“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。 LR\zy8y]
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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》。 hfh.eL
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以下是用不同语言写成的Hello World程序的几个例子: s7|3zqi
Ada R2Yl)2
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with Ada.Text_Io; use Ada.Text_Io; ni0LQuBp
procedure Hello is \-G5l+!
begin j ]HE>
Put_Line ("Hello, world!"); uTw|Q{ f
end Hello; {jhcZ"#>\
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5U;nhDmM
汇编语言 5m3'Gt4
/Tcb\:`9
x86 CPU,DOS,TASM ^yD"d =z
MODEL SMALL &vkp?UH
IDEAL f MzYFM'i
STACK 100H y&3TQ]f\
%/md"S
DATASEG kdd7Xbw-
HW DB 'Hello, world!$' kDg{>mf
wXcMt>3
CODESEG &@"w-M
MOV AX, @data rr)9Y][l}
MOV DS, AX NlMQHma
MOV DX, OFFSET HW ,W8au"
MOV AH, 09H tgfM:kzw
INT 21H H-m`Dh5{
MOV AX, 4C00H &]*|6cR$E
INT 21H RSFJu\0}N
END jDJ.
^
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aulaX/'-_
x86 CPU,GNU/Linux,NASM [[&)cbv
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). WRY~fM
;Enter this into "hello.asm" then type: ny~W]1
;"nasm -f elf hello.asm" .&L^J&V
;"ld hello.o -o hello" ^^'[%ok
;"./hello" 9Yd-m
CHg]U l
section .data ;data section declaration Z3Gm
msg db 'Hello World!',0AH ,NDxFy;d
len equ $-msg ;string length !rz)bd3$
l&$*}yCK
section .text ;code section declaration pNBa.4z:
global _start ;entry point (start of execution) Q{8qm<0g
_start: mov edx,len ;string length EuLXtq
mov ecx,msg ;string start A
mvw`u>
mov ebx,1 ;file handle: stdout 0|GpZuGO9
mov eax,4 ;sys_write
a2[8wv1
int 80h ;kernel system call b%<16 4i
yX3PUO9
mov ebx,0 ;return value |
[p68v>
mov eax,1 ;sys_exit "zXGp7Q'#
int 80h ;kernel system call Ys)+9yPPn
*|@+rbjVC
|z T%$
x86 CPU,Windows,MASM32 *WD;C0?z
.386 ,v|CombIc.
.model flat,stdcall v)%[
option casemap:none [Yn;G7cK
;Include 文件定义 N*HH,m&
include windows.inc u1wg
C#
include user32.inc Ko]QCLL
includelib user32.lib dRHlx QUn
include kernel32.inc S\}?zlV
includelib kernel32.lib #i@ACAgn;6
;数据段 otoBb^Mz
.data Q;=6ag'
szCaption db 'A MessageBox!',0 #`r(zI[
szText db 'Hello,world!',0 +_P8'e%Iy
;代码段 dEL3?-;'
.code 5Zzr5WM
start: F
ZM2
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK l&vm[3
invoke ExitProcess,NULL K*0aXr?
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> $+0=GN
end start lGl[^
0
iJEB?y
N\c&PS
AWK T4Xtuu1
BEGIN { print "Hello, world!" } 4,gol?a
G OH
,0BR-#
BASIC U8EJC
.e&O
传统版BASIC(例如GWBASIC): ;5-R=e(KA
!-F ^VGD(8
10 PRINT "Hello, world!" fFjL pl
20 END vU ?b"n
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或在提示符输入: xq#U4E
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?"Hello, world!":END nMTLD
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现代版BASIC(例如Quick BASIC): 8e]z6:}'E
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Print "Hello, world!" E"G:K`Q
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以下的语句在Quick BASIC中同样有效: <Z2(qZ^Z
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? "Hello,world!" '.=Wk^,Ua
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GU:r vS!
BCPL ,}eRnl\
GET "LIBHDR" sM#!Xl;
F_ ,L2J
LET START () BE ;r g H}r
$( x-w`KFS
WRITES ("Hello, world!*N") AD~~e%
s=
$) 5{8x*PSl
){+.8KI
zJz82jMm
Befunge i<B:
"!dlrow olleH">v 6F@zCv"w
, HyZVr2
^_@ i,mrMi
c#
ERUs0na]
1M7\:te*
Brainfuck e} sc]MTM
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ox!|)^`$_
+++++++++++++++.>.+++.------.--------.>+.>. JRHf.?
yjGGqz$
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C I{`KKui<M
#include <stdio.h> N$N;Sw
5%2ef{T[
int main(void) "Czz,;0
{ fR+Ov8PCq
printf("Hello, world!\n"); 73'U#@g6
return 0; R4&|t
} 3*CzXK>`M&
7JxE|G
Z}sG3p
C++ d9`3EP)n
#include <iostream> 1mT|o_K{ T
~C}(\8g
int main() ?2JS&i
{ z*Myokhf
std::cout << "Hello, world!" << std::endl; 9\AEyaJFZ
return 0;
1m&!l6Jk
} ^U-vD[O8
C1ZFA![
Sf+(1_^`t
C++/CLI zF[3%qZE:T
int main() bs<WH`P
{ Y{%4F%Oy
System::Console::WriteLine("Hello, world!"); )ZS:gD
} Qh)|FQ[s$r
g`%ED0aR
Zp/qs
z(]
C# (C Sharp) ^2&O3s
class HelloWorldApp Uq9,(tV`6g
{ wQF&GGYR
public static void Main() <7vI h0
{ &,m'sQ
System.Console.WriteLine("Hello, world!"); I><99cwFI
} xTa4.ZXg
} sh',"S#=@
L #t-KLJ
%f_)<NP9=
COBOL !~Hafn-1
IDENTIFICATION DIVISION. (hhdbf
PROGRAM-ID. HELLO-WORLD. 4FfwpO3,Ku
BxSk%$J
ENVIRONMENT DIVISION. U6/m_`nc
:0J-ek.;
DATA DIVISION. "'Q" (S
kr/1Dsr4
PROCEDURE DIVISION. eEZ|nEU
DISPLAY "Hello, world!". K B`1% =
STOP RUN. (&9DB
~ERRp3Ee?
m~= ]^e
Common Lisp cc2d/<:
(format t "Hello world!~%") ?`vM#)
t7U,AQ=;P5
4=?Ok":8
DOS批处理 ,wry u|7"$
@echo off 9G`FY:(K
echo "Hello, world!" 7$q2v=tH_
tF#b&za
+P>
A
P&
Eiffel X]+(c_i:hC
class HELLO_WORLD !Zk%P
f^[{k
{t
creation bMK#^ZoH
make Y\z^\k
feature ,p[\fT($]
make is nJ'>#9~a'>
local V'HlAQr
io:BASIC_IO #VQGN2bK.
do S`GXiwk
!!io C$AIP\j-
)
io.put_string("%N Hello, world!") Hnd9T(UB
end -- make )|{1&F1
end -- class HELLO_WORLD UtW"U0A
i(&6ys5
'y+bx?3Z
Erlang s60:0 >
-module(hello). NE=#5?6%g7
-export([hello_world/0]). r2E>sHw
6*(h9!_T1
hello_world() -> io:fwrite("Hello, World!\n"). vUo.BA#;.b
Y1U"HqNl*
t9f4P^V`
Forth {.' ,%)
." Hello, world!" CR ,<^tsCI
bG?WB,1
}<}`Q^Mlk
Fortran S2At$47v
WRITE(*,10) YaY;o^11/
10 FORMAT('Hello, World!') !7Yt`l$$z
STOP Ads<-.R
END ZVL-o<6
0w'y#U)&8
xu_XX#9?b
HTML U'h[{ek
<HTML> )L(d$N=Bd
<HEAD> vs'L1$L'c
<TITLE> Hello World! </TITLE> SSL%$:l@
</HEAD> \ ]kb&Qw
<BODY> bzj!d|T`
<p>Hello World!</p> +>i<sk
</BODY> )bIK0h
</HTML> S}v{^vR
y3@x*_K8
(Q h7bfd
HQ9+ mP5d!+[8
H Ch \ed|u
{'c%#\
WDH[kJ
INTERCAL u':0"5}
PLEASE DO ,1 <- #13 :m)Rmwn_
DO ,1 SUB #1 <- #238 E-tNB{r@
DO ,1 SUB #2 <- #112 } TX'Z?Lq
DO ,1 SUB #3 <- #112 D|Ih e%w-
DO ,1 SUB #4 <- #0 +SuUI-.
DO ,1 SUB #5 <- #64 ku[=QsMv
DO ,1 SUB #6 <- #238 x3I%)@-Z
DO ,1 SUB #7 <- #26 iu6WGmR
DO ,1 SUB #8 <- #248 Z@.ol Y
DO ,1 SUB #9 <- #168 }ygbgyLa
DO ,1 SUB #10 <- #24 #*>7X>,J
DO ,1 SUB #11 <- #16 @k:f}-t
DO ,1 SUB #12 <- #158 :AqnWy
DO ,1 SUB #13 <- #52 1<qVN'[
PLEASE READ OUT ,1 .X<"pd*@e
PLEASE GIVE UP 1n"+~N^\
RESGI}u
"13
:VTs[5
Java #/B~G.+(
public class Hello O275AxaN
{ IYM@(c@ld0
public static void main(String[] args) `~aLSpB65
{ CK!pH{n+
System.out.println("Hello, world!"); -B3wRAEt
} 9i2vWSga
} XvzV
lKL
)ejXeg
&PQ{e8w
JSP e/HX,sf_g
<% ZAo)_za&mH
out.print("Hello, world!"); Y%?!AmER
%> $ Pb[c%'
s!o<Pd yJK
y/sWy1P7
MIXAL 1O3<%T#LOZ
TERM EQU 19 the MIX console device number 1TxhE XB
ORIG 1000 start address AZ]SRz9mKY
START OUT MSG(TERM) output data at address MSG >gi{x|/
HLT halt execution ]O9f"cj
MSG ALF "MIXAL" Uwm[q+sTp
ALF " HELL" <T.3ZZ%
ALF "O WOR" h'YcNkM
2>
ALF "LD " Aya;ycsgE
END START end of the program /hEGk~
BE2\? q-
LN6 JH!
Nuva 0&rH 9
<..直接输出..> VGDEP!)-8
Hello, world! z5*O@_r+.b
5W]N]^v
<..或者..> f$@".
rW%'M#!
=
<. ~tj7zI6
// 不带换行 7jg(j~tQ
? "Hello, world!" qf&a<[p~
\q`+
// 或者 (B/F6
X;o.
IO)Ft
// 带换行 k2tX$ \E
?? 'Hello, world!' -WW!V(~p
.> ]'ApOp
CD<u@l,1
$
p1EqVu
OCaml rgZrE;*;
let main () = |xgCV@
print_endline "Hello world!";; 8H`l"
j&G~;(DY
)J6b:W
Pascal fi4/@tV?$L
program Hello; eP'kY(g8
begin sK9h=J;F/
writeln('Hello, world!'); -qCJwz30
end. ?>\]%$5o
$Q$d\Yvi
BLH3$*,H
Perl ,l?76g
#!/usr/local/bin/perl Dp6"I!L<|
print "Hello, world!\n"; 5~R{,]52
BiLreZ~"
FivaCNA
PHP uy-Ncy
<?php !/(}meZj
print("Hello, world!"); TtjSLkF
?> I8%'Z>E(
B)cb}.N:
ieF 0<'iF
Pike .-26 N6S
#!/usr/local/bin/pike v*]Xur6e}
int main() YK+Z0ry
{ .6/p4OR|
write("Hello, world!\n"); r|F,\fF
return 0; <@j
} Uus)2R7
np>!lF:
KeOBbe
PL/I (X7yNIPfA
Test: procedure options(main); HY| SLk/E
declare My_String char(20) varying initialize('Hello, world!'); ?#c@Ag%
put skip list(My_String); `V_/Cz_}D
end Test; :3*oAh8|
!skWe~/
+~k,4
Prolog 257;@;
goal i R5soIR
write("hello,world!"). k 5r*?Os
v;qL?_:=c
vHe.+XY
Python .MPOUo/e
#!/usr/local/bin/python O
xaua
print "Hello, world!" p[VCt" j
EGr5xR-
)3\rp$]1
REXX ZU@jtqq
say "Hello, world!" &ziB#(&:H
8A]q!To
`/Jr8J_
Ruby "lzg@=$|)
#!/usr/bin/ruby ] "vdC}
print "Hello, world!\n" iw;Alav"x
AezXou&
?iO^b.'I#
Scheme 7IW7'klkvD
(display "Hello, world!") cW/~4.v$
(newline) um;U;%?Q
AG%es0D[H
&|FG#.2yw
sed (需要至少一行输入) yXl.Gq>]{
sed -ne '1s/.*/Hello, world!/p' 2-2LmxLG
3lgyX/?o
vjWgR9 4/{
Smalltalk / ^M3-5@Q
Transcript show: 'Hello, world!' )tg*dE
.shI%'V
N5]68Fu'({
SNOBOL -*j;
OUTPUT = "Hello, world!" V"p*Jd"w
END Z{)|w=
2YEn)A@8
.kDCcnm
SQL ]V\g$@
create table MESSAGE (TEXT char(15)); bbA<Zp
insert into MESSAGE (TEXT) values ('Hello, world!'); $}o,7xAn
select TEXT from MESSAGE; yG_.|%e
drop table MESSAGE; ?&^l8gE
IN*Z__l8j`
&1n0(qB
Tcl ?Ir6*ZyY
#!/usr/local/bin/tcl \s rOU|
puts "Hello, world!" $jL.TraV7
uty]-k
L)"w-,zy
TScript [vJosbU;
? "Hello, world!" _\]UA?0
cl8Mv
w8zQDPVB%
Turing :{i mRa-
put "Hello, world!" #f@53Pxb
sAj$U^Gp
1x8]&
UNIX-style shell :udZfA\sW
程序中的/bin/sh可改为您使用的shell "q8'tN><