“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。 ^E70$yB^
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 9xQ|Uad+%
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以下是用不同语言写成的Hello World程序的几个例子: S7+>Mk
Ada y\FQt];z)
with Ada.Text_Io; use Ada.Text_Io; u$\.aWol
procedure Hello is #{6VdWZ
begin xWxHi6U(
Put_Line ("Hello, world!"); *~PB
end Hello; LIDi0jbrq
f(Xin3#'
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汇编语言 Y=XDN:
sp\6-*F
x86 CPU,DOS,TASM /@`"&@W'
MODEL SMALL G8repY
IDEAL x6/u+Urn
STACK 100H Fp.eucRxP
o,i_py
DATASEG fbApE
HW DB 'Hello, world!$' YEv\!%B
GgpE"M?
CODESEG fzJiW@-T
MOV AX, @data 59.$;Ip;g
MOV DS, AX ]3v)3Wp
MOV DX, OFFSET HW qz`-?,pF
MOV AH, 09H LQF;T7VKS)
INT 21H v[$e{ Dz(
MOV AX, 4C00H -RP{viGWK
INT 21H W? G4>zA
END J_)F/S!T
!XTzsN
K3zY-yIco
x86 CPU,GNU/Linux,NASM 3~sV-
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). }9ulHiR
;Enter this into "hello.asm" then type: ) 8xbc&M
;"nasm -f elf hello.asm" c]*yo
;"ld hello.o -o hello" [r2V+b.C
;"./hello" >l0Qd1
8(? &=>@
section .data ;data section declaration Jq^[^
msg db 'Hello World!',0AH M(>74(}]
len equ $-msg ;string length (6fD5XtS
-c>3|bo
section .text ;code section declaration Sstz_t
global _start ;entry point (start of execution) BsA4/Bf
_start: mov edx,len ;string length Bl>m`/\1i
mov ecx,msg ;string start Wps^wY
mov ebx,1 ;file handle: stdout DcxT6[
mov eax,4 ;sys_write 5%TSUU+<I
int 80h ;kernel system call %R5- 6
e/4C` J-
mov ebx,0 ;return value myo4`oH
mov eax,1 ;sys_exit nzbVI
int 80h ;kernel system call BD"Dzq
P,8TO-e7
&DW !$b
x86 CPU,Windows,MASM32 _#~D{91
j:
.386 -']Idn6
.model flat,stdcall 3ko
h!q+
option casemap:none 5B%KiE&p
;Include 文件定义 xZ'C(~t
include windows.inc 3=wcA/"!
include user32.inc [Vbdsu9
includelib user32.lib \>\ERVEd
include kernel32.inc z&9ljQ
iF
includelib kernel32.lib s58dHnj5+
;数据段 hrX/,D -c
.data j~bNH~3
szCaption db 'A MessageBox!',0 `{ Ox=+]M
szText db 'Hello,world!',0 c{kpgN
;代码段 N(i.E5&9
.code C#[P<= v
start: vAP1PQX;
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK b|V<Kp
invoke ExitProcess,NULL &am<_Tn*3
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> fx>QP?Z
end start 1TEKq#t;y
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AWK ShQ! '[J
BEGIN { print "Hello, world!" } TQ![
Lt~&K$t7~
#)L}{mHLM-
BASIC E\}A<r
传统版BASIC(例如GWBASIC): _*z^PkH
+L=Xc^
10 PRINT "Hello, world!" E
6#/@C,
20 END \hBzQ%0
y.(<
或在提示符输入: gDJ} <^
me@`;Q3
?"Hello, world!":END SP<(24zdd
mY=sh{ir
现代版BASIC(例如Quick BASIC): *|q{(KX
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Print "Hello, world!" j 0LZ )V
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以下的语句在Quick BASIC中同样有效: k"=*'
2asRJ97qES
? "Hello,world!" O:'qwJ#~
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p/eaO{6 6
BCPL ZG +FX:v
GET "LIBHDR" P@bPdw!JA
~[F7M{LS
LET START () BE K20Hh7cVJ
$( h}tC+_"D
WRITES ("Hello, world!*N") {ZdF6~+H(!
$) R:l &2
\(`2 @
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Befunge >tkz%;6
"!dlrow olleH">v Sz|kXk6&9
, p5"pQeS
^_@ .p Mwa
:W>PKW`^
=i}lh}(
Brainfuck 2xUgM}e
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< "3 ++S
+++++++++++++++.>.+++.------.--------.>+.>. KL!cPnAUu
\HrtPm`e
n5oX 51J
C -cJ,rrN_9
#include <stdio.h> \
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Ttl
m&d+C
int main(void) ePq (.o
{ t>a D;|Y
printf("Hello, world!\n"); }l} _'FmQ
return 0; TC2%n\GH*
} y5KeUMcu
LRaO}-<b
UlNiH
C++ <5Ll<0
#include <iostream> s1sn,?
`gCJ[
int main() =[:E
{ `<P:ly.
std::cout << "Hello, world!" << std::endl; FjizPg/|!
return 0; @@-TW`G7
} ] ZP!y
2 ( I4h[
-da: j-_
C++/CLI IMM+g]#e
int main() @d^DU5ats>
{ RO3q!+a$/
System::Console::WriteLine("Hello, world!"); cL%"AVsj
>
} >hSu1s:
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E
?bqEW(
C# (C Sharp) l{]KA4
class HelloWorldApp G=gU|& (
{ }/\`'LQ
public static void Main() x)Zm5&"Gg
{ p{v*/<.;
System.Console.WriteLine("Hello, world!"); 3P>1-=
} Dk$<fMS,7c
} @vib54G
3*\Q]|SI!
r|]YS6
COBOL WrRY3X
IDENTIFICATION DIVISION. .v}|Tp&k
PROGRAM-ID. HELLO-WORLD. {jwLVKT$
Zv@
Fr9m
ENVIRONMENT DIVISION. N5`z S79W
%CnNu
DATA DIVISION. Qv'x+GVW]
&tf(vU;,'
PROCEDURE DIVISION. bYpeI(zK
DISPLAY "Hello, world!". ^~vM*.j~j
STOP RUN. PJ?C[+&
SO STtuT
Ahba1\,N$
Common Lisp 9LBZMQ
(format t "Hello world!~%") Dm}M8`|X
zkqn>
F#)bGi
DOS批处理 ~#P]NWW%.
@echo off _Yp~Oj
echo "Hello, world!" ^A=tk!C
hosY`"X
]jiVe_ OS<
Eiffel Zo^]y'
class HELLO_WORLD ]auqf
!\BM
creation D:IG;Rsc
make M=&,+#z<V
feature f)a0 !U 44
make is KZ#\ >
local @- xvdntx
io:BASIC_IO AOKC1iD%Y
do \G)F*
!!io 9iM%kY#)W
io.put_string("%N Hello, world!") h~CLJoK<
end -- make .,#H]?Wil
end -- class HELLO_WORLD j`$$BVZ
.L"IG=Uh#
$)X8'1%6
Erlang u3,O)[qV
-module(hello). Uey'c1
-export([hello_world/0]). HOCj* O4
L@zhbWY
hello_world() -> io:fwrite("Hello, World!\n"). E]m?R 4
h7T),UL
D `V.gV]
Forth u,d5/`E
." Hello, world!" CR UuF(n$B
y:Of~
]9@
Z_S{$D
Fortran Gky^S#
WRITE(*,10) nu~]9~)I
10 FORMAT('Hello, World!') :-Py0{s
STOP dVHbIx
END cL03V? }
~
rMZuiRz*
9^8OIv?m8
HTML )i[Vq|n
<HTML> mK"s*tD
<HEAD> to,\n"$~!
<TITLE> Hello World! </TITLE> 5E~^-wX
</HEAD> Xxd]j]
<BODY> xh9$ZavB*
<p>Hello World!</p> >zL5*:G
</BODY> z,^~H
</HTML> )
< U9
)78T+7Kq
]cmX f
HQ9+ %+Z*-iX
H g|$;jQ\_
\M._x"
3/Z>W|w#w
INTERCAL BL_0@<1X
PLEASE DO ,1 <- #13 /T(9:1/G
DO ,1 SUB #1 <- #238 > l0H)W
DO ,1 SUB #2 <- #112 2u!&Te(!9
DO ,1 SUB #3 <- #112 $of2 lA
DO ,1 SUB #4 <- #0 gM=:80
DO ,1 SUB #5 <- #64 m9i/rK_
DO ,1 SUB #6 <- #238
#C?M-
DO ,1 SUB #7 <- #26 hKWWN`;b !
DO ,1 SUB #8 <- #248 yrfV&C%=n
DO ,1 SUB #9 <- #168 r@Jy*2[-Jq
DO ,1 SUB #10 <- #24 %Pt){9b
DO ,1 SUB #11 <- #16 /}L2LMIm
DO ,1 SUB #12 <- #158 fHH
DO ,1 SUB #13 <- #52 Rc1k_fZ}
PLEASE READ OUT ,1 xb9+- {<J
PLEASE GIVE UP S 593wfc
,R<9yEWm
IVxZ.5:L$
Java Ur>1eN%9'
public class Hello 2xX:Q'\2
{ 73Jm
public static void main(String[] args) fCJjFL:
{ #+AQ:+
System.out.println("Hello, world!"); Q1?*+]
} y*-_
} fPPP|
SZHgXl3:
YE{t?Y\5
JSP *`Vm ncv3
<% >,]8iMh
out.print("Hello, world!"); }58MDpOF1
%> \I523$a
)S2yU<6oOt
?&~q^t?u
MIXAL xSK#ovH2
TERM EQU 19 the MIX console device number W [K.|8ho
ORIG 1000 start address d,JDfG)
START OUT MSG(TERM) output data at address MSG @&WHX#
HLT halt execution Jut&J]{h
MSG ALF "MIXAL" F!0iM)1o
ALF " HELL" ` K{k0_{
ALF "O WOR" ';/J-l/SE
ALF "LD " /kkUEo+
END START end of the program /YF:WKr2
c:9n8skE7
Dpw*m.f
Nuva 'EAskA]*
<..直接输出..> Kmx^\vDs
Hello, world! U{hu7
_J W|3q
<..或者..> er)I ".|
B<m0YD?>~>
<. #m{*]mY@
// 不带换行 <TRhn z
? "Hello, world!" G,|!&=Pe|E
o1$u;}^ |
// 或者 yivu|q
&.*UVc2+Y
// 带换行 Z}dK6h5+'
?? 'Hello, world!' e:9EP,
.> F1L[3D^-
!!^z6jpvn
4Qfsxg
OCaml PLc5m5
let main () = D@*<O=_D(
print_endline "Hello world!";; f;zNNx<
;
m3lz#Pm'0
.=#jdc/
Pascal @>(KEjQTz
program Hello; &9#m]Mz
begin - Fbp!*.
u
writeln('Hello, world!'); YoKyiO!
end. +)j ll#}?
1" cv5U
1w^wa_qx
Perl &HM-UC|
#!/usr/local/bin/perl qM(}|fMbN
print "Hello, world!\n"; =L" 0]4K
PFh ^Z L
/^BC
Qaj
PHP =79R;|5
<?php Z,38eQpM
print("Hello, world!"); JF 4A
?> -Qn7+?P
A>yU0\A
UUJQc~=
Pike !=,4tg`
#!/usr/local/bin/pike XZM3zlg*
int main() :-k|jt
{ :;7I_tb
write("Hello, world!\n"); fo@^=-4A-
return 0; [s{!
} b]+F/@h~]
Y$r78h=4
%x$U(I}
PL/I y~
=H`PAE
Test: procedure options(main); `um,S
declare My_String char(20) varying initialize('Hello, world!'); ssi7)0
put skip list(My_String); KT(Z
#$
end Test; @yaFN>w
kW g.-$pp
3`HK^((o
Prolog WD[eoi
goal my.EvN
write("hello,world!"). #dA$k+3
)?*YrWO{
!.]JiT'o
Python 7z{wYCw
#!/usr/local/bin/python q!5:M\
print "Hello, world!" .gRj^pu
_8VP'S=
A IP~A]T
REXX .w9LJ
say "Hello, world!" ^"/^)Lb!@M
zN4OrG0
EiW|+@1
Ruby /fr> Fd
#!/usr/bin/ruby `C+<!)2
print "Hello, world!\n" kz"uTJK
n{;j
)u)=@@k21
Scheme V)`2Kw
(display "Hello, world!") IY`p7 )#i
(newline) pN%&`]Wev
%iN>4;T8
bmfM_oz
sed (需要至少一行输入) BX@Iq
sed -ne '1s/.*/Hello, world!/p' Tu#< {'1$
W(s4R,j
|^pev2g
Smalltalk ]k0
jmE
Transcript show: 'Hello, world!' j9+$hu#a
_!\d?]Ya
+2~kHrv
SNOBOL ,kN;d}bg
OUTPUT = "Hello, world!" e#(Ck{e
END /d8o*m'bu!
!~@GIr
ff"wg\O4
SQL %@/^UE:
create table MESSAGE (TEXT char(15)); J-F".6i5
insert into MESSAGE (TEXT) values ('Hello, world!'); G 6sK3K
select TEXT from MESSAGE; f!Q\M1t)
drop table MESSAGE; ~Iu! B
Y
ggr
\hB BG8=&
Tcl <uH8Fivb
#!/usr/local/bin/tcl `FP?9R6Y
puts "Hello, world!" WNjwv/
kN1MPd4Yh
kSQ8kU_w+
TScript ':'g!b`/
? "Hello, world!" n_8[bkbi
>:;dNVz
~4S$+*'8
Turing rz?Cn
X.t
put "Hello, world!" *Gbhk8}V'
|?` 5 ~f
}'X=&3m
UNIX-style shell hvd}l8
程序中的/bin/sh可改为您使用的shell Y::0v@&(
lfGyK4:
#!/bin/sh ]n22+]D
echo 'Hello, world!' _"DS?`z6
4`IM[DIG~
y7R#PkQ~
GUI mo0\t#jA
o\AnM5
Delphi L[` l80
program HelloWorld; s[1ao"sZ^
uses lo1Ui`V
Dialogs; OG,P"sv
begin sGvbL-S-f:
ShowMessage('Hello, World!'); \U~4b_aN
end. S:\i
M:
c8qr-x1HG
!liV Y]
Nuva 30Q
p^)K
<. e%4?-{(
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) TOYK'|lwM
.> z3fv}_\z
bf3!|Um
6K $mW
Visual Basic weitDr6
MsgBox "Hello, world!" z`y9<+
'或者 ~xH&"1
Print "Hello, world!" 5sD,gZ7
^
k^y|\UtZ
97}]@xN=
Visual FoxPro ) "#'
? "Hello, world!" [\uR3$j#
!,J#
r
73WSW/^F
X11 H#-3
用一个程序 I-7LT?r
.b:!qUE^
xmessage 'Hello, world!' $|4C]Me (
l?Y^3x}j
用C++和gtkmm 2 `sxfj)s
0bNvmZ$
#include <iostream> bm588UQ
#include <gtkmm/main.h> +Qs]8*^?;
#include <gtkmm/button.h> >%JPgr/
8
#include <gtkmm/window.h> Otn,UoeeB
using namespace std; jXcJ/g(X3
r;cDYg
class HelloWorld : public Gtk::Window )oEVafNsT
{ gU9{~-9}
public: X@nBj;
HelloWorld(); mgxIxusR
virtual ~HelloWorld(); T?9D?u?]
protected: gjF5~
`
Gtk::Button m_button; <J[le=
virtual void on_button_clicked(); ?@V R%z
}; fS]&?$q
:dmE/Tq
HelloWorld::HelloWorld() : m_button("Hello, world!") FR(W.5[
{ ^}3^|jF
set_border_width(10); <QtZ6-;_f
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked));
fF:57*ys
add(m_button); -F[8ZiZ
m_button.show(); ^s,3*cAU
} yr]ja-Y
vccWe7rh
HelloWorld::~HelloWorld() {} LyUn!zV$(
BEZ~<E&0H
void HelloWorld::on_button_clicked() \?bV\/GBR
{
D+8d^-:
cout << "Hello, world!" << endl; w$gvgz
} `s}*
p<R:[rz
int main (int argc, char *argv[]) fBO/0uW
{ r4.6W[|d
Gtk::Main kit(argc, argv); [ X*p
[
HelloWorld helloworld; Re%[t9F&
Gtk::Main::run(helloworld); Gk;YAI
} )W@ug,y
6|97;@94
PN}+LOD<t
Java #mH@ /6,#[
import java.awt.*; :,BAw ,
import java.awt.event.*; 5Iu5N0cn
bT,:eA
public class HelloFrame extends Frame |@ mz@
{ &|SWy
2N
HelloFrame(String title) ]A4=/6`g?b
{ {+N<
9(O
super(title); Z:b?^u4.
} AZ:7_4jz
public void paint(Graphics g) n
`j._G
{ ~{x1/eH
super.paint(g); ~% hdy@
java.awt.Insets ins = this.getInsets(); ` Xc7b
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); D?|D)"?qb
} hW7u#PY
public static void main(String args []) 9O[IR)O~
{ [X(m[u '%
HelloFrame fr = new HelloFrame("Hello"); OY*y<