“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。 t|V0x3X
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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》。 k;I &.H
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以下是用不同语言写成的Hello World程序的几个例子: \hlR]m!C
Ada B6]<G-
with Ada.Text_Io; use Ada.Text_Io; H2;X
procedure Hello is Q$ri=uB;+
begin [3N[i(Wlk
Put_Line ("Hello, world!"); /RT%0!
end Hello; B@O@1?c[
at6149B\)
#`;/KNp 9
汇编语言 WZZ4]cC
1zftrX~v!X
x86 CPU,DOS,TASM -Xz&}QA
MODEL SMALL 5l DFp9
IDEAL RKZ6}q1n
STACK 100H x0Yse:RE^
mM/i^zT
DATASEG |.P/:e9
HW DB 'Hello, world!$' [u
M-0t
}CDk9Xk
CODESEG 4 o(bxs"
MOV AX, @data Q7gY3flg
MOV DS, AX pI;NL
[
MOV DX, OFFSET HW 8i}<
k$S
MOV AH, 09H 6Pn8f
INT 21H p'n4)I2#
MOV AX, 4C00H 4v'A\~ZU
INT 21H la
<npX
END ceT&Y{T
d2S~)/@S
K93p"nHN
x86 CPU,GNU/Linux,NASM ]"~51HQZ
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ZH ,4oF
;Enter this into "hello.asm" then type: w$|l{VI
;"nasm -f elf hello.asm" dQb.BOI)h
;"ld hello.o -o hello" !k&Q 5s:
;"./hello" @}s$]i$|-
7v7G[n
section .data ;data section declaration _:`!DIz~9}
msg db 'Hello World!',0AH CO?Xt+1hR
len equ $-msg ;string length Y+~g\z-]c
x9W(cKB'S
section .text ;code section declaration /mM2M-
global _start ;entry point (start of execution) O
5Nb
_start: mov edx,len ;string length }(XdB:C8
mov ecx,msg ;string start 3WY$WRv
mov ebx,1 ;file handle: stdout 2F`cv1 M
mov eax,4 ;sys_write |=a}iU8
int 80h ;kernel system call J#2!ZQE
3
BxK^?b[E8
mov ebx,0 ;return value N#C1-*[C
mov eax,1 ;sys_exit Q@@v1G\
int 80h ;kernel system call _7T@5\b:;
up'
$ (=~r`O+1
x86 CPU,Windows,MASM32 }!>=|1fY
.386 5S{7En~zUE
.model flat,stdcall X"fh@.
option casemap:none [&?8,Q(
;Include 文件定义 c`*TPqw(B[
include windows.inc ,m=4@ofX
include user32.inc .lgPFr6X
includelib user32.lib *Vw\'%p*
include kernel32.inc f.B>&%JRZ
includelib kernel32.lib 6
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;数据段 A"5z6A4WB
.data $,>@o=)_
szCaption db 'A MessageBox!',0
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szText db 'Hello,world!',0 3q:n'PC)C
;代码段 3]&o*Ib1`_
.code 'CZa3ux
start: X|D!VX>#!
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK l`-bFmpA
invoke ExitProcess,NULL R%D'`*+
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> U$dh1;
end start h].~# *
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AWK P^`duZ{T
BEGIN { print "Hello, world!" } -u!FOD/
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BASIC {O<l[|Ip
传统版BASIC(例如GWBASIC): r7]zQIE
c#IYFTz
10 PRINT "Hello, world!" }N0Qm[R
20 END PQKaqv}N
Cxod[$8
或在提示符输入: @H>@[+S#
2Qp Hvsl_
?"Hello, world!":END hI?sOR!
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现代版BASIC(例如Quick BASIC): 54-#QIx|
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Print "Hello, world!" <GHYt#GIZ+
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以下的语句在Quick BASIC中同样有效: ~_IHaw$hg
<<](XgR(
? "Hello,world!" mkh"Kb*{
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Bd, k3
BCPL 'bld,Do6
GET "LIBHDR" G0u LmW70
CC\*?BKj"
LET START () BE 3p2P=
T
$( iRg7*MQu
WRITES ("Hello, world!*N") kF;DBN
$) ;,i]w"*
i
wxVl)QL
~8"8w(CG*I
Befunge ay "'#[
"!dlrow olleH">v r<F hY
, R8rfM?"W
^_@ \0lnxLA
Ev7J+TmXM
mWR4|1(
Brainfuck o9xlu.QL{c
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 2aJS{[
+++++++++++++++.>.+++.------.--------.>+.>. p ~noM/*2r
:1t~[-h^
O=SkAsim
C ZxV"(\$n
#include <stdio.h> .s+aZwTMT
Y]]}*8
int main(void) E9?phD
{ r]3'74j:
printf("Hello, world!\n"); JpsPNa
return 0; <E\$3Ym9
} H$G0`LP0/a
Mu'8;9_6
ebPgYxVZR
C++ iyj+:t/
#include <iostream> HV6f@
*(PL
_/:
int main() S=_vv)6+4
{ 2z\zh[(w
std::cout << "Hello, world!" << std::endl; \U|ZR
return 0; 3}|'0(hYL
} Og=*R6i
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CPg+f1K
C++/CLI f2,jh}4
int main() >pU:Gr
{ cUTE$/#s
System::Console::WriteLine("Hello, world!"); % QKZT=}
} #2r}?hP/m
GA7}K:LP'k
Y0D}g3`
C# (C Sharp) ynA|}X
class HelloWorldApp atXS-bg*
{ Qs9gTBS;
public static void Main() DW)2 m;
{ DJgTA]$&
System.Console.WriteLine("Hello, world!"); <SI}lQ'i
} OKFtl
} /-#I_>:8'
+}f9
A^q[N
COBOL ~z" =G5|
IDENTIFICATION DIVISION. @6l%,N<fou
PROGRAM-ID. HELLO-WORLD. _`64gS}^
!"8fdSfg
w
ENVIRONMENT DIVISION. gJ2>(k03y
Oft4-4$E
DATA DIVISION. JH:0
L
[s&$l G!
PROCEDURE DIVISION. V+I|1{@i0
DISPLAY "Hello, world!". tv!_e$CR
STOP RUN. a'!zG cT
QtvY v!
4)1s M=u
Common Lisp +la2n(CAK
(format t "Hello world!~%") pv&y91
3e(ehLc4DJ
P(t[
eXe
DOS批处理 K_K5'2dE
@echo off pZtu&R%GU
echo "Hello, world!" e9Nk3Sj]
meOMq1
L[=a/|)TBV
Eiffel 5Hcf;P7
class HELLO_WORLD Q>n|^y6
MNSbtT*^
creation |=&cQRY!p
make %;.;>Y(-
feature cI=(\pC
make is bf9a1<\
local ,_"AT!r
io:BASIC_IO UKM2AZ0lb
do A45A:hqs
!!io Ot]Ru,y->+
io.put_string("%N Hello, world!") `[C!L *#,
end -- make 7EXI6jGJ|
end -- class HELLO_WORLD
)c8j}
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/% kY0 LY
Erlang }g4 M2|
-module(hello). H<^/Ati,|
-export([hello_world/0]). <n(*Xak{a
=2@B&
hello_world() -> io:fwrite("Hello, World!\n"). A'2w>8
a{[x4d,z
Me=CSQqf<
Forth Br`IW
." Hello, world!" CR tO0!5#-VR
,Jd
',>3
W^s
;Bi+Nw
Fortran #lkM=lY'
WRITE(*,10) (&!NC[n,
10 FORMAT('Hello, World!') QcgfBsv96
STOP |jM4E$
END !E T~KL!
[ :zO}r:
K# Jk _"W
HTML F{UP;"8'
<HTML> J9=m]R8T
<HEAD> 3;a<_cE*@
<TITLE> Hello World! </TITLE> /z}~zO
</HEAD> Q:5KZm[ [
<BODY> VO"("7L
<p>Hello World!</p> 1bH;!J
</BODY> D:Zy
</HTML> vBog0KD);s
s M +WkN}{
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HQ9+ z@w Mc
EH
H {c
(!;U
f4BnX(1u
"I
Ql Vi
INTERCAL 'D@-
PLEASE DO ,1 <- #13 O)"gS!,
DO ,1 SUB #1 <- #238 9D4NX<_
DO ,1 SUB #2 <- #112 J&T.(
DO ,1 SUB #3 <- #112 '{(UW.Awo
DO ,1 SUB #4 <- #0 0pbtH8~
DO ,1 SUB #5 <- #64 ;6!Pwb;hY
DO ,1 SUB #6 <- #238 #y%!\1M/:A
DO ,1 SUB #7 <- #26 <A#
l
35
DO ,1 SUB #8 <- #248 KG=h&
DO ,1 SUB #9 <- #168 /RMPS.
d
{
DO ,1 SUB #10 <- #24 Q_t`.jus
DO ,1 SUB #11 <- #16 !tp1:'KG
DO ,1 SUB #12 <- #158 v;0|U:`]
DO ,1 SUB #13 <- #52 5Lf{8UxI
PLEASE READ OUT ,1 TY Qwy*
PLEASE GIVE UP qkC/\![@
W16,Alf:
4fKC 6UR
Java q=#}
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public class Hello RoyPrO [3
{ &SrO)
public static void main(String[] args) El@(mOu|
{ 0)m(;> '70
System.out.println("Hello, world!"); B`
k\ EL'
} phgm0D7
} l~M_S<4n
=J ym%m
CXC`sPY
JSP f{FDuIln
<% =XY\iV1J*
out.print("Hello, world!"); qBCK40
%> Dre]AsgiV
YiPoYlD*n<
m o:D9
MIXAL Uy$)%dYfq5
TERM EQU 19 the MIX console device number p1|f<SF')
ORIG 1000 start address o9H^?Rut
START OUT MSG(TERM) output data at address MSG zA1lca0HK
HLT halt execution -*XCxU'
MSG ALF "MIXAL" nI*v820,
ALF " HELL" rW0FA
ALF "O WOR" 'UYR5Y>
ALF "LD " kbMYMx.[
END START end of the program Oj^,m.R
Q_Gi]M9
r3\cp0P;s
Nuva DuOG {
<..直接输出..> )'4k|@8|
Hello, world! #/Eb*2C`b
z5r$M
<..或者..> TqddOp
y8rm
<. /<]{KI
// 不带换行 ?G-e](]^<
? "Hello, world!" _C`K*u
6Z<
sUU{fNC6|
// 或者 x(eb5YS
ruazOmnn~
// 带换行 mzf+Cu:`v
?? 'Hello, world!' FG)$y[*
.> l@ap]R
oD$J0{K6
.3MIcj=p
OCaml ,Y>Bex_v
let main () = 7IjQi=#:
print_endline "Hello world!";; )-`;1ca)s
>J>b>SU=-
yn/rW$
Pascal %,k][V
program Hello; XGkkB
begin cwL1/DGDB
writeln('Hello, world!'); \
5,MyB2/`
end. ~PHB_cyth
B!\;/Vk
7%{ |
Perl *7wAkljP
#!/usr/local/bin/perl w18y}mS"H
print "Hello, world!\n"; ~mR'Q-hi<
eR3$i)5
ryFxn|4
PHP ti<;7Yb
<?php f0BdXsV#g
print("Hello, world!"); ^J\~XYg{7
?> `ck$t5:6sp
,Uy|5zv
j7)Ao*WN
Pike FTeu~<KpM
#!/usr/local/bin/pike $O*O/iG
int main() xQp|;oW;z
{ T
N!=@Gy
write("Hello, world!\n"); ^*fxR]Y
return 0; lf!FTm7
} C(K; zo*S(
m]cHF.:5
;JRs?1<='
PL/I &CG*)bE
Test: procedure options(main); vVgg0Y2
declare My_String char(20) varying initialize('Hello, world!'); e@ \p0(
put skip list(My_String); QurW/a
end Test; ZPD[5)~
Cj?L@%"
'`Wwt.A
Prolog aN,M64F
goal $e /^u[~:
write("hello,world!"). bk\yCt06y;
VV9_`myN7
-k7X:!>QHC
Python bcZf>:gVf
#!/usr/local/bin/python Zw~+Pb
print "Hello, world!" 6HlePTf8
,yTjU{<"
<fs2fTUeqF
REXX c~v~2DM
say "Hello, world!" ?Oc{bF7
Ck /F9(
2~t[RY
Ruby ]$,UPR/3
#!/usr/bin/ruby UAyC.$!
print "Hello, world!\n" -@Uqz781
q/4 [3h
E~a3r]V/
Scheme YLVPAODY
(display "Hello, world!") Y9`5G%
(newline) DzheoA-+L'
XyOl:>%L!P
]7rj/l$u
sed (需要至少一行输入) 8zBWIi
sed -ne '1s/.*/Hello, world!/p' +/ &_v^sC;
"$}vP<SM
"XT"|KF|D
Smalltalk 1\r|g2Z
:
Transcript show: 'Hello, world!' 9Fr3pRIJ
po}F6m8bX
6AWKLFMV
SNOBOL MW+b;0U`#
OUTPUT = "Hello, world!" A3ZY~s#Iv
END .n=Z:*JqQ
MG?0>^F
}E7:ihy
SQL Q3y;$ "
create table MESSAGE (TEXT char(15)); 3S&U!
insert into MESSAGE (TEXT) values ('Hello, world!'); }>[G5[\
select TEXT from MESSAGE; ^7.h%lSg
drop table MESSAGE; \fjMc }'
dqX;#H}h
X~xd/M=9^
Tcl Jx=hJ-FY
#!/usr/local/bin/tcl 2mq$H_
puts "Hello, world!" g38&P3/
,p9i% i
I=!rbF;Z
TScript l]]l
? "Hello, world!" mP(kcMT"
0n/gd"M
UG<79"\i
Turing 1*
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put "Hello, world!" :F?x)"WoQ+
kZ=s'QRgL
2z@\R@F
UNIX-style shell aceZ3U>W
程序中的/bin/sh可改为您使用的shell C8L'si
+L=*:e\j
#!/bin/sh y8\S}E0
echo 'Hello, world!' @EoZI~
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v<9&B94z
GUI $ F S_E
)=DGdIEt
Delphi Z,X'-7YkU
program HelloWorld; -`Y:~q1
uses ~RD+.A
Dialogs; aSP4a+\*
begin uZi.HG{<)
ShowMessage('Hello, World!'); &,.Y9;
b
end. Ei2%DMN7)
U/NBFc:[y:
{W\T"7H
Nuva SAY
f'[|w
<. 4R8G&8b
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) _pH{yhA
.> T{}fHfM
WX4;l(PL=
y4Er@8I`
Visual Basic vsj3
MsgBox "Hello, world!" RJeSi`19T)
'或者 T,_(?YJW
Print "Hello, world!" /(8a~f&%r
Krs2Gre}
Y+qQI MZ
Visual FoxPro tW;:-
? "Hello, world!" s[Ur~Wvn
j:bgR8%e
a1j.fA
X11 _Zc%z@}
用一个程序 vEG'HOP
fKtV'/X;Q
xmessage 'Hello, world!' c={Ft*N
HWm#t./
用C++和gtkmm 2 2Cg$,#H
4m-I5!=O
#include <iostream> 7}_!
#include <gtkmm/main.h> }!TL2er_
#include <gtkmm/button.h> Bg8#qv
#include <gtkmm/window.h> [= "r<W0
using namespace std; %/.a]j!
,pBh`av
class HelloWorld : public Gtk::Window T$=4O9G
{ [\Qr. 2
public: cubUq5
HelloWorld(); \x>65;
virtual ~HelloWorld(); O3o: qly!
protected: >ulY7~wUv
Gtk::Button m_button; \b*X:3g*
virtual void on_button_clicked(); G9g6.8*&
}; },[;O^Do^{
Pj?Dmk~
HelloWorld::HelloWorld() : m_button("Hello, world!")
st'D
{ gf)t)- E
set_border_width(10); |3?
8)z\n
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); ,DnYtIERo
add(m_button); mceG!@t
m_button.show(); 1t9 .fEmT
} l|V;Ys5f
FP"$tt (
HelloWorld::~HelloWorld() {} c6Q(Ygc
Ejq#~Zhr!
void HelloWorld::on_button_clicked() kVS?RHR
{ Ov82ibp_1
cout << "Hello, world!" << endl; V84*0&q