“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。 |$~]|SK
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 M0OIcMTv
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以下是用不同语言写成的Hello World程序的几个例子: (@;^uVJP
Ada dczSW]%
with Ada.Text_Io; use Ada.Text_Io; B]6Lbp"oo
procedure Hello is o2q-x2uB
begin W1Ye+vg/s
Put_Line ("Hello, world!"); 8=zREt<Se
end Hello; M^>l>?#rl
o$V0(1N
#M5d,%?+#[
汇编语言 t)rPXvx}!
nHRk2l|
x86 CPU,DOS,TASM N
Z,} v3
MODEL SMALL 69apTx
IDEAL (hg6<`
STACK 100H gGx(mX._L?
_*b`;{3
DATASEG )VqPaKZl
HW DB 'Hello, world!$' oe0YxSauL
nwC*w`4
CODESEG
|=![J?
MOV AX, @data [IAk9B.\
MOV DS, AX >yHtGIHe-
MOV DX, OFFSET HW \sfc!5G
MOV AH, 09H
Gv}Q/v
INT 21H [Q J
MOV AX, 4C00H rm$dv%q
INT 21H ;Krb/qr4_
END 3la `S$c
#y[omla8
F`2h,i-9
x86 CPU,GNU/Linux,NASM 67Qu<9}<-
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). |]k,0Y3v
;Enter this into "hello.asm" then type: 11kyrv
;"nasm -f elf hello.asm" V0W4M%
;"ld hello.o -o hello" dU2;
;"./hello" :]CL}n$*
DT)][V^w
section .data ;data section declaration r>TOJVT&]
msg db 'Hello World!',0AH uOy/c 8`
len equ $-msg ;string length DuDt'^]
d_0(;'
section .text ;code section declaration :N"&o(^
global _start ;entry point (start of execution) j3T)gFP
_start: mov edx,len ;string length $!y^t$u$@
mov ecx,msg ;string start AI#.+PrC{/
mov ebx,1 ;file handle: stdout yNn=r;FZQ
mov eax,4 ;sys_write Y4swMN8Bq
int 80h ;kernel system call S<*IoZ?T
(v|<"
tv
mov ebx,0 ;return value aNNRw(0/
mov eax,1 ;sys_exit /h.{g0Xc
int 80h ;kernel system call wU<j=lY?f
MSeg7/ MF
F4WX$;1
x86 CPU,Windows,MASM32 nvXjW@)`
.386 '@h
.model flat,stdcall [rK`BnJX
option casemap:none #N>66!/V
;Include 文件定义 EG$-D@o\I
include windows.inc $C fp1#
include user32.inc |YyNqwP`,
includelib user32.lib gO"G/
include kernel32.inc Zf<T`'_d
includelib kernel32.lib e@TwZ6l
;数据段 Ak('4j!*}^
.data 0)~c)B:5
szCaption db 'A MessageBox!',0 yt="kZ
szText db 'Hello,world!',0 C4.GtY8,d
;代码段 US"g>WLwJ
.code HiU)q
start: "-dA\,G
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK l"nS+z
invoke ExitProcess,NULL ~D4l64
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Q1x&Zm1v
end start Q~svtN
FdzdoMY
&Mudu/KTr
AWK ;DYS1vG o
BEGIN { print "Hello, world!" }
F;}JSb"
Cb+$|Kg/"b
\gPMYMd
BASIC tp7$t#
传统版BASIC(例如GWBASIC): R2-F@_
Y:,C_^$w;
10 PRINT "Hello, world!" JW^ ${4
20 END Q*PcO \Y!y
Q>Z~={"
或在提示符输入: 7kE+9HmfMk
d4\JM 65
?"Hello, world!":END {4Kvr4)4
9wldd*r
现代版BASIC(例如Quick BASIC): ?#(LH\$l_
8zj&e8&v
Print "Hello, world!" qmFbq<&
WH1" HO
以下的语句在Quick BASIC中同样有效: >uq0}HB$a
,&S0/j
? "Hello,world!" pInEB6L.P
Y!_c/ !Tx
5!qf{4j
BCPL rnhLv$
GET "LIBHDR" sfn^R+x4,9
tNzO1BK
LET START () BE x}c
$( o)@nnqa
WRITES ("Hello, world!*N") ,;w~ VZ4
$) ZZo<0kDk
(P-^ PNz&
v:/!OvLe
Befunge cRrJZ9
"!dlrow olleH">v 'ZMh<M[
, >(igVaZ>
^_@ sZ&|omN
B47 I?~{
wW\@^5
Brainfuck U.t][#<3
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 1aRTvaGo
+++++++++++++++.>.+++.------.--------.>+.>. <af#
C2`B
-sJD:G,%
sa o &
C 7JQ4*RM
#include <stdio.h> b,~pwbHf
MT>(d*0s
int main(void) |*g#7YL
{ BX[IWP\%
printf("Hello, world!\n"); JnK<:]LcK
return 0; u]Vt>Ywu
} n)q8y0if
~$T>,^K
y
Bv@p9 ]
n
C++ k
$^/$N
#include <iostream> $aJay]F
P`Ku.
ONQ
int main() =Vs?=|r
{ Kj
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std::cout << "Hello, world!" << std::endl; B;=Z^$%T
return 0; eUNaq&M
} &57~i=A
3
ms}o[Z@n
}?mSMqnB
C++/CLI r7R'beiH
int main() -9{N7H
{ vPYHM2
System::Console::WriteLine("Hello, world!"); Jaw1bUP!oK
} O8\f]!O(
1DcBF@3sWG
COHBjufmR
C# (C Sharp) >Df;1:U
class HelloWorldApp ?y>ji1
{ 18F}3t??
public static void Main() )YEAk@h@
{ RDDA^U7y#
System.Console.WriteLine("Hello, world!"); tb~E.Lm\
} OjlX<y.
} ZXb{-b?[`
v^o`+~i
BXdk0
COBOL zKJQel5
IDENTIFICATION DIVISION. 4pT^*
PROGRAM-ID. HELLO-WORLD. AeEdqX)
}gXhN"
ENVIRONMENT DIVISION. !^F_7u@Q
nm<VcCc
DATA DIVISION. 9Xg7=(#
_p: n\9k
PROCEDURE DIVISION. 4bL *7bA
DISPLAY "Hello, world!". b?`2LAgn
STOP RUN. %b*N.v1+
$-UVN0=
/YZMP'v
Common Lisp g!_#$az3
(format t "Hello world!~%") Yn [
F:Z
&D{!zF
M.y!J
DOS批处理 R$l-
7YSt
@echo off Zx{ Sxv"
echo "Hello, world!" HM)D/CO,?
64U|]gd$
Ua|iAD1
Eiffel `!N}u
class HELLO_WORLD deYv&=SPl
baG_7>Q9H
creation oZ/"^5
make @:CM<+
feature j$_?g!I=gK
make is EmO[-W|2
local dDl+
io:BASIC_IO R2~y<^.V`Y
do %>+lr%B
!!io v4Ag~Evcx
io.put_string("%N Hello, world!") Peph..8 Z
end -- make hY{4_ie=8
end -- class HELLO_WORLD Dx /w&v
tx[;& ;
Ws3z-U>j
Erlang yc]_ ?S>9
-module(hello). p2l@6\m\
-export([hello_world/0]). )vOBF5
+-;v+{
hello_world() -> io:fwrite("Hello, World!\n"). w{T$3F`@9
8i;drvf
-:d{x#
Forth
[>GblL
." Hello, world!" CR Ji,;ri2i
}*9F `=%F
5s^vC2$)
Fortran |*J;X<Vm
WRITE(*,10) DI;LhS*z
10 FORMAT('Hello, World!') r0k:RJP
STOP @Yb8CB
END V}<<?_
~2hzyEh
9:RV5Dt
HTML oq|o"n)~
<HTML> 9.dZA9l@g
<HEAD> AFsieJ
<TITLE> Hello World! </TITLE> z"7?I$NQ
</HEAD> BR@gJ(2
<BODY> 7ZAxhFC
<p>Hello World!</p> t OnOzD
</BODY> +fozE?
</HTML> VWdTnu
&,p6lbP
7Tr '<(A
HQ9+ t4;gY298
H P;y!Y/$ C
hA/Es?U]
-u~:Gd*l0
INTERCAL V3*@n*"N;
PLEASE DO ,1 <- #13 k
"7,-0gz
DO ,1 SUB #1 <- #238 }3Ke
DO ,1 SUB #2 <- #112 g1F9IB42@<
DO ,1 SUB #3 <- #112 ;A"i.:ZT
DO ,1 SUB #4 <- #0 M^l%*QF[,q
DO ,1 SUB #5 <- #64 A`vRUl,c=
DO ,1 SUB #6 <- #238 s]=XAm"4
DO ,1 SUB #7 <- #26 fOSJdX0e|Q
DO ,1 SUB #8 <- #248 .u7grC C
DO ,1 SUB #9 <- #168 E<B/5g!
DO ,1 SUB #10 <- #24 &u"mFweS
DO ,1 SUB #11 <- #16 `3K."/N6c
DO ,1 SUB #12 <- #158 )knK'H (
DO ,1 SUB #13 <- #52 >3 p8o@:
PLEASE READ OUT ,1 qS}{O0
PLEASE GIVE UP >PdrLwKS
uW}M1kq?+l
gQhYM7NP{5
Java P%w!4v~"
public class Hello 7PfNPz<4+
{ {KTZSs $n
public static void main(String[] args) `tH F}
{ rWM5&M
System.out.println("Hello, world!"); -ImO y|
} 5``usn/&Kj
} .Q</0*sp
QRdtr
0Iyb}
JSP ow,! 7|m
<% / 8dRql-Ne
out.print("Hello, world!"); |t$%kpp
%> 44^jE{,9
54]UfmT%I
b83m'`vRM
MIXAL {Aj=Rj@
TERM EQU 19 the MIX console device number &u2m6 r>W
ORIG 1000 start address A}uWy^w
START OUT MSG(TERM) output data at address MSG ,4,./wIq
HLT halt execution "[_gRe*2
MSG ALF "MIXAL" HR'F
ALF " HELL" qssK0!-
ALF "O WOR" gZz5P>^
ALF "LD " 2R3)/bz-SV
END START end of the program nob}}w]~C
>IKIe
1NN#-U
Nuva 3P'Wk|j
<..直接输出..> '2p,0Bk9i
Hello, world! [;C*9Nl
</Dv?
<..或者..> `Z@qWB<
)\izL]=!t
<. <{HV|B7
// 不带换行 ,F|49i.K
? "Hello, world!" DnB :~&Dw
B1U7z1<
// 或者 99Nm? $g
%F0.TR!!n
// 带换行 U]E~7C
?? 'Hello, world!' hus9Zv4
.> V$MMK
NF*Z<$ '%
[-=y*lx%g
OCaml m8 *)@e
let main () = 5W_Rg:J{P
print_endline "Hello world!";; OJ#
d
)3!z2f: e
$r(9'm}W
Pascal #t&L}=G{%
program Hello; g % 8@pjk
begin f5t/=/6>F
writeln('Hello, world!'); c38ENf
end. @ql S #(
{ =IAS}
T5TAkEVl
Perl zW ; sr.
#!/usr/local/bin/perl -h&KC{Xab
print "Hello, world!\n"; y?xFF9W@H
ff2`4_,|
SOJkeN
PHP =D^R,Q
<?php PCiwQ4~
print("Hello, world!"); J@(69&
?> 2?(dS
/,^AG2]( f
z CFXQi
Pike .arWbTR)~U
#!/usr/local/bin/pike p) m0\
int main() _h P7hhR
{ 0-IL@Di`F
write("Hello, world!\n"); 0{.[#!CSk
return 0; t``q_!s}F
} Gxh1wqLR
.]K{8[:hq
N9BfjT}
PL/I <2fgao&-n
Test: procedure options(main); cFloaCz
declare My_String char(20) varying initialize('Hello, world!'); _ v3VUm#
put skip list(My_String); *L#\#nh7
end Test; \ H!Klp
Hie
eDS,}Z'
Prolog G57c 8}\4
goal lWk/vj<5
write("hello,world!"). RfzYoBN
A $W~R
.%+y_.l
Python v1\/ dQK
#!/usr/local/bin/python Zd8`95
print "Hello, world!" `E8D5'tt
BKd?%V8:Q
b_a6|
REXX *w[0uQL5Z
say "Hello, world!" kJ.0|l0
]q 3.^F
"g&hsp+i"A
Ruby w7QYWf'
#!/usr/bin/ruby k83S.*9Mx
print "Hello, world!\n" ;><m[ l6
Mk!bmFZOZ
ygYy [IZ
Scheme -qdt$jIM
(display "Hello, world!") ?OVje9
(newline) f}w_]l#[G
A/ 88WC$v
!:M+7kmr7t
sed (需要至少一行输入) YZ^mH <
sed -ne '1s/.*/Hello, world!/p' kt7x}F(?<
y1 a1UiHGP
N}KL'
Smalltalk lwm
9gka
Transcript show: 'Hello, world!' /-Z}=
*g[MGyF"
CO`?M,x>
SNOBOL 9E}JtLgT
OUTPUT = "Hello, world!" du_~P"[
END >Et~h65d5
5Kw?#
PP8627uP
SQL x.Tulo0/
create table MESSAGE (TEXT char(15)); .Ky)Co
insert into MESSAGE (TEXT) values ('Hello, world!'); )
(0=w4
select TEXT from MESSAGE; vL8Rg} Jh4
drop table MESSAGE; r*9*xZ>8u
H`1q8}m
DGNn#DP
Tcl G%viWWTY
#!/usr/local/bin/tcl WaSZw0U}y
puts "Hello, world!" 8^sh@j2L
7QRkXs
lcK4 Uq\q
TScript KkCsQ~po
? "Hello, world!" z `jLKPP!=
YP>J'{?b*"
kLc@U~M
Turing [ps4i_
put "Hello, world!" d'iSvd.
VxtX%McK
v2k@yxt(
UNIX-style shell 8*Ty`G&v
程序中的/bin/sh可改为您使用的shell 8.Ufw.
5
n'[>h0
#!/bin/sh nDyA][
echo 'Hello, world!' rE]Nr ;Ys
YdyTt5-
xjD."q
GUI 2#/23(Wc
e$/y~!
Delphi nw(R=C
program HelloWorld; "z*.Bk
uses 2MmHO2
Dialogs; $9P=
begin ) ]DqK<-
ShowMessage('Hello, World!'); >~_z#2PA
end. H3 -?cy
oW^>J-
rgDl%X2B
Nuva AN3oh1xe:
<. {Qc,Nl
[?
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) m#[9F']Z`
.> P^!g0K
maeQ'Sv_&
cQ'x]u_
Visual Basic
q*94vo-
MsgBox "Hello, world!" Zu2`IzrG#
'或者 +r7hc;+G
Print "Hello, world!" r+h%a~A#>
iJj!-a:z.
EIfqRRTA
Visual FoxPro {~w( pAx
? "Hello, world!" -v-kFzu
d2d8,Vg
x)Zb:"
X11 yYSmmgrX0
用一个程序 7r^Cs#b+I
QT
zN
xmessage 'Hello, world!' 5*+DN
U@
J9OL>!J
用C++和gtkmm 2 _iCrQJ0"T
v\CBw"
#include <iostream> %hN(79:g
#include <gtkmm/main.h> EZ:?
(|h
#include <gtkmm/button.h> :5$ErI
#include <gtkmm/window.h> R)ZzRz|/
using namespace std; K F_Uu
GyMN;|
class HelloWorld : public Gtk::Window vH-|#x~
{ U;TS7A3
public: 7)[2Ud8
HelloWorld(); bq)1'beW
virtual ~HelloWorld(); d}tmZ*q
protected: I\1"E y
Gtk::Button m_button; bcjh3WP
virtual void on_button_clicked(); $y,KDR7^
}; e$P^},0/
3 !8#wn
HelloWorld::HelloWorld() : m_button("Hello, world!") _>]/. w2=
{ H\n6t-l
set_border_width(10); (T$cw(!
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); `?.6}*4@_A
add(m_button); r7>FH!=:
m_button.show(); X@}7 #Vt
} ky]^N)
rp
dv{CUp7
HelloWorld::~HelloWorld() {} j>?nL~{
2bLc57j{`9
void HelloWorld::on_button_clicked() jtpHDS
{
F):kF_ho
cout << "Hello, world!" << endl; %'h:G
Bkd
} j^8HTa0Cy|
v;G/8>GRy
int main (int argc, char *argv[]) Rf8ZH
{ TCzlu#w
Gtk::Main kit(argc, argv); )quQI)Ym
HelloWorld helloworld; ==?%]ZE8
Gtk::Main::run(helloworld); o6|-
:u5_/
} 9z{}DBA
:|S[i('
f. >[ J
Java
^_3$f
import java.awt.*; E&z^E2
import java.awt.event.*; /O$~)2^h
T,a{mi.hNR
public class HelloFrame extends Frame )'g4Ty
{ ]AM*9!
HelloFrame(String title) ".Q]FE@>
{ ;nbEV2Y<
super(title); g'T L`=O
} 5xnEkg4q4
public void paint(Graphics g) PBW_9&