“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。 m\|I.BUG
|Vc8W0~0
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》。 /g2( <
|XOD~Plo^
以下是用不同语言写成的Hello World程序的几个例子: cP63q|[[
Ada j?4k{?x
with Ada.Text_Io; use Ada.Text_Io; aH'Sz'|E
procedure Hello is E[HXbj"
begin TTpK8cC
Put_Line ("Hello, world!"); #R<4K0Xan
end Hello; Epsc2TuH7
j K?GB
*[@lp7
汇编语言 k$?zh$
8r(S=dA
x86 CPU,DOS,TASM i ]gF
6:&
MODEL SMALL L=ZKY
IDEAL K.G}*uy
STACK 100H F`-|@k
w;}pebL:
DATASEG Q~<$'j
HW DB 'Hello, world!$' -qz;
54s+4R FL
CODESEG
+{N LziO
MOV AX, @data i>i@r ;:|
MOV DS, AX 4-z3+e
MOV DX, OFFSET HW Rok`}t
MOV AH, 09H p<
Emy%
INT 21H 4Mi~eL%D
(
MOV AX, 4C00H iZ2|/hnw
INT 21H rr>*_67-:
END `=^;q6f
((F[]<?
IM),cOp=
x86 CPU,GNU/Linux,NASM p6u"$)wt
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). !7t,(Id8
;Enter this into "hello.asm" then type: w?]k$
;"nasm -f elf hello.asm" %4?
;"ld hello.o -o hello" `!Ei
H<H}
;"./hello" I`:nb
JPW+(n|g
section .data ;data section declaration 3\WLm4
msg db 'Hello World!',0AH ]+x;tPo
len equ $-msg ;string length ^XEX" E
J(F]?H
section .text ;code section declaration ?3jOE4~aHr
global _start ;entry point (start of execution) <X~
X#9V
_start: mov edx,len ;string length S@;>lw,s!
mov ecx,msg ;string start #aUe7~
mov ebx,1 ;file handle: stdout *e{d^
mov eax,4 ;sys_write H^sPC{6+pf
int 80h ;kernel system call E8#RG-ci
+[@Ug`5M
mov ebx,0 ;return value e8O[xM
mov eax,1 ;sys_exit vk:@rOpl
int 80h ;kernel system call rCqcl
M0g!"0?
~E&drl\
x86 CPU,Windows,MASM32 Wo&10S w
.386 f@&C
\
.model flat,stdcall g-j`Ex%
option casemap:none hyv*+FV;
;Include 文件定义 X+"8yZz3?
include windows.inc 94Mh/A9k
include user32.inc \
a18Hp|%
includelib user32.lib Ag
QR"Nu6
include kernel32.inc 8" l9W=
includelib kernel32.lib g
&~T X
;数据段 aGvD
.data pv1J6
szCaption db 'A MessageBox!',0 Qa~dd{?
szText db 'Hello,world!',0 "J^M@k\!
;代码段 }2 zJ8A9-
.code aY7kl
start: u|h>z|4lJj
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK K~8;wDN`b
invoke ExitProcess,NULL gn"_()8cT
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> . fq[>zG'&
end start fOtin[|}6@
#|`/K[.xd%
\Ku6gEy
AWK C=2"*>lTn
BEGIN { print "Hello, world!" } 4Sv&iQ=vh
Z[:fqvXQ
|u,2A1
BASIC J/Ki]T9
传统版BASIC(例如GWBASIC): d54(6N%
4h wUH
10 PRINT "Hello, world!" n|
=k9z<y8
20 END OV ~|@{6T
i~
D,
或在提示符输入: @(2DfrC
fwB+f`w`
?"Hello, world!":END 13(JW
>i=^Mh-bm
现代版BASIC(例如Quick BASIC): /pzEL
Gr6XqO_
Print "Hello, world!" E ?(+v
KA1Z{7UK%
以下的语句在Quick BASIC中同样有效: =\H.C@r
_uU}J5d.
? "Hello,world!" ~3 4Ly
#7K&x.w$
!Tuc#yFw
BCPL O@St^o*A}
GET "LIBHDR" 4RYK9=NH
~9#[\/;"
LET START () BE 9Cbf[\J!bq
$( o(5Xj$Z
WRITES ("Hello, world!*N") JJlwzH
$) ^Z]1Z
$'!r/jV
Z'iXuI49
Befunge +4U ?*:n
"!dlrow olleH">v Fa78yY+6
, `h+ia/
^_@ G\3@QgyQ
\A'MEd-
Enr8"+.(
Brainfuck hQ`g
B.DR
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< #:"F-3A0
+++++++++++++++.>.+++.------.--------.>+.>. v#i,pBj
D h y
XUeBK/aQ{
C !uoU 8Ki9
#include <stdio.h> tEP~`$9
_hlLM,p
int main(void) A+i|zo5p=k
{ ZnDI
J&S
printf("Hello, world!\n"); .T0w2Dv/
return 0; !ckmNE0
} dbF?#s~u
!C>}j* 4
Om`VQ?
C++ S(xlN7=
#include <iostream> Iqe=)
Q $Y ]KV
int main() ``bIqY
{ 9A0wiKp
std::cout << "Hello, world!" << std::endl; 'B&gr}@4O=
return 0; $OMTk
} P+00wbx0
0 =#)-n
h6c0BmS{1
C++/CLI D9`J||]E
int main() OL|_@Fv`A
{ O^(ji8[l
System::Console::WriteLine("Hello, world!"); .: ~);9kj
} RL0,QC)e#@
GZgu1YR
2uw1R;zw
C# (C Sharp) 9&e=s<6dO
class HelloWorldApp Bu4J8eLx
{ PScq-*^
public static void Main() t.'| [pOV
{ |E:q!4?0
System.Console.WriteLine("Hello, world!"); #;ezMRKM"
} 8nn%wps
} ];X[x s
QRbiO
T;/Y/Fd
COBOL [_W#8{
IDENTIFICATION DIVISION. R7YLI1ov
PROGRAM-ID. HELLO-WORLD. (3kz(6S
3(D!]ku~m
ENVIRONMENT DIVISION. KG:CVIW
Y
rXR=fj= 2
DATA DIVISION. WN8XiV
B?d^JWTZ
PROCEDURE DIVISION. w6ZyMR,T
DISPLAY "Hello, world!". .|=~x3mPw
STOP RUN. ;{@ [ek6
6
6S
I
E#'JYz@
Common Lisp D*!p8J8Ku
(format t "Hello world!~%") <)01]lKH
daamP$h9
#gjhs"$~
DOS批处理 SymBb}5
@echo off bF'Y.+"dr
echo "Hello, world!" OhUEp g[
aKi&2>c5>
iDp'M`(6h
Eiffel uLok0"}
class HELLO_WORLD xb`,9.a7
ktQMkEj#
creation YK(I'
make t[>y=89
feature 05_aL` &eb
make is D
vG9(Eh
local AUCk]
io:BASIC_IO ID+o6/V8
do ~zdHJ8tYp
!!io }O=QXIF5
io.put_string("%N Hello, world!") %"#%/>U4
end -- make d4'*K1m
end -- class HELLO_WORLD L< 3U)Gp
_
U/[n\oC
n/ ]<Bc?
Erlang Ur^~fW1o
-module(hello). jSLC L'
-export([hello_world/0]). a>w@9
*=+m;%]_
hello_world() -> io:fwrite("Hello, World!\n"). C)w11$.YQ9
Cso!VdCX
s{IXth6
Forth 6g\SJO-;N
." Hello, world!" CR `U-i{i
3aMfZa<=
j+B+>r^
Fortran -Ucj|9+(a
WRITE(*,10) "'389*-
10 FORMAT('Hello, World!') y^utMH
STOP XQI.z7F
END n.}A
:Z
{R`,iWV
Ml)0z&jQX
HTML iR
k.t=B
<HTML> \?n4d#=$o
<HEAD> 2L=+z1%I
<TITLE> Hello World! </TITLE> )`Zj:^bz9
</HEAD> /$]#L%
<BODY> GtYtB2U
<p>Hello World!</p> ']'H8Y-M
</BODY> 0I|IL]JL
</HTML> 014p = W
D%PrwfR
m@Ziif-A
HQ9+ eVRFb#EU0e
H uU_0t;oR3
j/I^\Ms
-c%K_2`
INTERCAL RPb/U8
PLEASE DO ,1 <- #13 \>8r)xC
DO ,1 SUB #1 <- #238 4Ji6B)B
DO ,1 SUB #2 <- #112 4';~@IBf
DO ,1 SUB #3 <- #112 a(!_3i@
DO ,1 SUB #4 <- #0 2&L2G'
DO ,1 SUB #5 <- #64 aD
33!
:y
DO ,1 SUB #6 <- #238 P=Au~2X
DO ,1 SUB #7 <- #26 t:pgw[UJ
DO ,1 SUB #8 <- #248 os=Pr{
DO ,1 SUB #9 <- #168 -,;r %7T
DO ,1 SUB #10 <- #24 &C_0JyT
DO ,1 SUB #11 <- #16 d%IM`S;fh
DO ,1 SUB #12 <- #158 VBHDI{HzRv
DO ,1 SUB #13 <- #52 1e Wl:S}
PLEASE READ OUT ,1 +9 Uo<6}
PLEASE GIVE UP #LP38wE
KY1(yni&8[
D%tcYI(
Java (%\vp**F
public class Hello )v1y
P
{ {9yv3[f3
public static void main(String[] args) T]&%
KQ
{ ~;m3i3D
System.out.println("Hello, world!"); fc}G6P;3{
} HM'P<<
} 3['aK|qk.
};rxpw>ms
+/">]QJ
JSP %t*_Rtz\o
<% O<A$,<6 7
out.print("Hello, world!"); Qktj
%> $d<vPpJ3
*2K/)(
}|MPQy
MIXAL ba=-F4?
TERM EQU 19 the MIX console device number iX3Y:
ORIG 1000 start address RyI(6TZl
START OUT MSG(TERM) output data at address MSG Gp0B^^H$
HLT halt execution $L~?!u&N
MSG ALF "MIXAL" J>H$4t#HX
ALF " HELL" {'.[N79xP
ALF "O WOR" --(e(tvf
ALF "LD "
@P1#)
END START end of the program ZGstD2N$
c ilo8x`
rQ_!/J[9
Nuva '}\#bMeObg
<..直接输出..> S4r-s;U-v/
Hello, world! C'6yt
>mk}
<..或者..> yuTSzl25,/
P;A9t #\
<. 3Kv~lo^
// 不带换行 ~OuK ewr\
? "Hello, world!" v/W\k.?q/
av}Giz
// 或者 -?m"+mUP
@
m' zm:
// 带换行 xWZ87
?? 'Hello, world!' jH4,-
.> MLu@|Xgh
.ZV-]jgr
/-in:gX8
OCaml 8'niew
5d
let main () = ({"jL*S,q
print_endline "Hello world!";; |OgtAI9
!$q *~F"S
^Po^Co
Pascal @-L4<=$J
program Hello; 5:oteNc3
begin LSX;|#AI
writeln('Hello, world!'); 'Gr}<B$A3
end. Q+Sx5JUR~
vz\^Aa
#fv
OoG Nij
Perl BZ '63
#!/usr/local/bin/perl 2 Nr*
print "Hello, world!\n"; &d!Q%
a#U2y"
4#dS.UfI
PHP (
04clU^F
<?php _4Ciai2Ql
print("Hello, world!");
c.<bz
?> #i t)
K!L0|WH%!
fz9
,p;b
Pike E`M, n,
#!/usr/local/bin/pike n`W7g@Sg#I
int main() C0RnBu
{ `$fKS24u
write("Hello, world!\n"); p3Ey[kURp
return 0; z 2/E?$(
} &8w
MGahp
I1J/de,u
2r =8&~9z
PL/I +NM`y=@@
Test: procedure options(main); _J N$zZ{
declare My_String char(20) varying initialize('Hello, world!'); u0s25 JY.%
put skip list(My_String); "DpgX8lG_
end Test; ees^j4
Xb/W[rcs
::&hfHR*P
Prolog oP%'8%tk
goal @v:p)|Ne;
write("hello,world!"). !_a@autj
[k<w'n*
o 9?#;B$
Python E
U#
M.
#!/usr/local/bin/python hFiJHV
print "Hello, world!" v\#1&</qd^
mO?yrM *
s|q]11r+H
REXX #rps2nf.j
say "Hello, world!" %F.^cd"
I<&(Dg|XQ
@pn<x"F5'
Ruby !!\OB6
#!/usr/bin/ruby ~HM,@5dFC
print "Hello, world!\n" 6u6,9VG,
Z~s"=kF,
W "}Cfv
Scheme A4|L;z/A[h
(display "Hello, world!") H[;\[3
(newline) sX,."@[
DV6B_A{kI
S0zk<