“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。 !c`KzqP
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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》。 TO.71x|
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以下是用不同语言写成的Hello World程序的几个例子: pu(a&0
Ada sp4J%2b
with Ada.Text_Io; use Ada.Text_Io; -e"~UDq`
procedure Hello is yub|
begin +~O0e-d
Put_Line ("Hello, world!"); mC
P*v-
end Hello; $2uZdl8Rvj
_zG9.?'b3
$M F
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汇编语言 )$#]h]ac
HH>"J/;c,
x86 CPU,DOS,TASM cTO\Vhg
MODEL SMALL 8Wn;U!qT
IDEAL ;-=Q6Ms8
STACK 100H vc.:du
lsV9-)yyl
DATASEG lW^bn(_gQ
HW DB 'Hello, world!$' \Kph?l9Ww
)J?Nfi%
CODESEG ~n:dHK`
MOV AX, @data Q:I2\E
MOV DS, AX {shf\pm!o
MOV DX, OFFSET HW 6#S}EaWf
MOV AH, 09H i5 x[1
INT 21H bI)ItC_wf!
MOV AX, 4C00H LRO'o{4$E
INT 21H E|ce[|2
END 60KhwD1
tAfdbt
xtef1 8i>
x86 CPU,GNU/Linux,NASM #}50oWE
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). K1rF;7Y6
;Enter this into "hello.asm" then type: ;=IC.<Q<}
;"nasm -f elf hello.asm" \\80c65-
;"ld hello.o -o hello" jd9GueV*(
;"./hello" -LF0%G
2BLcun
section .data ;data section declaration 7\sJ=*
msg db 'Hello World!',0AH `=A*ei5
len equ $-msg ;string length c+l1#[Dnc
DPuz'e*
section .text ;code section declaration _qg)^M 6
global _start ;entry point (start of execution) *={`
%
_start: mov edx,len ;string length yvxdl=s
mov ecx,msg ;string start x0^O?UR
mov ebx,1 ;file handle: stdout AtRu)v6r
mov eax,4 ;sys_write ZCJOh8
int 80h ;kernel system call 3.q%?S}*
tGGv 2TCEy
mov ebx,0 ;return value 2|vArRKt
mov eax,1 ;sys_exit [h
"*>J{
int 80h ;kernel system call d52l)8
VUXG%511T
Ue:'55
x86 CPU,Windows,MASM32 {R[FwB^7wJ
.386 F|K=].
.model flat,stdcall
rn^7B-V
option casemap:none d,}fp)
;Include 文件定义 q\Cg2[nn2
include windows.inc M_tY: v
include user32.inc Ri]7=.QI`
includelib user32.lib )clSW
include kernel32.inc ;[%_sVIy
includelib kernel32.lib RZm}%6##ZC
;数据段 #s JE{Tb
.data p[BF4h{E
szCaption db 'A MessageBox!',0 3$Ew55
szText db 'Hello,world!',0 "(y",!U@
;代码段 6X(Yv2X&4%
.code 1JIL6w_
start: 8X=cGYC#
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK TRwlUC3hQ
invoke ExitProcess,NULL B .p&,K
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> l6Hu(.Ls;j
end start +g_+JLQ
;D^%)v/i
V5y8VT=I
AWK hC ^|
BEGIN { print "Hello, world!" } 1iq,Gd-G.
_@CY_`a
;Ee!vqD2
BASIC $:M *$r^u
传统版BASIC(例如GWBASIC): Jy)E!{#x
wD|,G!8E2
10 PRINT "Hello, world!"
%"GF+
20 END t0_o.S
rQ|^HNj
或在提示符输入: m,nZrap
_{CMWo"l
?"Hello, world!":END c|<*w[%C
:fI|>I
~
现代版BASIC(例如Quick BASIC): '< ]:su+
7.fpGzUM
Print "Hello, world!" >r%L=22+
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以下的语句在Quick BASIC中同样有效: dR"H,$UH
5Hvg%g-c
? "Hello,world!" :TU;%@7
%M{qr!?uj
Zw+VcZz3
BCPL jR-`ee}y2
GET "LIBHDR" c"BFkw
m(QGP\Ya
LET START () BE :0,q>w
$( lqFDX
d
WRITES ("Hello, world!*N") ;cQhs7m(9
$) cU8Rm\?
}X{#=*$GQ
HRkO.230
Befunge x2p}0N
"!dlrow olleH">v E"!I[
, 7'wt/9
^_@ ~=h M y`Ml
CJ B
(_G&S~@.
Brainfuck [+0rlmB
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< Va^Y3/
+++++++++++++++.>.+++.------.--------.>+.>. 32!jF}qpD
V@gweci
F"2v5F@
C nR)/k,3W
#include <stdio.h> 1e`/N+6u
IC&xL9
int main(void) <p"[jC2zF;
{ /]H6'
printf("Hello, world!\n"); "]M:+mH{]
return 0; _2Sb?]Xn
} 3xS+Pu\)
utIR\e#:B
:V1ttRW}52
C++ #m_3ls}W$
#include <iostream> _t<D~
N
]/N}b
int main() q$)$?"
{ +We_[Re`<
std::cout << "Hello, world!" << std::endl; 0TA{E-A
return 0; DBDHe-1[+
} &YQ
40TS=evG
Pw`26mB
C++/CLI <a/TDW
int main() ,~^0AtLv
{ eELJDSd
BV
System::Console::WriteLine("Hello, world!"); 6*`KC)a
} 6&~8TH
qEvHrsw},
Rh!B4oB4
C# (C Sharp) *?|LE
C
class HelloWorldApp \]Nlka
{ VOc_7q_=
public static void Main() C!KxY/*Px
{ *^j'G^n
System.Console.WriteLine("Hello, world!"); R `}C/'Ty
} 7_Yxz$m
} I&9_F%rX
"YU<CO;4VV
f,Q oA
COBOL "`P/j+-rt
IDENTIFICATION DIVISION. `#O%ZZ+
PROGRAM-ID. HELLO-WORLD. j#^EZ/
O$QtZE61
ENVIRONMENT DIVISION. U5 X\RXy~
lJaR,,
DATA DIVISION. j`JY3RDD
/.1c<!
PROCEDURE DIVISION. Dqss/vwV
DISPLAY "Hello, world!". %@/"BF;r
STOP RUN. sywSvnPuYZ
Hc?8Q\O:
A-5xgp,
Common Lisp /Y=Cg%+
(format t "Hello world!~%") <A{|=2<
!cP2,l'f
^)$(Fe<
DOS批处理 >*jcXao^
@echo off eVL#3|=
echo "Hello, world!" ${(v
Er#}k
-$W#bqvz^
Co|3k:I 8
Eiffel uTsxSkHb/
class HELLO_WORLD s"u6po.'
Z(Styn/x
creation a?Q\nu1
make R*Jnl\?>@
feature K9{3,!1
make is aYTVYg
local `SDpOqfIrP
io:BASIC_IO a]0B{
do bf1Tky=/
!!io ODvlix
io.put_string("%N Hello, world!") U^qQ((ek
end -- make GyU9,>|~T
end -- class HELLO_WORLD XO[S(q
r\#_b4-v3h
ZJL8"(/R
Erlang -Jqm0)2
-module(hello). ckn0I
-export([hello_world/0]). m\9R;$\
yV{&x
hello_world() -> io:fwrite("Hello, World!\n"). 71euRIW'5
Be~__pd
nV/8u_
Forth yT[CC>]l
." Hello, world!" CR Ew`(x30E
Xe ;Eu
;<=Z\NX
Fortran @bPR"j5D
WRITE(*,10) 0r<?Ve
10 FORMAT('Hello, World!') 4:umD*d 3E
STOP hw2'.}B"(
END 6I)[6R
0tA~Y26
b2L9%8h
HTML @#HB6B
<HTML> 8 $5
y]%!
<HEAD> uD'yzR!]+
<TITLE> Hello World! </TITLE> .bdp=vbA
</HEAD> xIt' o(jQH
<BODY> Y-Iu&H+\
<p>Hello World!</p> }kJfTsFS
</BODY> n ~c<[
</HTML> _*&I[%I5
&,v-AL$:Q
E6 g]EE
HQ9+ l=|>9,La
H j-~x==c-;
@=
E~`
E[$"~|7|$
INTERCAL @`Fv}RY{
PLEASE DO ,1 <- #13 g`7C1&U*T
DO ,1 SUB #1 <- #238 BZJ\tPSR
DO ,1 SUB #2 <- #112 B#Q` !B4v
DO ,1 SUB #3 <- #112 I{bDa'rX
DO ,1 SUB #4 <- #0 C~e&J&zh
DO ,1 SUB #5 <- #64 _#\e5bE=Z
DO ,1 SUB #6 <- #238 fyt ODsb>
DO ,1 SUB #7 <- #26 /Pbytu);ds
DO ,1 SUB #8 <- #248 tLH:'"{zx
DO ,1 SUB #9 <- #168 m!22tpb
DO ,1 SUB #10 <- #24 RB\
Hl
DO ,1 SUB #11 <- #16 K#"J8h;x
DO ,1 SUB #12 <- #158 uez"{ _I
DO ,1 SUB #13 <- #52 <v=$A]K
PLEASE READ OUT ,1 vl`Qz"Xy
PLEASE GIVE UP 9f(0
qa
;C^!T
.j
et0w
Java $ol]G`+
public class Hello ?xa70Pb{;
{ eeVDU$*e=
public static void main(String[] args) /gX=79
{ [c^!;YBp)
System.out.println("Hello, world!"); N F$k~r
} hD>]\u
} r5RUgt
7$"A2x
a/\SPXQ/9
JSP )])nd"E
<% jo-2D[Q{
out.print("Hello, world!"); V),wDyi
%> uI9eUO
`e`}dgf0S|
Vjdu9Ez
MIXAL '2S/FOb
TERM EQU 19 the MIX console device number [X9T$7q#
ORIG 1000 start address TdU'L:<4l
START OUT MSG(TERM) output data at address MSG c>|1%}"?
HLT halt execution cp:U@Nh(
MSG ALF "MIXAL" d/8p?Km
ALF " HELL" "|Ke/0rGB
ALF "O WOR" f};RtRo2
ALF "LD " o5@d1A
END START end of the program Z bW!c1s{
bcR";cE
]/9@^D}&
Nuva x/pX?k
<..直接输出..> B_uhNLd
Hello, world! Aaw]=8 OI
~hZr1hT6L
<..或者..> exZgk2[0
2jVvK"C
<. H9\,;kM)
// 不带换行 "u.'JE;j
? "Hello, world!" D_N0j{E
I[6ft_*
// 或者 w4Uo-zr@
K/YXLR +
// 带换行 +C}s"qrb@
?? 'Hello, world!'
UVd
^tg
.> HJi
FlL3
WaPuJ5;e
{X\%7Zef+
OCaml Zg*XbX
let main () = *V`E)maU
print_endline "Hello world!";; ;b5^)S
zv-9z
R?3N><oh*
Pascal c
W1`[b
program Hello; j].=,M<dxE
begin S`Xx('!/|
writeln('Hello, world!'); }Ug O$1
end. A-eRL`
!X5LgMw^ ;
aBd>.]l?
Perl qOTo p-
#!/usr/local/bin/perl j5gL67B
print "Hello, world!\n"; `Hx JE"/
_ea|E 8
wX4gyr
PHP +h)1NX;o1
<?php U]]ON6Y&F
print("Hello, world!"); 0;L.h|R T(
?> 6J]8BHJn+
?$ Dc>
jK]An;l{Z
Pike p[K!.vOt+
#!/usr/local/bin/pike tZ.hSDH
int main() =E$B0^_2RC
{ NY
GWA4L
write("Hello, world!\n"); |})v,
oB
return 0; 7<*,O&![|
} JA$RY
S-[S?&c`
lt("yqBu
PL/I ATWa/"l(H-
Test: procedure options(main); nh]HEG0CZJ
declare My_String char(20) varying initialize('Hello, world!'); eMLcmZJR
put skip list(My_String); &X6hOc:``\
end Test; cX#U_U~d
0iV~MQZ(
[VE>{4]W
Prolog T<%%f.x[s
goal )&$mFwf
write("hello,world!"). wzF%R{;
xnDst9%
6@;sOiN+
Python ,FwJ0V
#!/usr/local/bin/python HF<h-gX
print "Hello, world!" z~th{4#E;
e!ql8wbp
LvCX(yjZ*
REXX v"l8[::
say "Hello, world!" &bigLe
r3+
K8W99:v
Ruby LMNmG]#!
#!/usr/bin/ruby PVSz%"
print "Hello, world!\n" t[ZGY,8
y" |gC!V}
C[,&Y&`j
Scheme Js&.p9S2
(display "Hello, world!") -'
=?Hs.
(newline) *mkVk7]c
WFTwFm6
NpxgF<G
sed (需要至少一行输入) s &f\gp1
sed -ne '1s/.*/Hello, world!/p' w8bvqTQ
r&_e3#]*
E"7[|-`e6
Smalltalk hlfdmh?/
Transcript show: 'Hello, world!' Ab8Ke|fA
CY\D.Eow
Mzw:c#
SNOBOL m86ztP)
OUTPUT = "Hello, world!" F#~*j
END M }$Td_g
K,,'{j2#f
qFI19`?8E
SQL &YBZuq2?
create table MESSAGE (TEXT char(15)); kz G W/
insert into MESSAGE (TEXT) values ('Hello, world!'); |'j,|^<
select TEXT from MESSAGE; \x|8
drop table MESSAGE; Cg8
}^
=f%EjV
?KWo1
Tcl @p@b6iLpO
#!/usr/local/bin/tcl fVJWW):
puts "Hello, world!" - LB} =
A6
Rw LX
/I:&P Pff
TScript YRCOh:W*
? "Hello, world!" RN$>!b/
6m@B.+1
k\r^GB
Turing 5z:#Bl-,L
put "Hello, world!" %a]Imsm
>qPP_^]
j^/=.cD|
UNIX-style shell $EL:Jx2<
程序中的/bin/sh可改为您使用的shell X6BOB?
j_h0hm]
#!/bin/sh MpTOC&NG%s
echo 'Hello, world!' !;K zR&
O
Q$C#:?
Yy;BJ_
GUI &UNQ4-s
K)^8 :nt
Delphi }D-jTZlC
program HelloWorld; '.jYu7
uses dK4w$~j{k
Dialogs; <`?%Cz AO
begin z0%tBgqY(
ShowMessage('Hello, World!'); hVl@7B~
end. vpC?JXz=H
/t*Q"0X5
ZZ
T
9t#~
Nuva ]0g p.R
<. h"[:$~/UJ
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) R:rols"QM
.> @<&u;8y-Cn
o$Y#C{wC%
ErgWs Aw-
Visual Basic s LWVgD
MsgBox "Hello, world!" HA[7)T N1E
'或者 < FY%QB)h
Print "Hello, world!" {vT9I4d8
'dqecmB
W0}FOfL9
Visual FoxPro Rd<K.7&A}
? "Hello, world!" >s )L(DHa"
5hh6;)
LnM$@
X11 ;%k C?Vzi
用一个程序 w"W;PdH)
u\"/EaQ{
xmessage 'Hello, world!' `2]TPaWGh
/}
h"f5
用C++和gtkmm 2 @>8{J6%\
<8YvsJ
#include <iostream> /x4L,UJ= P
#include <gtkmm/main.h> +~= j3U
#include <gtkmm/button.h> 7u
rD
#include <gtkmm/window.h> c&Eva
using namespace std; D;*cy<_K8
c`/=)IO4%
class HelloWorld : public Gtk::Window rHuzGSX54
{
d ^zuo
public: wEN[o18{
HelloWorld(); #N%j9
virtual ~HelloWorld(); 6G}4KGQc
protected: 73nM9
Gtk::Button m_button; `sgW0Uf
virtual void on_button_clicked(); nwzyL`kF
}; 1f'msy/
6 !N2B[9
HelloWorld::HelloWorld() : m_button("Hello, world!") A8o)^T(vJ
{ i g
.
set_border_width(10); Ps<k 2
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); 5X9L h_p
add(m_button); Pa?{}A
m_button.show(); fsWIz1K
} nrX+ '
i r'C(zD=
HelloWorld::~HelloWorld() {} +n$ruoRJh
( uG;Q
void HelloWorld::on_button_clicked() (;H% r &
{ $My~sN8
cout << "Hello, world!" << endl; t*dq*(3"c
} a 7=lZZ?
!6z{~Z:
int main (int argc, char *argv[]) B@#vS=g
{ N1.fV -
Gtk::Main kit(argc, argv); -F 9xPw
HelloWorld helloworld; h0HK~S#xBv
Gtk::Main::run(helloworld); ~|N,{GaL
} `U|zNizO
0cVxP)J+
mIPDF1=)
Java $RunGaX!=N
import java.awt.*; KD\sU6
import java.awt.event.*; \ H#"
a5/Dz&>j6
public class HelloFrame extends Frame =-&h@mB;G
{ l|iOdKr h
HelloFrame(String title) >_ G'o
{ 2E`mbT,v&
super(title); =''b `T$
} {oR@'^N
public void paint(Graphics g) nLC5FA7<
{ c=QN!n:
super.paint(g); -@Urq>^v T
java.awt.Insets ins = this.getInsets(); Qpj[]c5
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); kbJ4CF}H
} B6KG\,'|
public static void main(String args []) YW&`PJ9o
{ }Z t#OA
$
HelloFrame fr = new HelloFrame("Hello"); z-:>[Sn
Hs_7oy|P
fr.addWindowListener( uBn35%
new WindowAdapter() FjLMN{eH/
{ Xr'b{&
public void windowClosing(WindowEvent e) jSRi
{ UX<)hvKj
System.exit( 0 ); pf+VYZ#)
} tkkh<5{C
} r .
(}
); F2ISg'
fr.setResizable(true); z#rp8-HUDS
fr.setSize(500, 100); ;>;it5 l=
fr.setVisible(true); "Nz@jv?
} SU6Aq?`@
} L6;'V5Mg72
wZW\r!Us
~jmI`X/
Java Applet ao[yHcAs
Java Applet用于HTML文件。 g}uSIv^
>"|t*kS
HTML代码: tmM; Z(9t
Y> ATL
<HTML> 3-)}.8F
<HEAD> 8OO[Le]1
<TITLE>Hello World</TITLE>
U0srwt97S
</HEAD> &\Lu}t7Ru
<BODY> ZLPj1L
c@)?V>oe
HelloWorld Program says: &%8IBT
}$r]\v
<APPLET CODE="HelloWorld.class" WIDTH=600 HEIGHT=100> ;:+2.//
</APPLET> n}fV$qu
yy&L&