“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。 5e|2b] f$
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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》。 5Y W.s
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以下是用不同语言写成的Hello World程序的几个例子: wBb J
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Ada VY#:IE:T
with Ada.Text_Io; use Ada.Text_Io; Onqd2'%<
procedure Hello is sgRD]SF
begin ^-Knx!z
Put_Line ("Hello, world!"); K5ywO8_6`
end Hello; 3SU:Xd(\o
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汇编语言 M.loG4r!
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x86 CPU,DOS,TASM UojHlTg#bT
MODEL SMALL yE80*C~d
IDEAL -eA3o2'
STACK 100H |K jy4.2
aV6l"A]
DATASEG M10u?
HW DB 'Hello, world!$' 0nDlqy6b1b
JOA_2qa>\
CODESEG Bp.z6x4
MOV AX, @data :AzP3~BI
MOV DS, AX F:P&hK
MOV DX, OFFSET HW ndY1j5
MOV AH, 09H *a2y
INT 21H Z#i5=,Bk
MOV AX, 4C00H
F[65)"^
INT 21H }$zJdf,\
END "V>7u{T
a BHV
j+E[[
x86 CPU,GNU/Linux,NASM F9Bj$`#)
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). RwR.*?#
;Enter this into "hello.asm" then type: R\+O.vX
;"nasm -f elf hello.asm" _s&sA2r<
;"ld hello.o -o hello" c[DC
;"./hello" ju@5D
h
j$f `:A
section .data ;data section declaration @uWPo2
msg db 'Hello World!',0AH JuD$CHg;#
len equ $-msg ;string length FQ72VY
&7gE=E(M
section .text ;code section declaration :2\H>^uV
global _start ;entry point (start of execution) s)e' }y
_start: mov edx,len ;string length =u+.o<
mov ecx,msg ;string start N-+`[8@(P<
mov ebx,1 ;file handle: stdout 6kc/
mov eax,4 ;sys_write 5nhc|E)C
int 80h ;kernel system call k/|j e~$
3cp"UU}.
mov ebx,0 ;return value j1LL[+G-"_
mov eax,1 ;sys_exit -c1$>+
int 80h ;kernel system call v8<MAq
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x86 CPU,Windows,MASM32 qZ:-- ,9+
.386 ~
3HI;
.model flat,stdcall z
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option casemap:none }k-rOi'jL
;Include 文件定义 SLiQHWw*J
include windows.inc b,7@)sZ*
include user32.inc 9=-!~_'1-
includelib user32.lib u}[Z=V
include kernel32.inc zg3q\~
includelib kernel32.lib KLc<c1BZ
;数据段 kp+\3z_
.data D-zqu~f`
szCaption db 'A MessageBox!',0 otsINAizgS
szText db 'Hello,world!',0 cX64 X
;代码段 b;[u=9ez
.code &
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start: ~IB~>5U!
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK (aO+7ykRuJ
invoke ExitProcess,NULL .-:R mYGR
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> `GG PkTN
end start U
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o,fBOPIN
AWK ^c9~~m16+
BEGIN { print "Hello, world!" } *d,u)l :S
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D;VFMP
BASIC =a_B' ^`L
传统版BASIC(例如GWBASIC): 'WUevPmt
8#Q=CTjF
10 PRINT "Hello, world!" iCouGd}
20 END =;1MpD
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或在提示符输入: jocu=Se@
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?"Hello, world!":END 7[l
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现代版BASIC(例如Quick BASIC): ~6nq$( #
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Print "Hello, world!" kpkN GQ2
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以下的语句在Quick BASIC中同样有效: (+Yerc.NQt
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? "Hello,world!" &}1PH%6
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& >AXB6
BCPL ;b[% L&
GET "LIBHDR" ~CQYF,[Th
}5RCks;)*
LET START () BE ,R
j{^-k
$( o3hsPzOQx
WRITES ("Hello, world!*N") B6gSt3w.
$) +G3&{#D
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1RtbQ{2F;
* Yr)>;^
Befunge g`jO
"!dlrow olleH">v ,$,6%"'"
, 29?{QJb
^_@ /x6,"M[97
,H3~mq]
xj/ +Z!,9
Brainfuck "%aJ'l2
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< yIwAJl7Xf
+++++++++++++++.>.+++.------.--------.>+.>. 7P`|wNq
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C Y5~_y?BX
#include <stdio.h> fA
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*dn~-W.
int main(void) ic:_v?k
{ r00 fvZyK
printf("Hello, world!\n"); -{i;!XE$SR
return 0; igp[cFN
} s[|sfqB1`
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C++ I| qoH N,g
#include <iostream> dnVl;L8L3
@,D 3$P8}
int main() )W!8,e+%
{ )8ejT6r
std::cout << "Hello, world!" << std::endl; EKsL0;FV
return 0; sO~:e?F
} vu[+UF\G
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C++/CLI T|NNd1>
int main() 9FT;?~,
{ r5XG$:$8\
System::Console::WriteLine("Hello, world!"); Gn+D%5)$I
} , ;L
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C# (C Sharp) `s (A&=g\
class HelloWorldApp KH)(xB=
{ XUmL 8
public static void Main() % (R10G
{ {O,D9 <
System.Console.WriteLine("Hello, world!"); pOlo_na}[
} .%7#o
} .
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COBOL 3A%/H`
IDENTIFICATION DIVISION. `#&pB0.y
PROGRAM-ID. HELLO-WORLD. cg$@x\fJ
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ENVIRONMENT DIVISION. h_ef@ZwSw
L-\-wXg%
DATA DIVISION. TIbqUR
N!>Gg|@~
PROCEDURE DIVISION. |Ui1Mm
DISPLAY "Hello, world!". 2Q`@lTUv
STOP RUN. uBI?nv,
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W8j)2nKD
Common Lisp L
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(format t "Hello world!~%") OI"vC1.5
d?(#NP#;
vdrV)^
DOS批处理 S~fQ8t70
@echo off $e#p -z
echo "Hello, world!" l\7N R
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BRF=TL5Z
Eiffel ',k0_n?t
class HELLO_WORLD K*Y.mM)
3+_? /}<
creation }R:e[lKj
make ^& ZlV
feature ab8uY.j
make is *[jG^w0z8~
local VyH'7_aU
io:BASIC_IO y6ntGrZ}$
do ^OKCvdS
!!io Szrr`.']
io.put_string("%N Hello, world!") 8MgoAX,p
end -- make ~TCz1UWV
end -- class HELLO_WORLD U2z1HIs
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Erlang ,:UoE
-module(hello). RWtD81(oC'
-export([hello_world/0]). Yz;Hu$/
WbC|2!
hello_world() -> io:fwrite("Hello, World!\n"). Tct8NG
k L2(M6m
7ET^,6
Forth pASNiH698
." Hello, world!" CR ,<*n>W4|
Qi`Lj5;\F
#4"(M9kf
Fortran $6w[h7
WRITE(*,10) !qPVC\l
10 FORMAT('Hello, World!') YlDui8.N
STOP P]:r'^Yn
END 44 ,:@
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HTML v
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<HTML> s 7re
<HEAD> ^Ts|/+}'i
<TITLE> Hello World! </TITLE> MjCD;I:C.
</HEAD> uc9t0]o=h
<BODY> An cmSi
<p>Hello World!</p> $6.CN#
</BODY> 8B;wn<O
</HTML> H%NIdgo}
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w1B!z
HQ9+ [YG\a5QK
H ?WE#%W7U
n[ip'*2L
E>f+ E8?
INTERCAL B9pro%R1Bo
PLEASE DO ,1 <- #13 O\;Z4qn2=
DO ,1 SUB #1 <- #238 d;O16xcM/
DO ,1 SUB #2 <- #112 GlYNC&,VL
DO ,1 SUB #3 <- #112 -C]RFlV
DO ,1 SUB #4 <- #0 PPO*&=!]
DO ,1 SUB #5 <- #64 ogQY"c8
DO ,1 SUB #6 <- #238 ei)ljvvmHP
DO ,1 SUB #7 <- #26 D+?/MrP
DO ,1 SUB #8 <- #248 j*@^O`^v
DO ,1 SUB #9 <- #168 -L@4da[]i
DO ,1 SUB #10 <- #24 Xdj` $/RI
DO ,1 SUB #11 <- #16 >2tQ')%DJ
DO ,1 SUB #12 <- #158 )*@n G$i99
DO ,1 SUB #13 <- #52 3wK{?
PLEASE READ OUT ,1 }}y$T(:l
PLEASE GIVE UP X@KF}x's
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||3%REliC
Java V(Ll]g/T_;
public class Hello b,"gBg
{ A g=>F5
public static void main(String[] args) ZaJg$
{ mne4u W
System.out.println("Hello, world!"); -
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} (c;F%m|
} -Yx'qz@
9r.Os
N"SFVc_2
JSP |}N -5U
<% Zg1=g_xY
out.print("Hello, world!"); Rd~-.&
%> 9/3gF)I}
xtWQ.
&}:'YK*X
MIXAL u;p.:{'
TERM EQU 19 the MIX console device number o))z8n?b
ORIG 1000 start address m
"'
START OUT MSG(TERM) output data at address MSG /H.w0fu&.S
HLT halt execution 94 58.!3
MSG ALF "MIXAL" !h3$C\
ALF " HELL" =Hplg>h)
ALF "O WOR" AsJN~<0h
ALF "LD " I3`WY-uv
END START end of the program 5%,5Xe4p
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Nuva wSoIU,I
<..直接输出..> o1C1F}gxU
Hello, world! Ji4xor
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07
<..或者..>
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+(n&>75
<. JDPn
// 不带换行 V45A>#?U
? "Hello, world!" 87WIDr
..BIoSrj
// 或者 FOJ-?s(
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// 带换行 l~P%mVC3m
?? 'Hello, world!' T-e'r
.> s2=rj?g&(X
"(bnr0
;f,`T
OCaml Xc"l')1H
let main () = MLwh&I9)
print_endline "Hello world!";; i) v
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ROcI.tL
Pascal fA"N5qQI(
program Hello; O@.C.5Ep
begin |R$V[
writeln('Hello, world!'); r}351S5(
end. FW* k O
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Perl '}#=I 9=ss
#!/usr/local/bin/perl UrtA]pc3L
print "Hello, world!\n"; *IBT!@*Q&
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fz/Ee1T\
PHP C\"nlNKw
<?php %oPW`r
print("Hello, world!"); m? 3!
?> 0u[Vd:()v(
.*FBr7rE\
6ub-NtVu
Pike NGQBOV
#!/usr/local/bin/pike A|jmp~@K)+
int main() XC44]o4jx
{ '-9B`O,&
write("Hello, world!\n"); Zo$,{rl
return 0; t
Qo)* z
} =iJfz
xvo""R/g8
pJ8;7u
PL/I K1y]
Test: procedure options(main); E"i<fr
T
declare My_String char(20) varying initialize('Hello, world!'); %L;z ~C
put skip list(My_String); ',Y`XP"Q
end Test; l Tpn/
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ivTx6-]
Prolog |,YyuCQcL[
goal 6.#5Ra
write("hello,world!"). z!`aJE/
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i'XW)n
Python _8zZ.~)
#!/usr/local/bin/python T}fH
print "Hello, world!" Nf@-i`
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*=G~26*!V
REXX ~>2DA$Ec
say "Hello, world!" ?
2#tIND
X8(H#Ef[
aTi2=HL=S
Ruby ,orq*Wd
#!/usr/bin/ruby :Q\Es:y
print "Hello, world!\n" YoC{ t&rY
Cn\5Vyrl
h>0R!Rl8
Scheme r0MUv}p#|L
(display "Hello, world!") =yT3#A~<G
(newline) |:qaF
Tt^PiaS!
/NE<?t N
sed (需要至少一行输入) gc5u@(P"
sed -ne '1s/.*/Hello, world!/p' 3)D' Yx
o`tOnwt
I`e$U
Smalltalk .>X0 $#
Transcript show: 'Hello, world!' @^q|C&j
;i;2cq
ucP"<,a
SNOBOL &\n<pXQ
OUTPUT = "Hello, world!" tr[(,kX
END Z~X \Z.
vw.rkAGY
oc|%|pmRd<
SQL ZnrsJ1f:
create table MESSAGE (TEXT char(15)); p?@R0]
insert into MESSAGE (TEXT) values ('Hello, world!'); &-5`Oln
select TEXT from MESSAGE; *s=jKV#
drop table MESSAGE; G
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QaVxP1V#U
Ca2He}r`
Tcl -'!K("
#!/usr/local/bin/tcl $m
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puts "Hello, world!"
AqqD!
st7\k]J\
f0^;*Y
TScript SRP.Mqg9
? "Hello, world!" CIt%7
\c
1\t# *N
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Turing NA :_yA"
put "Hello, world!" /m"#uC!\
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yuef84~
UNIX-style shell E%.w6-
程序中的/bin/sh可改为您使用的shell i(Xz3L#(
v0aV>-v
#!/bin/sh H\>0jr`
echo 'Hello, world!' rd
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G5l?c@o
a+-X\qN
GUI c}-ADr9
5%6{ ePh{
Delphi V/t/uNm
program HelloWorld; y^u9Ttf{
uses `] fud{
Dialogs; qj.>4d
begin
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ShowMessage('Hello, World!'); Z&Qz"V>$
end. Y5/SbQYf1
uc~/l4~N
w'r?)WW$
Nuva av8\?xmo.$
<. ^ ,cwm:B@
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) RV=Z$
.> uY_vX\;67z
nt:d,H<p
@H83Ad
Visual Basic bb4 `s0
MsgBox "Hello, world!" 0[
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'或者
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Print "Hello, world!" gs:V4$(p4
=xs"<Q*w>
RE<s$B$[
Visual FoxPro @CB&*VoB
? "Hello, world!" r3}Q1b&
\3hj/
*x<3=9V
X11 ?cB:1?\j
用一个程序 <i$ud&D
NZQl#ZJH:
xmessage 'Hello, world!' fep8hf B;
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用C++和gtkmm 2 RxB9c(s^@
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r)_
#include <iostream> $[6] Ly(F)
#include <gtkmm/main.h> J$>9UCk7B
#include <gtkmm/button.h> k|r|*|8
#include <gtkmm/window.h> /QW-#K|S&
using namespace std; 9j8<Fs0M
q}+Fm?B
class HelloWorld : public Gtk::Window !7>~=n_,L.
{ +EOd9.X\~
public: }o d5kK;
HelloWorld(); '
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virtual ~HelloWorld(); $&ZN%o3
protected: -tH ^Deo
Gtk::Button m_button; JBK(Nk
virtual void on_button_clicked(); C[JGt9{Y
}; Uaz$<K6
L#~z#
HelloWorld::HelloWorld() : m_button("Hello, world!") R^f-j-$o]
{ 0Q{^BgW
set_border_width(10); oD8X]R,
H
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); .kqH}{hf
add(m_button); N]dsGvX
m_button.show(); %NH{%K,
} l\DcXgD
x
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HelloWorld::~HelloWorld() {} RQ*oTsq
EG#mNpxE
void HelloWorld::on_button_clicked() A>Y#-e;<d
{ #\T5r*W
cout << "Hello, world!" << endl; T\OpPSYbl
} p02E:?
@x[Arx^?}
int main (int argc, char *argv[]) :$f9(f&
{ nsjrzO79L8
Gtk::Main kit(argc, argv); 2_C&p6VGj
HelloWorld helloworld; A>B_~=
Gtk::Main::run(helloworld); \1f&D!F]b
} mGC! 7^_D`
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pRc<U^Z.h
Java =%ry-n G
import java.awt.*; [eLU}4v{
import java.awt.event.*; Z` zyEP A
2 e9lk$
public class HelloFrame extends Frame =;m;r!,K
{ di|5|bn7
HelloFrame(String title) Z~6PrM-M
{ Hq!|(
super(title); j1i<.,0g
} &Ndq^!e
public void paint(Graphics g) d3&l!DoX
{ =LyRCrA
super.paint(g); I%'6IpR"d
java.awt.Insets ins = this.getInsets(); NA{?DSP
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); \Pt_5.bTs[
} $/|2d4O:{
public static void main(String args []) >`)IdX
{ Xo/0lT
HelloFrame fr = new HelloFrame("Hello"); W</\F&
+<$b6^>!$
fr.addWindowListener( SadffAvSA{
new WindowAdapter() Kn`-5{1B|
{ 586lN22xM
public void windowClosing(WindowEvent e) q6AL}9]9
{ t +h}hL
System.exit( 0 ); <d]
t{M62W
} 8I)}c1j`v
} i7|sVz=
); >,A&(\rO
fr.setResizable(true); 3x3 =ke!
fr.setSize(500, 100); mNdEn<W
fr.setVisible(true); MzpDvnI9
} *<#$B}!{
} 2E_d$nsJ
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}:xj%?ki
Java Applet x2$Y"b?vz
Java Applet用于HTML文件。 MgrJ ;?L
Bnu5\P
HTML代码: pUm|e5
jrLV \(p
<HTML> ^#p+#_*V
<HEAD> K<~J*k<v
<TITLE>Hello World</TITLE> ^/:G`'
</HEAD> 4fgYO]
<BODY> %=<