“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。 3x
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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》。 9[`\ZGWD
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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<dCvH
Ada 0}T56aD=!
with Ada.Text_Io; use Ada.Text_Io; jW[EjhsH
procedure Hello is st#^pWL
begin r|/9'{!
Put_Line ("Hello, world!"); Q
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end Hello; dwiLu& ]u
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汇编语言 ^1aY,6I:
t_(S e
x86 CPU,DOS,TASM :r{W)(mm
MODEL SMALL 7ks!0``
IDEAL w[)HQ1K
STACK 100H DQ0 UY
GpR,n2
DATASEG JxM32?Rm*w
HW DB 'Hello, world!$' `/WOP`'zM
r "\<+$ 7
CODESEG GW%!?mJ
MOV AX, @data *GdJ<B$
MOV DS, AX Vn_>c#B
MOV DX, OFFSET HW WM=)K1p0u
MOV AH, 09H OGq=OW
INT 21H L[Wi[S6=)g
MOV AX, 4C00H FEBRUk6.h
INT 21H +j$nbU0U
END k9VWyq__
2&AX_#P
P;|63"U
x86 CPU,GNU/Linux,NASM <YCR^?hJSi
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). i=fhK~Jd
;Enter this into "hello.asm" then type: wGHVq
fm5
;"nasm -f elf hello.asm" :z|$K^)7Z
;"ld hello.o -o hello" W4h ]4X
;"./hello" Z hCjY
)_?H BTG
section .data ;data section declaration `H^
H#W
msg db 'Hello World!',0AH j2 >WHh
len equ $-msg ;string length m]{/5L
^lK!tOeO
section .text ;code section declaration yC!>7@m
global _start ;entry point (start of execution) p-7?S^!l
_start: mov edx,len ;string length x'%vL",%
mov ecx,msg ;string start X6?Gxf,
mov ebx,1 ;file handle: stdout yDpv+6(a
mov eax,4 ;sys_write H3Zt3l1u+
int 80h ;kernel system call ,.Lo)[(
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mov ebx,0 ;return value ]a:T]x6'
mov eax,1 ;sys_exit A!$sOp
int 80h ;kernel system call v)*eLX$
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!8RJHMX&
x86 CPU,Windows,MASM32 =~dsIG
.386 e
>7Ka\
.model flat,stdcall V@1,((,l
option casemap:none c5[~2e
;Include 文件定义 R F;u1vEQ8
include windows.inc Y&i&H=U
include user32.inc ~4ijiw$
includelib user32.lib $u)#-X;x
include kernel32.inc fRzJiM{
includelib kernel32.lib T+!0`~`
;数据段 s>TC~d82
.data ;\T~Hc}&;
szCaption db 'A MessageBox!',0 u (`7F(R
szText db 'Hello,world!',0 e.!~7c_z?
;代码段 o+S?j*mv@
.code F5w=tK
start: 4k6:
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK qJXfc||Zg
invoke ExitProcess,NULL |CBJ8],mT
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> KF`mOSP
end start 8yuTT^
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#vPk
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AWK grJ(z)c
BEGIN { print "Hello, world!" } obgO-d9l
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Be'
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BASIC a]I~.$G
传统版BASIC(例如GWBASIC): M%Q_;\?]
AJP-7PPD
10 PRINT "Hello, world!" gO]8hLT
20 END _IvqZ/6Y(
cZw_^@!
或在提示符输入: 2d&HSW
"m}N
hoD4
?"Hello, world!":END j<L!(6B
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现代版BASIC(例如Quick BASIC): sWP_fb1
#}UI
Print "Hello, world!" RggZ'.\
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以下的语句在Quick BASIC中同样有效: Mo4igP
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? "Hello,world!" 9;A9Q9Yr
2y9$ k\<xV
3C#Sr6
BCPL e&9v`8}
GET "LIBHDR" Js9EsN%
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LET START () BE h<BTu7a`r
$( -TyBb]
WRITES ("Hello, world!*N") hWr}Uui
$) m;u :_4
s 8lfW6
asYUb&Hz88
Befunge `>k7^!Ds
"!dlrow olleH">v P0-K/_g
, @8SA^u0
^_@ gZ {
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kyD*b3MN
Brainfuck NcIr;
}
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< k,r}X:<6jz
+++++++++++++++.>.+++.------.--------.>+.>. Qgl5Jr.
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C /,ISx}
#include <stdio.h> tLGNYW!K
!LpFK0rw
int main(void) bX+"G}CRP
{ 3u=>Y^wu
printf("Hello, world!\n"); `Fb%vYf
return 0; x\5\KGw16
} QV=|'
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4'L.I%#tZ
C++ <!~NG3KW[>
#include <iostream> &3YXDNm
+`.,6TNVlY
int main() pA@BW:#
{ 9:*a9xT,
std::cout << "Hello, world!" << std::endl; 12 bztlv
return 0; HgOrrewj
} N<aMUV m
FC8#XZp
6W N(Tw
C++/CLI zUJPINDb
int main() D (">bR)1
{ l>@){zxL
System::Console::WriteLine("Hello, world!"); j.29nJ
} gCW
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xGK"`\V
C# (C Sharp) C*Dco{
EQ>
class HelloWorldApp ~4ysg[`
{ lJU]sZ9~b
public static void Main() cb _nlG!
{ WNiM&iU
System.Console.WriteLine("Hello, world!"); W%K=N-kE_
} ?qczMck_
} 3}i(i0+
j 4eq.{$
\l/<[ZZ
COBOL UphZRgT!N
IDENTIFICATION DIVISION. ":01M},RA
PROGRAM-ID. HELLO-WORLD. HJOoCf
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ENVIRONMENT DIVISION. WI\h@qSB
Vpf7~2[q%
DATA DIVISION. E
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IlMst16q5
PROCEDURE DIVISION. w;V+)r?w
DISPLAY "Hello, world!". ^e1mK4`
STOP RUN. #(r1b'jfP
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p~Mw^SN'
Common Lisp 1tFx
Z#(G
(format t "Hello world!~%") ROr| <
6Vy4]jdT5
biAa&
DOS批处理 6i*LP(n
@echo off `5t
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echo "Hello, world!" wWB^m@:4
L7$1 rO<
E>`gj~
Eiffel Rj/ y.g
class HELLO_WORLD ]0myoWpi3
4d
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creation :.W</o~\s
make 2M?L++i
feature Ve\P ,.
make is _t\)W(E&
local =_,j89E
io:BASIC_IO E3h-?ugO'
do 3 bll9Ey
!!io *vIC9./
io.put_string("%N Hello, world!") z]=jer
end -- make =}YaV@g<f
end -- class HELLO_WORLD uE,j$d
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k3r<']S^
Erlang Eilo;-El
-module(hello). qJEtB;J'
-export([hello_world/0]). ~DUOL~E
~X1<x4P\
hello_world() -> io:fwrite("Hello, World!\n"). ^97\TmzP{
l =^ ^l`
]YwvwmZ
Forth {#}?-X
." Hello, world!" CR S)G*+)
<+e&E9;>6
q|N4d9/b
Fortran ,PZ[CX;H@
WRITE(*,10) ]gB:ht
10 FORMAT('Hello, World!') q%8Ck)xz
STOP \Gz
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END rZG6}<Hx
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XQ$9E?|=
HTML <5sP%Fs )
<HTML> E JJW
<HEAD> [fr!J?/@
<TITLE> Hello World! </TITLE> ny[\yj4F
</HEAD> YEhPAQNj
<BODY> eLN[`hJ
<p>Hello World!</p> E#mpj~{-
</BODY> y'U-y"7y
</HTML> A7sva@}W
UpCkB}OhR1
WOuk>
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OiMr,
</)QCl' d
INTERCAL |bv7N@?e
PLEASE DO ,1 <- #13 \-R\xL
DO ,1 SUB #1 <- #238 Z6_E/S
DO ,1 SUB #2 <- #112 nO .:f
DO ,1 SUB #3 <- #112 K.: :P84m;
DO ,1 SUB #4 <- #0 Tlz~o[`&
DO ,1 SUB #5 <- #64 r>x>aJ
DO ,1 SUB #6 <- #238 be:=-B7!
DO ,1 SUB #7 <- #26 /7p1y v
DO ,1 SUB #8 <- #248 oq9gG)F
DO ,1 SUB #9 <- #168 bKP@-<:]
DO ,1 SUB #10 <- #24 2N}h<Yd9
DO ,1 SUB #11 <- #16 yU< "tg E
DO ,1 SUB #12 <- #158 q;H5S<]/
DO ,1 SUB #13 <- #52 }X^CH2,R
PLEASE READ OUT ,1 O(YvE
PLEASE GIVE UP s!\Gi5b
R)BH:wg"
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Java XT~]pOE;D
public class Hello ~mYCXf oc{
{ {.D/MdwW;
public static void main(String[] args) f&L8<ASFo
{ ^?o> (K
System.out.println("Hello, world!"); 5!}fd/}Uk
} ,S\AUUt%
} k{w
C+X-Cp
6eHw\$/
JSP z)XIA)i6
<%
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out.print("Hello, world!"); <+)B8I^
%> so@wUxF
/H<tv5mXJ
ps@{1Rn1
MIXAL -%6Y&_5VK
TERM EQU 19 the MIX console device number E _j=v
\
ORIG 1000 start address D|E,9|=v
START OUT MSG(TERM) output data at address MSG W``
-/
HLT halt execution /D
~UK"}
MSG ALF "MIXAL" } {<L<
ALF " HELL" `*HM5 1U
ALF "O WOR" (`FY{]Wz!
ALF "LD " - {|
END START end of the program &Y|AX2KUC
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+U*:WKdI?
Nuva fD ?w!7f-1
<..直接输出..> Jw)-6WJ!uO
Hello, world! }@Ou]o
<CY<-H
<..或者..> V}+Ui]ie|I
#JW~ &;
<. (GXFPEH8
// 不带换行 mM)d`br
? "Hello, world!" K1[(%<Gp
[pYjH+<
// 或者 px=r~8M9}
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// 带换行 d2[R{eNX=
?? 'Hello, world!' V{yk
.> Tl`HFZQ1
f4r)g2Zb[
h^=9R6im
OCaml RqRyZ*n
let main () = Nr:%yvk%s
print_endline "Hello world!";; {'1e?
4&+lc*
`/L D:R
Pascal TwLQ;Q
program Hello; 7bC)Co#:
begin { K*
writeln('Hello, world!'); 9>hK4&m^
end. TxXX}6
m. "T3K
hT?|:!ED.F
Perl i.G"21M
#!/usr/local/bin/perl !+Us) 'L
print "Hello, world!\n"; e]@R'oM?#`
w^wh|'u^_@
J^)=8cy
PHP Y!w {,\3
<?php ^.~m4t`U
print("Hello, world!"); ;P!x/Ct
?> r>3y87
]gG&X3jaKq
(H-}z`sy/@
Pike ~e#QAaXD#5
#!/usr/local/bin/pike Q]<6i
int main() "6zf-++%
{ ry!0~ir
write("Hello, world!\n"); zaMKwv}BR
return 0; o%.0@W
} YH/3N(],
y(h"0A1lW
R"V^%z;8o
PL/I '5
kSr(
Test: procedure options(main); 't<hhjPqY
declare My_String char(20) varying initialize('Hello, world!'); #AUV&pI[
put skip list(My_String); CwQRHi
end Test; _8'z"wF
_W^{,*p
0;avWa)Q
Prolog wwVg'V;
goal >[a&,gS
write("hello,world!"). !R@s+5P)U
2JX@#vQ4
D~LU3#n
Python KG9FR*"
#!/usr/local/bin/python DfV'1s4y
print "Hello, world!" >{@:p`*
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jz"-E
REXX YMD&U
say "Hello, world!" .:V4>
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*>8Y/3Y\B
Ruby =%ZR0cWPoI
#!/usr/bin/ruby 9G=HG={
print "Hello, world!\n" CWW|?
b5.L== >
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uJ=]T
Scheme Y4)v>&H
(display "Hello, world!") \>nY%*
(newline) yi@mf$A|
Kb,#Ot
G0&'B6I>
sed (需要至少一行输入) Zq\Vq:MX
sed -ne '1s/.*/Hello, world!/p' Q3|I.I e
lJ/{.uK
h(MS>=
Smalltalk MR-cO Pn
Transcript show: 'Hello, world!' =VOl
*
c?XqSK`',Z
0|D
l/1
SNOBOL PuoN<9 #
OUTPUT = "Hello, world!" $1bx\
END ->Bx>Y
!p$k<?WX c
F|&=\Q
SQL (X( c.Jj
create table MESSAGE (TEXT char(15)); <Z^qBM
insert into MESSAGE (TEXT) values ('Hello, world!'); +U= !svE
select TEXT from MESSAGE; RuuXDuu:VL
drop table MESSAGE; Z g~6
#;~dA
B#Z-kFn@
Tcl ]n$&|@
#!/usr/local/bin/tcl 9_I#{?
puts "Hello, world!" QLum=YB
n9x&Ws;
PHHX)xK
TScript r,-9]?i
? "Hello, world!" Y:'#jY*V
JB xizJBP
SE<hZLd"
Turing 8j<+ '
R
put "Hello, world!" 9o|#R&0
5X=ik7m^
@#W$7Gwf0
UNIX-style shell 8bP4
程序中的/bin/sh可改为您使用的shell >
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9a;8^?Ld%S
#!/bin/sh &nX,)"
echo 'Hello, world!' Ad]oM]
k}r)I.Lp
9HJA:k*k|
GUI 8w]>SEGFs
g{%2*{;i
Delphi _rjLCvv-
program HelloWorld; 2=p"%YSn
uses B@@j-
Dialogs; Th(F^W9
begin Eh*t;J=O
ShowMessage('Hello, World!'); Yvbk[Rb
end. [5O`
k>;a5'S
z3>oUq{
Nuva %zA$+eT
<. \~ql_X;3
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) 4bZ
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.> .e8S^lSl
Owz.C_{)
b1 NB:
Visual Basic 'I *&P5|
MsgBox "Hello, world!" p&4#9I5
'或者 cgvD>VUw
Print "Hello, world!" 6q]`??g.
KIfR4,=Q|
[H8QxJk
Visual FoxPro n]+v Eu|
? "Hello, world!" 4hh=z>$|l)
O)i]K`jk
</B5^}
X11 e:H9!
用一个程序 SuU %x2
b$Ch2Qz0q
xmessage 'Hello, world!' 6a\YD{D] _
v'zj<|2
用C++和gtkmm 2 2E
X Rq
6
SosVE>Z
#include <iostream> q|fZdTw
#include <gtkmm/main.h> !NfN16
#include <gtkmm/button.h> byUz
#include <gtkmm/window.h> qn4jy6
using namespace std; <dA1n:3o
7/$s!pV
class HelloWorld : public Gtk::Window Md4JaFA(
{ '5n67Hl 1
public: (xhwl=MX)
HelloWorld(); :5M7*s)e16
virtual ~HelloWorld(); `!$I6KxT
protected: z}[qk:
Gtk::Button m_button; U|HF;L
virtual void on_button_clicked(); /2\%X`]<
}; g~AOKHUP
8x J]K
HelloWorld::HelloWorld() : m_button("Hello, world!") +5BhC9=b
{ 0{GpO6!
set_border_width(10); C*I~14
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); 3h|:ew[
add(m_button); k)a-odNrb
m_button.show(); L--(Y+vmf
} \%! ~pfM I
\dz@hJl:
HelloWorld::~HelloWorld() {} eHjn<@
%4Thb\ T
void HelloWorld::on_button_clicked() IO\>U(:vx
{ W l+[{#
cout << "Hello, world!" << endl; uKcwVEu
} 4,|A\dXE
Evn=3Tw
int main (int argc, char *argv[]) :uD*Q/
{ #*<*|AwoW|
Gtk::Main kit(argc, argv); AGN5=K*D
HelloWorld helloworld; d:"]*EZ [
Gtk::Main::run(helloworld); $`emP
Hel
} <+QX Gz1
T&] J3TFJ
07_ym\N
Java 6DFF:wrm&
import java.awt.*; .kO;9z\B
import java.awt.event.*; ~Zc=FP:1
9p#Laei].
public class HelloFrame extends Frame lo*)%fy
{
1px8af]
HelloFrame(String title) s=+,F<;x.U
{ K;u<-?En
super(title); R{5xb
} L]goHs
public void paint(Graphics g) Qw ukhD7
{ &O