“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。 6[?}6gQ
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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》。 %;O}FyP
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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 H06Bj(Y!
with Ada.Text_Io; use Ada.Text_Io; G$5m$\K
procedure Hello is )#`H."Z
begin AyTx' u
Put_Line ("Hello, world!"); 6vp0*ww
end Hello; H?U't
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汇编语言 PayV,8
7>-yaL{
x86 CPU,DOS,TASM 0YS?=oi
MODEL SMALL QIV%6q+*R
IDEAL s#^pC*,'
STACK 100H k/lFRi-i
iZ;TYcT
DATASEG @J vZ[T/
HW DB 'Hello, world!$' >V!LitdJ
sR*Nq5F#9
CODESEG D;js.ZF
MOV AX, @data Y\?j0X;
MOV DS, AX 0ar=cuDm
MOV DX, OFFSET HW |F!F{d^p
MOV AH, 09H ^l !L)iw
INT 21H !k<:k
"7
MOV AX, 4C00H ]rW8y%yD
INT 21H TnE+[.Qu
END /F~X,lm*~
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x86 CPU,GNU/Linux,NASM 6^YJ] w
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). &
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;Enter this into "hello.asm" then type: ]d'^Xs
;"nasm -f elf hello.asm" z\.1>/Z=
;"ld hello.o -o hello" nyhMnp#<
;"./hello" zWIeHIt
"=|t ~`
section .data ;data section declaration T[.[
g/`
msg db 'Hello World!',0AH ek)Xrp:2
len equ $-msg ;string length 6/2v
JBcY!dy-d
section .text ;code section declaration \6sQJq
global _start ;entry point (start of execution) 2QayM?k8
_start: mov edx,len ;string length e.;M.8N#SQ
mov ecx,msg ;string start #":a6%0Q
mov ebx,1 ;file handle: stdout JJf<*j^G
mov eax,4 ;sys_write 59!)j>f
int 80h ;kernel system call fLB1)kTS
\&q=@rJp(z
mov ebx,0 ;return value .3wY\W8Dr-
mov eax,1 ;sys_exit {}\CL#~y
int 80h ;kernel system call GLh]G(
b!a
%YLL
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x86 CPU,Windows,MASM32 nGa1a
.386 T1NH eH>
.model flat,stdcall E
$6ejGw-
option casemap:none ;^-:b(E
;Include 文件定义 [7\>"v6
include windows.inc r
nBOj#N
include user32.inc }uQ${]&D
includelib user32.lib ,w`~K:b.
include kernel32.inc yJD>ny
includelib kernel32.lib aRwnRii
;数据段 f7+Cz>R
.data (9GbG"
szCaption db 'A MessageBox!',0 ./w{L"E
szText db 'Hello,world!',0 Hj~O49%j&
;代码段 9<cOYY
.code I;j3*lV_
start: ^ d\SPZ
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK E`AYee%l
invoke ExitProcess,NULL 3N<&u
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> }kPVtSQ
end start 25em[Q:
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[{ =fE
AWK \ 4gXY$`@
BEGIN { print "Hello, world!" } dAxp ,):&J
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BASIC H;I~N*ltJ(
传统版BASIC(例如GWBASIC): Z .Pi0c+
V0NVGRQ
10 PRINT "Hello, world!" Lt>7hBe"
20 END u~'OcO
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或在提示符输入: gX*K&*q
gaeOgP.0
?"Hello, world!":END )N)ljA3]
rYGRz#:~+
现代版BASIC(例如Quick BASIC): _T]>/}}p
V/bH^@,sA
Print "Hello, world!" ~`Sle
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以下的语句在Quick BASIC中同样有效: y Nva1I
4<}A]BQVkJ
? "Hello,world!" ( u f5\}x
kaFnw(xa
9#@Zz4Ww
BCPL IVteF*8hU
GET "LIBHDR" !Zs,-=^D
295w.X(J
LET START () BE e1P7
.n}
$( "{(
[!
WRITES ("Hello, world!*N") ( V4G<-jG
$) O5-;I,)H
(,LL[&;:
'F5)ACA%
Befunge :_H>SR:
"!dlrow olleH">v Jsn <,4DO8
, d@g2k> >
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0&$xX!]
Gvn : c/m;
Brainfuck c]v
+
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< :6u~aT/
+++++++++++++++.>.+++.------.--------.>+.>. kF-TG3
:`J>bHE
ORH93`
C ZQ[~*)
#include <stdio.h> Wc;+2Hl[@
F=i!d,S
int main(void) NI\H
\#bJ
{ xF8 :^'
printf("Hello, world!\n"); /=ylQn3
*
return 0; 7;xKy'B\
} q\H7&w
JZ K7uB,X
bp%S62Dj
C++ J @B4
R&V
#include <iostream> %6 ]\^
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int main() U**)H_S/~
{ yW>R RE;
std::cout << "Hello, world!" << std::endl; J3&Sj{ o
return 0; .)`-Hkxa
} F< |c4
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a#QByP
C++/CLI ('d{t:TsY
int main() b42QBTeg
{ ~4 ^p}{
System::Console::WriteLine("Hello, world!"); \7
Mq $d
} ~:Ixmqi}R
q^6N+ ^}QN
#=x+
[d+
C# (C Sharp) oD,C<[(p
class HelloWorldApp mJ$Htyr
{ u]*5Ex (?
public static void Main() %MuaW(I o
{ oCA(FQ6
System.Console.WriteLine("Hello, world!"); f0FP9t3k
} !a[$)c
} F[`vH
W.$6pzB(
4NUNOv`[{
COBOL 4:3_ER ]J
IDENTIFICATION DIVISION. dXO=ZU/N
PROGRAM-ID. HELLO-WORLD. KpGUq0d@
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ENVIRONMENT DIVISION. J)huy\>,
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DATA DIVISION. 8t\}c6/3"
!x_t`78T
PROCEDURE DIVISION. {Zwf..,
DISPLAY "Hello, world!". 8KKz5\kn7
STOP RUN. k_O-5{
xgs@gw7!n0
YkI9d&ib+
Common Lisp DZP*x
(format t "Hello world!~%") 97]4
:Zv
Y?t2,cm
Yj3*)k
DOS批处理 QQ~23TlA
@echo off yM|g|;U
echo "Hello, world!" V4\560
xp=Zd\5W$
-3 ]|[
Eiffel en%B>]QI
class HELLO_WORLD J7m`]!*t
q_pmwJ:UL
creation 0Jg+sUs{
make ',#
feature J% AG`
make is ZM
8U]0[X
local BPiiexTV9
io:BASIC_IO jYk5~<\k
do dq2@6xd
!!io UAKu_RO6S
io.put_string("%N Hello, world!") lG 8dI\ `
end -- make %r P !
end -- class HELLO_WORLD WP!il(Gr
F-tFet
Se/ss!If
Erlang N-Z^G<[q.
-module(hello). ^Rk^XQCh
-export([hello_world/0]). %GVN4y&
l# BZzJ?~
hello_world() -> io:fwrite("Hello, World!\n"). nj"m^PmWo3
VH<e))5C
S[sr'ZW
Forth F;W'
." Hello, world!" CR TR?Bvy2s:g
FR(QFt!g
a_AJ)4
Fortran /]g>#J%b
WRITE(*,10) My],6va^
10 FORMAT('Hello, World!') EO"6Dq(
STOP V:8@)Hc=
END /D8EI
g<a<{|
j^{b^!4~}
HTML L^x5&CCwk
<HTML> FXxN>\76.
<HEAD> |
F8]Xnds
<TITLE> Hello World! </TITLE> L,
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</HEAD> )tCx5 9
<BODY> ,A?{~?u.
<p>Hello World!</p>
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</BODY> :^5>wDu{
</HTML> N:7.:Yw
[lZ=s[n.
}Wqtip:L
HQ9+ n@_)fFD%
H IOS^|2:,
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e]Puv)S>{8
INTERCAL }q]jjs
PLEASE DO ,1 <- #13 K,]woNxaw
DO ,1 SUB #1 <- #238 [)0
R'xL6
DO ,1 SUB #2 <- #112 y%FYXwR{
DO ,1 SUB #3 <- #112 IBDVFA
DO ,1 SUB #4 <- #0 =~
'^;D
DO ,1 SUB #5 <- #64 7<vy;"wB
DO ,1 SUB #6 <- #238 !9PX\Xbn
DO ,1 SUB #7 <- #26 8M~u_`6
DO ,1 SUB #8 <- #248 vU7&'ca
DO ,1 SUB #9 <- #168 nqrDT1b**
DO ,1 SUB #10 <- #24 1B(G]o_>!
DO ,1 SUB #11 <- #16 zv,\@Z9.($
DO ,1 SUB #12 <- #158 i:{:xKiC a
DO ,1 SUB #13 <- #52 PQ i
}Evxa
PLEASE READ OUT ,1 fmBkB8
PLEASE GIVE UP >r~|1kQ.
/K[]B]1NE
^SgN(-QH
Java $.;iu2iyo
public class Hello K('
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{ k 5t{
public static void main(String[] args) 'Z y{mq\
{ ~RAzFLt6x
System.out.println("Hello, world!"); fs7~NY
} pRb<wt7v
} x~%\y
u6f4yQ
0:jsV|5B8
JSP =I7[L{+~Y
<% ? 1GJa]G
out.print("Hello, world!"); TX&[;jsj
%> ~6] )*y
=?^-P{:\?
,Io0ZE>`V
MIXAL Kjv2J;Xuh
TERM EQU 19 the MIX console device number ` 4OMZMq
ORIG 1000 start address p0
START OUT MSG(TERM) output data at address MSG V@Ax}<$A
HLT halt execution KLON;
MSG ALF "MIXAL" Z`|> tbOfZ
ALF " HELL" w8O hJv
ALF "O WOR" FXcc1X/
ALF "LD " O0->sR
END START end of the program wQ@Zwbx
&:-GI)[o
5VuCU
Nuva B5D3_iX]
<..直接输出..> y)0gJP
L^
Hello, world! <. ezw4ju
\
=S3 L<
<..或者..> `d.Gw+Un
87R%ke
<. e#K rgUG
// 不带换行 =7#u+*Yr9
? "Hello, world!" W31LNysH!;
B$@1QG
// 或者 .v N)A
*
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// 带换行 uwmoM>I W^
?? 'Hello, world!' D\@e{.$MZ|
.> $#D
n 4
xAeZ7. Q&
bOi};/f
OCaml H^ESAs6
let main () = QziN]
print_endline "Hello world!";; Y!bpOa&
3/SfUfWo
b$PT_!d
Pascal C3]\$
program Hello; K<D`(voL
begin lp?i_p/z
writeln('Hello, world!'); 7ZL,p:f
end. !Jk(&.
`^?}s-H+
nZ" {y
Perl !."Izz/
#!/usr/local/bin/perl ]r"31.w(
print "Hello, world!\n"; cb\jrbj6
^-
u[q-
!
0~Um^q*'3
PHP oXnC"y}0P
<?php 5w]DncdQ~
print("Hello, world!"); Q]yV:7
?> L[`R8n1C
lp IteZw:
)e@01l
Pike #FrwfJOV
#!/usr/local/bin/pike C3&17O6
int main() VFQq`!*i
{ =1%zI%
write("Hello, world!\n");
iK$Vd+Lgc
return 0; R>Z,TQU
} +s#S{b
aS c#&{
A@9U;8k
PL/I &*Q|d*CP
Test: procedure options(main); rhlW
declare My_String char(20) varying initialize('Hello, world!'); >1#DPU(g
put skip list(My_String); lCM6T;2ID
end Test; 9O(i+fM
sURUQ H
c#]'#+aH
Prolog T*7S;<2
goal Y\ #.EVz
write("hello,world!"). ;u4@iN}p
)^*9oqQ
?$>u!V<'
Python Jnh;;<
#!/usr/local/bin/python =; ~%L
print "Hello, world!" 0"wbcAh)
"Nk=g~|
[lDt0l5^
REXX M="WUe_
say "Hello, world!" L8,H9T#e
U08<V:~
jhjW*F<u
Ruby ]# tGT0
#!/usr/bin/ruby $Uv<LVd(
print "Hello, world!\n" YR^Ee8 _H
l%-67(
^.pE`l%1}
Scheme MEdIw#P.}{
(display "Hello, world!") \NvC
(newline) ae9k[=-
#+2:d?t
[[Jv)?jm
sed (需要至少一行输入) UUdu;3E=5
sed -ne '1s/.*/Hello, world!/p' $sd3h\P&R
/xX,
a}[=_vb}K
Smalltalk :IP;FrcMP
Transcript show: 'Hello, world!' mh!N^[=n
g:~?U*f-
ZNL;8sI?>
SNOBOL *@$($<pY&
OUTPUT = "Hello, world!" #z-iL!?
END W<cW;mO
}iiG$?|.
ne!j%9Ar
SQL z[0LU]b<
create table MESSAGE (TEXT char(15)); q/ d5P
insert into MESSAGE (TEXT) values ('Hello, world!'); 1pYmtr
select TEXT from MESSAGE; 0`g}(}'L
drop table MESSAGE; T@d_t
4 _c:Vl
$v?! 6:
Tcl ,J`lr
U0
#!/usr/local/bin/tcl
Rsa\V6N>
puts "Hello, world!" -N-4l
ulz\x2[Pf
clR?< LO
TScript aOAwezfYR
? "Hello, world!" 5CRc]Q#@
7YQK@lS
T}b(
M*E
Turing :?&WKW
put "Hello, world!" LS2ek*FJO
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R&x7