“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。 O5vfcX4>
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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》。 i
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以下是用不同语言写成的Hello World程序的几个例子: )W 5g-@
Ada [n| }>
with Ada.Text_Io; use Ada.Text_Io; iB(?}SaAZ
procedure Hello is z^`4n_(Ygu
begin e-P{)L<s5
Put_Line ("Hello, world!"); &! h~UZ
end Hello; esA^-$
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汇编语言 ;Us6:}s
SQ> Yf\
x86 CPU,DOS,TASM Bo8f52|
MODEL SMALL Z(tJd,
IDEAL :*,!gf
STACK 100H ^|.T\
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DATASEG }wn|2K'
HW DB 'Hello, world!$' 0@b<?Ms9
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CODESEG 1}|y^oB\-
MOV AX, @data @xBb|/I
MOV DS, AX 5JVBDA^#om
MOV DX, OFFSET HW 2= ;ZJ
MOV AH, 09H hz;SDaBA
INT 21H
dnC"`
MOV AX, 4C00H iUh7eR9
INT 21H cJq{;~
END eWm'eO
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x86 CPU,GNU/Linux,NASM n8!|}J
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). cwaR#-#
;Enter this into "hello.asm" then type:
~m=Z>4M
;"nasm -f elf hello.asm" 6Zw$F3 <
;"ld hello.o -o hello" u;^H =7R
;"./hello" [= E=H*j
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section .data ;data section declaration HI D6h!
msg db 'Hello World!',0AH 8q9^
len equ $-msg ;string length w/o8R3F
V4"o.G3\o
section .text ;code section declaration lmoYQFkYP
global _start ;entry point (start of execution) 9mMQ
_start: mov edx,len ;string length nY1PRX\
mov ecx,msg ;string start %)}y[
(
mov ebx,1 ;file handle: stdout c.Do b?5
mov eax,4 ;sys_write 3.V-r59
int 80h ;kernel system call 2@?\"kR"!
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mov ebx,0 ;return value "a]Ff&T-
mov eax,1 ;sys_exit 1J[|Ow
int 80h ;kernel system call TU O*w
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qAirH1#
x86 CPU,Windows,MASM32 a{4RG(I_
.386 y R_x:,|g
.model flat,stdcall 95^-ptO{1`
option casemap:none (a@}J.lL
;Include 文件定义 F:cenIaBF
include windows.inc (6~~e$j
include user32.inc $|H7fn(r
includelib user32.lib L<O"36R
include kernel32.inc EM0]"s@Lf
includelib kernel32.lib BLcsIyq
;数据段 T)#eaz$4W
.data )jm u*D5N
szCaption db 'A MessageBox!',0 9p%8VDF=
szText db 'Hello,world!',0 Pskg68W
;代码段 H<C+rAIb
.code g/jlG%kI}
start: '/Ag3R
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ~/1eF7
invoke ExitProcess,NULL Fa9gr/.F,@
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |<w
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end start 4<l&cP
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AWK '`/w%OEVC5
BEGIN { print "Hello, world!" } U
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BASIC cP&XkAQ
传统版BASIC(例如GWBASIC): {,
zg
;&U! g&
10 PRINT "Hello, world!" 1`l10f qU
20 END QP1bm]QYA
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或在提示符输入: 1xt N3{c
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?"Hello, world!":END ^laf!kIP
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现代版BASIC(例如Quick BASIC): UWW_[dJr
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Print "Hello, world!" 0Lki(
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以下的语句在Quick BASIC中同样有效: B4ky%gF4
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? "Hello,world!" M,/{ 53
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BCPL b8TwV_&|X
GET "LIBHDR" 5$Aiez~tBq
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LET START () BE DTp|he
$( 6n5>{X
WRITES ("Hello, world!*N") HA::(cXL
$) HT6+OK(~dJ
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Befunge ,?ci+M)
"!dlrow olleH">v z{ydP Ra
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^_@ /8tF7Mmr
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;,Q6AS!
Brainfuck /;\{zA$uC=
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< YMTB4|{
+++++++++++++++.>.+++.------.--------.>+.>. { 0vHgi
6d#
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C 1pHt3Vc(G
#include <stdio.h> >5+]~[S
s^Wh!:>r/
int main(void) ~<&47'D
{ ye-R
printf("Hello, world!\n"); _Vf0MU;3f+
return 0; bRb+3au_x
} ~f:jI1(}
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C++ a>/cVu'kz
#include <iostream> GUqhm$6a
DV">9{"5']
int main() a54qv^IS
{ 5Sfz0
std::cout << "Hello, world!" << std::endl; KD)+&69
return 0; N0 F|r8xS
} !JE=QG"
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C++/CLI QwL'5ws{q
int main() sU}.2k
{ FsyM{LT
System::Console::WriteLine("Hello, world!"); /vG)n9Rc
} ^J_rb;m43
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C# (C Sharp) j,BiWgj$8
class HelloWorldApp !;ipLC;e}
{ "8|a4Y+F
public static void Main() P-~kxb9aa
{ Lm}J&^>
System.Console.WriteLine("Hello, world!"); eFiUB
} &@anv.D
} G,6Zy-Y9
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COBOL 7TW</g(
IDENTIFICATION DIVISION. 3(/J(8
PROGRAM-ID. HELLO-WORLD. Hjtn*^fo^
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ENVIRONMENT DIVISION. @3@oaa/v
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DATA DIVISION. 95%,
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PROCEDURE DIVISION. Im* ~6[
DISPLAY "Hello, world!". Zg#VZg1
2
STOP RUN. h72#AN
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Common Lisp *>,CG:`D
(format t "Hello world!~%") V<+=t{
j~a"z4 0
6YCFSvA#/
DOS批处理 k-uwK-B}v+
@echo off g)@d(EYY
echo "Hello, world!" QIg.r\>o
;}BDEBl
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Eiffel O5:2B\B
class HELLO_WORLD 2UF
,W]
}j. [h;C6
creation 6HyndB^
make ">pt,QV
feature '"/Yk=EmlU
make is XW*,Lo5>H\
local @\|W#,~
io:BASIC_IO A?DgeSm
do cmzu
@zq
!!io tA?cHDp4E
io.put_string("%N Hello, world!") ,+u.FQv~
end -- make DA/l`Pn
end -- class HELLO_WORLD /-#1ys#F=
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Erlang CDy *8<-&
-module(hello). an4^(SY
-export([hello_world/0]). ,~R`@5+
>t[beRcR6
hello_world() -> io:fwrite("Hello, World!\n"). eb])=
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Y:~A-_
Forth l1_Tr2A}7/
." Hello, world!" CR UN~dzA~V
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cB;:}Q08#
Fortran 4@K9%
WRITE(*,10) 6I$laHx?
10 FORMAT('Hello, World!') LP{{PT.&X
STOP aUdbN&G
END \(nb
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HTML *H"IW0I
<HTML> gaK m`#
<HEAD> @>wD`<U|
<TITLE> Hello World! </TITLE> B? Vr9H 7n
</HEAD> 3'd(=hJ45$
<BODY> |Ef\B]Ns
<p>Hello World!</p> n21Pfig
</BODY> s`j QX\{
</HTML> 4(VVEe
x[mxp/
/P
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HQ9+ ;XJK*QDN
H r'kUU]j9
cTA8F"UGD
n{>Ge,enP0
INTERCAL D 8nt%vy
PLEASE DO ,1 <- #13 -_m>C2$6x
DO ,1 SUB #1 <- #238 p.r \|
DO ,1 SUB #2 <- #112 thoAEG80
DO ,1 SUB #3 <- #112 ")/TbTVu
DO ,1 SUB #4 <- #0 hX-([o
DO ,1 SUB #5 <- #64 vv2N;/;I
DO ,1 SUB #6 <- #238 y_^w|
DO ,1 SUB #7 <- #26 0_}^IiG
DO ,1 SUB #8 <- #248 wq[\Fb`
DO ,1 SUB #9 <- #168 [0_JS 2KE
DO ,1 SUB #10 <- #24 `EV"
/&`
DO ,1 SUB #11 <- #16 a@|/D\C
DO ,1 SUB #12 <- #158 C~do*rnM^
DO ,1 SUB #13 <- #52 [DW}z
PLEASE READ OUT ,1 M18H1e@Al
PLEASE GIVE UP s6#@S4^=\
zW`Zmt\T2
U($sH9,
Java hK!Z~
public class Hello 4?#0fK
{ c0J=gZiP
public static void main(String[] args) %X)i-^T
{ ~s}0z&v^te
System.out.println("Hello, world!"); b-/zt Z@u
} A)5-w`1
} 3Y\7+975m
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s m42
JSP #q;hX;Va
<% wzw`9^B
out.print("Hello, world!"); 64Ot`=A"
%> lpW|GFG
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rsbdDTy
MIXAL i|'M'^3r
TERM EQU 19 the MIX console device number :<-,[(@bR
ORIG 1000 start address (nhv#&Fd+
START OUT MSG(TERM) output data at address MSG br!:g]Vh
HLT halt execution tMN^"sjf*
MSG ALF "MIXAL" o8 A]vaa
ALF " HELL" oDyrf"dl
ALF "O WOR" 89I[Dg;"u
ALF "LD " sZ,MN F8i
END START end of the program OSQt:58K
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Nuva "J0,SFu:
<..直接输出..> 8\Y/?$on
Hello, world! _Qy3A T~
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<..或者..> e*O-LI2O
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<. -Yaw>$nJ
// 不带换行 ],*^wQ
? "Hello, world!" 0>
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// 或者 Oeo:V"
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// 带换行 Nw'3gJ:
?? 'Hello, world!' ILt95l
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p100dJvq
OCaml oE+s8Q
let main () = WZk\mSNV
print_endline "Hello world!";; @=[/bG
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LGN,8v<W(
Pascal W)"PYC4
program Hello; |>(@n{
begin <!.'"*2
writeln('Hello, world!'); iST r;>A
end. 3F,$}r#
#C?T
%Z-^Bu8;y
Perl -GkNA"2M[
#!/usr/local/bin/perl 7@g8nv(p
print "Hello, world!\n"; ^/K\a
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M.K-)r,
PHP jB]tq2i
<?php ?3!"js
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print("Hello, world!"); X{rw+!
?> `d#l o
\H$Ps9Xh
F_ ~L&jHP
Pike ?2VY^7N[
#!/usr/local/bin/pike U^4
/rbQ
int main() @;}bBHQz{p
{ LTu
c s}
write("Hello, world!\n"); P&3'N~k-
return 0; %iWup:
} dzZ74FE!t
0$3\DS<E
[B9'/:
PL/I f[3DKA
Test: procedure options(main); G l+[|?N
declare My_String char(20) varying initialize('Hello, world!'); ^4^1)' %
put skip list(My_String); 4C^;lK
end Test; 4 vwa/?
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P0J3ci}^
Prolog n(.y_NEgV!
goal 7N "$~UfC
write("hello,world!"). 5uMh#dm^
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5T;M,w6DV
Python JqTkNKi/s
#!/usr/local/bin/python ZSq7>}
print "Hello, world!" Z]l<,m
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~vnG^y>%
REXX UKp- *YukT
say "Hello, world!" W
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!YL|R[nDH|
3DnlXH(h1
Ruby ";38vjIV
#!/usr/bin/ruby yiGq?WA7
print "Hello, world!\n" 9ctvy?53H
w#eD5y~'oo
2yR*<yj
Scheme \]}|m<R
(display "Hello, world!") /]_T
(newline) a'f"Zdh%w
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-4`Wkkhu
sed (需要至少一行输入) emOd<C1A
sed -ne '1s/.*/Hello, world!/p' wXp
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BL<.u
Xu`c_
Smalltalk I&]d6,
Transcript show: 'Hello, world!' =8$//$
L ^} Z:I
b{<qt})
SNOBOL NR-d|`P;
OUTPUT = "Hello, world!" G\G TS}u[
END zF6R\w
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SQL LnIln[g:
create table MESSAGE (TEXT char(15)); u
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insert into MESSAGE (TEXT) values ('Hello, world!'); aAZS^S4v
select TEXT from MESSAGE; 0xrr9X<
drop table MESSAGE; )orVI5ti
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Tcl ^;jJVYx-PP
#!/usr/local/bin/tcl qd#?8
puts "Hello, world!" :;W[@DeO[
hc
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TScript .?R~!K{`
? "Hello, world!" u~n*P``{
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M#X8Rs1`
Turing >)*'w!
put "Hello, world!" stuj,8
n%zW6}
r/zuo6"5
UNIX-style shell /a.4atb0
程序中的/bin/sh可改为您使用的shell zaW y7@?
li'h&!|]
#!/bin/sh aX`"V/
echo 'Hello, world!' FJ0Ity4u6
r09gB#K4
]j> W9n?
GUI t80s(e
!/]F.0
Delphi n^aSio6
program HelloWorld; 2%|
uses `roos<F1D
Dialogs; ZoX24C'
begin mdjPKrF<
ShowMessage('Hello, World!'); {gh41G;n
end. e RY2.!
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ldp
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System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) 58xaVOhb
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Visual Basic /`(Kbwh
MsgBox "Hello, world!" 8vQGpIa,
'或者 @1+C*
Print "Hello, world!" )Z6bMAb0'N
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Visual FoxPro =5:L#` .
? "Hello, world!" $t*>A+J
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Bmx+QO
X11 Mdk(FG(
用一个程序 )ph**g
1.S7MSpTV
xmessage 'Hello, world!' U-RR>j
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用C++和gtkmm 2 R7)\wP*l5
Ah^0FU%!g
#include <iostream> RF3?q6j ,
#include <gtkmm/main.h> 5L ]TV\\
#include <gtkmm/button.h> 2MT_5j5[N
#include <gtkmm/window.h> H~Z$ pk%
using namespace std; /zt9;^e
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class HelloWorld : public Gtk::Window :LE0_ .
{ 'u9,L FO
public: 6yDj1PI
HelloWorld(); #+VH]7]
virtual ~HelloWorld(); TtZZjeg+V
protected: 1Yr&E_5/
Gtk::Button m_button; V[9#+l~#
virtual void on_button_clicked(); 7JC^+rk
}; 1zo0/<dk
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HelloWorld::HelloWorld() : m_button("Hello, world!") T6/d[SH>
{ M.DU^-7
set_border_width(10); O$dcy!
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); 7CKpt.Sz6
add(m_button); Tbf@qid e
m_button.show(); ]lBe
} r'TxYM-R
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HelloWorld::~HelloWorld() {} )7X+T'?%
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void HelloWorld::on_button_clicked() -|1H-[Y(
{ {J aulg
cout << "Hello, world!" << endl; 4[\$3t.L
} JpI(Vcd
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int main (int argc, char *argv[]) YwbRzY-#F
{ B~%'YQk
Gtk::Main kit(argc, argv); m=saUhI*9
HelloWorld helloworld; trl:\m
Gtk::Main::run(helloworld); $q"/q*ys
} \>B$x@-wg
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Java G<F+/Oi&DX
import java.awt.*; 7g* "AEk
import java.awt.event.*; |E&
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public class HelloFrame extends Frame 9+z5$
{ asT/hsSNS
HelloFrame(String title) {S9't;%]
{ >e
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super(title); i8h(b2odQ
} 3 s @6pI
public void paint(Graphics g) LnwI 7uvq
{ @yGK$<R
super.paint(g); cWNZ +Q8Y
java.awt.Insets ins = this.getInsets(); #
g.drawString("Hello, World!", ins.left + 25, ins.top + 25);
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} "7> o"FQ
public static void main(String args []) .C6wsmQ
{ !!{!T;)l
HelloFrame fr = new HelloFrame("Hello"); P#8+GN+bF
'7Ad:em
fr.addWindowListener( /Zzb7bHLK
new WindowAdapter() x4_xl
.
{ Mu1H*;_8
public void windowClosing(WindowEvent e) \Zn%r&(
{ )s#NQ.T[
System.exit( 0 ); \zdY$3z
}
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} H3}eFl=i2
); D2,2Yy5y
fr.setResizable(true); =do*(
fr.setSize(500, 100); 4 !q4WQ ;
fr.setVisible(true); }L!%^siG_
} Tz`O+fx&
} (TX\vI&
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Java Applet tx+KxOt9Y
Java Applet用于HTML文件。 5PcN$r"P
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