“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。 4rU!4l
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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》。 \`xkp[C
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以下是用不同语言写成的Hello World程序的几个例子: Z]:BYX'
Ada YJ2ro-X
with Ada.Text_Io; use Ada.Text_Io; czBi Dk4
procedure Hello is 1ZKzumF
begin $~'Tf>e
Put_Line ("Hello, world!"); xNN@ 1P[*
end Hello; }G1&]Wt_
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%TK&)Q% h5
汇编语言 wy4q[$.4v
e4qj .b
x86 CPU,DOS,TASM IvW@o1Q
MODEL SMALL iY.eJlfH
IDEAL <uF [,
STACK 100H Eqphd!\#6
\/Ij7nD`l%
DATASEG te2
Iu%5 z
HW DB 'Hello, world!$' )45_]tk>
u+% tPe
CODESEG YlUpASW
MOV AX, @data mpef]9
MOV DS, AX H(\V+@~>AD
MOV DX, OFFSET HW c)1=U_6 1
MOV AH, 09H "oE* 9J?e
INT 21H U4wpjHg
MOV AX, 4C00H x9}++r
INT 21H : z~!p~
END XN;/nU
sA_X<>vAKJ
:k1$g+(lP
x86 CPU,GNU/Linux,NASM G6Q4-kcK
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 5L&:_iQZy
;Enter this into "hello.asm" then type: A ^B@VuK
;"nasm -f elf hello.asm" *j<@yG2\gP
;"ld hello.o -o hello" piu0^vEEH
;"./hello" >RR<eYu7m
[~?M/QI9
section .data ;data section declaration # ,P(isEZ"
msg db 'Hello World!',0AH zPQ$\$7xB
len equ $-msg ;string length $j
!8?
/;+,mp4
section .text ;code section declaration %UmbDGDWI
global _start ;entry point (start of execution) j_pw^I$C
_start: mov edx,len ;string length q)Je.6$#X
mov ecx,msg ;string start EVSK8T,
mov ebx,1 ;file handle: stdout K.h]JD]o
mov eax,4 ;sys_write #KJZR{
int 80h ;kernel system call ;qT5faKB3J
Y:%"K
mov ebx,0 ;return value 8DT@h8tA
mov eax,1 ;sys_exit 7z>+w
int 80h ;kernel system call drX4$Kdf]
Ty}R^cy{d
di<B ~:l58
x86 CPU,Windows,MASM32 t>@yv#
.386 GG>Y/;^
.model flat,stdcall h*waRD
option casemap:none b.(XS?4o
;Include 文件定义 WFpl1O73
include windows.inc KF4see;;
include user32.inc WnO DDr
includelib user32.lib }1\?()rB
include kernel32.inc I tgH>L'
includelib kernel32.lib KPg[-d
;数据段 (>r|j4$
.data "9u-lcQ\
szCaption db 'A MessageBox!',0 >2t
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szText db 'Hello,world!',0 }*ODM6
;代码段 :X|AW?*
.code >VypE8H]x
start: C*]AL/
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK @ p"NJx"
invoke ExitProcess,NULL e)br`CD%
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> $;ch82UiX
end start `lvh\[3^
dgm+U%E
MXh^dOWR
AWK >5df@_'
BEGIN { print "Hello, world!" } tc5M$b3^2
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BASIC r \9:<i8
传统版BASIC(例如GWBASIC): }1@n(#|c
Za34/ro/T
10 PRINT "Hello, world!" ]zX\8eHp!
20 END enWF7`
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或在提示符输入: MyK^i2eD
a_xQ~:H
?"Hello, world!":END M3)v-"
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现代版BASIC(例如Quick BASIC): Bfu/9ad
rK*hTjVn
Print "Hello, world!" J,MT^ B
J: L -15
以下的语句在Quick BASIC中同样有效: ryz/rf
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? "Hello,world!" \-DM-NrZ1U
7^`RP e^a+
aS3P(s L
BCPL :17ee
GET "LIBHDR" "[FCQ
U$MWsDn
LET START () BE @2QJm
$( m>g}IX&K'
WRITES ("Hello, world!*N") ;:-}z.7Y
$) ]v/t8`
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wn&[1gBxM
Befunge l!xgtP K
"!dlrow olleH">v pb,{$A
, ddGkk@CA
^_@ 1uKD&k%q
clij|?O
FjK Ke7
Brainfuck s0x@
u
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< M'pY-/.
+++++++++++++++.>.+++.------.--------.>+.>. @^w!% ?J
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! hOOpZf7
C "j*fVn
#include <stdio.h> D/+@d:- G
S(q4OQB{
int main(void) p{('KE)
{ +]aD^N9['
printf("Hello, world!\n"); <m|FccvQ
return 0; s>[vT?
} h8Dtq5t4
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B8P@D"u
C++ SLbavP#G
#include <iostream> :Kt{t46)
D/NIn=>j
int main() 0
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{ bCe[nmE2
std::cout << "Hello, world!" << std::endl; gwkZk-f\p
return 0; fb;hf:B:
} z.Ve#~\
)%-\hl]
-NI@xJO4(;
C++/CLI 'Gm!Jblo@
int main() jb6ZAT<8
{ j$JV(fz
System::Console::WriteLine("Hello, world!"); 0^|$cvYiL
} }VJ hw*s
-f
'q
{/,+_E/
C# (C Sharp) n^I|}u\
class HelloWorldApp Tk2&{S "
{ PhI{3B/
public static void Main() $[L)f|
l
{ +L<w."WG
System.Console.WriteLine("Hello, world!"); P89Dg/P
} }T^v7 LY
} 8?]%Qi
LXOF{FG
Jg?pW:}R
COBOL @b(gjOE
IDENTIFICATION DIVISION. '~!l(&X
PROGRAM-ID. HELLO-WORLD. q0xE&[C[M
0v,`P4_k
ENVIRONMENT DIVISION. lj% ;d'
>goAf`sqo
DATA DIVISION. LVz%$Cq,0
*?
orK o
PROCEDURE DIVISION. M KE[Yb?
DISPLAY "Hello, world!". ;Ef)7GE@\[
STOP RUN. '@1Qx~*]e
;/]c^y
19.!$;
Common Lisp \H'CFAuF
(format t "Hello world!~%") Ij,?G*
-a#AE|`
hgMnO J
DOS批处理 1\9BO:<K
@echo off OAQ O J'
echo "Hello, world!" `5aypJf1
s(DaPhL6Qm
8`R}L
Eiffel ^IegR>
class HELLO_WORLD '}[L sU
BsG[#4KM:
creation g960;waz3
make Ab|NjY:
feature L.~]qs|G/K
make is rzY@H }u
local TuhL:
io:BASIC_IO ?&bVe__
do |"(3]f\
!!io Vste$V
io.put_string("%N Hello, world!") a!]QD`
end -- make lbXkZ ,
end -- class HELLO_WORLD ,'0oj$~S:
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[T&y5"@
Erlang Zvw3C%In
-module(hello). ~k_zMU-1
-export([hello_world/0]). 74N\G1
%>}7$Y%
hello_world() -> io:fwrite("Hello, World!\n"). m&vYZ3vK[
U@ QU8
#]hkQo
Forth SYhspB
." Hello, world!" CR PL2Q!i`[o
9>Z#o<*_/
5/VB'N#7s
Fortran xa axj
WRITE(*,10) !6`nN1A
10 FORMAT('Hello, World!') zEL[%(fnc
STOP OnPLz"-
END tQ<2K*3]
vX )Y%I
yxq!.72
HTML .aRxqFi_
<HTML> x \{jWR%
<HEAD> g5HqU2
<TITLE> Hello World! </TITLE> ZuV
</HEAD> s,q!(\{Pv
<BODY> T1TZ+\
<p>Hello World!</p> 9Qd'=JQl
</BODY> Ss/="jC
</HTML> h$h`XBVZe;
mT$tAwzTC{
:Fk&2WsW:
HQ9+ ^^(ZK 6 d
H oW9rl]+
QVhBHAw
r+yLK(<zp
INTERCAL +N!{(R:"v}
PLEASE DO ,1 <- #13 Za?&\
DO ,1 SUB #1 <- #238 +u.L6GcB
DO ,1 SUB #2 <- #112 ps
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DO ,1 SUB #3 <- #112 &^>r<~]
DO ,1 SUB #4 <- #0 Z@umbyM
DO ,1 SUB #5 <- #64 PUo&>
DO ,1 SUB #6 <- #238
8eLL
DO ,1 SUB #7 <- #26 7dW&|U
DO ,1 SUB #8 <- #248 ,~w)@.
DO ,1 SUB #9 <- #168 ]<_+uciP5[
DO ,1 SUB #10 <- #24 t`{Fnf
DO ,1 SUB #11 <- #16 a}{! %5
DO ,1 SUB #12 <- #158 GDntGTE~sk
DO ,1 SUB #13 <- #52 9(]j
e4Cn
PLEASE READ OUT ,1 P;[mw(
PLEASE GIVE UP $SgD|
9
v#G ^W
.;s4T?j@w
Java CAO{$<M5m
public class Hello V&85<Y%Nl|
{ Grv|Wuli
public static void main(String[] args) mK4A/bsE
{ upKrr
System.out.println("Hello, world!"); ~:Nyv+g,$
} v}i}pQ\DK
} 85]UrwlA4
&GAx*.L
aKZD4;
JSP Aed"J5[a
<% c9
c Nlp
out.print("Hello, world!"); WDR!e2G
%> qa6up|xUnn
r8$TT\?~
QJ?!_2Ax
MIXAL st>t~a|T
TERM EQU 19 the MIX console device number tp&iOP6O
ORIG 1000 start address 4dAhJjhgD
START OUT MSG(TERM) output data at address MSG }+1o D{
HLT halt execution f|)t[,c
MSG ALF "MIXAL" NST6pu\,U
ALF " HELL" 03T.Owd
ALF "O WOR" $Tza<nA
ALF "LD " sjGZ
,?%
END START end of the program L&%iY7sC`
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.S;/v--F
Nuva
95/C4q
<..直接输出..> V}?5=f'
Hello, world! g<Xwk2_=g
n66_#X
<..或者..> Cz%ih#^b
\;<Y/sg
<. NGu]|p
// 不带换行 J^cDa|j
? "Hello, world!" EQ -\tWY
*yx:nwmo
// 或者 :C5N(x
^8)d8?}
// 带换行 2NM}u\%c/
?? 'Hello, world!' 8*X8U:.0o
.> VTU-'q
"]<Ut{Xb
$6N.ykJ
OCaml _=b[b]Ec$s
let main () = ak zb<aT
print_endline "Hello world!";; a/1{tDA
cl:YN]BK
o<y7Ut
Pascal /+iaw~={"
program Hello; i \~4W$4I
begin e M}Xn^}
writeln('Hello, world!'); ofJ@\xS
end. 4{TUoI6ii
Yi:+,-Fso
6m9Z5:xG
Perl tF4"28"h
#!/usr/local/bin/perl Q_Rr5/
print "Hello, world!\n"; YAO0>T<F
xAI<<[-
Lqt]
PHP R[b?kT-%
<?php :Vg,[\I{
print("Hello, world!"); BN=,>-O%
?> `k+k&t
^>>Naid
Lt)t}0
Pike ^J327
#!/usr/local/bin/pike (Q@+W|~
int main() TSOt$7-
{ [30< 0
write("Hello, world!\n"); P_9O8"W
return 0; Gc>\L3u
} &{>~|^
rl4-nA
a 3HS!/
PL/I Fw|5A"9'a'
Test: procedure options(main); R
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declare My_String char(20) varying initialize('Hello, world!'); E0YXgQa
put skip list(My_String); Tsa&R:SE
end Test; RxqXGM`4
A&z
|XQ!xFB
Prolog E|No$QO)
goal +!X^E9ra
write("hello,world!"). rVkHo*Q
"B.l j)
aFLm,
Python bH&[O`vf
#!/usr/local/bin/python _9<Ko.GVq
print "Hello, world!" 9khD7v
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vsc&$r3!5{
REXX rK];2[U
say "Hello, world!" f F?=W
(HY|0Bgr
,#<"VU2 bC
Ruby zF{5!b
#!/usr/bin/ruby &DgIykqN
print "Hello, world!\n" qUCiB}
)
~X\W\
n*U1
M
Scheme qV5ME#TJ
(display "Hello, world!") 9^`G `D
(newline) * ,,D%L
`6UW?1_Z5
zL1H[}[z+
sed (需要至少一行输入) w+PbT6;
sed -ne '1s/.*/Hello, world!/p' UAa2oY&
X|X6^}
lv,<[Hw1
Smalltalk Aj-}G^>#
Transcript show: 'Hello, world!' koe&7\ _@
"{|9Yis=
+b
1lCa_
SNOBOL zf#V89!]C"
OUTPUT = "Hello, world!" Aqq%HgY:t
END $KKrl
0/;T\9
SI U"cO4
SQL R|`}z"4C
create table MESSAGE (TEXT char(15)); $f_Brc:n {
insert into MESSAGE (TEXT) values ('Hello, world!'); ^qGH77#z
select TEXT from MESSAGE; VMsAT3^w
drop table MESSAGE; 5{VrzzOK}
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19h8p>Sx0
Tcl P6dIU/w
#!/usr/local/bin/tcl + ,0RrD )
puts "Hello, world!" %/jmQ6z^
H;%a1
D:M0_4S
TScript RR*<txdN
? "Hello, world!" 0~Z2$`(
O]90F
hI]KT a
Turing |&o%c/
put "Hello, world!" ?E=&LAI#
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%
=br-c
UNIX-style shell 26&^n
Uy
程序中的/bin/sh可改为您使用的shell pu=Q;E_f[
gs7H9%j{U
#!/bin/sh `dx+Qp
echo 'Hello, world!' P10`X&
M8Q-x-7
7JQ5OC3
GUI $*{PUj
zH.DyD5T;
Delphi ;spuBA)[X
program HelloWorld; 8J7xs6@
uses A!x_R {,yH
Dialogs; 1.]#FJe
begin xzbyar<
ShowMessage('Hello, World!'); ]+{Cy\*kR
end. 8yF15['
h1:uTrtA
"9>~O`l,
Nuva dyC: Mko=
<. D
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System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) r\.1=c#"bP
.> s
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"W?k~.uw
g>CF|Wj
Visual Basic x~?,Wv|cm
MsgBox "Hello, world!" x}?y@.sn8
'或者 k9vr6We'
Print "Hello, world!" p3M)gH=N
tz4MT_f
'p80X^g
Visual FoxPro s*>s;S?{|
? "Hello, world!" fILINW{Yk)
@kenv3[Lc
.9#4qoM'
X11 ]8NNxaE3 (
用一个程序 Ia=wf"JS)
Z2_eTC
u
xmessage 'Hello, world!' u-=S_e
gLa#y
用C++和gtkmm 2 mnzamp
Py^F},?J
#include <iostream> |FHeT*"
#include <gtkmm/main.h> -v'7;L0K
#include <gtkmm/button.h> +ByxhSIr
#include <gtkmm/window.h> idMb}fw>
using namespace std; 3ZGU?Z;R
>Vy=5)/i
class HelloWorld : public Gtk::Window B.-5$4*s
{ 0?qXD O&~
public: ]tA39JK-i
HelloWorld(); .]6_
virtual ~HelloWorld(); |\TOSaZ
protected: UTGR{>=>
Gtk::Button m_button; }QU9+<Z[r
virtual void on_button_clicked(); IAf,TKfe
}; " ^u
^W5rL@h_
HelloWorld::HelloWorld() : m_button("Hello, world!") V@&zn8?
{ }@J&yrqg
set_border_width(10); ]:(>r&'
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); c[}h( jkP
add(m_button); .^>[@w3
m_button.show(); <"{Lv)4
} -l+&Bkf
{";5n7<<)
HelloWorld::~HelloWorld() {} 7}(wEC
.'mmn5E
void HelloWorld::on_button_clicked() C(Ujx=G+3
{ M` Jj!
cout << "Hello, world!" << endl; $,otW2:)
} {:xINQ=}D
M7^PWC
int main (int argc, char *argv[]) zYO+;;*@
{ rVowHP
Gtk::Main kit(argc, argv); :BKY#uH~
HelloWorld helloworld; dRTtDH"%
Gtk::Main::run(helloworld); +Gqh
} b)9bYkd
Idop!b5!
YNA %/
Java $j0]+vT
import java.awt.*; +6@".<
import java.awt.event.*; hAi50q;z
7GY[l3arxv
public class HelloFrame extends Frame A<2_V1
{ &1YAPxX
HelloFrame(String title) "P\k_-a'
{ y5B4t6M(
super(title); fT [JU1
} }C!N$8d,
public void paint(Graphics g) VFz(U)._
{ U4qp?g+:
super.paint(g); *L7 ZyERs
java.awt.Insets ins = this.getInsets(); +C1/02ZJ
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); +Wh0Of
} "gjy+eosY
public static void main(String args []) g+;m?VJ
{ b/cc\d <
HelloFrame fr = new HelloFrame("Hello"); = zW}vm }
r7o63]
fr.addWindowListener( M%pxv6?""{
new WindowAdapter() g0GCg
{ hE0
p>R8
public void windowClosing(WindowEvent e) 0FD#9r
{ \M(0@#-$C
System.exit( 0 ); \E1[ /
} &+;z`A'|8
} {;1Mud
); E7@0,9AU
fr.setResizable(true); ' _Ij9{M
fr.setSize(500, 100); O`1_eK~1<
fr.setVisible(true); }wRHNBaEB
} {j O:9O@
} `K37&b