“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。 2pQdDbm
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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》。 m6=Jp<
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以下是用不同语言写成的Hello World程序的几个例子: K<Qy1y~[
Ada )dgooq
with Ada.Text_Io; use Ada.Text_Io; 5U+a{oA
procedure Hello is 4(FEfde=
begin NN;'QiE
Put_Line ("Hello, world!"); p&~= rp`E
end Hello; rF8nz:8
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l
/\n7:
汇编语言 ayvHS&h
?H2{R:
x86 CPU,DOS,TASM Y +9OP
MODEL SMALL &0*=F%Fd
IDEAL (]l}QR%Bxu
STACK 100H 4Cdl^4(LT
?nya;Z-~Hc
DATASEG ADQ#qA,/
HW DB 'Hello, world!$' )+ss)LEC
;=[~2*8
CODESEG ^cy.iolt
MOV AX, @data bez_|fY{T
MOV DS, AX gZD,#D.hR
MOV DX, OFFSET HW @3:oo
/;
MOV AH, 09H 5@xl/
INT 21H h7h[!>
MOV AX, 4C00H ,:e##g~k
INT 21H LYv$U;*+
END z sZP\
psHW(Z8G
3Y}X7-|)Z
x86 CPU,GNU/Linux,NASM *75?%l
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ))qOsphN
;Enter this into "hello.asm" then type: g}\Yl.
;"nasm -f elf hello.asm" 6fOh *
;"ld hello.o -o hello" U[Pll~m2b
;"./hello" !}gC0dJ
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section .data ;data section declaration dfmxz7V
msg db 'Hello World!',0AH eaI!}#>R+
len equ $-msg ;string length 8=%%C:
#l!Sz247
section .text ;code section declaration ^Cs5A0xo#s
global _start ;entry point (start of execution) smM*HDK
_start: mov edx,len ;string length 1~HR;cTv=
mov ecx,msg ;string start uNV\_'9>Y
mov ebx,1 ;file handle: stdout Gg3cY{7
mov eax,4 ;sys_write #$GDKK
int 80h ;kernel system call ;be2sTo
fA]b'8
mov ebx,0 ;return value Wy2 pa
#Q
mov eax,1 ;sys_exit -|l^- Qf!
int 80h ;kernel system call JDyP..Dt
nzdJ*C
q~^qf
x86 CPU,Windows,MASM32 `nxm<~-\
.386 g)<t=+a
.model flat,stdcall ItZqLUJm
option casemap:none .5',w"R
;Include 文件定义 J 1?)z+t9~
include windows.inc .7ZV:m
include user32.inc /GK1}h
includelib user32.lib <3wfY
#;><
include kernel32.inc z]NzLz9VfL
includelib kernel32.lib
`@acQs;0
;数据段 _oB!-#
.data ov{
szCaption db 'A MessageBox!',0 =+T$1
szText db 'Hello,world!',0 OIuEC7XM^C
;代码段 h|_E>6d)
.code 4v"9I(
start: @w)Vt$+b]
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK a)+;<GZ~
invoke ExitProcess,NULL 'nOc_b0
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Ix;9D'^}
end start t,*hxzD"
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8\+Q*7~@i
AWK [>IAS>
BEGIN { print "Hello, world!" } ):@XMECa
$nB4Ie!WcR
73kF=*m
BASIC Pd99vq/
传统版BASIC(例如GWBASIC): }{J5)\s9
+ht -Bl
10 PRINT "Hello, world!" %1uY
20 END JmJ8s hq
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或在提示符输入: TG\3T%gH/s
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?"Hello, world!":END ]]\\Y|0
gK {-eS
现代版BASIC(例如Quick BASIC): *C~O[:6D
[NE:$@
Print "Hello, world!" RT2%)5s
j Y>BU&
以下的语句在Quick BASIC中同样有效: T}ZUw;}BL
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? "Hello,world!" Y)kO"
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BCPL *_
2db
GET "LIBHDR" 29(s^#e8A
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LET START () BE m{(G%n>E&
$( :zXkQQD8`
WRITES ("Hello, world!*N") >wiW(Ki}
$) _e%jM[
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C]ev"Am_)
Befunge `GsFvxz
"!dlrow olleH">v _~?N3G
, R;2tb7 o
^_@ K3QE>@']
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Nf.6:=
Brainfuck Q/oe l'O*x
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< xE$(I<:
+++++++++++++++.>.+++.------.--------.>+.>. N/ 7Q(^
oxN~(H)/ #
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C V87?J w%2
#include <stdio.h> y8=(k}=3
vs3px1Xe#
int main(void) Xr54/.{&@
{ 6%/@b`vZ
printf("Hello, world!\n"); '~2S BX?J
return 0; 1bW[RK;GE
} AS;EO[Vn
bo]xah|."j
>'>onAIL
C++ NdpcfZq
#include <iostream> 7Sc._G{[%
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int main() 5,3Yt ~\m
{ 9G7lPK
std::cout << "Hello, world!" << std::endl; Rj&V~or
return 0; ,2H@xji
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} FyZp,uD
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'Xl[ y
C++/CLI K!|%mI8gk
int main() %kM|Hk3d
{ DOi\DJV!
System::Console::WriteLine("Hello, world!"); w Phs1rL
} ;t'~
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C# (C Sharp) x.Sq2rw]V
class HelloWorldApp iHKWz)0
{ y:TLGQ0
public static void Main() gwvy$H
{ ,j{$SuZM
System.Console.WriteLine("Hello, world!"); m"MTw@}SJ;
} }R.<\
} J1,\Q<
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COBOL (A.%q1h
IDENTIFICATION DIVISION. _7?LINF9
PROGRAM-ID. HELLO-WORLD. Isa]5>
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ENVIRONMENT DIVISION. *KF-q?PBb
wyqXD.of
DATA DIVISION. joa|5v'
^rd]qii"
PROCEDURE DIVISION. F\1{b N|3
DISPLAY "Hello, world!". _<?lP$Xr
STOP RUN. y993uP
%T3L-{s5
=Z
^=
Common Lisp Eeemy*U
(format t "Hello world!~%") KsZXdM/
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wx
(uBevU\
DOS批处理 b[<Q_7~2
@echo off *9((X,v@/
echo "Hello, world!" ML?%s`
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Y3G$(+i8
Eiffel `MFw2nu@t
class HELLO_WORLD [xiZkV([
GEU:xn
creation T% J;~|
make Vrl)[st!;I
feature K@lZuQ.1
make is /7#KkMg
local |FS,Av
io:BASIC_IO FHWzwi*u}
do BG!;9Z{u
!!io G+?@4?`z
io.put_string("%N Hello, world!") z6e)|*cA$
end -- make '6Dt@^-PZ
end -- class HELLO_WORLD uKF?UXc
y&T(^EA;
%''z~LzJ8
Erlang z,/0e@B >
-module(hello). p@`rBzGp
-export([hello_world/0]). DI O @Zo
)%'Lm
hello_world() -> io:fwrite("Hello, World!\n"). 1jU<]09.
tX)l$oRPr
;4<CnC**
Forth #;GIvfW
." Hello, world!" CR W!B4~L
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b'Cy!d r
Fortran No8 ~~
WRITE(*,10) .ruGS.nS4
10 FORMAT('Hello, World!') c$aTl9e
STOP H'68K8i0
END MI o5Y`T
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HTML q
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<HTML> NQS@i'W=g
<HEAD> ='f<_FD
<TITLE> Hello World! </TITLE> AD$k`Cj
</HEAD> O8+e: K[D
<BODY> K|$Dnma^n
<p>Hello World!</p> Ep-{Ew{T_=
</BODY> gzqx{ ]
</HTML> z7V74hRPX
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hU=n>g>nx
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INTERCAL b}'XDw
PLEASE DO ,1 <- #13 kOR5'rh
DO ,1 SUB #1 <- #238 lO},fM2j
DO ,1 SUB #2 <- #112 J \U}U'qP
DO ,1 SUB #3 <- #112 Q`ERI5b6
DO ,1 SUB #4 <- #0 U085qKyCw
DO ,1 SUB #5 <- #64 g2%&/zq/
DO ,1 SUB #6 <- #238 W j2]1A
DO ,1 SUB #7 <- #26 (!kOM% 3{
DO ,1 SUB #8 <- #248 [B3qZ"
DO ,1 SUB #9 <- #168 !J
")TP=
DO ,1 SUB #10 <- #24 `oN~
DO ,1 SUB #11 <- #16 N}x\Ll
DO ,1 SUB #12 <- #158 vtw{
A}
DO ,1 SUB #13 <- #52 [O*5\&6
PLEASE READ OUT ,1 c;DWSgIw
PLEASE GIVE UP NYtp&[s2-
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5]cmDk
Java J$6tCFD
public class Hello GKdQ
{ LY}%|w
public static void main(String[] args) {>[,i`)
{ 2ILMf?}
System.out.println("Hello, world!"); H@0i}!U64
} B$A`-
} O o9 ePw7
v-2_#
=*0<.Lo':
JSP ^n#6CW*n
<% ]S+NH[g+
out.print("Hello, world!"); uPbvN[~t
%> BeZr5I"`}
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IB#L5yN r
MIXAL bqpy@WiI S
TERM EQU 19 the MIX console device number EjLj5Z/q
ORIG 1000 start address 1HYrJb,d
START OUT MSG(TERM) output data at address MSG b||
c^f
HLT halt execution (xw) pR
MSG ALF "MIXAL" +{Yd\{9
ALF " HELL" _r+2o-ZR
ALF "O WOR" F9(*MP|
ALF "LD " !-1UJqO
END START end of the program
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Nuva Z
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<..直接输出..> -[A4B)
Hello, world! b
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<..或者..> A?[06R5E#
yT<6b)&*&
<. KSsv~!3Yf
// 不带换行 +\~.cP7[
? "Hello, world!" . 7WNd/WG
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// 或者 H4DM,.04
n[$b k_S
// 带换行 eZpyDw C{
?? 'Hello, world!' c*LB=;npI
.> fLM5L_S}Y
:l~^un|<2Y
1#rcxUSi
OCaml tKtKW5n~
let main () = R5PXX&Q
print_endline "Hello world!";; +u+|9@
8 w-2Q
2JY]$$K7
Pascal cm`Jr#kl{
program Hello; /SDN7M]m!
begin fyYHwG
writeln('Hello, world!'); tf?syk+jB7
end. SMX70T!'9
(bpO>4(S
D c5tRO
Perl FKhmg&+>
#!/usr/local/bin/perl hp ?4w) ,
print "Hello, world!\n"; 6&jW.G8/
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Sg#$
B#g
PHP +XL^dzN[|$
<?php aMaICM
print("Hello, world!"); KZ8Hp=s
?> SP}!v5.
k@[\C`P
H&$L1CrdL
Pike X/< zxM
#!/usr/local/bin/pike T!![7Rs
int main() Bi}uL)~rD
{ B49:
R>
write("Hello, world!\n"); 9]u=b\fzZ
return 0; &6ymGo
} G;RFY!o
].AAHu5
l', +l{\Z
PL/I 6}z-X*
Test: procedure options(main); [)efh9P*
declare My_String char(20) varying initialize('Hello, world!'); ^/'zU,
put skip list(My_String); !U6q;'
)-
end Test; qr$h51C&
YK xkO
TH[xSg
Prolog 4F[4H\>'
goal "2l$}G
write("hello,world!"). +(Q$GO%
hQWo ]WF(J
<8J_[
S
Python ;?{[vLHDL
#!/usr/local/bin/python mu*RXLai
print "Hello, world!" ,J&\)
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:L+%5Jq
"Snt~:W>
REXX yM2}JsC
say "Hello, world!" 4JO[yN
,f@\Fs~n
`B$rr4_
Ruby ;5p;i8m
#!/usr/bin/ruby ;F;Vm$
print "Hello, world!\n" oQiRjDLx
-=WQed}
R wTzS;
Scheme i5 0c N<o
(display "Hello, world!") Y|!m
(newline) ;#?G2AAv
dQs>=(|t
C=Tq/L w
sed (需要至少一行输入) j Gp&P
sed -ne '1s/.*/Hello, world!/p' HcQ)XJPK
KvH t`
[G",Yky
Smalltalk v[<x>?iD_
Transcript show: 'Hello, world!' %M,^)lRP
oZ_,WwnE
P84=.*>
SNOBOL o1Krp '*
OUTPUT = "Hello, world!" YTD&swk
END |ju+{+
cTBUj
!l-Q.=yw
SQL =o:1Rc7J
create table MESSAGE (TEXT char(15)); H+
7HD|GE
insert into MESSAGE (TEXT) values ('Hello, world!'); x=03WQ8
select TEXT from MESSAGE; PjP6^"
drop table MESSAGE; " ?Ux\)*
25j?0P"&
t)5.m}
Tcl PJO.^OsM
#!/usr/local/bin/tcl T/PmT:Qg`
puts "Hello, world!" }9V0Cu1
Px3I+VP
P(UY}oU
TScript >K<cc#Aa
? "Hello, world!" UX'q64F!
e'sS",o*
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Turing +Ks 3
put "Hello, world!" _<GXR
?
PXG@]$~3
TBIr^n>Z<k
UNIX-style shell 5,pEJ>dDD3
程序中的/bin/sh可改为您使用的shell 'ka}x~EF
&;bey4_J
#!/bin/sh !"ir}Y%
echo 'Hello, world!' CTe!jMZ=
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oE_*hp+
GUI 2tg 07
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Delphi }KYOde@
program HelloWorld; _f~$iY
uses xSqr=^
Dialogs; KF1Zy;
begin G?, "AA;
ShowMessage('Hello, World!'); XgyLlp;,O
end. b%KcS&-6
Cd]g+R}j
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Nuva "sIww
<. =4sx(<
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) LqXVi80
.> +tlBOl$
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)H`V\H[0P
Visual Basic r/@ Wn
MsgBox "Hello, world!" W56VA>ia
'或者 yVQW|D0,j
Print "Hello, world!" %QQ 2u$
`EfFyhG$
Q3Z?Z;2aR
Visual FoxPro LqO=wK~
? "Hello, world!" f~,Ml*Zp
>Q'*~S@v3
L&rtN@5;
X11 :0ltq><?
用一个程序 sIbPMu`&U
K}MlC}oIt
xmessage 'Hello, world!' t3g+>U_m
acar-11_o/
用C++和gtkmm 2 <CJy3<$u
GIT"J}b}
#include <iostream> EiaP1o
#include <gtkmm/main.h> 'r(g5H1}gi
#include <gtkmm/button.h> e2BC2K0
#include <gtkmm/window.h>
/fLm
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using namespace std; Y@<jvH1
,`OQAJ)>
class HelloWorld : public Gtk::Window wW8[t8%43
{ MslgQmlM
public: @v:Eh
HelloWorld(); `KE]RTq
virtual ~HelloWorld(); )Z|G6H`c3
protected: X 5X D1[
Gtk::Button m_button; X h}D_c
virtual void on_button_clicked(); KK5_;<
}; [c lwmx
@H3x51PT(m
HelloWorld::HelloWorld() : m_button("Hello, world!") -rjQ^ze
{ a1Q%Gn@R
set_border_width(10); 4*9t:D|}
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); (+cZP&o
add(m_button); x]`@%8Sm
m_button.show(); ;<