“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。 I6^y` 2X
M2Nh3ijr
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》。 4;6"I2;zfG
@} r*KF-
以下是用不同语言写成的Hello World程序的几个例子: PaaMh[OmG
Ada B~I ]3f
with Ada.Text_Io; use Ada.Text_Io; E{T3Xwg
procedure Hello is P8YnKyI,.
begin LA6XTgcu
Put_Line ("Hello, world!"); g=\(%zfsxr
end Hello; !0l|[c4 e>
L ci?
-dM~3'
汇编语言 B&_:20^y~
<.ZIhDiEl
x86 CPU,DOS,TASM ?Z{/0X)]|
MODEL SMALL E!Q@AZ
IDEAL BbX$R`f
STACK 100H >V^8<^?G
R|RGoGE6g
DATASEG MGF!ZZ\
HW DB 'Hello, world!$' ? X8`+`nh
a?y ucA
CODESEG _/:- -Z
MOV AX, @data WfO E I1
MOV DS, AX z -?\b^
MOV DX, OFFSET HW ^VYR}1Mw
MOV AH, 09H cIO/8D#zU
INT 21H .V!5Ui<
MOV AX, 4C00H 2?ue.1C
INT 21H +O8[4zn&k
END bSIY|/d+
GG#-x$jK
vE[d& b[
x86 CPU,GNU/Linux,NASM vu.ug$T
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). XO;_F"H=
;Enter this into "hello.asm" then type: `lY-/Ty
;"nasm -f elf hello.asm" r.?dT |A
;"ld hello.o -o hello" z"<S$sDh
;"./hello" ;rf{T[i
:7(fBf5
section .data ;data section declaration oT}$N_gFT
msg db 'Hello World!',0AH d[h=<?E5
len equ $-msg ;string length efyEzL
;ab[YMkH
section .text ;code section declaration 5i6Ji(
global _start ;entry point (start of execution) )P7oL.)
_start: mov edx,len ;string length \ ERBb.
mov ecx,msg ;string start w?D=
mov ebx,1 ;file handle: stdout A@3'I ;
mov eax,4 ;sys_write mg*iW55g
int 80h ;kernel system call Idu'+O4
eV_",W
mov ebx,0 ;return value LiEEQ
mov eax,1 ;sys_exit b|87=1^m[
int 80h ;kernel system call 9+(b7L
HHx5VI
]fY:+Ru
x86 CPU,Windows,MASM32 :LuA6
.386 # 9bw'm
.model flat,stdcall CM~x1f *v
option casemap:none f:8!@,I
;Include 文件定义 =&g:dX|q8
include windows.inc @[D5{v)S
include user32.inc C,ldi"|
includelib user32.lib qi@Nz=t#HJ
include kernel32.inc ZW))Mx#K=T
includelib kernel32.lib E7$ aT^
;数据段 LI-ewea
.data W DnNVE
szCaption db 'A MessageBox!',0 k Jz^\Re
szText db 'Hello,world!',0 k7JC~D
E#
;代码段 "S@]yL
.code \V~B+e
start: XFFm'W6@
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK +v%+E{F$+
invoke ExitProcess,NULL .5HD i-
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Zp/P/97p
end start l/?bXNt
A/ zAB3
M\ wCZG
AWK a"cw%L
BEGIN { print "Hello, world!" } {dh@|BzsbH
z>W?\[E<2
#Hy9 ;Q
BASIC f/
3'lPK^
传统版BASIC(例如GWBASIC): -R9{Ak
UnDX .W*2
10 PRINT "Hello, world!" ;qzn_W
20 END XcbEh
9n5uO[D
或在提示符输入: ?5G;=#I
6=%\@
?"Hello, world!":END 2UR1T~r
v?d`fd
现代版BASIC(例如Quick BASIC): 9QD+
p*jH5h cy
Print "Hello, world!" ,*[N_[
bz1`f >%l
以下的语句在Quick BASIC中同样有效: 'Q*.[aJt
2*W|s7cc
? "Hello,world!" uKY1AC__
L{ej<0 yr
IM,d6lN6s
BCPL s4Jy96<
GET "LIBHDR" W T @XHwt
Vf(..8
LET START () BE OHY|< &*
$( \"I418T K
WRITES ("Hello, world!*N") 8VpmcGvc3
$) ;5|d[r}k3
p;%5 o0{1
h1Y^+A_
Befunge Qp@}v7Due
"!dlrow olleH">v
%U[H`E
, 6 {`J I
^_@ OgK' ~j
un`4q-S7
e6y!,My<
Brainfuck Dl?:Mh
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< #T>pu/EQX_
+++++++++++++++.>.+++.------.--------.>+.>. m8l!+8
Tv,ZS
v/7^v}[<
C f DXTedrG/
#include <stdio.h> e ?Jgk$"
yJw.z#bB#
int main(void) sVlQ5M oo(
{ #|V)>")
printf("Hello, world!\n"); H ~<.2b
return 0; F${}n1D
} F)aF.'$-/
'^Q$:P{G?
*\0h^^|@
C++ x9]vhR/av
#include <iostream> L8pKVr
ihct~y-9W
int main() ?5[$d{ Gjl
{ nGDY::nUE
std::cout << "Hello, world!" << std::endl; &`g^b^i
return 0; H-%
B<7
} =Q# (2
%4wHiCOg
Nah\4-75&
C++/CLI 8yswi[
int main() R<r,&X?m
{ Fbw.Y6
System::Console::WriteLine("Hello, world!"); 7?y([i\y
} ]<;y_
d|sf2
FbCuXS=+`
C# (C Sharp) 02[*b
class HelloWorldApp TD/ 4lL~(x
{ Wq25, M'
public static void Main() ayg^js2,
{ I!Fd~g9I4
System.Console.WriteLine("Hello, world!"); Vc8w[oS
} B;<zA' 1
} 5p7i9"tgn
KO))2GET
e[QEOx/-h2
COBOL yx<-M
IDENTIFICATION DIVISION. 4^^=^c
PROGRAM-ID. HELLO-WORLD. jU{~3Gn?
94lz?-j
ENVIRONMENT DIVISION. R$2\Xl@qQF
i66/2BUh.
DATA DIVISION.
S O`b+B
)'/xNR
PROCEDURE DIVISION. XS>( Bu
DISPLAY "Hello, world!". {P ==6/<2o
STOP RUN. 5',&8
.07kG]
[KEw5-=i@
Common Lisp rwpH9\GE
(format t "Hello world!~%") :?gp}.
(ul_bA+
%y+v0.aWH+
DOS批处理 bc6|]kB:
@echo off =>e>
r~cW
echo "Hello, world!" +[V.yY/t|>
.sZ"|j9m
Wm!cjGK
Eiffel \5#eBJ
class HELLO_WORLD A4)TJY
3g
5_rx$avm
creation /vLW{ %
make b~!Q3o'W
feature @n$/2y_.
make is 2t3)$\ylQp
local {T5u"U4
io:BASIC_IO }(#;{_
do F ^)(
7}ph
!!io Vo(bro4ZQi
io.put_string("%N Hello, world!")
*n9=Q9
end -- make #a 4X*X.8c
end -- class HELLO_WORLD Nfd'|#
nYTPcT4x|
3g3Znb
Erlang I9sQPa
-module(hello). .bNG:y>
-export([hello_world/0]). we33GMxHl`
u"U7aYGkY
hello_world() -> io:fwrite("Hello, World!\n"). cE*d(g
B*}:YV
2GRv%:rZ
Forth v+DXs!O{
." Hello, world!" CR NqN}] nu6
K#x|/b'5d
WS\Ir-B
Fortran S3y('
PeF
WRITE(*,10) eY`o=xN
10 FORMAT('Hello, World!') Hw,@oOh.
STOP l-8rCaq&J
END pE{Ecrc3|
3
5p)e c
R-Gg= l5
HTML 9bUFxSH
<HTML> +6(\7?
<HEAD> ;y-sd?pAk
<TITLE> Hello World! </TITLE> |0VZ1{=*
</HEAD> {Lsl2@22
<BODY> p<\7" SB=
<p>Hello World!</p> ,HK-mAH
</BODY> ]}9[ys
</HTML> G^le91$
G54`{V4&s
^(Wu$\SA
HQ9+ Upz?x{>x
H 7DWGYvv[
8Q73h/3
kK.[v'[>&
INTERCAL #1p\\Av
PLEASE DO ,1 <- #13 3qy4nPg
DO ,1 SUB #1 <- #238 ;eW\41 w
DO ,1 SUB #2 <- #112 sV]I]DR
DO ,1 SUB #3 <- #112 e_IRF+>
DO ,1 SUB #4 <- #0 ZQ_AqzT3D
DO ,1 SUB #5 <- #64 *_K*GCy
DO ,1 SUB #6 <- #238 ULzrJbP'7
DO ,1 SUB #7 <- #26 yKC1h`2
DO ,1 SUB #8 <- #248 1H8/b D
DO ,1 SUB #9 <- #168 Q6xA@"GJ
DO ,1 SUB #10 <- #24 Yb%#\.M/y
DO ,1 SUB #11 <- #16 vU9:`@beu
DO ,1 SUB #12 <- #158 L fZF
DO ,1 SUB #13 <- #52 ;]W@W1)$
PLEASE READ OUT ,1 ^`bMFsP
PLEASE GIVE UP c-ql
D"&Sd@a{
6>z,7 [
Java *$@u`nM
public class Hello A}(o1wuw
{ FzG>iC}
public static void main(String[] args) (btmg<WT"
{ H4<Q}([w
System.out.println("Hello, world!"); V+t's*9o3
} l\ VrD2j8
} gzN51B =D
`7R-2
w<b?
x7/";L>
JSP eU8p;ajW!L
<% $ByP 9=|
out.print("Hello, world!"); a`>H69(bU
%> }ldpudU
KCnm_4
I8uFMP
MIXAL kq@~QI?9
TERM EQU 19 the MIX console device number /dHIm`. Z
ORIG 1000 start address uc/W/c u,
START OUT MSG(TERM) output data at address MSG |mcc?*%t8
HLT halt execution pk0{*Z?@
MSG ALF "MIXAL" ^%!#Q].
ALF " HELL" y2=yh30L0E
ALF "O WOR" ~EU\\;1Rmq
ALF "LD " WWATG=
END START end of the program #\\|:`YV
<6X*k{
e0hY
Nuva ^,aI2vC
<..直接输出..> ER0B{b
Hello, world! `4g}(-
me-uPm
<..或者..> ri6KD
<,D*m+BWn
<. _tE55X&
// 不带换行 P~%+KxwZQ
? "Hello, world!" &0xM 2J
"uFwsjz&B
// 或者 dg_w$#
'c# }^@G
// 带换行 U>DCra;
?? 'Hello, world!' F6aC'<#/
.> KtGbpcS$f
!;0K=~(Y^
l2I%$|)d
OCaml 1xInU_SPf
let main () = #/{3qPN?@
print_endline "Hello world!";; BvUiH<-D
=}.gU WV
P>(FCX
Pascal ;; ;=)'o
program Hello; ?:G 3U\M
begin buT6)~lw
writeln('Hello, world!'); _n_()at)
end. AREjS$
s;$f6X
`46z D
?
Perl f+8 QAvh
#!/usr/local/bin/perl 'gHg&E9E&
print "Hello, world!\n"; Xj~%kPe
Ov^##E
~H1<