“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。 }FK6o
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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》。 ^\CQWgY(
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以下是用不同语言写成的Hello World程序的几个例子: s 2$R2,
Ada OO$<Wgh
with Ada.Text_Io; use Ada.Text_Io; s810714
procedure Hello is *=
D$
begin IKU-
Put_Line ("Hello, world!"); dV5$L
e#y
end Hello; /yOd]N;$
pUPb+:^R
<ya3|ycnS
汇编语言 *7R3EUUk
5p>a]gp
x86 CPU,DOS,TASM z(]*'0)P
MODEL SMALL %1 v)rg
y
IDEAL N7E[wOP
STACK 100H s4Wk2*7Mq
0 #q_LB
DATASEG h{! @^Q
HW DB 'Hello, world!$' "&r1&StO
o1Xk\R{
CODESEG m$o|s1t
MOV AX, @data hsl8@=_ B
MOV DS, AX _
9k^Hd[L$
MOV DX, OFFSET HW W$3p,VTMmB
MOV AH, 09H ?T^$,1-
INT 21H 1"'//0
7
MOV AX, 4C00H $v^F>*I1
INT 21H )O}x&@Q
END Gzs x0%`)
'`RCNk5l
e88JT_zrO
x86 CPU,GNU/Linux,NASM %0]&o,
w{
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). [$V_qFv{
;Enter this into "hello.asm" then type: I8[G!u71)_
;"nasm -f elf hello.asm" 6zDJdE'Es
;"ld hello.o -o hello" _Y0o\0B
;"./hello" >Z3}WMgBN
fLys$*^)^
section .data ;data section declaration $0wl=S
msg db 'Hello World!',0AH KomF)KQ2r
len equ $-msg ;string length )jH"6my_
XJQ[aU"[]N
section .text ;code section declaration N\vc<Zpn
global _start ;entry point (start of execution) !qcR5yk`2
_start: mov edx,len ;string length R1SEv$
mov ecx,msg ;string start 8U8"k
mov ebx,1 ;file handle: stdout Y,0O&'>
mov eax,4 ;sys_write B@F 1!8l
int 80h ;kernel system call L7KHs'c*
,mRN;|N
mov ebx,0 ;return value qH-dT,`"{
mov eax,1 ;sys_exit ;hg]5r_
int 80h ;kernel system call jf})"fz-*
s=6w-'; V
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x86 CPU,Windows,MASM32 W=|B3}C?
.386 c#l
(~g$D+
.model flat,stdcall Lb];P"2e+
option casemap:none IUZsLNW
;Include 文件定义 eag$i.^aS
include windows.inc !WY@)qlf
include user32.inc KN%Xp/lkX
includelib user32.lib Q0r_+0[7j
include kernel32.inc <}UqtDF 0
includelib kernel32.lib ")LF;e
;数据段 W0?yPP=.
.data J%}}(G~
szCaption db 'A MessageBox!',0 {o]OxqE@
szText db 'Hello,world!',0 bFTWuM
;代码段 #ucOjdquq
.code SKYS6b
start: GWhb@K
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 7f`jl/
invoke ExitProcess,NULL O|OPdD
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> & XrV[d[>
end start oACE:h9U
#<?j784
7{b|+0W
AWK :Z/ig%
BEGIN { print "Hello, world!" } pY:xxnE
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PL
VF
BASIC <(
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传统版BASIC(例如GWBASIC): )`U T#5
Bd7A-T)q!
10 PRINT "Hello, world!" B[Tw0rQ
20 END
0.Iw/e
#4|?;C)u\
或在提示符输入: 9,9( mbWJv
v=/V<3
?"Hello, world!":END xXyzzr1[
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现代版BASIC(例如Quick BASIC): J"SAA0)@
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Print "Hello, world!" hup]Jk
PS6G 7
以下的语句在Quick BASIC中同样有效: k|BEAdQ%M
S#ven&
? "Hello,world!" !Hgq7vZG
>Cf]uiR
5[;^Em)C
BCPL W`;E-28Dg
GET "LIBHDR" a#mdD:,cF
$+rdzsf)+/
LET START () BE .Wb),
$( Xe*
L^8+
WRITES ("Hello, world!*N") mWigy`V^~
$) V#Wd
'r'uR5jR
.!Z.1:YR
Befunge =si<OB
"!dlrow olleH">v x-q er-
, v|`)~"~
^_@ J|K~a?&vN
D@0eYX4s
JM M\
Brainfuck |"ck;.)
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< *ZY{^f
+++++++++++++++.>.+++.------.--------.>+.>. 3<Cd>o.
M.t5,NJ
T%ha2X=
C / P{f#rV5
#include <stdio.h> /.}&yRR
5#iv[c
int main(void) MEo+S
{ Ib!`ChZ
printf("Hello, world!\n"); !.F`8OD`u
return 0; ) .#,1
} (I\aGGW
:yO)g]KF
Q PGssQR6
C++ HeR-;L
#include <iostream> 6g<JPc
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int main() 6KV&E8Gn
{ (?~F}u
v
std::cout << "Hello, world!" << std::endl; cU*7E39
return 0; ogPxj KSI
} }z[O_S,X
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VoZ/v
YwKY3kL
C++/CLI 8)sqj=
int main() <}B]f1zX
{ <]"aP1+C
System::Console::WriteLine("Hello, world!"); `33+OW
} whvM^
agt7b@-5=
8;+t.{
C# (C Sharp) -B@jQg@
>
class HelloWorldApp ncu>
@K$n
{ U^Hymgb%
public static void Main() d<#Xqc
{ VP|9Cm=Fg
System.Console.WriteLine("Hello, world!"); PN<Y&/fB
} o%CBSm]
} 4(o0I~hpB?
A*@!tz<
lK}F>6^\
COBOL eZf-i1lJ
IDENTIFICATION DIVISION. z07!i@ue~
PROGRAM-ID. HELLO-WORLD. *USZ2|i
RU#Q<QI(
ENVIRONMENT DIVISION. 2\m+
gpO@xk$
DATA DIVISION. *}yW8i}36
As78yfK
PROCEDURE DIVISION. lOYwYMi
DISPLAY "Hello, world!". dpTap<Noby
STOP RUN. .XS rLb?
R1?g6. Mq
pNE!waR>
Common Lisp v!40>[?|p
(format t "Hello world!~%") S[* e K
Z
/&dC? bY
<udp:s3#T
DOS批处理 5>/,25
99
@echo off u},<On
echo "Hello, world!" UPLr[>Q#
,]Hn*\@p[c
l6)*u[}E
Eiffel 44wY5nYNt
class HELLO_WORLD Hn:%(Rg=aW
<L:v2 8c
creation QNn$`Qz.
make B*,9{ g0m/
feature .rax`@\8
make is AY|8wf,LS
local YAd.i@^
io:BASIC_IO 5jkW@
do zn@tLLX
!!io H@'Y>^z?
io.put_string("%N Hello, world!") {Pu\KRU
end -- make AVHn7olG
end -- class HELLO_WORLD Rl<~:,D
Hd6Qy {,*-
/zPN9 db
Erlang JF!!)6!2#
-module(hello). A+:K!|w
-export([hello_world/0]). wGAN"K:e
"l2_7ZXsPT
hello_world() -> io:fwrite("Hello, World!\n"). 42
8kC,
sd.:PE <
}fL8<HM\'c
Forth L@0DT&5
." Hello, world!" CR 3E:wyf)i"
RG #
I6h{S}2
Fortran b8Y1 .y"#
WRITE(*,10) c:hOQZ
10 FORMAT('Hello, World!') )vhHlZ *+
STOP 3mpEF<z
END V#C[I~l
!f]F'h8
cA AJ7?
HTML !9OAMHa*9
<HTML> FpCj$y~3
<HEAD> W!V06.
<TITLE> Hello World! </TITLE> 9:4P7
</HEAD> =i\~][-
<BODY> .\LWV=B
<p>Hello World!</p> [m!$01=
</BODY> qEX59v
</HTML> \d%&_rp
` _[\j]
$Ob]JAf}
HQ9+ 23&;28)8
H {Km|SG[-q
XR]]g+Z
J4xt!RW!
INTERCAL ${0Xq k
PLEASE DO ,1 <- #13 a{el1_DIGK
DO ,1 SUB #1 <- #238 +#,t
DO ,1 SUB #2 <- #112 auaFP-$`f
DO ,1 SUB #3 <- #112 ZXe[>H
DO ,1 SUB #4 <- #0 E^T/Qu
DO ,1 SUB #5 <- #64 U/wY;7{)#
DO ,1 SUB #6 <- #238 [}}oHm3&
DO ,1 SUB #7 <- #26 \D>'
DO ,1 SUB #8 <- #248 V=QvwQlZ
DO ,1 SUB #9 <- #168 boJQ3Xc
DO ,1 SUB #10 <- #24 j?3J-}XC
DO ,1 SUB #11 <- #16 nakhepLN
DO ,1 SUB #12 <- #158 o!wz:|\S
DO ,1 SUB #13 <- #52 yV=hi?f-[V
PLEASE READ OUT ,1 Td
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PLEASE GIVE UP
Js'COO
/Y|9!{.
C7eaioW$
Java &=K-~!?
public class Hello %[Ia#0'Y@
{ L)HuQVc g
public static void main(String[] args) ,dK% [
{ {;=+#QK/
System.out.println("Hello, world!"); q yQPR
} IgR_p7['.
} mzfj!0zR*
FV!
/M\S^!g@
JSP V92e#AR
<% (:vY:-\ bO
out.print("Hello, world!"); i!ejK6Q
%> I]jVnQ>&
>=r094<
JY_+p9KfyQ
MIXAL xAon:58m{
TERM EQU 19 the MIX console device number ]ZHC*r2i
ORIG 1000 start address Zb<DgJ=3
START OUT MSG(TERM) output data at address MSG b?h"a<7
HLT halt execution Xp4pN{h e
MSG ALF "MIXAL" &*T57tE
ALF " HELL" htkn#s~=
ALF "O WOR" P_lk40X
ALF "LD " f\2'/g}6a
END START end of the program rR^VW^|f
)xT_RBR
'FO^VJ;ha
Nuva q#c\
<..直接输出..> 57%:0loW
Hello, world! wvBJ?t,
7f~.Qus
<..或者..>
QU8?/
Qm^N}>e
<. ERCW5b[RT
// 不带换行 n)^B0DnIk
? "Hello, world!" k%VV(P]sT
Mpb|qGi!
// 或者 mWfzL'*
xud =(HLl
// 带换行 f.,S-1D]h
?? 'Hello, world!' jbMzcn~ehI
.> pn{Nk1Pl
+*lSB%`aS
87r#;ND
OCaml nhiCV>@y
let main () = G\ru%
print_endline "Hello world!";; svHs&v
dl;^sn0s
G %Wjtrpj
Pascal OqHD=D[
program Hello; {6 C!^ 5
begin _LCK|H%v'
writeln('Hello, world!'); GbBcC#0
end. w)5eD+n\-
&,3.V+Sz
|r%6;8A]i
Perl cQA;Y!Q#
#!/usr/local/bin/perl k`'^e/
print "Hello, world!\n"; .ie \3q)
Xj.6A,}^
HT[<~c
PHP yAW%y
<?php <x53b/ft
print("Hello, world!"); [?.k 8;k
?> r@/+
_@ev(B
nB`pfg
Pike Jx.Jx~
#!/usr/local/bin/pike "tn]s>iAd=
int main() .?@$Rd2@W
{ j_j~BXhIS
write("Hello, world!\n"); i%:oO
KI
return 0; /MosE,7l
} wHEt;rc(
![0\m2~iv
OLXG0@
PL/I ,1a6u3f,
Test: procedure options(main); 18zv]v
%
declare My_String char(20) varying initialize('Hello, world!'); Kn?>XXAc
put skip list(My_String); oDrfzm|[Y
end Test; !w(J]<
gC>
A*~J;
|zKFF?7#wE
Prolog `DUMTFcMX
goal 'W@X139zq
write("hello,world!"). x32hO;
#||^l_
6:fe.0H9
Python @_J~zo
#!/usr/local/bin/python >DP9S@W
print "Hello, world!" N!
}p
pW 2NrBq@w
l#Ipo5=
REXX 9l]+rs+
say "Hello, world!" HcavA{H
h-].?X,]Q
tMR&>hM
Ruby &'TZU"_
#!/usr/bin/ruby m6a`Ok P
print "Hello, world!\n" K7 -AVMY
64fa0j~<*M
wa\Yc,R
Scheme }~DlOvsq
(display "Hello, world!") 8iGS=M
(newline) ^<}9#q/rt
;}@.E@s%'
{^a"T'+
sed (需要至少一行输入) 'JU(2mF
sed -ne '1s/.*/Hello, world!/p' nm`[\3R
~k^rI jR
!ow:P8K?
Smalltalk :k*'MU}
Transcript show: 'Hello, world!' Ub2t7MU
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3CL/9C>
SNOBOL C&