“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。 `6xr:s
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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》。 7m4*dBTr
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以下是用不同语言写成的Hello World程序的几个例子: 3=-V!E
Ada r(KAG"5
with Ada.Text_Io; use Ada.Text_Io; g[Q+DT
procedure Hello is @p<t JR"M
begin ]sZ!
-q'8
Put_Line ("Hello, world!"); Seh(G
end Hello; ]Ns)fr6
>
JV$EY,
YL&)@h
汇编语言 P09f
2rxz<ck(
x86 CPU,DOS,TASM &4{!5r
MODEL SMALL G|b
I$
IDEAL Sjp ]TWj
STACK 100H 3I G<Ot9
"A]#KTP
DATASEG yJ4ZB/ZQ
HW DB 'Hello, world!$' #QNa|
f#=
y.$Ae1a=
CODESEG hQ (84u
MOV AX, @data t76B0L{
MOV DS, AX ^X;p8uBo
MOV DX, OFFSET HW k`w/
MOV AH, 09H G@zJf)u}
INT 21H fS$;~@p
MOV AX, 4C00H Z;y(D_;_
INT 21H HCw,bRxm
END NXX/JJ+w
l5/gM[0_7
B \LmE+a>
x86 CPU,GNU/Linux,NASM SW}?y%~
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). mXs.@u/
;Enter this into "hello.asm" then type: IU;a$
;"nasm -f elf hello.asm" \V#fl
;"ld hello.o -o hello" G|YNShK4=9
;"./hello" |:]}u|O
H[RX~Xk2E
section .data ;data section declaration 8n35lI(
[
msg db 'Hello World!',0AH Y @Ur}
len equ $-msg ;string length e}+Zj'5
_FxeZ4\
section .text ;code section declaration @{"?fqo
global _start ;entry point (start of execution) MK(~
_start: mov edx,len ;string length {H*
mov ecx,msg ;string start :$*@S=8 O
mov ebx,1 ;file handle: stdout NfWL3"&X
mov eax,4 ;sys_write
ejc>
int 80h ;kernel system call zGNmc7
JwQ/A[b
mov ebx,0 ;return value =~>g--^U
mov eax,1 ;sys_exit i1ScXKO
int 80h ;kernel system call [1nUq!uTm
GOOm] ]I
{y'4&vt<~
x86 CPU,Windows,MASM32 *-*SCA`E^=
.386 [RF 6mWQ
.model flat,stdcall ~jzjJ&O&
option casemap:none !t+ 3DMPn
;Include 文件定义 4]#$YehM5
include windows.inc Lg~ll$
U
include user32.inc G6dUm_iB
includelib user32.lib )-X/"d
include kernel32.inc ]h,iyWSs
includelib kernel32.lib oL~?^`cGZ
;数据段 Sm{> 8e}UE
.data "W~vSbn7
szCaption db 'A MessageBox!',0 R.cR:fA
szText db 'Hello,world!',0 X'U~g$"(+
;代码段 ]!j%Ad
.code ]T6pH7~
start: pp{2[>
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK m%=*3gH]&
invoke ExitProcess,NULL R?IRE91 :
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Y?3f
Fg
end start [+_>g4M~%
4fL`.n1^
]tzF
Ob
AWK CXi[$nF3
BEGIN { print "Hello, world!" } md,KRE
9s1^hW2%Q
7Ie=(x8):
BASIC LmytO$?2(
传统版BASIC(例如GWBASIC): 5+Ao.3Xn
`?O0)
10 PRINT "Hello, world!" Qj'Ik`o
20 END 9w~SzpJ%
SgYMPBh
或在提示符输入: }'*6 A
+~~2OU L
?"Hello, world!":END `ZbFky{
3I(;c ,S
现代版BASIC(例如Quick BASIC): [2Zl
'+
skBD2V4
Print "Hello, world!" oEX^U4/=
b;%t*?t
以下的语句在Quick BASIC中同样有效: lh[?`+A
Xdwpn+7s
? "Hello,world!" ,ga6
|-;VnC&UY
]x{.qTtw
BCPL Lx tgf2r
GET "LIBHDR" 0zE@?.
k(M:#oA!
LET START () BE [Ky3WppR
$( x
FWhr#5,
WRITES ("Hello, world!*N") >lfuo
$) ,ryL("G
R1D ;
u`&lTJgF/O
Befunge #y[U2s Se
"!dlrow olleH">v YM};85 K
, v+I-*,R
^_@ Io|Du
AL.psw-Il
O =;jDWE
Brainfuck J/O{x
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< bK.*v4RG
+++++++++++++++.>.+++.------.--------.>+.>. WN<g _8QR
U2l3E*O
wYg!H>5
C 6JDaZh"=K
#include <stdio.h> '&'m#H*:
9}u,`&
int main(void) |q58XwU `
{ /isalOT
printf("Hello, world!\n"); xDGS`o_w_
return 0; Fs].Fa
} 6pSi-FH
N0.|Mb"?t
4l+!Z, b
C++ R(`:~@3\6
#include <iostream> tAF?.\x"g
7@
)
int main() OQ7 `n<I<)
{ m3TR}=n
std::cout << "Hello, world!" << std::endl; z9*e%$+S
return 0; :nQlS
} 0/b
_T
h%krA<G9
o6d x\
C++/CLI t*=[RS*
int main() ATl?./T u
{ _$ivN!k
System::Console::WriteLine("Hello, world!"); xH xTL>,?
} ~Ix2O
'gvR?[!t
X!p`|i
C# (C Sharp) G$>QH-p
class HelloWorldApp Sk E <V0
{ ;Mup@)!j
public static void Main() -cM1]soT
{ ^J5{quV
System.Console.WriteLine("Hello, world!"); IQRuqp KL
} v6s,lC5qR
} B*,)@h
lI 4tW=
2S{P(B
COBOL K5jt(7i
IDENTIFICATION DIVISION. PDuc;RG
PROGRAM-ID. HELLO-WORLD. @kqxN\DE
@Fb1D"!
ENVIRONMENT DIVISION. +yp:douERi
:-B+W9'5
DATA DIVISION. d=PX}o^
N+=|WeZ
PROCEDURE DIVISION. jYFJk&c
DISPLAY "Hello, world!". [/CGV8+
STOP RUN. a:fP
U}RBgPX!
UowvkVa
Common Lisp y
%Q. (
(format t "Hello world!~%") <Gi%+I@szl
=FrB{Eu
A~2)ZdAN
DOS批处理 N)H "'#-
@echo off XP:A"WK"
echo "Hello, world!" ('tXv"fT
ZpV]X(Px(o
7C|!Wno[;
Eiffel IT1YF.i
class HELLO_WORLD }/F$73Xd
n^Ca?|}
,
creation 5 wrRtzf
make x#J9GP.
feature OT%E|) 6'
make is 94rSB}b.O
local j#1G?MF
io:BASIC_IO lh8QtPe
do P.'.KZJ:WD
!!io @up,5`
io.put_string("%N Hello, world!") %.Ma_4o
Z
end -- make rm8Ys61\=
end -- class HELLO_WORLD +;?mg(:
@-'a{hBR
q 84*5-
Erlang FH+X<
-module(hello). 5To@d|{
-export([hello_world/0]). Y~WdN<g
%_ibe
hello_world() -> io:fwrite("Hello, World!\n"). jYHn J}<
*nCA6i
QB*,+u4
Forth dFm_"135
." Hello, world!" CR %
i4
5
2.D2
o
wq$$.
.E
Fortran tk&AZb,sP
WRITE(*,10) ;xZ+1zmL0
10 FORMAT('Hello, World!') _MBhwNBxZ
STOP {p +&Q|
END )G/bP!^+(
Q":_\inF
f#0HiE!
HTML ]n!V
<HTML> 2n:<F9^"
<HEAD> x]{P.7IO'
<TITLE> Hello World! </TITLE> Mg;pNK\n
</HEAD> ^M'(/O1
<BODY> {821e&r
<p>Hello World!</p> CS7b3p!I
</BODY> u>*a@3$f
</HTML> 'J,UKK\5
5/=$p:E>
';tlV
u
HQ9+ n<.7tr0f\
H /)ZjI
W"|
FDMQLx f
jHFjd'
INTERCAL Uwc%'=@
PLEASE DO ,1 <- #13 Lce,]z\_
DO ,1 SUB #1 <- #238 g\q .
DO ,1 SUB #2 <- #112 B\J[O5},
DO ,1 SUB #3 <- #112 j&8YE7
DO ,1 SUB #4 <- #0 6}^x#9\
DO ,1 SUB #5 <- #64 sL$sj|" S
DO ,1 SUB #6 <- #238 p&(0e,`z/
DO ,1 SUB #7 <- #26 -9b=-K.y
DO ,1 SUB #8 <- #248 1bFZyD"
DO ,1 SUB #9 <- #168 \p4*Q}t
DO ,1 SUB #10 <- #24 .]v>LsbhF
DO ,1 SUB #11 <- #16 dn(!wC]
DO ,1 SUB #12 <- #158 kR<sSLEb
DO ,1 SUB #13 <- #52 f2WVg;Z
PLEASE READ OUT ,1 SZWNN#w60?
PLEASE GIVE UP 2(eO5.FYF
JtFq/&{i
Y&6jFT_
Java {7:1F)Pj
public class Hello Y25`vE(
{ D!`[fjs6A
public static void main(String[] args) ef)RlzLOq
{ xV>
.]
System.out.println("Hello, world!"); ht-'O"d:
} REh"/d
} 5U2%X
pO
K*@?BE
k79OMf<v
JSP
3f`Uoh+
<% 56pj(}eq
out.print("Hello, world!"); G4|C227EO
%> {sw|bLo|+
0~nX7
lQIg0G/3
MIXAL mB`HPT
TERM EQU 19 the MIX console device number D?KLV_Op
ORIG 1000 start address NS[ Z@@
START OUT MSG(TERM) output data at address MSG 7!M; ?Y
HLT halt execution gq('8*S
MSG ALF "MIXAL" 4e#g{,
ALF " HELL" G#7*O`
ALF "O WOR" $O |Xq7dp
ALF "LD " #un'?]tZF
END START end of the program &* VhtT?=5
v[$e{ Dz(
B&MDn']fV/
Nuva WI1YP0V
<..直接输出..> WL+EpNKSf
Hello, world! 4 $k{,
Id?-Og2iV
<..或者..> /Z2u0jNArP
)
gl{ x
<. ug%7}&
// 不带换行 t]B`>SL3W
? "Hello, world!" EZj rX>"#
6nA9r5Ghv
// 或者 o "r
YIN* '!N
// 带换行 `Am|9LOT
?? 'Hello, world!' }0&Fu?sP
.> 4zs0+d+
+P))*0(c_
D&fOZVuqZ
OCaml Da<`|
l
let main () = 3ko
h!q+
print_endline "Hello world!";; H0b{`!'Fs:
\>\ERVEd
^4IJL",
Pascal -[*y{K@dh
program Hello; +_X*one
begin 2?qT,pN
writeln('Hello, world!'); 2a-]TVL3
end. jct=Nee|
eJf]"-
+/_XSo
Perl rrC\4#H[??
#!/usr/local/bin/perl "7-}#_!g
print "Hello, world!\n"; w!`e!}
|QZ
E
*QN,wBQ
PHP XnYX@p
<?php /QB;0PrE
print("Hello, world!"); LmY[{.'tX
?> Swf%WuDj
(<.\v@7HC
papMC"<g$
Pike 7Tp+]"bL
#!/usr/local/bin/pike 3Z~_6P^
+N
int main() }S*]#jr&
{ iYiTkq
write("Hello, world!\n"); 0OlT^
return 0; ]fDb|s48
} ydVDjE
Y
+b_[JP2
p! k~ufU
PL/I |)d%3s\
Test: procedure options(main); pcIS}+L
declare My_String char(20) varying initialize('Hello, world!'); }x#e.}hf&
put skip list(My_String); JS03BItt
end Test; XlX t,
Pc?"H!Hkn
fJNK@F
Prolog 83]m/Iz
goal ]D~Ibv{Y
write("hello,world!"). IPn!iv)
By9CliOy:
7'At_oG
Python EajJv>X7
#!/usr/local/bin/python d %FLk=]
print "Hello, world!" W9}
,f
Cj }H'k<B
r(>812^\
REXX #Mk3cp^Yl
say "Hello, world!" k&L/JzzI
Aua}.Fl,
GwA\>qXw
Ruby CL`+\
.
#!/usr/bin/ruby W8x&:5Fc)3
print "Hello, world!\n" \
C$t
Ttl
m&d+C
Jza?DhSAZ
Scheme Z{t `f[
(display "Hello, world!") PZ#up{[o
(newline) BK)<~I
*Ej;}KSv
[jCYj0Qf8
sed (需要至少一行输入) "*`!.9pt
sed -ne '1s/.*/Hello, world!/p' a>-qHX-l
7K&Uu3m
>S0kiGDV{
Smalltalk /oJ &