“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。 L~3Pm%{@A
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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》。 /-s6<e!
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以下是用不同语言写成的Hello World程序的几个例子: i.#:zU%o
Ada `]aeI'[}R
with Ada.Text_Io; use Ada.Text_Io; t{>q|0
procedure Hello is wd6owr
begin wL[
M:
Put_Line ("Hello, world!"); 9+N-eW_U
end Hello; HaYo!.(Fv
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)/P}?`I
汇编语言 Bw
yx c
Y);=TM6s
x86 CPU,DOS,TASM Hr C+Yjp
MODEL SMALL Vvo7C!$z
IDEAL i30!}}N8
STACK 100H Xa&kIq}(g
rl.}%Ny
DATASEG VEH>]-0K
HW DB 'Hello, world!$' A}!J$V:w]
vQ.R{!",>
CODESEG 2<6UwF
MOV AX, @data E-FUlOG&
MOV DS, AX Gm`8q}<I
MOV DX, OFFSET HW l-3~K-k<@
MOV AH, 09H xD 7]C|8o
INT 21H +T+#q@
MOV AX, 4C00H OTv)
INT 21H JGZBL{8
END r_d!ikOT(
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n{jGOfc
x86 CPU,GNU/Linux,NASM /_.|E]
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). &&%H%9
;Enter this into "hello.asm" then type: YkADk9fE
;"nasm -f elf hello.asm" }0 ?3:A
;"ld hello.o -o hello" o;*Q}Gr<M
;"./hello" >GuM]qn
ykJ>*z
section .data ;data section declaration +,l-Nz
msg db 'Hello World!',0AH -RLOD\ZBh
len equ $-msg ;string length HKe K<V
ig"L\ C"T
section .text ;code section declaration ,)io5nZF
global _start ;entry point (start of execution) d_CT$
_start: mov edx,len ;string length d 'ifLQ\
mov ecx,msg ;string start R-14=|7a-
mov ebx,1 ;file handle: stdout &j6erwaT
mov eax,4 ;sys_write /V By^ L:
int 80h ;kernel system call 1mJHued=6
4!$"ayGv;D
mov ebx,0 ;return value <naz+QK'
mov eax,1 ;sys_exit yQrD9*t&g
int 80h ;kernel system call P
{'b:C
V6Dbd"
i9
ULW~90
x86 CPU,Windows,MASM32 31)&vf[[
.386 JS77M-Ac
.model flat,stdcall Wl4%GB
option casemap:none h];I{crh
;Include 文件定义
8Y?;x}
include windows.inc a{e4it
include user32.inc nFn5v'g
includelib user32.lib ^Dx&|UwiZa
include kernel32.inc z{>Rc"%\
includelib kernel32.lib p[cX O=
;数据段 Pz^544\~ou
.data Zc2PepIg
szCaption db 'A MessageBox!',0 EK'!}OGCG
szText db 'Hello,world!',0 g&.=2uP
;代码段 iQ{VY
^
0
.code s`UJ1eJ
start: @pxcpXCy
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK @|r{;'
invoke ExitProcess,NULL j!ch5A
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 8i pez/
end start svSVG:48
.^g p?
= /8cp
AWK E.f%H(b
BEGIN { print "Hello, world!" } 4I7>f]=)
cNH7C"@GVu
ElXFeJ%[G
BASIC HTtnXBJ)*H
传统版BASIC(例如GWBASIC): r/1(]#kOX
\Cj B1]I
10 PRINT "Hello, world!" \DzGQ{`~m
20 END #Dac~>a'
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或在提示符输入: 3sk9`=[{$
*`U~?q}
?"Hello, world!":END rs.)CMk53
'Vbi VLWD
现代版BASIC(例如Quick BASIC): h$*!8=M
[gB+C84%%
Print "Hello, world!" 6nQq
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以下的语句在Quick BASIC中同样有效: P%zK;#8V
f5r0\7y0
? "Hello,world!" D]}G.v1
>V~E]P%@
fIF8%J ^3
BCPL kP"9&R`E
GET "LIBHDR" "}!G!k:
HV.t6@\};
LET START () BE =Uh$&m
$( ;aBG,dr}i
WRITES ("Hello, world!*N") #S(Hd?34,
$) <qSC#[xu
OCUr{Nh
:>*7=q=
Befunge 6pzSp
"!dlrow olleH">v 2?5>o!C
, ,^:.dFH6
^_@ ;]iRk
NgwbQ7)
^_6|X]tz1T
Brainfuck '7/)Ot(
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< =WLY 6)]A
+++++++++++++++.>.+++.------.--------.>+.>. Th%zn2R B
%;/P&d/
nu^436MSOa
C y2v^-q3
#include <stdio.h> C}X\|J
>7FHo-H/T
int main(void) (mOtU8e
{ lk!@?
printf("Hello, world!\n"); GVz6-T~\>
return 0; D@KlOU{<
} @L`jk+Y0vF
O2+ 6st
7,MR*TO,
C++ @d_M@\r=j
#include <iostream> 5^cCY'I
6LZCgdS{
int main() t7pFW^&
{ o4;(Zi#Z
std::cout << "Hello, world!" << std::endl; ta0|^KAA
return 0; DH=hH&[e(d
} *Ly6`HZ9
"7
yD0T)2
3%6?g*
C++/CLI K:M8h{Ua
int main() MA\V[32H
{ 6Zo}(^Ovz
System::Console::WriteLine("Hello, world!"); xk5]^yDp
} TpaInXR
iscz}E,Y
s.rm7r@#
C# (C Sharp) sKWfXCd
class HelloWorldApp x;S @bY
{ )BE1Q*=
n
public static void Main() .}t
e>]A*
{ e.C)jv6qr
System.Console.WriteLine("Hello, world!"); .`lCWeHN
} #WuBL_nZ~
} <%d>v-=B
Dv"9qk
x:;kSh
COBOL
XX@ZQcN
IDENTIFICATION DIVISION. g-A-kqo9
PROGRAM-ID. HELLO-WORLD. s1rCpzK0
j.Hf/vi`z
ENVIRONMENT DIVISION. eDMO]5}Ht
b-DvW4B
DATA DIVISION. 3mgD(,(^
BLttb
PROCEDURE DIVISION. )UR7i8]!0
DISPLAY "Hello, world!". UpG~[u)%@
STOP RUN. |N2#ItBbW
vt8By@]:
*p U x8yB
Common Lisp khe}*y
(format t "Hello world!~%") &pRREu:[4L
=euni}7a
UfGkTwoo=
DOS批处理 tA;}h7/Lc~
@echo off oxs#866x
echo "Hello, world!" W4S,6(
Upe%rC(
KPF1cJ2N
Eiffel !a`&O-ye
class HELLO_WORLD ,F|f. 7;
(HVGlw'`
creation EwN}l
make iMlWM-wz>O
feature r&CiSMS*
make is K-4PI+qQ\
local t_^4`dW`
io:BASIC_IO /xhKd]Q
do #e"[^_C@!
!!io 5O%{{J
io.put_string("%N Hello, world!") aUp
g u"
end -- make A"]YM'.
end -- class HELLO_WORLD ^W^OfY
>6T8^Nt
V88p;K$+
Erlang eFgA 8kY)
-module(hello). jp,4h4C^)
-export([hello_world/0]). 4dlGxat
TbU#96"~.
hello_world() -> io:fwrite("Hello, World!\n"). DQ3<$0
TOt dUO
V0@=^Bls
Forth Vr}'.\$
." Hello, world!" CR 3`g^
*@5 @,=d
a(nlTMfu
Fortran 7.Op<
WRITE(*,10) 0B2t"(&
10 FORMAT('Hello, World!') :Ye !w$r
STOP ]^E?;1$f?
END ye&;(30Oq
kVgTGC"L=
CJY$G}rk
HTML P:c w|Q
<HTML> ^q5#ihM
<HEAD> K?;DMUSY\
<TITLE> Hello World! </TITLE> <~)P7~$d?p
</HEAD> 6x`t{g]f,
<BODY> )nkY_'BV
<p>Hello World!</p> x5Bk/e'
</BODY> d{?LD?,)
</HTML> q V=!ORuj
oJ^P(] dw
Lbgi7|&
HQ9+ ah "o~Cbj
H zhQJy?>'m
c 9Mz]1@f
D.:Zx
INTERCAL ?<!|
PLEASE DO ,1 <- #13 y29m/i:
DO ,1 SUB #1 <- #238 `Di{}/2
DO ,1 SUB #2 <- #112 e~OpofJNb
DO ,1 SUB #3 <- #112 Jy)/%p~
DO ,1 SUB #4 <- #0 sJZiI}Xc
DO ,1 SUB #5 <- #64 6nn*]|7
DO ,1 SUB #6 <- #238 3";q[&F9y
DO ,1 SUB #7 <- #26 %{W6PrY{
DO ,1 SUB #8 <- #248 "oyo#-5z
DO ,1 SUB #9 <- #168 /ZX}Nc g
DO ,1 SUB #10 <- #24 hN_]6,<\
DO ,1 SUB #11 <- #16 \fOEqe*5SM
DO ,1 SUB #12 <- #158 [^iN}Lz
DO ,1 SUB #13 <- #52 M\j.8jG
PLEASE READ OUT ,1 /vt3>d%B;
PLEASE GIVE UP z{q`G wW
zLQx%Yg!
0GL M(JmK
Java l1I#QB@5n
public class Hello @7}W=HB
{ PCA4k.,T
public static void main(String[] args) K/$KI7P
{ :jf3HG
System.out.println("Hello, world!"); Py<}S-:
} e-;}366}
}
7GGUV
4+n\k
_c07}aQ ],
JSP qq?!LEZ
<% /
{%%"j
out.print("Hello, world!"); BtZ yn7a
%> }V>T M{
st*gs-8jJ;
c-w)|-ac.
MIXAL #yen8SskB
TERM EQU 19 the MIX console device number !D6]JPX
ORIG 1000 start address lZ0 =;I
START OUT MSG(TERM) output data at address MSG {
w_e9W bi
HLT halt execution 4i bc
MSG ALF "MIXAL" K3C <{#r
ALF " HELL" f1? >h\F8
ALF "O WOR" =1!
'QUc
ALF "LD " =N@t'fOr
END START end of the program ~[: 2I
/reX{Y
sLFl!jX
Nuva '-6~tWC~7
<..直接输出..> & kIFcd@
Hello, world! YIE<pX4Q7)
^Cmyx3O^
<..或者..> E7hhew
k9R9Nz|J
<. POW>~Tof1
// 不带换行 6zkaOA46V
? "Hello, world!" }G=M2V<L
NA*#~
// 或者 |{;G2G1[
)"LJ
hLg
// 带换行 g}i61(
?? 'Hello, world!' R+| h w;
.> E]6
6]+;0_
V :eD]zq5
-di o5a
OCaml !wNO8;(
let main () = <VcQ{F
print_endline "Hello world!";; fVwUe _Y
wzaV;ac4K
Mtv?:q
Pascal H]!"Zq k
program Hello; &zhAh1m
begin GfG|&VNlz
writeln('Hello, world!'); !BI;C(,RL
end. l,:F
Qd6F H2Pl
_ m>b2I?
Perl g>sSS8RO
#!/usr/local/bin/perl zQA`/&=Y
print "Hello, world!\n"; HDKbF/
ckn~#UE=
'|4!5)/K
PHP 8Y3I0S
<?php F/Pep?'
print("Hello, world!"); N7_"H>O$0U
?> "ta x?
cAy3^{3:
C?Ucu]cW
Pike ~Z+%d9ode
#!/usr/local/bin/pike $N\Ja*g
int main() ]?)TdJ`
{ 7|D +Ihy;
write("Hello, world!\n"); l@\FWWQ
return 0; xpI wrJO
} .o8t+X'G
KgG4*<
zVD:#d%b
PL/I nie% eC&U
Test: procedure options(main); ]d`VT)~vje
declare My_String char(20) varying initialize('Hello, world!'); jIF
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put skip list(My_String); mt`.6Xz~
end Test; sr}E+qf
P_dJZ((X
L(o15
Prolog
9akH
goal m3ff;,
write("hello,world!"). .G^YqJ 4
iOdpM{~*
B;WCTMy}
Python ,
dp0;nkr
#!/usr/local/bin/python ap~^Ty<>
print "Hello, world!" 875od
6r_)sHf
{PmZ9
REXX vI]N^j2%
say "Hello, world!" %bfZn9_m
"mNq&$
c)tfAD(N8x
Ruby \?N2=jsu$
#!/usr/bin/ruby ??T#QQ
print "Hello, world!\n" akT6^cP^
Z6pUZ[j,
fzA9'i`
Scheme m4g$N)
(display "Hello, world!") i LAscb
(newline) qCO/?kW
:Yks|VJ1
j=J/x:w_e
sed (需要至少一行输入) N&pCx&
sed -ne '1s/.*/Hello, world!/p' g*"P:n71
'\GbmD^F
Dxxm="FQZ
Smalltalk LK"69Qx?5q
Transcript show: 'Hello, world!' j5ve2LiFV%
km40qO@3
Uwi7)
SNOBOL E!#WnSpnK
OUTPUT = "Hello, world!" *:NQ&y*uj
END Faf&U%]*`
:c[L3rJl
aATA9V
SQL o lxByzTh>
create table MESSAGE (TEXT char(15)); Yrn)VV[)h
insert into MESSAGE (TEXT) values ('Hello, world!'); nLiY%x`S
select TEXT from MESSAGE; V_:&S2j
drop table MESSAGE; V!dtF,tH
x=jK:3BF
"T"h)L<
Tcl &w~d_</
#!/usr/local/bin/tcl -GgA&dh
puts "Hello, world!" (M
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9I/N4sou
F3N6{ysK#
TScript p"Z-6m~
? "Hello, world!" 4g7)i L^#~
=>dGL|
$j?1g#
Turing V/;B3t~f
put "Hello, world!" _7)n(1h[3b
C/&-l{7
Ydy9
UNIX-style shell Qdp)cT
程序中的/bin/sh可改为您使用的shell *|E[L^
LraWcO\or'
#!/bin/sh nJLFfXWx
echo 'Hello, world!' :Lug7bUVD
Rx|;=-8zg
5P$4 =z91
GUI vA.MRu#
jb;hcraR
Delphi (Clkv
program HelloWorld; Uv~QUL3>
uses _\HQvH
Dialogs; .-X8J t
begin w8D"CwS1Rx
ShowMessage('Hello, World!'); !&Pui{F
end. Zoc0!84<z
50C
7fX<511(
Nuva vFK<J Sk!
<. CWP2{
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) 9
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.> z%LIX^q9
FjI`uP
l?^4!&Nm
Visual Basic 8Dm%@*B^b
MsgBox "Hello, world!" ^Js9 s8?$
'或者 Bng@-#`/
Print "Hello, world!" dmN&+t
M+9 gL3W
xpx\=iAe
Visual FoxPro ;l-!)0U
? "Hello, world!" QZ%`/\(!8_
yqiq,=OvP
*GN#
r11d
X11 ig':%2V/
用一个程序 {Fe[:\
^Zy%fv,
xmessage 'Hello, world!' xLZG:^(I
[bNx^VP*
用C++和gtkmm 2 |WdPE@P
Yr=Y@~ XL
#include <iostream> f &wb
#include <gtkmm/main.h> _1L![-ac
#include <gtkmm/button.h> "4,?uPi
#include <gtkmm/window.h> }t1a*z
using namespace std; ?vHU#
1&(V
class HelloWorld : public Gtk::Window eSmLf*\G
{ A;|D:;x3G
public: qXtC^n@x
HelloWorld(); 2q4<t:!
virtual ~HelloWorld(); JyOo1E.
protected: kO*$"w#X[p
Gtk::Button m_button; ^7KH _t8
virtual void on_button_clicked(); dIBE!4 V[
}; LRG6:&
o\pVp bB
HelloWorld::HelloWorld() : m_button("Hello, world!") Jh[UtYb5
{ *m,k(/>
set_border_width(10); <=0
u2~E
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); K_ ~"}
add(m_button); =k0_eX0
m_button.show(); o;R2p $
} b4ONh%
H_X [t* 2
HelloWorld::~HelloWorld() {} )vb*Ef
.KUv(-
void HelloWorld::on_button_clicked() l
+OFw)8od
{ 2!J&+r
cout << "Hello, world!" << endl; D"?fn<2
} fs%.}^kn
2=`o_<P'"
int main (int argc, char *argv[]) >P@H#=
{ c%G{#}^2
Gtk::Main kit(argc, argv); XkF%.hWo
HelloWorld helloworld; j; y#[|
Gtk::Main::run(helloworld); 4f'V8|QM{
} 2Kyl/C,
b@f$nS
B
/}
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Java =4PV;>X
import java.awt.*; /qGf 1MHD
import java.awt.event.*; j4`0hnqI
QYjsDL><
public class HelloFrame extends Frame MET' (m
{ Ksj -zR;
HelloFrame(String title) k!HK 97qA
{ i/ )am9
super(title); 1@R
Db)<V
} -w_QJ_z_
public void paint(Graphics g) ]?
g@jRs
{ Dq5j1m.
super.paint(g); ~r`9+b[9{
java.awt.Insets ins = this.getInsets(); TQ*1L:X7M&
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); k+C zj
} NzSoqh{R
public static void main(String args []) #( jw!d&
{ Vq\`+&A
HelloFrame fr = new HelloFrame("Hello"); Id|L`
w
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fr.addWindowListener( \$\ENQ;Nk
new WindowAdapter() Q[pV!CH
{ ps%q9}J
public void windowClosing(WindowEvent e) 3#&7-o
{ U`d5vEhT
System.exit( 0 ); db6b-Y{
} OJ$]V,Z00x
} V'T ,4
); -Sx\Xi"<o=
fr.setResizable(true); ws|;`
fr.setSize(500, 100); _m'Fr
7
fr.setVisible(true); WIf0z#JMJm
} % !>I*H
} "a"]o
WKIoS"?-F
7:3$Ey
Java Applet rIhl.5Y
Java Applet用于HTML文件。 PGBQn#c<