>{{8
?"Hello, world!":END EC6k{y}bA
e &9F\e
现代版BASIC(例如Quick BASIC): tD$lNh^
:!zC"d9@
Print "Hello, world!" J g$xO@.
k#:2'!7G
以下的语句在Quick BASIC中同样有效: F&;
Rb}KZ+o"Z
? "Hello,world!" b.2J]6G
Cz^Q5F`
Zt E##p
BCPL /Y^8SO4
GET "LIBHDR" o0z67(N&g
efz&@|KR
LET START () BE YH:8<O,{-
$( C+NF9N
WRITES ("Hello, world!*N") C0x"pO7
$) l|/:Ot
f*xpE`&
`xKFqx:e
Befunge \0FT!}
L
"!dlrow olleH">v 4-v6=gz.
, 'q%%m/,VPQ
^_@ ,,=apyr#&
v@EQ^C2.&
BC\S/5~k
Brainfuck K\Eo z]?
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< XT@Mzo49z\
+++++++++++++++.>.+++.------.--------.>+.>. #-cTc&$O;
'i>xf
^
7]22"mc
C /owO@~G
#include <stdio.h> 5@u~3jPd
q9}m!*8e
int main(void) '5H4z7)
{ yi!`V.
printf("Hello, world!\n"); ^i_Iqph=
return 0; %(LvE}[RJ
} hRTMFgO
b7h+?!H]R
=K$,E4*
C++ 4Nmea-!*
#include <iostream> LAZVW</
(a{ZJI8_
int main() r[HT9
{ W8aU"_
std::cout << "Hello, world!" << std::endl; Dl;d33
return 0; &2.+Igo|G
} YL5>V$i
ESDB[
O+`x
,86K
C++/CLI bsO@2NP'
int main() uu}-"/<~7
{ *_)E6Y?9
System::Console::WriteLine("Hello, world!"); YU\Gj S~>&
} 9qH[o?]
=,Ttw>
W(@>?$&
C# (C Sharp) N8+P
class HelloWorldApp v*P[W_.
{ %D^bahf
public static void Main() AMk~dzNt
{ /PC` 0/b
System.Console.WriteLine("Hello, world!"); J E)J<9gf
} Kpg:yrc['
} RG?MRxC
_pSIJ3O
/2h][zrZ[.
COBOL ){tPP$-i=
IDENTIFICATION DIVISION. 2X_ >vIlEm
PROGRAM-ID. HELLO-WORLD. J~dTVBx
_0]QS4a][c
ENVIRONMENT DIVISION. OROqT~6G
]<X2AO1
DATA DIVISION. W uf/LKj
cQ,9Rnfl,
PROCEDURE DIVISION. D -iUN
DISPLAY "Hello, world!". 2f`xHI/@fj
STOP RUN. ~'[jBn)
tw86:kYEz
NUu;tjt:
Common Lisp oeGS
(format t "Hello world!~%") FF@ `+T
3k{c$x}
=phiD&=
DOS批处理 acP
;(t
@echo off k.{G&]r{
echo "Hello, world!" LJ
l1v
1 mHk =J~
D1!
{S7
Eiffel .xnQd^qoac
class HELLO_WORLD +{Gw9h"5g*
]
?9t -
creation J=VyyUB
make )(.%QSA\C
feature (NM6micc
make is dh?S[|='
local Pzptr%{
io:BASIC_IO cUNGo%Y
do :Lc3a$qtx5
!!io taixBNv
io.put_string("%N Hello, world!") >& [3
end -- make Kv1vx*>
end -- class HELLO_WORLD ny~W]1
w0$R`MOR+
sxt`0oE
Erlang
{ $X X
-module(hello). !rz)bd3$
-export([hello_world/0]). FQQ@kP$.
?{n>EvLY
hello_world() -> io:fwrite("Hello, World!\n"). B'!PJj
0|GpZuGO9
E2-ojL[6
Forth g"w)@*?K
." Hello, world!" CR "zXGp7Q'#
)2#vhMpdN
_>;&-e
Fortran *WD;C0?z
WRITE(*,10) ?C
FS}v
10 FORMAT('Hello, World!') mQFa/7FX
STOP k RQ~hRT6
END 4VC/-.At
BQE{
otoBb^Mz
HTML ofVEao
<HTML> VPdwSW[eM
<HEAD> qjJ{+Rz2
<TITLE> Hello World! </TITLE> i1tVdbC]
</HEAD> 7N!tp,?
<BODY> ~v^%ze
<p>Hello World!</p> IU7$%6<Y
</BODY> s bs[=LW4
</HTML> p1Y+
4t,zHR6W
U0!^m1U:
HQ9+ .MzOLv
H xq#U4E
E(7@'d{o
bcUC4g\9N
INTERCAL #4Dn@Gqh.Y
PLEASE DO ,1 <- #13 (zjz]@qJ
DO ,1 SUB #1 <- #238 <j{0!J@:
DO ,1 SUB #2 <- #112 )3BR[*u*
DO ,1 SUB #3 <- #112 y{@P1{
DO ,1 SUB #4 <- #0 YCir Oge
DO ,1 SUB #5 <- #64 V h
Z=,m
DO ,1 SUB #6 <- #238 vsu@PuqH
DO ,1 SUB #7 <- #26 tniPEmeS
DO ,1 SUB #8 <- #248 3Gc ,I:\
DO ,1 SUB #9 <- #168 JmnBq<&,0
DO ,1 SUB #10 <- #24 hO5K\QnRL
DO ,1 SUB #11 <- #16 ?SB[lbU
DO ,1 SUB #12 <- #158 fG X1y
DO ,1 SUB #13 <- #52 T@%;0Ro~
PLEASE READ OUT ,1 e} sc]MTM
PLEASE GIVE UP oq=?i%'>
yjGGqz$
NFrNm'v
Java gJ<@;O8zu0
public class Hello `G_(xN7O
{ 'LJ %.DJ
public static void main(String[] args) MV
Hz$hyB
{ +A]&AkTw
System.out.println("Hello, world!"); _#/!s]$d#
} 1mT|o_K{ T
} :5TXA
&:;/]cwj
u5u0*c
JSP DQ}_9?3
<% Sf+(1_^`t
out.print("Hello, world!"); 3%It~o?
%> p_rN1W
Dd'
pb=jvK
wJapGc!
MIXAL I
ybl;u
TERM EQU 19 the MIX console device number 8L]gQ g
ORIG 1000 start address I}*]m%'-Y
START OUT MSG(TERM) output data at address MSG I><99cwFI
HLT halt execution S(g<<Te
MSG ALF "MIXAL" 4@/ q_*3o
ALF " HELL" o{ ,ba~$.w
ALF "O WOR" .fio<mqi
ALF "LD " 4FfwpO3,Ku
END START end of the program ir?Uw:/f
[JX}1%NA
v`z=OHc
Nuva x?k
<..直接输出..> ~ERRp3Ee?
Hello, world! Y(#d8o}}#
2.HZ+1
<..或者..> USnD7I/b
*@\?}cX
<. NPB ,q& Th
// 不带换行 pO-s@"j]
? "Hello, world!" w*&n(zJF>
6nY
)D6$JG
// 或者 X]+(c_i:hC
Ux%\Y.PPI
// 带换行 ~xlMHf
?? 'Hello, world!' ,p[\fT($]
.> C*W.9
0I(GB;E
yZj}EBa
OCaml r|JiGj^om
let main () = UtW"U0A
print_endline "Hello world!";; ]AFM Y<mB
1A`?y&
Ll
j(@g
Pascal dCoi>PO
program Hello; gJcXdv=]2
begin ery?G-
writeln('Hello, world!'); `aO@N(
end. (IoPU+1b
SBN_>;$c5}
!7Yt`l$$z
Perl lH,]ZA./
#!/usr/local/bin/perl .qb_/#Bas
print "Hello, world!\n"; }0Kqy;
gT5Ji~xI
vs'L1$L'c
PHP 9GtVI^]
<?php V\rIN}7
print("Hello, world!"); @T,H.#bL
?> #v~S",*.f
[MQJ71(3
02J6Pn3
Pike ok\/5oz
#!/usr/local/bin/pike }VGI Y>v
int main() Jc"$p\ $-
{ SqA+u/"j2
write("Hello, world!\n"); q~g&hR}K
return 0; *OGXu07 !
} P/gb+V=g!
ax{-Qi7z-+
0oi5]f6g?8
PL/I zZ+LisS s&
Test: procedure options(main); ,#
jOf{L*
declare My_String char(20) varying initialize('Hello, world!'); Z:B Y*#B
put skip list(My_String); Cs1%g
end Test; wsb=[$C
;qVEI/
YnO1Lf@
Prolog ,QHx*~9
goal !irX[,e
write("hello,world!"). C!/8e
(!N
Xv5Ev@T
9h,yb4jPP
Python 3]kAb`9[K2
#!/usr/local/bin/python [[66[;
print "Hello, world!" |E_+*1l q.
.k:&&sAz
d$?n6|4
REXX Alk*
"p
say "Hello, world!" ++{+
#s6
C#?d=x
sm&rR=b
Ruby |_xiG~
#!/usr/bin/ruby 0.Ol@fO
print "Hello, world!\n" seD+~Y\z
c"sw@<HG
*}iT6OJ
Scheme D16;6K'{
(display "Hello, world!") qf&a<[p~
(newline) 1\608~ZH
8s5ru)
v!'@NW_
sed (需要至少一行输入) "RJk7]p`*
sed -ne '1s/.*/Hello, world!/p' I{g2q B$6
'a{5}8+8
K{w=qJBM
Smalltalk C^42=?
Transcript show: 'Hello, world!' 9B;Sk]y
q}A3"$-F
}?q nwx.
SNOBOL {FmFu$z+[
OUTPUT = "Hello, world!" cCbr-Z&
END g$T_yT''
.idl@%
=cKk3kJC
SQL 2Ku#j
('
create table MESSAGE (TEXT char(15)); Cg\)BHv~
insert into MESSAGE (TEXT) values ('Hello, world!'); z` ?xS
select TEXT from MESSAGE; dSOn\+
drop table MESSAGE; }]GK@nn7
eD1MP<>h
>]|^Ux,WZ
Tcl wkpVX*DfRE
#!/usr/local/bin/tcl J&Qy