“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。 W"{v2x i
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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》。 \Gm-MpW
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以下是用不同语言写成的Hello World程序的几个例子: >e2<!#er|
Ada AM"Nn
L"
with Ada.Text_Io; use Ada.Text_Io; :+{ ?
procedure Hello is -U<Upn)2
begin e{;OSk`x
Put_Line ("Hello, world!"); 1:NrP'W^
end Hello; =NbI%
a9n^WOJ6
gH2,\z`[4
汇编语言 B63pgPX
YY?a>j."a
x86 CPU,DOS,TASM x}U8zt)yD3
MODEL SMALL ze_{=Cv&Y
IDEAL j-CnT)W<
STACK 100H Ngr/QL]Q
Lb{e,JH
DATASEG *Ype>x{
HW DB 'Hello, world!$' @)kO=E d
IchCACK
CODESEG hlu:=<B
MOV AX, @data ,+qVu,
MOV DS, AX hjO*~
MOV DX, OFFSET HW WwC 5!kZ
MOV AH, 09H K =.%$A
INT 21H w;Q;[:y
MOV AX, 4C00H s[8@*/ds
INT 21H 2&+#Vsm`V
END J--m[X
T081G`li
MYBx&]!\
x86 CPU,GNU/Linux,NASM yCJ Fo
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). mzQ`N}]T:
;Enter this into "hello.asm" then type: b}T6v
;"nasm -f elf hello.asm" zkTp`>9R
;"ld hello.o -o hello" |IunpZV
;"./hello" Ngb(F84H?
v+jsC`m
section .data ;data section declaration KXV[OF&J
msg db 'Hello World!',0AH AtR?J"3E
len equ $-msg ;string length <I}2k
t}v2$<!I
section .text ;code section declaration b{fQ|QD{^E
global _start ;entry point (start of execution) @fuM)B1"
_start: mov edx,len ;string length
)>D+x5o]
mov ecx,msg ;string start g}p;\o
mov ebx,1 ;file handle: stdout pV6d
Id
mov eax,4 ;sys_write gPAX4'
int 80h ;kernel system call [2ax>Yk$
vP7K9Kx
mov ebx,0 ;return value GDYFU*0
mov eax,1 ;sys_exit 9%*wb`&
int 80h ;kernel system call #fj/~[Ajv
2F%W8Y3
LZ@|9!KDw
x86 CPU,Windows,MASM32 &z"krM]G
.386 jCTAKaq
.model flat,stdcall +0),xu
option casemap:none ;['[?wk
;Include 文件定义 0&ByEN99
include windows.inc @!&}}"<
include user32.inc &V>fYgui
includelib user32.lib yr#5k`&\_
include kernel32.inc AmwWH7,g
includelib kernel32.lib 4tSv{B/}
;数据段 7Cjd.0T=(
.data lTU$0CG
szCaption db 'A MessageBox!',0 b$k&dT\o
szText db 'Hello,world!',0 B\g]({E
;代码段 _(m't n>
.code c!8=lrT.
start: 3~e8bcb
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK .To;"D;j,
invoke ExitProcess,NULL H3{GmV8
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> K78rg/`
end start 8 6f2'o+
CF|]e:
GE|+fYVM-$
AWK ~[k%oA%W
BEGIN { print "Hello, world!" } UD~p'^.m_
i&8FBV-
PA6=wfc
BASIC mAk{"65V
传统版BASIC(例如GWBASIC): .qk]$LJF7
eMRar<)+#*
10 PRINT "Hello, world!" >;z<j$;F<
20 END PpLU
[sW.CK=3
或在提示符输入: +i\&6HGK;-
Sx
?"Hello, world!":END #d{=\$=
G8W#<1LE
现代版BASIC(例如Quick BASIC): RtG}h[k/X
"U.^lkN
Print "Hello, world!" {brMqE>P#
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以下的语句在Quick BASIC中同样有效: -T6(hT\
CIjZG ?A
? "Hello,world!" 'WHHc 9rG,
`>DP,D)w(
$./bjV%
BCPL Ifk#/d
GET "LIBHDR" s] /tYJYl
/v095H@
LET START () BE !L5jj#0
$( X0{/ydGF8
WRITES ("Hello, world!*N") k`".
$) :V)lbn\
B12$I:x`
C0=9K@FCb
Befunge y}C`&nW[=
"!dlrow olleH">v J/7R\;q`~o
, ?=GXqbS"
^_@ ;M]C1!D9#
yGg,$WM
E&yD8=vw
Brainfuck crO@?m1
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 3Rm#-T s
+++++++++++++++.>.+++.------.--------.>+.>. d2X[(3
[<`SfE
|%~+2m
C QrApxiw
#include <stdio.h> zF4 [}*
,fEO>
i
int main(void) Z -%(~
{ 61U<5:#l
printf("Hello, world!\n"); ,2oF:H
return 0; R~bC,`Bh
} ,n!vsIN
a:~@CUD
>I
_w@qr\4i=
C++ "QoQ4r<|
#include <iostream> 3cj3u4y
Bh&Ew
int main() W"L&fV+3
{ JcJmds
std::cout << "Hello, world!" << std::endl; ~_9"3,~o5
return 0; 0=w K:Ex
} ]0D}T'wM
X5YiFLH>y\
ThW,Y"
l
C++/CLI @1zQce>
int main() K}[>T(0E
{ ck#"*],
System::Console::WriteLine("Hello, world!"); L]a`"CH:a$
} TEUY3z[g
KlK`;cr?
U=bEA1*@0
C# (C Sharp) eMK+X \
class HelloWorldApp
2?Ye*-
{ ry};m_BY
public static void Main() >Ps7I
{ /8@m<CW2Y
System.Console.WriteLine("Hello, world!"); h5
Vv:C
} +b;hBb]R
} W{XkVKe1a
+@X5!S6
Z,N$A7SBE
COBOL 7iuQ9q^&
IDENTIFICATION DIVISION. w^K^I_2ge
PROGRAM-ID. HELLO-WORLD. Q5S,{ ZeT
&PcyKpyd
ENVIRONMENT DIVISION. ashcvn~z
S)He$B$pp
DATA DIVISION. n$m"]inX
Oc9#e+_&
PROCEDURE DIVISION. Ct$82J
DISPLAY "Hello, world!". -6Tk<W
STOP RUN. /E wGW
{>0V[c[~
"Clz'J]{
Common Lisp 5p?!ni9
(format t "Hello world!~%") e2CV6F@a
%u?HF4S'
QGiAW7b5
DOS批处理 4^c-D
@echo off b7C
e%Br
echo "Hello, world!" U7&x rif
"rXOsX\;
]O:M$ $
Eiffel ps1YQ3Ep&
class HELLO_WORLD L{g E'jCC
,xJrXPW
creation rl:KJ\*D
make g1DmV,W-Q
feature T+"f]v
make is $awi>#[
local 1;u4X`8
io:BASIC_IO K0+;bu
do yI:#
|w|
!!io Q/_[--0
io.put_string("%N Hello, world!") dAx96Og:X"
end -- make pw>m.=9|y
end -- class HELLO_WORLD ~WVO
cu#e38M&eE
bC@k>yC-
Erlang z?8~[h{i%
-module(hello). ~4.r^)\
-export([hello_world/0]). tP
~zKU
.M|>u_<Qd
hello_world() -> io:fwrite("Hello, World!\n"). f<[jwhCWV
i~=s^8n`l
s #:%x#
Forth c
yQ(fIYl
." Hello, world!" CR HgJb4Fi
'TN)Lb*
w=r&?{
Fortran 2x$x;
\*j
WRITE(*,10) L3y5 a?G
10 FORMAT('Hello, World!') vTr34n
STOP A,i()R'I
END t> Q{yw
x49!{}
k/&]KYwu
HTML P1 +"v*
<HTML> XOrfs sj
<HEAD> 90 {tI X
<TITLE> Hello World! </TITLE> 7u11&(Lz
</HEAD> 7-iIay1h"
<BODY> lhn8^hOJ/
<p>Hello World!</p> :,]S}R
</BODY> ,-*iCs<
</HTML> jy$@a%FD
_45cH{$sA
O@U?IF$
HQ9+ eVy2|n9rH
H |:iEfi]j
~P1_BD(
!oSLl.fQd
INTERCAL ='Oj4T
PLEASE DO ,1 <- #13 H;vZm[\0N-
DO ,1 SUB #1 <- #238 QrjDF>
DO ,1 SUB #2 <- #112 Rmh*TQu
DO ,1 SUB #3 <- #112 Vk<k +=7
DO ,1 SUB #4 <- #0 \&|CM8A
DO ,1 SUB #5 <- #64 mPt)pn!rA
DO ,1 SUB #6 <- #238 tFU;SBt8Ki
DO ,1 SUB #7 <- #26 M$#sc`4*
DO ,1 SUB #8 <- #248 2PC5^Ni/9@
DO ,1 SUB #9 <- #168 \d68-JS@~
DO ,1 SUB #10 <- #24 ;i)KHj'
DO ,1 SUB #11 <- #16 vb =CFV#
DO ,1 SUB #12 <- #158 XDmbm*~i
DO ,1 SUB #13 <- #52 P[gO85
PLEASE READ OUT ,1 _,;%mK
PLEASE GIVE UP _'iDF
HFh /$VM
f'/ KMe%<
Java 2ChWe}f
public class Hello (9.yOc4
{ cK}Pf+r>
public static void main(String[] args) ,7/
_T\d<
{ K^D82tP
System.out.println("Hello, world!"); a|x8=H
} A!HK~yk~Q
} 04-Zvp2
9`X&,S~e
N=fz/CD)I
JSP ]6~k4
<% W7e4pR?w
out.print("Hello, world!"); Y}1P~
%> XL"=vbD
v&0d$@6/U
>q|Q-I~gs
MIXAL az(5o
TERM EQU 19 the MIX console device number i.@*tIK
ORIG 1000 start address _EKF-&Q6
START OUT MSG(TERM) output data at address MSG <c%n?QK{
HLT halt execution ;~ee[W$1
MSG ALF "MIXAL" z[#6-T
&
ALF " HELL" &+;uZ-x
ALF "O WOR" cIZc:
ALF "LD " FLbZ9pX}
END START end of the program Y^eX@dEFR
u~Lu<3v
x`2pr
Nuva ~{QEL2
<..直接输出..> [b`$\o'-
Hello, world! n&7@@@cA
Fzs>J&sY&
<..或者..> ]7<m1Lg
Yf(im
<. HTNA])G
// 不带换行 +{vQSFW
? "Hello, world!" q!*MH/R
ABiC9[Q0
// 或者 -- S"w@
lZ a?Y@
// 带换行 wO.B~`y
?? 'Hello, world!' mVrK z
.> \9jpCNdJ
"'aqb~j^
9S"N4c>
OCaml Gc}0]!nrW9
let main () = 1Zq
print_endline "Hello world!";; S-,kI
7,su f }=
+3?`M<L0
Pascal R#fy60
program Hello; ;y>'yq}
begin t'Htx1#Zc[
writeln('Hello, world!'); cUM_ncYOP
end. ]
zIfC>@R
@ V5S4E
(\uAAW"
Perl 3GINv3_
#!/usr/local/bin/perl 7 s-`QdWX
print "Hello, world!\n"; y[p6y[r*
pP
oxVvG{
e5qvyUJM
PHP {jUvKB_x
<?php 'Aet{A=9
print("Hello, world!"); ,*w>z
?> g\j>qUjs%Q
C&oxi$J:p+
FLEg0/m0
Pike 3Pa3f >}-
#!/usr/local/bin/pike ])68wqD
int main() -_w~JCx
{ ?:JdRnH \
write("Hello, world!\n"); :7k`R62{
return 0; 1J+3a-0
} 59/Q*7ZJ
(V^QQ !:
* T\>
PL/I )_F(H)*
Test: procedure options(main); X%35XC.n
declare My_String char(20) varying initialize('Hello, world!'); &
]%\.m
put skip list(My_String); _we3jzMW
end Test; K.r!?cfv
W=M<
c@
>]C<j4
Prolog FcY$k%;'Q
goal y#nSk%"t"
write("hello,world!"). ew/KZE
@u<0_r
t
l#|J
rU!
Python 'bG1U`v=3
#!/usr/local/bin/python (T4k~T`3
print "Hello, world!" UT% #K %
UzN8G$92qF
B\NcCp`5
REXX @!,D%]8"
say "Hello, world!" -^y1iN'D
pO5v*oONz+
]&/0
Ruby CARq^xI-
#!/usr/bin/ruby i{4'cdr?
print "Hello, world!\n" 3l.Nz@a*
#Xj;f^}/
S]tkz*w0*
Scheme `7F@6n
(display "Hello, world!") =CGD
~p`
(newline) (PyTq
5:F
!;ZBL;qY9
6@i|Kw(:
sed (需要至少一行输入) SG1&a:c+.
sed -ne '1s/.*/Hello, world!/p' es{cn=\s
z`;&bg\8
S/KVN(Z
Smalltalk `f2W;@V0
Transcript show: 'Hello, world!' ;}n|,g>
'[ @F%
,K`E&hS
SNOBOL <tGI]@Nwk
OUTPUT = "Hello, world!" #IbS
END k q/t]%(
6zELe.tq
b"`ru~]
SQL {_?T:`
create table MESSAGE (TEXT char(15)); qAnA=/k`
insert into MESSAGE (TEXT) values ('Hello, world!'); 7j4ej|Fjo
select TEXT from MESSAGE; Cca~Cq[%*(
drop table MESSAGE; ^n6)YX
d%S=$}o
[BJ$|[11
Tcl rDK;6H:u{
#!/usr/local/bin/tcl $:T<IU[E
puts "Hello, world!" *vRNG 3D/
dxk;@Tz
0EcC
TScript tCd{G
c
? "Hello, world!" 5B8V$ X
&Bj,.dD/a
TXZ(mj?
Turing 49iR8w?k
put "Hello, world!" *1 n;p)K
VyB\]EBu
^aGZJiyJ
UNIX-style shell 3P%w-qT!N
程序中的/bin/sh可改为您使用的shell |G|*
=$&7IQ?
#!/bin/sh pil0,r
$D
echo 'Hello, world!' r\4*\
OL,/-;z6
!C9ps]6
GUI $]Q*E4(kV9
.rt8]%
Delphi !:]s M-cCt
program HelloWorld; >!:$@!6L
uses 2GHXn:V
Dialogs; /k4^&
begin OpWC2t)
ShowMessage('Hello, World!'); .E?bH V
end. (M+,wW[6
~0'_K1(H
zgEr ,nF
Nuva vkDZv@
<. 3I(dC|d
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) {[YqGv=fF
.> R=#q"9qz
-6hu31W
~u O:tL
Visual Basic s0~05{
MsgBox "Hello, world!" {<''OwQF~+
'或者 &KOG[tv
Print "Hello, world!" lp37irI:
N'lGA;}i
J};u25:}
Visual FoxPro XwHu:v'=
? "Hello, world!" 7 K;'7
P3,Z5|)
}mtC6G41Q
X11 Q2_WH)J 3
用一个程序 e]dPF[?7
twYB=68
xmessage 'Hello, world!' m11"i=S"
k"3Z@Px:
用C++和gtkmm 2 "/ a*[_sV
LV[66<T
#include <iostream> Z>>gXh<e[
#include <gtkmm/main.h> 8|S1|t,
#include <gtkmm/button.h> FcA)RsMI*
#include <gtkmm/window.h> Qwp\)jVi
using namespace std; Zh@4_Z9n!
]noP
class HelloWorld : public Gtk::Window Et@=Ic^E
{ rA1zyZlz
public: pAUfG^v
HelloWorld(); +[X.-,yW
virtual ~HelloWorld(); :uU]rBMo
protected: <ZHY3
Gtk::Button m_button; lzr>WbM{{p
virtual void on_button_clicked(); :$GL.n-?
}; RJ=c[nb
"2vNkO##
HelloWorld::HelloWorld() : m_button("Hello, world!") =hOj8;2
{ A/Fs?m{7U
set_border_width(10); yPzULO4
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); &dwI8@&
add(m_button); ~q'w),bE"Q
m_button.show(); t9$AvE#a!=
} ]sm0E@ 1
Y7b,td1
HelloWorld::~HelloWorld() {} Ul7pxzj
@>
+^<
void HelloWorld::on_button_clicked() pZ@W6}
{ /`j K
cout << "Hello, world!" << endl; OGE#wG"S
} :Z*02JwK
"S{6LWkD
int main (int argc, char *argv[]) NejsI un%
{ k #,Gfs
Gtk::Main kit(argc, argv); L8?Z!0D/h
HelloWorld helloworld; w/^0tZ~
Gtk::Main::run(helloworld); SS45<!iy
} npG+#z
]'1N_m]?
69<rsp(p
Java w|n?m
import java.awt.*; _>_ y@-b
import java.awt.event.*; 0N3tsIm>
KOAz-h@6
public class HelloFrame extends Frame XCqfAcNQ
{ =xlYQ}-(a
HelloFrame(String title) 63y':g
{ hNR>Hy\
super(title); yoA*\V
} -;/@;W
public void paint(Graphics g) A
Eyr_!G,
{ 33v%e
super.paint(g); =aCIaL&9Y
java.awt.Insets ins = this.getInsets(); 00.iMmJ
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); u%gm+NneK
} ?:;hTY
public static void main(String args []) fAY2V%Rft
{ 8^f[-^%
HelloFrame fr = new HelloFrame("Hello"); pn_gq~5ng
:[X}.]"
fr.addWindowListener( iK6<^,]'
new WindowAdapter() 6!Tf'#TV~!
{ Lct+cKKU
public void windowClosing(WindowEvent e) hF=V
?\
{ (J,Oh
System.exit( 0 ); h.s<0.
} 9B6_eFb
} /kviO@jm4(
); $Zu4tuXA
fr.setResizable(true); 7PQj7&m
fr.setSize(500, 100); g)r,q&*
fr.setVisible(true); ]TTJr C:
} [(e`b
} Jk6/i;4|
dn.c#,Y
u):Rw
Java Applet I;":O"ij\
Java Applet用于HTML文件。 |)P;%Fy9
\<MTY:
HTML代码: ][$$
=
yn ?U7`V
<HTML> ywsz"/=@
<HEAD> BUy}Rn
<TITLE>Hello World</TITLE> .*wjkirF#~
</HEAD> jtVPv]
<BODY> raI~BIfe
uwS'*5tU
HelloWorld Program says: FUTyx"
hwol7B>
<APPLET CODE="HelloWorld.class" WIDTH=600 HEIGHT=100> !PP?2Ax
</APPLET> Nm:|C 3_I
kp
&XX|
</BODY> ?k7/`gU
</HTML> 1
FIiX
{*]=qSz
Java代码: '?!<I
&MGgO\|6
import java.applet.*; Z`1o#yZ
import java.awt.*; D<L{Z[
h|/*yTuN.y
public class HelloWorld extends Applet VT~
^:-]
{ cB])A57<
public void paint(Graphics g) Sm I8&c
{ Hd@T8 D*A
g.drawString("Hello, world!", 100, 50); cJE>;a
} []fj~hj
} W!9f'Yn
RV @(&