“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。 o+t?OG/0
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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》。 -( iJ<
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以下是用不同语言写成的Hello World程序的几个例子: *=
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Ada MJC
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with Ada.Text_Io; use Ada.Text_Io; }"8_$VDcz
procedure Hello is +\ySx^vi
begin bCrB'&^t
Put_Line ("Hello, world!"); 2<O8=I _
end Hello; f6"j-IW[z
us cR/d
E.6\(^g
汇编语言 ~9c9@!RA2
bk?\=4B:E
x86 CPU,DOS,TASM y,x~S\>+
MODEL SMALL Gt%kok
IDEAL 3edAI&a5
STACK 100H Iu[EUi!"
f
LW>-O73
DATASEG Vg+SXq6G
HW DB 'Hello, world!$' {k*_'0
O92Y d$S
CODESEG 9mnON~j5
MOV AX, @data |l|]Tw
MOV DS, AX w-"&;klV
MOV DX, OFFSET HW eXd(R>Mx
MOV AH, 09H q-Qws0\v.
INT 21H 4_Jdh48-d
MOV AX, 4C00H c5;ROnTm
INT 21H $>UzXhf}\
END Jc)1}
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x86 CPU,GNU/Linux,NASM J$Q-1fjj
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Dpd$&Wr0Y
;Enter this into "hello.asm" then type: H6O\U2+
;"nasm -f elf hello.asm" v(^rq
;"ld hello.o -o hello" M<)2
;"./hello" p(G?
uS'ji
k}
section .data ;data section declaration %)D7Dr
msg db 'Hello World!',0AH |$t0cd
len equ $-msg ;string length =gIYa
wj^I1;lO
section .text ;code section declaration "Pc,+>vh
global _start ;entry point (start of execution) W24bO|>D
_start: mov edx,len ;string length ~roHnJ>
mov ecx,msg ;string start k +Oq$Pi
mov ebx,1 ;file handle: stdout z!+<m<
mov eax,4 ;sys_write q T].,?
int 80h ;kernel system call `9+EhP$RS
6{
Nbe=
mov ebx,0 ;return value [1C#[Vla
mov eax,1 ;sys_exit f#~Re:7.c
int 80h ;kernel system call ge[i&,.&z
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0Nu]N)H5<l
x86 CPU,Windows,MASM32 Cf7\>U->
.386 x\rZoF.NQ
.model flat,stdcall [f0HUbPX
option casemap:none }'W^Ki$
;Include 文件定义 |
#Pc
e
include windows.inc >{S $0D
include user32.inc yLx.*I^6
includelib user32.lib [q&J"dt
include kernel32.inc c)8wO=!
includelib kernel32.lib Ic
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;数据段 LXLDu2/@
.data 2YKM9Ks
szCaption db 'A MessageBox!',0 SDIeq
szText db 'Hello,world!',0 fF("c6:w(
;代码段 i!3K G|V
.code ".%LBs~$
start: ;ZJ,l)BNO
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK PHvjsA%"
invoke ExitProcess,NULL /09=Tyy/\
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> \6 hL W_q1
end start ,NEs{!
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Y14R"*t~
AWK Wu( 8G
BEGIN { print "Hello, world!" } `tG_O
s
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BASIC e<4z)
传统版BASIC(例如GWBASIC): ?+5{HFx
:dN35Y] a
10 PRINT "Hello, world!" !&O/7ywe
20 END A#X.c=
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或在提示符输入: `M ygDG+u
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?"Hello, world!":END aT#{t{gkA
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现代版BASIC(例如Quick BASIC): //lZmyP?
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Print "Hello, world!" ]7kGHIJ|
s ;s-6%p
以下的语句在Quick BASIC中同样有效:
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? "Hello,world!" oks=|'&
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BCPL _c8.muQ<
GET "LIBHDR" 82za4u$q#
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LET START () BE (Dm"e`
$( npcBpGL{
WRITES ("Hello, world!*N") .k`*$1?73x
$) s2?,' es
`B\KS*Gya#
R+K&<Rz
Befunge x}<G!*3
"!dlrow olleH">v o:8S$F`O@
, xdfvme[
^_@ X/-KkC
ZBR^[OXO
#A/J^Ko
Brainfuck tH,K\v`f
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ~,!hE&LE~
+++++++++++++++.>.+++.------.--------.>+.>. yp{F8V 8
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C W(a'^
#xe
#include <stdio.h> 62)lf2$1
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int main(void) V\K
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{ ;D"P9b]9$
printf("Hello, world!\n"); s$>m0^
return 0; :+
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} 8U2wH
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C++ CDW(qq-zD
#include <iostream> EB2^]?
[wio/wc
int main() ).+xcv
{ t7oz9fSz=?
std::cout << "Hello, world!" << std::endl; rfXF 01I
return 0; "UoCT7X
} ~I\r1Wj;
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C++/CLI !
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int main() :*P___S=
{ oyN+pFVB:$
System::Console::WriteLine("Hello, world!"); ccN &h
} /cL9?k;o
NkA6Cp[Q,1
h`EH~ W0:z
C# (C Sharp) ;;y@z[ >
class HelloWorldApp 0^!,[oh6*
{ i. u15$
public static void Main() Ag>>B9
{ fb0T/JTw
System.Console.WriteLine("Hello, world!"); W}R=
} +wz`_i)!
} [Yx-l;78
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p*AP 'cR
COBOL 7o965h
IDENTIFICATION DIVISION. @8M'<tr<z
PROGRAM-ID. HELLO-WORLD. tLXn?aNY
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ENVIRONMENT DIVISION. ;H
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1RI #kti-"
DATA DIVISION. /md Q(Dm
9Nag%o{*S>
PROCEDURE DIVISION. o^_W $4Fc
DISPLAY "Hello, world!". L^5&GcHP0
STOP RUN. @}&,W
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dWW-tHv#
(iCZz{l@~
Common Lisp Nn,vdu{^2
(format t "Hello world!~%") do=x9k@Q
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'#McY'.D T
DOS批处理 iO?gF
@echo off c+E//X|
echo "Hello, world!" SrQ4y`?
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f#;ubfi"z
Eiffel rY[3_ NG%
class HELLO_WORLD hpqHllL
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["9$
creation n~"g'Y
make EbBv}9g
feature xS
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make is nj~$%vmA
local pu2 wEQ
io:BASIC_IO ,);=
(r9
do |i}+t
!!io \]f5
io.put_string("%N Hello, world!") mJGO)u&
end -- make F;d%@E_Bc
end -- class HELLO_WORLD rSF;Lp)}
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Erlang VeNNsg>&
-module(hello). fXF=F,!t
-export([hello_world/0]). Xa{~a3Wy
=9DhO7I'
hello_world() -> io:fwrite("Hello, World!\n"). uS:
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W
8(vC jL
Forth DJ1XNpm
." Hello, world!" CR ] 689 Q%D
[0% yJH
`zElBD
Fortran Pg*?[^*
WRITE(*,10) abTDa6 /`v
10 FORMAT('Hello, World!') Edf=?K+\!i
STOP g33<qYxP
END XI%RneuDr:
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' D)1ka.
HTML K)Df}fVOc
<HTML> CU#L *kz
<HEAD> eHVdZ'%x
<TITLE> Hello World! </TITLE> zK'
_e&*
</HEAD> 3i]"#wK
<BODY> dl*_ m3T
<p>Hello World!</p> u|_LR5S!j
</BODY> kz7vbY
</HTML> RlI
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e/]O<, *
c{'$=lR "
HQ9+ ys&"r":I
H .iOw0z
aNOAu/
)^jQkfL
INTERCAL \&eY)^vw
PLEASE DO ,1 <- #13 G]L0eV
DO ,1 SUB #1 <- #238 o
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DO ,1 SUB #2 <- #112 9l]UE0yTL/
DO ,1 SUB #3 <- #112 i;[h
9=\/
DO ,1 SUB #4 <- #0 k9*J*7l-m
DO ,1 SUB #5 <- #64 ~Hs=z$
DO ,1 SUB #6 <- #238 9 _eS`,'
DO ,1 SUB #7 <- #26 ;D:=XA%
DO ,1 SUB #8 <- #248 d"Bo8`_
DO ,1 SUB #9 <- #168 ACgt"
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DO ,1 SUB #10 <- #24 sbzeY1
DO ,1 SUB #11 <- #16 @sN^BX`z
DO ,1 SUB #12 <- #158 X@cSP7b
DO ,1 SUB #13 <- #52 anLbl#UV
PLEASE READ OUT ,1 }&mj.hGv
PLEASE GIVE UP av$
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" l.!Ed
Java @?m+Z"o|z
public class Hello g083J}08
{ #iiwD|
public static void main(String[] args) Vw7WK
{ y`({ .L
System.out.println("Hello, world!"); -W9gH
} bZu$0IG
} #o~[1K+Yq
A^8x1ydZ
|"_ )zQ
JSP nVNs][
<% ,|A{!j`
out.print("Hello, world!"); c+H)ed>
%> <W?WUF
!F-sA: xq
whw{dfE
MIXAL I-TlrW=t
TERM EQU 19 the MIX console device number RFB(d=o5S
ORIG 1000 start address ve6x/ PD
START OUT MSG(TERM) output data at address MSG _Cj(fFL
HLT halt execution Xh`"
MSG ALF "MIXAL" 6oYIQ'hc
ALF " HELL" 3Mur*tj#
ALF "O WOR" 6vF/e#},
ALF "LD " .5]{M\aA
END START end of the program
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~+=E"9Oo
Nuva \<=IMa0
<..直接输出..> sLZ>v
Hello, world! ^:+Rg}]W^
v"/TmiZ
<..或者..> W\%q}q2?
T30Zk*V
<. )Y~xIj>
// 不带换行 ETe-
? "Hello, world!" k},> ^qE
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// 或者 !:d L~n
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// 带换行 IyOpju)?
?? 'Hello, world!' puA|NT
.> SYeE) mI
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8'\~%xw
OCaml W-ez[raY
let main () = $e*B:}x}
print_endline "Hello world!";; "9%qbMB
>gnF]<
KXq_K:r?
Pascal l0:5q?g
program Hello; +v!v[qn
begin zA,/@/'(
writeln('Hello, world!'); w2C&%Xk
end. McP~}"!^
+2Z#M
cLAesj
Perl 4~Dax)
#!/usr/local/bin/perl 05"qi6tncz
print "Hello, world!\n"; %<AS?Ry
yjFe'
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PHP @iRO7 6m
<?php ogJ<e_m
print("Hello, world!"); #52NsVaT@
?> 26 ?23J
;
vf N#NY6
Wy.";/C
Pike I-bF{
#!/usr/local/bin/pike !LiQ 1`V{
int main() rH.gF43O:
{ k2.G%]j
write("Hello, world!\n"); {-h, ZdH^
return 0; GG+5/hU
} jq[x DwPG
\lW_f{X)
.it2NS
PL/I as#J qE
Test: procedure options(main); 5
q65nF
declare My_String char(20) varying initialize('Hello, world!'); 7*;^UqGjz
put skip list(My_String); %Hwbw],kl8
end Test; ??(Kwtx{
A0>x9 XSkJ
`.8UKSH+
Prolog fhr-Y'
goal M~p=#V1D
write("hello,world!"). )2V@ p~k?
cix36MR_
'hF@><sqk
Python ${>DhfF
#!/usr/local/bin/python :,^>d3k
print "Hello, world!" jA<T p}$!
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Yf=FeH7"
REXX Nxi)Q$
say "Hello, world!" R04J3D|
7wi%j!
o\goE^,aeR
Ruby %t[K36,p
#!/usr/bin/ruby L=g_@b
print "Hello, world!\n" ]
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H;y}-=J+
;{Jb6'K1h
Scheme CC#C
(display "Hello, world!") y
1nU{Sc@
(newline) ~K`1
%Rarr
a:}E& ,&M
sed (需要至少一行输入) &D*8l?A/1f
sed -ne '1s/.*/Hello, world!/p' * <q4S(l
'\t7jQ
^Plc}W7h
Smalltalk 75AslL?t
Transcript show: 'Hello, world!' ~6HDW
p:tN642
,]q%/yxi
SNOBOL 9|3o<
OUTPUT = "Hello, world!" VYigxhP7
END >qpqQ;
bm
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wT/6aJoX
SQL <T4(H[9B
create table MESSAGE (TEXT char(15)); #HG&[Ywi
insert into MESSAGE (TEXT) values ('Hello, world!'); GA@ Ue9
select TEXT from MESSAGE; M=[th
drop table MESSAGE; [%~^kq=|
4By]vd<;=
GX5W^//}
Tcl 9wMEvX70
#!/usr/local/bin/tcl >a@>N
puts "Hello, world!" [#Fg\2bq_y
n$W"=Z;`
:o$@F-$k
TScript BKZ v9
? "Hello, world!" g ;LVECk
Q!]IG;3Sx|
D 'n7&