“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。 Y"dUxv1Ap
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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》。 aHR&6zj4
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以下是用不同语言写成的Hello World程序的几个例子: M8p6f)l3
Ada _q7mYc
with Ada.Text_Io; use Ada.Text_Io; _a`J>~$
procedure Hello is {/E_l
begin 94CHxv
Put_Line ("Hello, world!"); 3 J!J#
end Hello; c ?(X(FQ
s`63
y&Z[
r]<?,xx[
汇编语言 (G<fvl!~
$(=0J*ND"
x86 CPU,DOS,TASM
q0y#Y
MODEL SMALL 7q;wj~
IDEAL &]_2tN=S$
STACK 100H $ctpg9 7
|K,[[D<R
DATASEG |iLf;8_:
HW DB 'Hello, world!$' qQ
T^d
x3L0;:Fx8P
CODESEG "t!_bma
MOV AX, @data :5,
k64'D
MOV DS, AX wk[4Qsk<
MOV DX, OFFSET HW WLkfo6Nw
MOV AH, 09H jM'(Qa
INT 21H >= VCKN2'j
MOV AX, 4C00H sG K7Uy
INT 21H ,GTIpPj
END ! a!^'2
tB/'3#o
2Cgq&\wS
x86 CPU,GNU/Linux,NASM >tQ$V<YB
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). fB"It~ p
;Enter this into "hello.asm" then type: CjT]!D)s
;"nasm -f elf hello.asm" W'3~vQF
;"ld hello.o -o hello" I\WBPI
;"./hello" "IuPg=|#
7:$zSj#y
section .data ;data section declaration &wea]./B
msg db 'Hello World!',0AH FwaYp\z
len equ $-msg ;string length gWLhO|y
t=BXuFiu
section .text ;code section declaration j3&tXZ;F
global _start ;entry point (start of execution) Qt(4N!j
_start: mov edx,len ;string length W)p?cK`
mov ecx,msg ;string start xI(t!aYp
mov ebx,1 ;file handle: stdout ,WgEl4
mov eax,4 ;sys_write -![>aqWmj1
int 80h ;kernel system call rcU*6`IWA
E*G{V j
mov ebx,0 ;return value XZH\HK)K-]
mov eax,1 ;sys_exit GS&iSjw
int 80h ;kernel system call gBd@4{y6C.
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(>M?
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x86 CPU,Windows,MASM32 ("txj[v-/
.386 K bM1b
.model flat,stdcall 56 [+;*
option casemap:none RElIWqgY
;Include 文件定义 .X;DI<K
include windows.inc c#<p44>U
include user32.inc (y!V0iy]
includelib user32.lib :=e"D;5
include kernel32.inc }
3JOC!;;
includelib kernel32.lib vHM,_I{
;数据段 cu )w6!f
.data cVuT|b^
szCaption db 'A MessageBox!',0 #CTeZ/g
szText db 'Hello,world!',0 2e|m3
;代码段 AZf$XHP2
.code `FHKQS5
start: ?*dt JL
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK bD4aSubN
invoke ExitProcess,NULL .Hm1ispq
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> [I2vg<my
end start tr@)zM
GB
Qa@]
sWcM
9*;OHoD h
AWK kJk6lPSqi7
BEGIN { print "Hello, world!" } b/6!>qMMk%
gH:+$FA
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BASIC &\L\n}i-
传统版BASIC(例如GWBASIC): Y0xn}:%K
6)[gF1
10 PRINT "Hello, world!" <gu>06
20 END :)DvZx HE@
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或在提示符输入: RhD
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?"Hello, world!":END xM2UwTpW
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现代版BASIC(例如Quick BASIC): V|j{#;
^k5# {?I
Print "Hello, world!" W,bu=2K6
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以下的语句在Quick BASIC中同样有效: H{I,m-
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? "Hello,world!" ]:}x 4O#
i<-a-Z+^
Hh`HMa'q
BCPL `9mc+
GET "LIBHDR" OCv,EZ
[Y-3C47
LET START () BE DSL3+%KF#
$( (o518fmR
WRITES ("Hello, world!*N") =i:,")W7=
$) gVI T6"/
yII+#?D
sOhKMz
Befunge U$Od)
"!dlrow olleH">v L|Bjw3K&D
, EnP>
^_@ >9,:i)m_
2U&+K2
}.r)
Brainfuck i0'g$
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< oq[r+E-]$@
+++++++++++++++.>.+++.------.--------.>+.>. {Lugdf'
pMV ?vH
,*Wp$
C zvR;Tl6]
#include <stdio.h> P1dFoQz
9;fs'R
int main(void) V0!kvIv
{ hp$1c
printf("Hello, world!\n"); 8u7QF4
Id
return 0; w}0rDWuR[
} 'tJxADK
2[i(XG{/
Qq3>Xv <
C++ R{UZCFZ
#include <iostream> 5#mHWBGd7
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,3_
int main() IAMtMO^L
{ uTNy{RBD+
std::cout << "Hello, world!" << std::endl; :
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return 0; lm|s%
} uvJmEBL:
TecWv@.
N5 mhs#
C++/CLI Mo]aB:a
int main() '#lc?Y(pJ2
{ zICAV -&
System::Console::WriteLine("Hello, world!"); th}&|Y)T2
} jJAr #|
H/l,;/q]b
+>Pq]{Uf1j
C# (C Sharp) X0 ]Se(
class HelloWorldApp SK5__Ix
{ 7>f)pfLM
public static void Main() qRXHaQi@9
{ 3`Dyrj#!
System.Console.WriteLine("Hello, world!"); oxLO[js
} ,.AXQ#~&`
} %'eaW
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zC`ediyu
COBOL WnhH]WY
IDENTIFICATION DIVISION. Ct]? /
PROGRAM-ID. HELLO-WORLD. k#G+<7c<
GQ}R xu]
ENVIRONMENT DIVISION. cFHSMRB|P
Up*6K =Tny
DATA DIVISION. n<Ki.;-ZE
W?0u_F
PROCEDURE DIVISION. J]|S0JC`
DISPLAY "Hello, world!". 5uU{!JuSa
STOP RUN. |;R-q8
)2J#pz?.
caZEZk#r;
Common Lisp G{0f*
cH)
(format t "Hello world!~%") ;Bat--K7+
.jl^"{@6
OT#foP
DOS批处理 Tj=@5lj0
@echo off 5;A=8bryU
echo "Hello, world!" iOiXo6YE
,.V=y%
*oAnG:J+M
Eiffel 1~[GGl
class HELLO_WORLD N|w;wF!3
5K00z?kD2V
creation Y^gIvX
make QY$4D;M`g6
feature fa,;Sw
make is uKo4nXVtp
local MJ.Kor
io:BASIC_IO t}gK)"g
do 6+Y@dJnPT
!!io ]CgZt'h{
io.put_string("%N Hello, world!") uN6xOq/
end -- make M B,Z4 ^
end -- class HELLO_WORLD %Gm4,+8P3o
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y|YhDO
Erlang N}q*(r!q<
-module(hello). I2C1mV
-export([hello_world/0]). E /V`NqC
e_Q(l'f
hello_world() -> io:fwrite("Hello, World!\n"). rH[Eh8j,
#DcK{|ty
g")pvK[e
Forth op|x~Thf
." Hello, world!" CR LdyE*u_
w4Ku1G#jC
'Y5=A!*@tf
Fortran ~T&X#i
WRITE(*,10) k?=_p6>
10 FORMAT('Hello, World!') e{d$OzT) V
STOP cS"PIelR
END 66cPoG
I)4NCjcCw
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HTML a4N8zDS
<HTML> I^S{V^Ty
<HEAD> [
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<TITLE> Hello World! </TITLE> e6^iakSd.L
</HEAD> sg,9{R ^
<BODY> /f
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3
<p>Hello World!</p> P87qUC
</BODY> .gd'<l
</HTML> b=Y3O
x<{)xP+|
xsXf_gGu
HQ9+ n\H.NL)
H y?{YQ)fj
7(KVA1P66
uJ/&!q<3
INTERCAL '>r"+X^W
PLEASE DO ,1 <- #13 !u|s|6{\
DO ,1 SUB #1 <- #238 %R1$M318
DO ,1 SUB #2 <- #112 6w^Fee`>]
DO ,1 SUB #3 <- #112 6o]X.plr
DO ,1 SUB #4 <- #0 /<oBgFMoJ
DO ,1 SUB #5 <- #64
|HB
DO ,1 SUB #6 <- #238 > v ]-B"Y
DO ,1 SUB #7 <- #26 OAtn.LU
DO ,1 SUB #8 <- #248 JD$;6Jv3P
DO ,1 SUB #9 <- #168 D[}qhDlX
DO ,1 SUB #10 <- #24 Oe}6jcb6&
DO ,1 SUB #11 <- #16 *1
l"|=_&s
DO ,1 SUB #12 <- #158 5R7DD 5c[
DO ,1 SUB #13 <- #52 w
B[H&
PLEASE READ OUT ,1 C8.MoFfhe
PLEASE GIVE UP z8hAZ?r1`
{H%1sI
-dsE9)&8DX
Java ?AJE*=b
public class Hello "+:IA|1wD
{ "#a,R^J
public static void main(String[] args) h ?%]uFJC
{ 9 ~$'?
System.out.println("Hello, world!"); 5 MD=o7O^
} lGtTZcg
} \4|o5, +(@
kI>PaZ`i)
|VD}:
JSP 5Mq7l$]h$
<% w(Hio-l=
out.print("Hello, world!"); $'>h7].
%> E<XrXxS1O
APBe76'3)
\zPcnDB
MIXAL )j>BvO
TERM EQU 19 the MIX console device number 1#<KZN =$
ORIG 1000 start address D/-$~u_o
START OUT MSG(TERM) output data at address MSG q
k+(Ccl
HLT halt execution R3=]Av46
MSG ALF "MIXAL" bR}{xHe
ALF " HELL" =Wj{J.7mf]
ALF "O WOR" @"=wn:O+
ALF "LD " IDpW5Dc
END START end of the program |}>;wZ[7
9xm' 0 '
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Nuva `upxM0gc
<..直接输出..> 5<y pK`Kq
Hello, world! #U j~F
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<..或者..> ZBAtRs
cc^ [u+
<. =icynW^Fr
// 不带换行 b];p/V#
<
? "Hello, world!" B:Xmc,|,
]FLi^}ct
// 或者 %!i|"FNc
^1^muc[
// 带换行 1k8zAtuj
?? 'Hello, world!' F};G&
.> a5AD$bP
BL^8gtdn
JBKCa 3
OCaml <8Zm}-U
let main () = Z1gZn)7
print_endline "Hello world!";; |4@su"OA
FX#fh 2
WTcrfs)T
Pascal n(MVm-H
program Hello; (haYY]W\
begin ?Hd/!I&
writeln('Hello, world!'); 9a*}&fL[
end. D^5bzZk
N
[*k25N
O*ql!9}E{
Perl ]EhW
#!/usr/local/bin/perl 5k^UZw
print "Hello, world!\n";
{|kEGq~aE
[;F%6MPK^
c9eLNVM
PHP Nn_n@K
<?php nKzS2u=:Y
print("Hello, world!"); BSGC.>$s
?> & bwhD.:=
5Cp6$V|/kv
Jmp%%^
Pike k yFq
#!/usr/local/bin/pike : ;nvqb d
int main() cBO.96ZHE
{ VR @V3 ~
write("Hello, world!\n"); &C.{7ZNt
return 0; nYcj6?
} 02lI-xHe
#]iSh(|8
/7nircXj@
PL/I f+/AD
Test: procedure options(main); R*l#[D5A
declare My_String char(20) varying initialize('Hello, world!'); W]]@pbG"H\
put skip list(My_String); JYt)4mOo
end Test; }'y=JV>l
0.9%m7.m
]>33sb
S6
Prolog =peodj^
goal atW=xn
write("hello,world!"). fq@r6\TI
sUc_)
{W[OjPC~F
Python <}@*i
#!/usr/local/bin/python <Be:fnPX7
print "Hello, world!" R d?8LLz
8gQg#^,(t
(9#$za>
REXX E^)>9f7
say "Hello, world!" 3KyIBrdi?
i;u#<y{E
ig Q,ZY1
Ruby }=dUASL
#!/usr/bin/ruby ,G q?
print "Hello, world!\n" ;.O#|Z[
w)#Lu/
lo1<t<w`
Scheme 'F\@KE-d
(display "Hello, world!") ^V1 .Y
(newline) DLigpid
B_gzpS]
kM0TQX)$m
sed (需要至少一行输入) mW/6FC
sed -ne '1s/.*/Hello, world!/p' N(6Q`zs
P}2i[m.*,
I%^Bl:M
Smalltalk G^G= .9O
Transcript show: 'Hello, world!' p;y\%i_
'7oWN,-
GOKca%DT=
SNOBOL ]^e4coC
OUTPUT = "Hello, world!" mMNT.a
END ?M}W;Z
#j+0jFu
0^0Q0A
SQL \>DMN #
create table MESSAGE (TEXT char(15)); 0r=KY@D
insert into MESSAGE (TEXT) values ('Hello, world!'); O`;e^PhN
select TEXT from MESSAGE; sp-){k
drop table MESSAGE; G1=/G
r1jsw j%7
w1Xe9'$Qb
Tcl qg`8f?
#!/usr/local/bin/tcl !_No\O
puts "Hello, world!" <>Nq]WqA
F>H5 ww9E
N!{waPbPi
TScript RT`jWWh*Lo
? "Hello, world!" 8mmHefZ}2!
z#( `H6n:
fz[-pJ5[
Turing Ag82tDL[u
put "Hello, world!" ,rU>)X
ndXUR4
DNyU]+\L[l
UNIX-style shell ta*6xpz-\Q
程序中的/bin/sh可改为您使用的shell M>yt\qbkA
'QP~uK
#!/bin/sh i?+>,r@\p
echo 'Hello, world!' O-N@HZC
wn&5Ul9Elb
A7hWAq
GUI vJ a?5Jr
VQV%1f
Delphi <y!(X"n`
program HelloWorld; :&'[#%h8
uses 8%,u~ELA
Dialogs; mC,: .d
begin Lc?q0x^s
ShowMessage('Hello, World!'); ,WKWin
end. /hC'-6:]^
^h5h kIx0
~snYf7
Nuva o6@`aU
<. Yo^9Y@WDW
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) I&s!} $cD
.> b;~?a#Z}
.}4^b\
U'Mxf'q
Visual Basic {*NM~yQ
MsgBox "Hello, world!" 7K`Z<v&*
'或者 dSkx*#FEE
Print "Hello, world!" ebTwU]Nb
iYR`|PJi
w dpd`
Visual FoxPro /f Ui2[y
? "Hello, world!" '0tNo.8K
5W4Tp% Lda
a*3h|b<
X11 }
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用一个程序 BHrNDpv
hha!uD~(
xmessage 'Hello, world!' U3rpmml
"(NJ{J#A
用C++和gtkmm 2 @Z[XV"w|
V=-hqo(
#include <iostream> F*{1, gb
#include <gtkmm/main.h> _WB*ArR
#include <gtkmm/button.h> 71wtO
#include <gtkmm/window.h> u[b0MNE~
using namespace std; =t!$72g\
sNbCOTow
class HelloWorld : public Gtk::Window
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{ !`qw"i
public: =Dc9|WuHN
HelloWorld(); mJFFst,
virtual ~HelloWorld(); G}NT[
protected: Z0!yTM/C
Gtk::Button m_button; 3+tr_psH
virtual void on_button_clicked(); s{@3G8
}; LPK[^
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HelloWorld::HelloWorld() : m_button("Hello, world!") r;'Vy0?AL
{ dePI&z:
set_border_width(10); p5?8E$VHV
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); wpS $-
add(m_button); #1VejeTi
m_button.show(); }&