“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。 5'lVh/
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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》。 ;!yK~OBxt
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以下是用不同语言写成的Hello World程序的几个例子: 2 a<\4w'
Ada 3WV(Ok
with Ada.Text_Io; use Ada.Text_Io; rK~-Wzwu
procedure Hello is *0WVrM06?
begin Tw~R-SiS`s
Put_Line ("Hello, world!"); \BOoY# !a
end Hello; ,|%KlHo^
3CUQQ_
I-v}
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汇编语言 I?KN7(9u?
~W'DEpq_
x86 CPU,DOS,TASM P\7DA4]
MODEL SMALL Z0|5VLk,<{
IDEAL pP\Cwo #,
STACK 100H yUoR6w
~f QrH%@
DATASEG r}U6LE?>
HW DB 'Hello, world!$' C* `WMP*
l,ny=Q$[1'
CODESEG T+8Yd(:hX
MOV AX, @data ,n|si#
MOV DS, AX <y 4(!z"
MOV DX, OFFSET HW `RTxc
MOV AH, 09H jKS j );
INT 21H 5C w(
4.
MOV AX, 4C00H p^l#Wq5
INT 21H uH_KOiF
END dg D-"-O
mY|c7}>V;
sA0Ho6
x86 CPU,GNU/Linux,NASM zI88IM7/
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). !E7gIqo
;Enter this into "hello.asm" then type: xBHf~:!
;"nasm -f elf hello.asm" OM'iJB6=
;"ld hello.o -o hello" 8jK=A2pTa
;"./hello" glAS$<
eSPS3|YYn
section .data ;data section declaration $KcAB0 B8
msg db 'Hello World!',0AH 1N5
E
len equ $-msg ;string length '2,~'Zk
opX07~1
section .text ;code section declaration VO#rJ1J
global _start ;entry point (start of execution) AXw qN:P}
_start: mov edx,len ;string length g 2Fg
mov ecx,msg ;string start s5,@=(,
mov ebx,1 ;file handle: stdout 8)B{x[?|
mov eax,4 ;sys_write Za.}bR6?Y
int 80h ;kernel system call [d`Jw/4n
YSjc=
mov ebx,0 ;return value {R$`YWk
mov eax,1 ;sys_exit =dm9+ff
int 80h ;kernel system call =fSTncq
o)Q4+njT@
N$=YL
@m8
x86 CPU,Windows,MASM32 ,@Csa#
.386 1eXMMZ/?
.model flat,stdcall 3=S|U,
option casemap:none 8X;?fjl`"
;Include 文件定义 !~^2Mu(X
include windows.inc bLT3:q#s
include user32.inc N2h5@*1Y
includelib user32.lib "|\hTRQ
include kernel32.inc 4^(x)r
&(?
includelib kernel32.lib e9acI>^w
;数据段 a )O"PA}2
.data as07~Xvp-
szCaption db 'A MessageBox!',0 (lsG4&\0F
szText db 'Hello,world!',0 b+s'B4@rb
;代码段 ui]iOp
.code q NGR6i
start: %Z;RY5
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK T!
}G51
invoke ExitProcess,NULL L5hF-Ek!
3
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> z$<=8ox8e
end start A;!5c;ftj,
#rHMf%0
OPvPP>0*8
AWK @`.4"*@M
BEGIN { print "Hello, world!" } 0+&WIs
&_)P)L
UG vIH m
BASIC k?cX fj&
传统版BASIC(例如GWBASIC): o!xCM:+J
}0~$^J
10 PRINT "Hello, world!" /fQcrd7h
20 END lyL6w1
6O4*OR<&
或在提示符输入: iBE|6+g~Cj
a$W
O}g?
?"Hello, world!":END AFt- V
gD$&OkH
现代版BASIC(例如Quick BASIC): osc8;B/
8%4;'[UV
Print "Hello, world!" Y58H.P
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以下的语句在Quick BASIC中同样有效: e.\>GwM
m?-)SA
? "Hello,world!" w+m7jn!$
Yjg$o:M
3P_.SF
BCPL %/eG{oh-
GET "LIBHDR" p5In9s
yf{\^^ i(
LET START () BE Uahh|>s
$( su0K#*P&I
WRITES ("Hello, world!*N") \:'GAByy
$) "t2T*'j{
zkt~[-jm}
hl]d99Lc
Befunge k(f),_
"!dlrow olleH">v 1P]J3o
, HSud$(w
^_@ Eu|/pH=:
fMwF|;
lB}?ey
Brainfuck s.(.OXD&
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<
,]wab6sY
+++++++++++++++.>.+++.------.--------.>+.>. W *0!Z:?
tFcQ.1
( w4XqVT
C d 6Y9D=O
#include <stdio.h> ['QhC( {
$y;w@^
int main(void) eg~
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{ |A4B4/!
printf("Hello, world!\n"); t{,$?}
return 0; 2NFk#_9e~
} U["<f`z4\
%g*nd#wG
K-YxZAf
C++ 9#H0|zL
#include <iostream> E[hSL#0
/A5=L<T6F
int main() }51QUFhL0
{ ^uo,LTq+
std::cout << "Hello, world!" << std::endl; padV|hF3(e
return 0; YBY;$&9
} 6cg,L:j#
fq1w <e
6l|L/Z_6
C++/CLI ?23J(;)s
int main() X6sZwb
{ -0uGzd+m*
System::Console::WriteLine("Hello, world!"); M5[#YG'FlQ
}
||2%N/?
uWGp>;m eO
Sw$&E
C# (C Sharp) )fXxkOd
class HelloWorldApp 5hqXMs
{ ko.%@Y(=
public static void Main() `B?+1Gv
{ ]V fp,"op
System.Console.WriteLine("Hello, world!"); :~ s"]*y
} Bl)D/
} 6n:X
p_yO
7<kr|-
w2$ L;q
COBOL x~l"'qsK
IDENTIFICATION DIVISION. gISA13
PROGRAM-ID. HELLO-WORLD. Pf8_6 z_
[:,|g;=Y}
ENVIRONMENT DIVISION. ~+6#4<M.~
C&q}&=3r
DATA DIVISION. HH*,Oe
'Q'-7z-6
PROCEDURE DIVISION. yR F+
DISPLAY "Hello, world!". I9TNUZq('
STOP RUN. n n[idw
0o6r3xc;
.K940& Ui
Common Lisp )p!")
:'fv
(format t "Hello world!~%") "6e3Mj\
1>_$O|dE
zBrIhL]95
DOS批处理 NgGpLdaC2v
@echo off 7F~Jz*,B*W
echo "Hello, world!" vr>J$(F
9~,!+#
GNG.N)q#C
Eiffel Jx3a7CpX
class HELLO_WORLD 7DW-brd
)W @
creation 4P2p|Gc3
make ),<h6$
feature nP=/XiCj
make is a$"Z\F:x
local 4/o9K*M+
io:BASIC_IO /|Gz<nSc
do &=8ZGjR< }
!!io \ }-v
io.put_string("%N Hello, world!") yYC\a7Al4
end -- make DL_M#c`<
end -- class HELLO_WORLD wMH13i3
qztL M?iV
L8;`*H
Erlang EU5(s*A
-module(hello). $YBH;^#
-export([hello_world/0]). BZQJ@lk5
c1]\.s
hello_world() -> io:fwrite("Hello, World!\n"). a`||ePb|W~
y9:o];/
fQU_A
Forth a.<!>o<t:
." Hello, world!" CR @S012} xH
?!34qh
E;a9RV|
Fortran Mf:x9#
WRITE(*,10) F fzY3r+
10 FORMAT('Hello, World!') 5OFb9YX
STOP KbRKPA`
END WtSlD9 h
[yAR%]i-7
{*|$@%y!
HTML Z=?qf$.}
<HTML> ~m'8BK
<HEAD> 3~0Xe
<TITLE> Hello World! </TITLE> Bsz;GnD|r
</HEAD> T /7[hj
<BODY> 7`X9s~B
<p>Hello World!</p> 2LN5}[12]
</BODY> k.0pPl
</HTML> !P)7t`X
k|^nrjStC
`^E(P1oJ3
HQ9+ 5.)/gK2$
H )\0c2_w>
j%&^qD,
iQaF R@
INTERCAL In4T`c?kQ
PLEASE DO ,1 <- #13 "_&HM4%!
DO ,1 SUB #1 <- #238 i
`8Y/$aT
DO ,1 SUB #2 <- #112 A7:W0Gg
DO ,1 SUB #3 <- #112 hmd, g>J:<
DO ,1 SUB #4 <- #0 ~R
W 6;
DO ,1 SUB #5 <- #64 X"G3lG
DO ,1 SUB #6 <- #238 t#J
#DyY5
DO ,1 SUB #7 <- #26 p&\x*~6u
DO ,1 SUB #8 <- #248 `!T6#6h
DO ,1 SUB #9 <- #168 785Y*.p
DO ,1 SUB #10 <- #24 2|^bDg;W+u
DO ,1 SUB #11 <- #16 HaamLu
DO ,1 SUB #12 <- #158 65A>p:OO
DO ,1 SUB #13 <- #52 QO~TuC
PLEASE READ OUT ,1 z//6yr
PLEASE GIVE UP P(r}<SM
3?(||h{
`S7${0e
Java ?+#E&F
public class Hello >7V&pH'
{ M*c`@\
public static void main(String[] args) CD0SXNi"zH
{ .!t'&eV
System.out.println("Hello, world!"); k4-C*Gx$h
} ZjJEjw
} T+/Gz'
Wm ?RB0
BPKeG0F7
JSP :U;ZBs3
<% }FRyG%
out.print("Hello, world!"); iyhB;s5Rgw
%> J`3pXc$.
3' 6>zp
#/1,Cv yj
MIXAL pr-!otz
TERM EQU 19 the MIX console device number |5,q54d(K
ORIG 1000 start address ,G,T&W
START OUT MSG(TERM) output data at address MSG CLD*\)QD\
HLT halt execution HgX4RSU
MSG ALF "MIXAL" yHoj:f$$x
ALF " HELL" Hw/1~O$T
ALF "O WOR" oZ~M`yOz.
ALF "LD " ^\\cGJ&8c
END START end of the program -OuMC&
[XQoag;!
ODM<$Yo:d
Nuva .,x08M
<..直接输出..> TM':G9n
Hello, world! ]Ikj Z=
mvxg|<
<..或者..> Z;i^h,j?$1
UeT"v?zP
<. fD|ox
// 不带换行 zUxF"g-W
? "Hello, world!" r jL%M';
U07n7`2w
// 或者 Nr7MSFiL
p<6pmW3
// 带换行 15gI-Qb
?? 'Hello, world!' JWrvAM$O
.> rq6(^I
p2y
h
gzHjD-g-<
OCaml c Ew/F0
let main () = {N;XjV1x
print_endline "Hello world!";; Rm *"SG
`h
Y:F(
U]ouBG8/
Pascal bd<zn*HZ*
program Hello; obX|8hTL%
begin KFC zf_P!
writeln('Hello, world!'); ^QV;[ha,o
end. W?/7PVGv5h
K)0 6][,
s6). ?oE
Perl \"PlM!0du
#!/usr/local/bin/perl ;mo}$^49*
print "Hello, world!\n"; 2&!G@5
!cE)LG
Ar=pzQ<Z{
PHP T cSj`-
<?php -D.6@@%Kc}
print("Hello, world!"); JT<Ia
?> >1mCjP
TiF$',WMv
}kXF*cVg
Pike J/wot,j^
#!/usr/local/bin/pike JVTG3:zD
int main() ;Z.}~d6>!
{ F+L q
write("Hello, world!\n"); g >-iBxml
return 0; K#F~$k|1B
} z6FG^
o~^hsm[44J
D@4hQC\
PL/I A"z')
Test: procedure options(main); P RX:*0
declare My_String char(20) varying initialize('Hello, world!'); <6n(a)L1
put skip list(My_String); C2eei're
end Test; \&AmX8" [
6z=:x+m
iQin|$F_O
Prolog wTIOCj
goal ";",r^vr\
write("hello,world!"). Fz)z&WT
~"}-cl,
{v]A`u)
Python rmR7^Ycv/
#!/usr/local/bin/python a50{ gb#
print "Hello, world!" =`vUWONn
&sWq SS
Fv5@-&y$W
REXX XF{}St~ (
say "Hello, world!" 31YzTbl[H
le|e 4f*+
d%4!d_I<
Ruby 6]Ppa ~Xwq
#!/usr/bin/ruby tq>QZEg
print "Hello, world!\n" M*+_E8Lh
m[ txKj.=_
nKkI
Scheme #xE"];
(display "Hello, world!") Y@^MU->+
(newline) "o}3i!2Qr
> -Jd@7-
tX Z5oG7
sed (需要至少一行输入) $N5}N\C:a
sed -ne '1s/.*/Hello, world!/p' V!3O
1
01#a
=?T'@C
Smalltalk {Sd{|R_
Transcript show: 'Hello, world!' [Fr.ik
X )g<F
M_UhFY='
SNOBOL 9)T;.O
OUTPUT = "Hello, world!" hMeE@Q0
END =JNoC01D
qV^,muyoG
0 Co_,"
SQL WQ =C5^u
create table MESSAGE (TEXT char(15)); _i6G)u&N
insert into MESSAGE (TEXT) values ('Hello, world!'); #$X_,P|D
select TEXT from MESSAGE; |ay W _5}
drop table MESSAGE; F
~
/{1Q*
e [3sWv
+:wOzTUN
Tcl =f{V<i~q
#!/usr/local/bin/tcl f(7/
puts "Hello, world!" !}Cd_tj6
t#}/VnSQ
}N*6xr*X+
TScript <+" Jh_N#
? "Hello, world!" 4wMKl6mL
+'hcFZn(T
p@NE^aMn
Turing qS|bpC0x
put "Hello, world!" *#+XfOtF
|AuN5|obI
Nx;U]O6A
UNIX-style shell ?7/n s>}
程序中的/bin/sh可改为您使用的shell 2\lUaC#E
.z7F58
#!/bin/sh >j_,3{eJ
echo 'Hello, world!' TR5"K{WDx
mn?<
Zz
M8:gHjwsx
GUI 5A Vo#}&\
^zO%O653
Delphi Pfe&wA't
program HelloWorld; NHPpHY3^.
uses u==bLl=$
Dialogs; ;:hyW,J
begin +JB. EW/
ShowMessage('Hello, World!'); 2YdMsu~
end. <IGnWAWn
/Rb`^n#
?o"wyF A*
Nuva 2Do^N5y
<. sr
sDnf
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) a(NN%'fDD
.> ;Pnz4Y4|eU
[l:3F<M
~:D}L
Visual Basic }aRV)F
MsgBox "Hello, world!" mH}/QfUlq
'或者 mfIY7DP
Print "Hello, world!" Nf%jLK~
$A9!} `V
q!$?G]-%
Visual FoxPro lnEc5J@c>i
? "Hello, world!" c&e?_@}|
W0K&mBu
\vs,$h
X11 DAj@wn3K?
用一个程序 <:W]u T
\RnGKQ"4
xmessage 'Hello, world!' Jb#*QJ=
(?72 vCc
用C++和gtkmm 2 sT?Qlj'Zd
t IdH?x
#include <iostream> &$.Vi&{.
#include <gtkmm/main.h> -P]J:7*0?\
#include <gtkmm/button.h> /x"gpKwsB
#include <gtkmm/window.h> jX$TiG
using namespace std; \_#0Z+pX
)**k3u
t4
class HelloWorld : public Gtk::Window 72GXgah
{ :CV!:sUm
public: 7v}4 Pl,$4
HelloWorld(); 2fT't"gw
virtual ~HelloWorld(); 2^Tj7@
protected: &n|#jo(gS
Gtk::Button m_button; h6c8hp.
virtual void on_button_clicked(); ?C(Z\"IX
}; Ro*$7j0!Hf
4tz8^z[Kw
HelloWorld::HelloWorld() : m_button("Hello, world!") Uq 2Uv
{ Oj:O-PtN2
set_border_width(10); !u.{<51b
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); y@ J\h8_
add(m_button); ?D/r1%Z
m_button.show();
Ash"D~
} p#HPWW"
xG
7;Ps4L
HelloWorld::~HelloWorld() {} m0t5oO
#m1e_[
void HelloWorld::on_button_clicked() [Qa0uM#SU
{ s[)2z3
cout << "Hello, world!" << endl; dGAthbWJ
} !!E_WDZ#9
xojy[c#
int main (int argc, char *argv[]) ez%RWck
{ CsS0(n(x
Gtk::Main kit(argc, argv); Z`v6DfK}
HelloWorld helloworld; { dhuvB
Gtk::Main::run(helloworld); %?J\P@
} 6C9KT;6
Z%\9y]zs
dt{|bQLu3
Java <~!7? ak
import java.awt.*; Pk T&zSQA
import java.awt.event.*; Ne,7[k
i)Vqvb0Q
public class HelloFrame extends Frame b{)9?%_
{ Hq8<g$
HelloFrame(String title) J\b,rOI f
{ \/$T 3f`x
super(title); ptQr8[FA
} =\e}fyuK
public void paint(Graphics g) 2w)0>Y(_
{ }P#%aE&-
super.paint(g); Mcj4GjV6:"
java.awt.Insets ins = this.getInsets(); b[$%Wg
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); wxB?}
} {g@Wd2-J}
public static void main(String args []) $]:I1I
{ k$y(H;XA
HelloFrame fr = new HelloFrame("Hello"); [4]lAxrRF
d{0b*l%
fr.addWindowListener( Kg=TPNf"$
new WindowAdapter() DKm`
{ 9Gfm?.O5
public void windowClosing(WindowEvent e) s@OCj0'l
{ X ~%I(?OX
System.exit( 0 ); @y[Zr6\z
} aDb@u3X@
} -`n>q^A7e
); quN7'5ZC[
fr.setResizable(true); Ij(S"P@
fr.setSize(500, 100); p<?~~7V
fr.setVisible(true); 4,tMaQ
} d%Jl9!u
} \O/" F;
q<o*rcwf^
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Java Applet 5s8S;Pb]<