“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。 CxQ,yd;>
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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》。 umn^QZ,
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以下是用不同语言写成的Hello World程序的几个例子: `:O.g9
Ada X0TGJ,yW(
with Ada.Text_Io; use Ada.Text_Io; aC 0Jfo
procedure Hello is X6 cb#s0|
begin $O!<Zz
Put_Line ("Hello, world!"); qEz'l'%(
end Hello; P9wDTZ
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汇编语言 ibw;BU
EBLoRW=8ld
x86 CPU,DOS,TASM K 5[ 3WHQ
MODEL SMALL bOKNWI
IDEAL giJyMd}x
STACK 100H ~C
x2Q4E
Tyl"N{ _
DATASEG +,>bpp1
HW DB 'Hello, world!$' D<6kAGE
#::vMnT
CODESEG HpAZ{P7
MOV AX, @data *X=-^\G
MOV DS, AX KL`>mJo$
MOV DX, OFFSET HW v}D!
MOV AH, 09H tYa8I/HpT
INT 21H 0MPDD%TP
MOV AX, 4C00H V1;-5L75
INT 21H AFED YRX
END RfRaWbn
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x86 CPU,GNU/Linux,NASM $@wkQ%
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). fh<G&E8
p
;Enter this into "hello.asm" then type: bnQO}G
;"nasm -f elf hello.asm" `I$A;OPK7
;"ld hello.o -o hello" UC@ "<$'C
;"./hello" pC8i&_A
[NcOk,
section .data ;data section declaration Pme?`YO$x
msg db 'Hello World!',0AH
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len equ $-msg ;string length i-b7
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section .text ;code section declaration >m!.l{*j>N
global _start ;entry point (start of execution) q4=RE
_start: mov edx,len ;string length hNy S
mov ecx,msg ;string start -AQX-[B
mov ebx,1 ;file handle: stdout )I4t l/
mov eax,4 ;sys_write r kl7p?
int 80h ;kernel system call L+L9)8FJ
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mov ebx,0 ;return value P0=F9`3wb
mov eax,1 ;sys_exit {5JXg9um
int 80h ;kernel system call C-Z,L#
}1dh/Cc`
*93 N0m4Rl
x86 CPU,Windows,MASM32 i\G3
u#
.386 9n'p 7(s%
.model flat,stdcall {9MYEN}FO
option casemap:none "Wp<^s sMo
;Include 文件定义 Le!I-i(aD
include windows.inc 3F1Z$d(
include user32.inc KK6YA
includelib user32.lib ?Dm&A$r
include kernel32.inc M<Mr (z
includelib kernel32.lib 0*^Fk=>ej
;数据段 (tv h9o
.data nabN.Ly
szCaption db 'A MessageBox!',0 lTXU
szText db 'Hello,world!',0 #UQ[8e
;代码段 e)kf;Hkf
.code /slML~$t<
start: 9@06]EI_
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 7Go!W(8
invoke ExitProcess,NULL =F4}
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> f]}F_]
end start }UrtDXhA
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Ipe; %as#
AWK 85mQHZ8aR
BEGIN { print "Hello, world!" } E_oe1C:
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_c2#
BASIC x3Uv&
传统版BASIC(例如GWBASIC): :-)[B^0
H =jnCGk
10 PRINT "Hello, world!" ]!N5jbA@
20 END OBZj-`fq J
c
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或在提示符输入: jYkx]J%S
1yu!:8=ee
?"Hello, world!":END 2wd(0K}b
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现代版BASIC(例如Quick BASIC): H &JKja}`
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Print "Hello, world!" r!S iR(
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以下的语句在Quick BASIC中同样有效: ,#G@ri:B
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? "Hello,world!" _OY ;SJ(
5IMH G%W7
E !8y|_(j
BCPL NmQ]qv
GET "LIBHDR" 9O"?T7i"#
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LET START () BE T*IudxW
$( G\Me%{b#
WRITES ("Hello, world!*N") 5+UiAc$
$) dY,'6JzC
vl<J-+|0C
pqe**`z@y
Befunge pGIeW}2'9
"!dlrow olleH">v zin,yJ
, 0`W~2ai
^_@ OjN]mp-q
!cZsIcIe
[Z0e$
Brainfuck .\VjS^o&Z&
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<
51j
+++++++++++++++.>.+++.------.--------.>+.>. bbJa,}R
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C 6]Jv3Re'(I
#include <stdio.h> YblRwic
4g 1h:I/
int main(void) $3L7R
{ 3X:F9x>y
printf("Hello, world!\n"); 7,1idY%cy
return 0; JI^w1I, T
} W{0:8_EI
3 yElN.=
,w6?}
N
C++ u7mj
#include <iostream> k2=uP8
mT.F$Y9
int main() L,WKL.
{ =4zsAa
std::cout << "Hello, world!" << std::endl; HiC\U%We
return 0; rLwc=(|
}
; H3kb
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UW+I 8\^
C++/CLI 8X%;29tow
int main() C?O{l%0
{ E8xXr>j>#
System::Console::WriteLine("Hello, world!"); NB^.$39n
} J=$v+8&.
<ESAoY"RPN
4Mprc~ 7vr
C# (C Sharp) 3!,%;Vz=
class HelloWorldApp #_E8>;)k
{ x!< C0N>?z
public static void Main() K)qmJ-Gub
{ t~AesHZpk
System.Console.WriteLine("Hello, world!"); yaf2+zV*
} alG}Aw#gS
} y|p:^41Ro
Qu\E/T`
{M$1?j"7
COBOL ;
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IDENTIFICATION DIVISION. DGU$3w
PROGRAM-ID. HELLO-WORLD. '~@WJKk
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ENVIRONMENT DIVISION. /'I/sWEV
<W?,n%
DATA DIVISION. 4_mh
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PROCEDURE DIVISION. rh!4 1
DISPLAY "Hello, world!". K|B1jdzL
STOP RUN. gs!{'=4wT
[J^,_iN[.
v}!,4,]:&
Common Lisp cq 0jM;@d
(format t "Hello world!~%") k@Hu0x
&8;mcM//4
ENGw <
DOS批处理 Rl,B !SF
@echo off xpV8_Gz;
echo "Hello, world!" 'g^]ZTxb
T|E ;U
+@!9&5SA
Eiffel /
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class HELLO_WORLD snyx$Qx(
9Kqr9U--v
creation m:h]nm
make s8tI_h
feature sST6_b
make is 89L-k%R
local TWn7&,N
io:BASIC_IO H&GMq5)B
do tuv4~i<
!!io 0{j>u`
io.put_string("%N Hello, world!") ZQyT$l~b
end -- make -du+iOe?
end -- class HELLO_WORLD J|ILG
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eZUK<&0x5
Erlang UL oTPx@N
-module(hello). N%T-Q9k
-export([hello_world/0]). 'aCnj8B
_-D(N/
hello_world() -> io:fwrite("Hello, World!\n"). %o?fE4o'
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Forth /O8'8 sL5
." Hello, world!" CR %TLAn[LW(
uU<Yf5
{!-w|&bF
Fortran D.HAp+lx
WRITE(*,10) >6aCBS?2
10 FORMAT('Hello, World!') _z}d yp"I
STOP ^lQej%
END 9
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X=DJOepH'
*fjarZu
HTML UP,(zKTA
<HTML> '8}\! i&
<HEAD> o2jnmv~
<TITLE> Hello World! </TITLE> QZDGk4GG
</HEAD> 2bCa|HTv
<BODY> k_!z=6?[:
<p>Hello World!</p> HVC\(h,)i
</BODY> D0(gEb
</HTML> C&"8A\we
[%b<%m}L-
87*R#((
HQ9+ s&c^Wr
H |C5i3?
!x,3k\M
Uqkh@-6-
INTERCAL BG'gk#J+f
PLEASE DO ,1 <- #13 %`` FIv15w
DO ,1 SUB #1 <- #238 `E}2|9
DO ,1 SUB #2 <- #112 ']qC,;2
DO ,1 SUB #3 <- #112 2)U3/TNe
DO ,1 SUB #4 <- #0 KYlWV<sR
DO ,1 SUB #5 <- #64 5uu{f&?u)
DO ,1 SUB #6 <- #238 +8~S28"Wg3
DO ,1 SUB #7 <- #26 R
z[-
DO ,1 SUB #8 <- #248 ~M <4HC
DO ,1 SUB #9 <- #168 7C&`i}/t
DO ,1 SUB #10 <- #24 !D z:6r
DO ,1 SUB #11 <- #16 ;aD_^XY
DO ,1 SUB #12 <- #158 iA%3cpIc(Z
DO ,1 SUB #13 <- #52 -,Q<*)q{
PLEASE READ OUT ,1 YpuA,r;"
PLEASE GIVE UP n:7=z0
s
3lKIEPf6r
~)()PO
Java ma-|L3 #
public class Hello ,@<-h* m
{ M>0~Ek%3
public static void main(String[] args) xE + Go
{ zmuq4-.
System.out.println("Hello, world!"); U;;Har
} Qi[T!1
} .%*.nq
C@KYg/nYw
4E"qpy \(
JSP RzyEA3L'
<% d/7c#er
out.print("Hello, world!"); 8y+Gvk:
%> *gBaF/C
u_mm*o~)g
4I,HvP
MIXAL fF>H7
TERM EQU 19 the MIX console device number NeNKOW#X
ORIG 1000 start address X_=oJi|:
START OUT MSG(TERM) output data at address MSG +[z(N
HLT halt execution jP+4'O!s[
MSG ALF "MIXAL" .&*Tj}p
ALF " HELL" KnbP@!+c
ALF "O WOR" u |#ruFR
ALF "LD " vnIxI a
END START end of the program mV^dIm
Th"7p:SE?
r"rEVx#1=
Nuva ]ImS@!Ajjx
<..直接输出..> F*Qw%
Hello, world! 5ptbz<Xv
TzPVO>s
<..或者..> N\H(AzMw
Z3[,Xw
<. D@\97t+
// 不带换行 o6{XT.z5qx
? "Hello, world!" c5U1N&k5&
9N9|h y
// 或者 1a%*X UT
I\4I,ds
// 带换行 ti'OjoJL
?? 'Hello, world!' &9^c-;Vs
.> A~h8 >zz*
`7'(U)x,F
ZtIK"o-|!
OCaml L@v0C)
let main () = GhQ.}@*
print_endline "Hello world!";; bXt A4O
K)^.96{/@
j8N8|\n-
Pascal fDqlN`P@
program Hello; 7O"T`>
begin qo'pU/@
writeln('Hello, world!'); 23Eg|Xk
end. +y -:(aP
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:@Q_oyWE8
Perl eYS
#!/usr/local/bin/perl _gU[FUBtJ
print "Hello, world!\n"; Ih"f98lV
^gv)[
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PHP KxiZx I
<?php ;m;wSp
print("Hello, world!"); 'd/A+W
?> ;r8,Wx@f1C
.o
fYFK
Z^#7&Pv0
Pike <$ '#@jW
#!/usr/local/bin/pike b}[{'
int main() F7=a|g
{ 3`-[95w
write("Hello, world!\n"); R[o KhU
return 0; ' Bdvqq
} zYH6+!VBH#
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p61"a,Xc
PL/I x~KS;hA
Test: procedure options(main); I /RvU,
declare My_String char(20) varying initialize('Hello, world!'); (A"oMnjWd
put skip list(My_String); vW~_+:),e
end Test; mb?yG:L=0b
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A7ck-9dT/L
Prolog DfqXw^BKD
goal tjYe82
write("hello,world!"). 1eKJ46W
\QYs(nm?k
yKq;EcVx
Python ?jb7Oq#[
#!/usr/local/bin/python $YL}rM
print "Hello, world!" c[ =9Z;|
r`6XF
8CMI\yk
REXX "BEU%,w
say "Hello, world!" C%G-Ye|@
W5sVQ`S-
'L= g(
Ruby E-n!3RQ(w
#!/usr/bin/ruby l1!i3m'x
print "Hello, world!\n" c-`&e-~XKL
Br-bUoua
>iaZGXje
Scheme hLO nX<%a
(display "Hello, world!") VSM%<-iQ
(newline) |h8C}P&Z
m|e!1_:H
6V!yfps)
sed (需要至少一行输入) E&]S No<
sed -ne '1s/.*/Hello, world!/p' L P.-
=]"[?a >
V@T G"YF
Smalltalk sE]eIN
Transcript show: 'Hello, world!' `5h$@
c1b@3
qCIZW
SNOBOL &>sG xK
OUTPUT = "Hello, world!" Jtc?p{
END Jd/5Kx
B>-Iv_
{hVSVx8ZL
SQL <9B43
create table MESSAGE (TEXT char(15)); Vs m06Rj{
insert into MESSAGE (TEXT) values ('Hello, world!'); rt t?4
select TEXT from MESSAGE; 3Qn! `
drop table MESSAGE; )FE'#\
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0^tF_."Y
Tcl F;`es%8
#!/usr/local/bin/tcl )p ,-TtV
puts "Hello, world!" hoeOdWIpf
i^="*t\i
, lT8gQ|u
TScript ;LthdY()n(
? "Hello, world!" 9O P
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-N*g|1rpa
>q4nQ/eP
Turing CuU"s)
put "Hello, world!" ^#XxqVdPk
;I]TM#qGF
Hm1C|Qb
UNIX-style shell @v@'8E Q
程序中的/bin/sh可改为您使用的shell S\GG(#b!
h4!$,%"''
#!/bin/sh ;%Jp@'46
echo 'Hello, world!' QMHeU>
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69\0$O
GUI ! =I:Uc-Y
pO=bcs8Z
Delphi )` '
program HelloWorld; />)>~_-3
uses LBw,tP
Dialogs; v]Pw]m5=U
begin }evc]?1(
ShowMessage('Hello, World!'); In:h %4>
end. Ow+7o@$"/
]X@/0
wf<uG|90
Nuva {I`B?6K5
<. j@2-^q:`
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) ukvz#hdE
.> j^986
g)xzy^2e
Y==# yNwM
Visual Basic i1 C]bUXA
MsgBox "Hello, world!" I-&/]<5y
'或者 Lp1wA*
Print "Hello, world!" RhX
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+1F@vag7
<N+l"Re#]
Visual FoxPro ~"+[VE5
? "Hello, world!" RSzp-sKB
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j3sUZg|d
X11 Pr@EpO
用一个程序 UyTq(7uo
,Lox?}t
xmessage 'Hello, world!' uqX"^dn4u
&> }MoB
用C++和gtkmm 2 W $H8[G
]N2'L!4|;
#include <iostream> `[57U,v
#include <gtkmm/main.h> TJLz^%t
#include <gtkmm/button.h> ]-L/Of6F)|
#include <gtkmm/window.h> B~yD4^
using namespace std; Qh?q0VKU^
C'*1w
class HelloWorld : public Gtk::Window #q(BR{A>t
{ R*VZ=i
public: 7A3e-51>
HelloWorld(); (:M6*RV
virtual ~HelloWorld(); ;cxYX/fJ
protected: At +on9&=
Gtk::Button m_button; KDg!Y(m{
virtual void on_button_clicked(); rQN+x|dKMb
}; oPm1`x
NM[w =
HelloWorld::HelloWorld() : m_button("Hello, world!") 7o0ej#
{ 5orA#B
set_border_width(10); izmL8U
?t
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); + +D(P=4hi
add(m_button); T*|?]k
8@*
m_button.show(); QBai;p{
} YPGn8A
{hZZU8*
HelloWorld::~HelloWorld() {} @fbvu_-].
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void HelloWorld::on_button_clicked() BYNOgB1
{ )1lYfJ
cout << "Hello, world!" << endl; ]V><gZ
} oV,>u5:B
g7_a8_
int main (int argc, char *argv[]) 6;[iX`LL
{ q+|Dm<Ug
Gtk::Main kit(argc, argv); [<8<+lH=P
HelloWorld helloworld; )wSsxX7:
Gtk::Main::run(helloworld); >SSF:hI"J
} D#^v=U
$].< /
% 0fj~s;
Java dKZffDTZ
import java.awt.*; [Gt|Qp[
import java.awt.event.*; eEezd[p
vJmE}
public class HelloFrame extends Frame @ iao"&
{ ]5rEwPB
HelloFrame(String title) {3
zq.e{
{ EC?!%iO`
super(title); sL+/Eeb` c
} /!jn$4fd:
public void paint(Graphics g) S WYiI
{ nVs0$?}
super.paint(g); evu @uq
java.awt.Insets ins = this.getInsets(); c|96;=z~
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); v<3i ~a
} &[23DrI8
public static void main(String args []) lq1pgM ?Kf
{ CQ#p2
HelloFrame fr = new HelloFrame("Hello"); 7}TjOWC
EQu M|4$ix
fr.addWindowListener( Z78&Ib