“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。 7Tc^}Q
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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》。 8dLK5"_3
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以下是用不同语言写成的Hello World程序的几个例子: NydF'N_1
Ada yIu_DFq%
with Ada.Text_Io; use Ada.Text_Io; a_\t(U
procedure Hello is Y#zHw<<E
begin RZ0+Uu/J
Put_Line ("Hello, world!"); XD%GNZ
end Hello; BC)1FxsGf
bMB@${i}
?$6(@>`f&t
汇编语言 aeE~[m
`hDH7u!U.
x86 CPU,DOS,TASM #2dH2k\F
MODEL SMALL (&1565
IDEAL ckkm}|&m
STACK 100H WCP2x.gb5
qK)T#sh
DATASEG g!;a5p6
HW DB 'Hello, world!$' f2?01PM,Q
&9EcgazV
CODESEG ]Jnrs
MOV AX, @data E/hO0Ox6
MOV DS, AX X- j@#Qb
MOV DX, OFFSET HW Z_4|L+i<{
MOV AH, 09H +' SG$<Xv
INT 21H UmL Boy&*
MOV AX, 4C00H Q"QZ^!zRl
INT 21H Tq,dlDDOR
END Z=beki]
!>:]k?$b
fuT Bh6w&
x86 CPU,GNU/Linux,NASM |qf ef&
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). XZ: 6A]62I
;Enter this into "hello.asm" then type: t8ORfO+
;"nasm -f elf hello.asm" ;NF:98
;"ld hello.o -o hello" S])*LUi
;"./hello" A$n:
'yR\%#s6
section .data ;data section declaration "}2I0tM
msg db 'Hello World!',0AH U
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len equ $-msg ;string length F{E`MK~f_
QsBC[7<jd-
section .text ;code section declaration zFr#j~L"
global _start ;entry point (start of execution) A+KpECP
_start: mov edx,len ;string length +o]J0Gu
mov ecx,msg ;string start X2`n&JE
mov ebx,1 ;file handle: stdout a28`)17z
mov eax,4 ;sys_write Q!(qb
int 80h ;kernel system call sj&1I.@,>
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mov ebx,0 ;return value bZ}T;!U?I
mov eax,1 ;sys_exit |=[._VH1
int 80h ;kernel system call ywj'O
e41
$49;\pBZl
1aezlDc*
x86 CPU,Windows,MASM32 aZmac'cz{
.386 2]E i4%jo
.model flat,stdcall VuuF _y;
option casemap:none %?J-0
;Include 文件定义 &X,6v
include windows.inc |<#yXSi
include user32.inc l4y>uZ>a
includelib user32.lib F#z1 sl'
include kernel32.inc Fnuheb'&m
includelib kernel32.lib 0U!_ o2]
;数据段 {Hz;*1?$k
.data T3t
w.yh
szCaption db 'A MessageBox!',0 >:0^v'[
szText db 'Hello,world!',0 =WK's8FB;8
;代码段 7! ~)a
.code u6
4{w,
start: 2>)::9e4
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK P}vk5o'
invoke ExitProcess,NULL ,Y@4d79
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> IO"q4(&;P4
end start G1:"Gxja
K<v:RbU|[1
T+>W(w
i
AWK [x0*x~1B
BEGIN { print "Hello, world!" } ;".]W;I*O
WL;2&S/{@
x5k6"S"1,
BASIC b<BkI""b
传统版BASIC(例如GWBASIC): GD4+f|1.*
8COGe=+o
10 PRINT "Hello, world!" Wqe0m_7
20 END " t,ZO
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或在提示符输入: 54Vb[;`Kkb
N`LY$U+N|
?"Hello, world!":END gyobq'o-
kZ=yb-~
现代版BASIC(例如Quick BASIC): nX<yB9bXDg
cUwR6I9
Print "Hello, world!" %V92q0XW
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以下的语句在Quick BASIC中同样有效: 70Ei<
k>#-NPU$
? "Hello,world!" `rpmh7*WV
Nk?L<'
"F?p Y@4
BCPL B]PG
GET "LIBHDR" rji<g>GQ
P?zL`czWd
LET START () BE \n-.gG
$( M aP -
WRITES ("Hello, world!*N") Kk>va->R
$) @Z89cTO
sM9N Hwg
Z
)X(
Befunge qcfg 55]'c
"!dlrow olleH">v '3B7F5uLx"
, _
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^_@ z[0t%]7l
!{XVaQ?x
7+m.:~H3}
Brainfuck SKJ'6*6
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< |q 0iX2W
+++++++++++++++.>.+++.------.--------.>+.>. rM20Y(|
}5y]kn
=l%|W[OO
C / 16 r_l
#include <stdio.h> cFoeyI# v
)>!y7/3
int main(void) yXro6u?rC
{ r?WOum
printf("Hello, world!\n"); UL3u2g;d
return 0; df9$k0Fx
} =Ct$!uun
2XV3f$, H
|L6 +e*
C++ B`|H}KU
#include <iostream> D#11
N^-K
B{NGrC`5)
int main()
1Pd2%
{ l6T5]$
std::cout << "Hello, world!" << std::endl; nk+9J#Gs
return 0; 0;" >.
} cB7'>L
UeaHH]U
_%<qZT
C++/CLI j8?rMD~
int main() Ki%RSW(_`
{ ?YnB:z*eV
System::Console::WriteLine("Hello, world!"); %kiPE<<x
} 7/FF}d
:qvaI,
+ $/mh
C# (C Sharp) eX o@3/
class HelloWorldApp cnM`ywKW
{ 7@ mP;K0
public static void Main() rv%^2h<&
{ um$L;-2:
System.Console.WriteLine("Hello, world!"); {y|j**NZ
} S{JBV@@tC
} -nk0Q_7N
p;LF-R
:JzJ(q/
COBOL 2%@<A
IDENTIFICATION DIVISION. @;{iCVW
PROGRAM-ID. HELLO-WORLD. g;!,2,De}
L_fiE3G|>
ENVIRONMENT DIVISION. X1GM\*BE
nY_+V{F
DATA DIVISION. 0zXF{5Up
ljjnqQ%
PROCEDURE DIVISION. t<znz6
DISPLAY "Hello, world!". }E\u2]
STOP RUN. u]Dds;~"b
B@,#,-=
]ru
UX
Common Lisp E=l^&[dIl
(format t "Hello world!~%") ~tqDh(
"@@Z{
o*s3"Ib
DOS批处理 pv,I_"
@echo off Dqm;twd>
echo "Hello, world!" H)i%\7F5
>FReGiK$T
q%MLj./?[
Eiffel RU,!F99'1
class HELLO_WORLD )5ISkbsxD
usI$
creation ~)iQbLI
make 2-gI@8NPI
feature TRQH{O\O
make is %o#|zaK
local _~uYNvmg
io:BASIC_IO a9TKp$LP`
do D,,
x<JG|
!!io |1Pi`^
io.put_string("%N Hello, world!") "9!CsloWhz
end -- make x-@6U
end -- class HELLO_WORLD $|}PL[aA#
}B2qtb3
|BA<> WE
Erlang gR8vF
-module(hello). L@8C t
-export([hello_world/0]).
WfkP
#[NNb?`F
hello_world() -> io:fwrite("Hello, World!\n"). K"9V8x3Wg
y`-5/4
CFiO+p&
Forth I07_o"3>qr
." Hello, world!" CR )`
90*
oH kjMqju
qn~:B7f
Fortran 5`[B:<E4
WRITE(*,10) w1
tg7^(@
10 FORMAT('Hello, World!') </Ry4x^A
STOP g(F? qP_K
END >O}J*4A>+#
B;xGTl@8
%Dm:|><V$b
HTML doV+u(J~
<HTML> Z1M{5E
<HEAD> $#d.@JWi
<TITLE> Hello World! </TITLE> L=5Fvm
</HEAD> o:Q.XWa@MG
<BODY> jd?NN:7
<p>Hello World!</p> Af7&;8pM
</BODY> M]M(E) *5
</HTML> wT-@v,$
@2)ImgK[
^Ts8nOGMh
HQ9+ 2Jc9}|,
H dX5|A_Ex
5mB'\xGO2
z7um9g
INTERCAL $|r
p5D6
PLEASE DO ,1 <- #13 !x1ivP
DO ,1 SUB #1 <- #238 2K$#U|Qi
DO ,1 SUB #2 <- #112 dNgjM
Q
DO ,1 SUB #3 <- #112 L\("
DO ,1 SUB #4 <- #0 :Y2J7p[+
DO ,1 SUB #5 <- #64 k;?E,!{
DO ,1 SUB #6 <- #238 L64cCP*
DO ,1 SUB #7 <- #26 ~TfQuIvQB
DO ,1 SUB #8 <- #248 X3,+aL`
DO ,1 SUB #9 <- #168 j\.\ePmk]
DO ,1 SUB #10 <- #24 sn?YD'>k
DO ,1 SUB #11 <- #16 eFdN"8EW
DO ,1 SUB #12 <- #158 WHvU|rJ
DO ,1 SUB #13 <- #52 (w{C*iB
PLEASE READ OUT ,1 +2S#3m?1
PLEASE GIVE UP (k&r^V/=
w0 0Ba^W
*q |3QHZ
Java
C#4/~+
public class Hello caC(KK#<
{ O\KSPy7YQ
public static void main(String[] args) SHT ^Etri
{ <P4*7:jX
System.out.println("Hello, world!"); f!aE/e\
} LX_{39?<{
} ;(,1pi7|
ZP^7`q)6
I`8jJpGA
JSP <{UjO
<% p$*;>YKO
out.print("Hello, world!"); zaoC
%> Wx-vWWx*Q
wx%TQ!
-C<Ni
MIXAL W^AY:#eX~Q
TERM EQU 19 the MIX console device number \w+a Q?e_
ORIG 1000 start address z^=e3~-J
START OUT MSG(TERM) output data at address MSG y OLqIvN
HLT halt execution BbdJR]N/!h
MSG ALF "MIXAL" a5xmIp@6
ALF " HELL" "ZLujpZcG
ALF "O WOR" +1j+%&).
ALF "LD " #cD20t
END START end of the program fK{[=xMr@
JDy ;Jb
WbP*kV{
Nuva nfbq J
<..直接输出..> &9F(uk=X
Hello, world! T^~9'KDd
:[ AP^
<..或者..> e=%6\&q
`[zd
<. }./_fFN@
// 不带换行
?Ok@1
? "Hello, world!" 5zBayJh#
d$(>=gzBQ
// 或者 ;c;n.o.)/#
5pI=K/-
// 带换行 .A2u7*h&
?? 'Hello, world!' \<R.F
.> 3 @7<e~f
-d8||X[
M?fRiOj
OCaml HAr_z@#E
let main () = }.R].4gT
print_endline "Hello world!";; <7%4=
p~xrl jP$
wuQ>|\Zs
Pascal XgmblNp1
program Hello; bb^$]lT'
begin P.;S6i
n
writeln('Hello, world!'); e;/C}sK:
end. ^3:DeZf!u
|rbl sL2?Z
;y{VdT
Perl :9Vd=M6,
#!/usr/local/bin/perl +e6c4Tw/
print "Hello, world!\n"; ;dh8|ujh
\O7Vo<B&D
}lzQMT
PHP K9J"Q4pEC
<?php
j{;RuNt
print("Hello, world!"); k-LT'>CWl
?> M"t=0[0DM:
yU@~UCmja
^QKL}xiV:
Pike Dxwv\+7]
#!/usr/local/bin/pike 0y3<Ho,+$
int main() ,t]qe
{ <15POB
write("Hello, world!\n"); *KXg;777
return 0; 8uO@S*)0
} M:~/e8Xv
/<s$Am
6!3Jr
PL/I I:qfB2tL)O
Test: procedure options(main); o,sw[
declare My_String char(20) varying initialize('Hello, world!'); T"GuE[?a
put skip list(My_String); >Lo!8Hen
end Test; dWI.t1`i
OZ$"P<X_"
]%y~cq
Prolog z]YP
goal zTa>MzH1-;
write("hello,world!"). 5w#*JK
B~u_zZE
DJ9;{,gm
Python |;-,(509
#!/usr/local/bin/python jbHk
print "Hello, world!" $VrKoL\ScA
P9p{j1*;
`37GVo4
REXX |
3`qT#p{
say "Hello, world!" ?]=fC{Rh
lK?
Z38
#f'(8JjY
Ruby Y"uFlHN&i
#!/usr/bin/ruby $J |oVVct
print "Hello, world!\n" Dk'EKT-
a*pZcv<
%acy%Sy
Scheme @J~y_J{
(display "Hello, world!") G@)I
(newline) NS
l$5E
5g-apod
%}=$HwN)
sed (需要至少一行输入) I~R<}volu
sed -ne '1s/.*/Hello, world!/p' wjmZ`UMz
{1GW,T!#
%;0w2W
Smalltalk .'SXRrn&:C
Transcript show: 'Hello, world!' 3_atv'I
~PNO|]8j
."Yub];H
SNOBOL '^l/e: (H3
OUTPUT = "Hello, world!" I`%=&l[v_5
END ]
%*970
y0qE::/H$
vtFA#})~
SQL oT5xe[{yj
create table MESSAGE (TEXT char(15)); #^Dc:1,
insert into MESSAGE (TEXT) values ('Hello, world!'); SPV'0* Z
select TEXT from MESSAGE; K]bS:[34 R
drop table MESSAGE; 3D~Fu8Hg1
'3o0J\cz
B-[SUmHr
Tcl s\&_Kbw]c
#!/usr/local/bin/tcl Q;P ~'
puts "Hello, world!" &,Q{l$`X
71tMX[x
]tZ5XS
TScript h6x+.}}
? "Hello, world!" 81_3{OrE<
D,eJR(5I
Snt=Hil`
Turing $EJ*x$
put "Hello, world!" |?Q(4(D`*
u,F d[[t
nRQIrUNq
UNIX-style shell .bl0w"c^qq
程序中的/bin/sh可改为您使用的shell }bznx[4?I
L>UYR++<6
#!/bin/sh
A!k}
echo 'Hello, world!' FbM5Bqv
^@L[0Z`
U8-9^}DBA
GUI ~+>M,LfK
wZa;cg.-q
Delphi !BEOeq@2.
program HelloWorld; U>;itHW/
uses ?<frU ,{
Dialogs; VP 4t~$"
begin |->y'V
ShowMessage('Hello, World!'); UKK}$B
end. &SN$D5U'
(P#2Am$
o33{tUp'
Nuva +lha^){
<. l3MbCBX2
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) qd|*vE
.> CES FkAj~
UxicqkX
24N,Bo
3
Visual Basic Dlj=$25
MsgBox "Hello, world!" N/?MsrZw
'或者 ^z&xy41#B
Print "Hello, world!" iL 4SL}P
J+*rjdI
!CBx$1z
Visual FoxPro Mty]LMK
? "Hello, world!" GvzPT2E!
GPx S.&
|>3a9]
X11 x}x@_w
用一个程序 Rg[e~##
>!)VkDAG
xmessage 'Hello, world!'
P)ZSxU
jZ
D\u%
用C++和gtkmm 2 aJ)5 DlfLR
4}LF>_+=
#include <iostream> @B9|{[P
#include <gtkmm/main.h> x>8f#B\Mr
#include <gtkmm/button.h> T (2,iG8
#include <gtkmm/window.h> y]jh*KD[
using namespace std; Mz++SPG7
^Js9E
class HelloWorld : public Gtk::Window c?R.SBr,'
{ _TPo=}Z
public: jATU b-
HelloWorld(); H4:TYh
virtual ~HelloWorld(); DpS6>$v8t
protected: omjLQp[%
Gtk::Button m_button; rFy9K4D
virtual void on_button_clicked(); Na~_=3+a
}; wO!hVm,Ta
Y!7P>?)`,X
HelloWorld::HelloWorld() : m_button("Hello, world!") c&Zm>Qo[
{ g?$9~/h :;
set_border_width(10); }"&(sYQ*`
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); Ro1' L1:
add(m_button);
^,KR 0
m_button.show(); * Yr-:s9J9
} xY'g7<})$
,xh9,EpBk
HelloWorld::~HelloWorld() {} &vF "I'V
\QMSka>
void HelloWorld::on_button_clicked() ?@#}%<yEq
{ Ys_YjlMIbl
cout << "Hello, world!" << endl; Y+j KP*ri
} -mkync3
bp$jD
int main (int argc, char *argv[]) O(~Vvoq
{ Ksp;bfe
Gtk::Main kit(argc, argv); "
}ZD)7K
HelloWorld helloworld; !>:tF,fcB
Gtk::Main::run(helloworld); =5|5j!i=q
} j>b OnCp~
XP` kf]9
v4zd
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Java 5,c`
import java.awt.*; u9gr@06
import java.awt.event.*; m5p~>]}fYF
" /'=gE
public class HelloFrame extends Frame L,D>E
{ /r%+hS
HelloFrame(String title) ~+np7
{ `/AzX *`
super(title); $ vjmW!
O
} 1%@~J\qF
public void paint(Graphics g) tQ~B!j]
{ ~ 9;GD4
super.paint(g); lewDR"0Kx
java.awt.Insets ins = this.getInsets(); 'AAY!{>
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); f5a](&
} Fq9[:
public static void main(String args []) 0hkuBQb\
{ r9Z/y*q
HelloFrame fr = new HelloFrame("Hello"); uf^:3{1
bevT`D
fr.addWindowListener( *[5
new WindowAdapter() Ax0,7,8y
{ h0
Sf=[>z
public void windowClosing(WindowEvent e) *mQit/k.
{ ' mcJ/9)v
System.exit( 0 ); |u{QI3#'
} +mA=%?l
} 4B]61|A
); 6\3k0z
fr.setResizable(true); [KH?5C
fr.setSize(500, 100); DOerSh_0W
fr.setVisible(true); S0+zq<
} upDQNG>d
} u,m-6@il
1955(:I
1,j9(m2
Java Applet QP B"EW
Java Applet用于HTML文件。 ^PQV3\N
<yS"c5D6
HTML代码: hQm4R]a
m=MT`-:
<HTML> BB.TrQM.#
<HEAD> \Wc/kY3&
<TITLE>Hello World</TITLE> >y9o&D