“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。 bd!U)b(}OV
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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》。 -ynBi;nH
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以下是用不同语言写成的Hello World程序的几个例子: f1mHN7hxW
Ada !VwmPAMr#v
with Ada.Text_Io; use Ada.Text_Io; y4@gGC=
procedure Hello is Yi(1^'Bi
begin brh=NAzt
Put_Line ("Hello, world!"); u$%A#L[
end Hello; kneuV8+(5
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汇编语言 KOey8tB)1
%-+j
x86 CPU,DOS,TASM 6;o3sf@Tf
MODEL SMALL %_MEfuL
IDEAL vJ"i.:Gf4
STACK 100H !\-WEQrp\
>"v9iT
DATASEG dC.bt|#Oz
HW DB 'Hello, world!$' a(;!O}3_)(
{uU 2)5i2-
CODESEG $ rUSKm#
MOV AX, @data ^~$\ g]
MOV DS, AX ^T6S()G
MOV DX, OFFSET HW gZO&r#
MOV AH, 09H ?]#OM_,8
INT 21H A`[@8
MOV AX, 4C00H 7(bQ}mHl\
INT 21H K R, z^9
END O0T/#<Cn!
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|7"$ w%2
x86 CPU,GNU/Linux,NASM 7]Em,
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). s"%lFA"-
;Enter this into "hello.asm" then type: 4zjs!AK%
;"nasm -f elf hello.asm" 5G[x }4U
;"ld hello.o -o hello" xCXQ<77
;"./hello" Ooc\1lX
tIc 7:th
section .data ;data section declaration "
.4,."
msg db 'Hello World!',0AH m^V5*JIh
len equ $-msg ;string length H4:&%"j7
s$w;q\1z
section .text ;code section declaration LlHa5]E@6
global _start ;entry point (start of execution) edipA
P~!
_start: mov edx,len ;string length kJ{+M] pW
mov ecx,msg ;string start %Jp|z? [/
mov ebx,1 ;file handle: stdout vDFGd-S
mov eax,4 ;sys_write AiP!hw/V$
int 80h ;kernel system call /vxm"CJR
os4{0Mxu
mov ebx,0 ;return value u5B:^.:p
mov eax,1 ;sys_exit Ag9?C*
int 80h ;kernel system call OGOND,/R?/
[1_A8s){u
Vi*e@IP/
x86 CPU,Windows,MASM32 8R/dA<Ww
.386 3BG>Y(v
.model flat,stdcall E{?au]y$J
option casemap:none t$J.+} }I
;Include 文件定义 3B0PGvCI1
include windows.inc cA)[XpQ:+W
include user32.inc =>iA gp'#
includelib user32.lib W/fuKGZi_
include kernel32.inc y7/F_{
includelib kernel32.lib j$Ab>}g]
;数据段 E{E0Z9t7&
.data t)f-mQz)
szCaption db 'A MessageBox!',0 @WMA }\Cc
szText db 'Hello,world!',0 k*?I>%^6#T
;代码段 "%qzj93>
.code :o46rBs
start: q?):oJ
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK KC`q#&dt
invoke ExitProcess,NULL */^QH@ P
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> cPDQ1qre!
end start `R"~v/x
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:9|\Z|S(I
AWK _oG&OJ@
BEGIN { print "Hello, world!" } bq>_qpr
=K\r-'V
*=AqM14 @
BASIC bD^b
传统版BASIC(例如GWBASIC): ;G\8jP'
as*4UT3
10 PRINT "Hello, world!" -=`#fDvBn
20 END Hnk:K9u.B:
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G
或在提示符输入: ,<-G<${
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?"Hello, world!":END ?e[lr>-
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现代版BASIC(例如Quick BASIC): A@hppaP!
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Print "Hello, world!" 3 ZEB
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以下的语句在Quick BASIC中同样有效: +N`ua
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? "Hello,world!" 9KWuN:Sg
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BCPL [NMVoBvG
GET "LIBHDR" /!h;c$
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LET START () BE B"yFS7Rrj
$( )R`x R,H
WRITES ("Hello, world!*N") [AMAa]^
$) ,#M Cn
[S5\#=_4S
ljTBvU
Befunge >zAUW[]C:I
"!dlrow olleH">v Wbr+KX8)
, Ym%xx!9
^_@ o1M$.*
pRkP~ZISU
fU=B4V4@
Brainfuck >B]'fUt5a
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< hxQqa 0B
+++++++++++++++.>.+++.------.--------.>+.>. [sB 9gY(
UMAgA!s
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C PDs@?nz,
#include <stdio.h> 93Co}@Y;Y+
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int main(void) '!/<P"5t
{ ;4Y%PVz~D
printf("Hello, world!\n"); :q#Xq;Wp
return 0; %CK^Si%+
} u\C
lP#
y;s`P.
g$b<1:8
C++ j~!X;PV3
#include <iostream> xlQBe-Wg
"'D=,*
int main() @`gk|W3
{ C.FI~Z
std::cout << "Hello, world!" << std::endl; zux{S;:?
return 0; #{?qNl8F*J
} =3L;Z[^9
x QIq^/F0
@)fd}tV
C++/CLI ouuuc9x]
int main() J:Qa5MTWp
{ Z'\h
System::Console::WriteLine("Hello, world!"); 8P|D13- Q
} 2AMo:Jqv
u:=7l
q^Y-}=w
C# (C Sharp) 'IwNTM
class HelloWorldApp u
fw ]=h)
{ 9Gnc9_]I;W
public static void Main() #`)(e JF
{ >Wv;R2|
System.Console.WriteLine("Hello, world!"); A<??T[
} NxsBX:XDn
} LU={")TdQ
]@phF _
t+!$[K0/
COBOL hpD!2 K3>
IDENTIFICATION DIVISION. 'h,VR=e<
PROGRAM-ID. HELLO-WORLD. NA ~Vg8
tP$<UKtU
ENVIRONMENT DIVISION. R}!:'^
AJF#Aw `o
DATA DIVISION. 2Eu`u!jhx
uC(V
PROCEDURE DIVISION. %-1O.Q|f
DISPLAY "Hello, world!". Y2~nBb
STOP RUN. gcl5jB5)>
@X#F3;
}f6HYU
Common Lisp oY H^_V
(format t "Hello world!~%") ,Ge"anO
z?R|Ok
!WQ-=0cm
DOS批处理 -#N.X_F
@echo off VgZsB$Ori
echo "Hello, world!" U_I5fK=
Yp^rR }N
+[\FD; >
Eiffel a6) BqlJ
class HELLO_WORLD GkQpELO:
?iWi
creation w=T\3(%j
make P*3BB>FO
feature `xqr{lhL
make is >JFO@O5
local
/} b03
io:BASIC_IO rrik,qyv6
do ] Zy5%gI
!!io s;01u_
io.put_string("%N Hello, world!") {#?N
end -- make Ac2n
end -- class HELLO_WORLD {Tq_7,8
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CYY=R'1:G{
Erlang $QLcH;+7t
-module(hello). 8
Hg+H=?
-export([hello_world/0]). 2fnkw/
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hello_world() -> io:fwrite("Hello, World!\n"). |EX(8y
TJ6*t!'*X
A>o*t=5
Forth 5K>3My#
." Hello, world!" CR +0nJ
dMv=gdY
nrub*BuA
Fortran 4;yKOQD|
WRITE(*,10) keL&b/@
10 FORMAT('Hello, World!') l5!|I:/*;
STOP eD?tLj
END k@ RDvn
8]/bK5`
_E@2ZnD2
HTML hK L4cpK4
<HTML> f!Y?S
<HEAD> 5YE'L.
<TITLE> Hello World! </TITLE> R3gdLa.
</HEAD> ;-~B)M_S`
<BODY> Ug>~Rq]
<p>Hello World!</p> f
e\$@-
</BODY> G\2CR*
</HTML> 4'/nax$Bx;
ls\WXCH
=.Pw`.
HQ9+ S"NqM[W
H /R]U}o^/(%
tdBm
(CsN
N
+Yxz;Mg
INTERCAL y" RF;KW>
PLEASE DO ,1 <- #13 $p#Bi-&
DO ,1 SUB #1 <- #238 AG`L64B
DO ,1 SUB #2 <- #112 A5c%SCq;
DO ,1 SUB #3 <- #112 KX ,S
DO ,1 SUB #4 <- #0 +Vb.lH[av
DO ,1 SUB #5 <- #64 LDgrR[
DO ,1 SUB #6 <- #238 naG=Pq<
DO ,1 SUB #7 <- #26 ?+@n3]`0
DO ,1 SUB #8 <- #248 Lb:g4A"
DO ,1 SUB #9 <- #168 qeV fE_<
DO ,1 SUB #10 <- #24 e^6)Zz1\
DO ,1 SUB #11 <- #16 <wN}X#M
DO ,1 SUB #12 <- #158 Y,<{vLEC
DO ,1 SUB #13 <- #52 ]7W&JKmA&
PLEASE READ OUT ,1 c}lb%^;)E
PLEASE GIVE UP +\d56j+D
I8hz(2jI
n{n52][J]
Java dk[!V1x4\
public class Hello yj 3cyLXw
{ CGW.I$u
public static void main(String[] args) T*Y~\~Jhu
{ oK6tTK
System.out.println("Hello, world!"); ?GKb7Oj
} [+2[`K
c]
} KKja/p
aL+
o /
T0wW<_jh
JSP HJ=:8:
<% _<n~n]%
out.print("Hello, world!"); ZCMw3]*
%> W,V:R
c69C
lk/n}bx
MIXAL q6McG HT
TERM EQU 19 the MIX console device number Vz~{UHH6
ORIG 1000 start address ?8npG]L)
START OUT MSG(TERM) output data at address MSG kyR:[+je
HLT halt execution %a>&5V
MSG ALF "MIXAL" Si2k"<5U
ALF " HELL" Z3"%`*Tmq-
ALF "O WOR" E:UW#S%A
f
ALF "LD " [A+
>^ {
END START end of the program orzZ{87
>,V9H$n
p|X"@kuseO
Nuva $p1(He0 2
<..直接输出..> I5k$H$
Hello, world! nsu@h
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<..或者..> B]nEkO'a:
CKYc\<zR0l
<. : %lTU
// 不带换行 27eooY1
? "Hello, world!" Jj; L3S
MK%9:wZ
// 或者 ~qiJR`Jj
=_.l8IYX$%
// 带换行 dN$0OS`s[
?? 'Hello, world!' f(>p=%=O
.> j+i\bks
G,&<<2{(f;
7-bd9uVK
OCaml ;km`P|<U
let main () = zJq~!#pZ
print_endline "Hello world!";; j8v8uZ;x
RD!&LFz/}
&jS>UsGh
Pascal l.67++_
program Hello; |XaIx#n
begin C.WX.Je
writeln('Hello, world!'); ~Otq %MQ
end. #{\J
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h9t$Uz^N
MU`1LHg
Perl &|s0P
#!/usr/local/bin/perl R6` WN
print "Hello, world!\n"; iOd&BB6
}~YA5^VQ$
qk%;on&`
PHP ih58<Up5
<?php 66g9l9wm(
print("Hello, world!"); S5gyr&dm
?> }s7$7
zIqU,n|]s
UFXaEl}R
Pike %6|nb:Oa
#!/usr/local/bin/pike 5MroNr
int main() H9'$C/w
{ 8H%;WU9-
write("Hello, world!\n"); iN bIp"W
return 0; }5ret
} +5w))9@
2~Kgv|09
R[zpD%CI
PL/I $.Qkb@}
Test: procedure options(main); ]&o$b ]
declare My_String char(20) varying initialize('Hello, world!'); ;;!yC
put skip list(My_String); h0(BO*cy
end Test; fe\mL mK9
d2*fLEsF
X:A^<L
~
Prolog _zR+i]9
goal prWk2_D;*
write("hello,world!"). K?6jXJseb
eQ$Y0qH1E
!44/sr'
Python sfpZc7
#!/usr/local/bin/python Q)~aiI0
print "Hello, world!"
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+jAGGv^)
fW{(lPx
REXX {0L1X6eg
say "Hello, world!" S(k3 `;K
^%d\qd`
YX!{P=Ua
Ruby n7zm>&
#!/usr/bin/ruby R"-mKT}
print "Hello, world!\n" `{f}3bO7C
zG }@0
?qmRbDI
Scheme "H=6j)Cb
(display "Hello, world!") 0CWvYC%e
(newline) 6gL#C&
e2AX0(
5Y.)("1f}f
sed (需要至少一行输入) 4R#chQ
sed -ne '1s/.*/Hello, world!/p' ?fQ'^agq
@bi}W`
RF`.xQ26=
Smalltalk OTvPU kp*
Transcript show: 'Hello, world!' (9tX5$e6N
EGGWrl}1
~IY%
SNOBOL j5(Z_dm'
OUTPUT = "Hello, world!" _mj,u64
END ?1*cO:O
dph{74Dc
'3R`lv
SQL $By<$
create table MESSAGE (TEXT char(15)); 8^kGS-+^
insert into MESSAGE (TEXT) values ('Hello, world!'); /}((l%U E.
select TEXT from MESSAGE; u0}vWkn\4
drop table MESSAGE; L 8c0lx}Nn
sG(~^hJ_
9Uh"iMB
Tcl g1;:KzVv
#!/usr/local/bin/tcl fJ=0HNmX
puts "Hello, world!" sSr&:BOsi
$|zX|
%@<8<6&q
TScript ML}J\7R
? "Hello, world!" pf]xqhL
]l;o}+`G
m~w[~flgZ
Turing A9[ F
put "Hello, world!" B+$%*%b
!`M,XSp(
3#WT.4k
UNIX-style shell h!M
程序中的/bin/sh可改为您使用的shell %Si6]3-^@
To\QjP-
#!/bin/sh OstQqV%@
echo 'Hello, world!' GiJ *Wp
Ozw.siD
I!ED?n
GUI <!&[4-;fU
mbKZJ{|4s
Delphi
kq?Ms|h
program HelloWorld; nxO"ua
uses ^NLmgwQ
Dialogs; 9d>-MX'
begin ]N/=Dd+|
ShowMessage('Hello, World!'); ,A9]CQ
end. hE &xE;
G?9"Y%
&r[`>B{tP
Nuva <S5BDk
<. UgRhWV~f0
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK'])
|{&{
.> d}OTO10
,xw#NG6
2ElJbN#
Visual Basic ~b(i&DVK
MsgBox "Hello, world!" @tF\p
'或者 \|n-
O=}=2
Print "Hello, world!" gGR"Z]DBk
*~2,/D
2d>z1%'
Visual FoxPro j9m_jv
? "Hello, world!" 0!D4pvlt
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e
X11 Z/G
ev"p
用一个程序 w3N[9w?1
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