“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。 %<+uJ'pj
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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》。 4b((,u$
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以下是用不同语言写成的Hello World程序的几个例子: WT")tjVKA
Ada _|cSXZ|
with Ada.Text_Io; use Ada.Text_Io; jkta]#O
procedure Hello is Otx>S' 5
begin kX`m(
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Put_Line ("Hello, world!"); N*6~$zl&
end Hello; Z 4i5,f
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汇编语言 S.B?l_d^
nM:<l}~v{
x86 CPU,DOS,TASM U`8Er48X
MODEL SMALL WagL8BpLx
IDEAL XP0;Q;WF}
STACK 100H rQGInzYp
i+in?!@G:
DATASEG !Q_Wbu\U
HW DB 'Hello, world!$' G`jvy@
b_6cK#
CODESEG K]Vp! G
MOV AX, @data )=X g
MOV DS, AX W)J5[p?
MOV DX, OFFSET HW P0(LdZH6u
MOV AH, 09H @1&"S7@}u
INT 21H tU2#Z=a
MOV AX, 4C00H 'J-a2oiM(
INT 21H m;hp1VO)
END 7&wxnxSk^
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x86 CPU,GNU/Linux,NASM o _l_Yi
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). }CMGK{
;Enter this into "hello.asm" then type: ZzTkEz >
;"nasm -f elf hello.asm" tP*GYWI48
;"ld hello.o -o hello" <2%9O;bV[
;"./hello" F[%k;aJ
\P9ms?((A
section .data ;data section declaration `''y,{Fs
msg db 'Hello World!',0AH }uC]o@/
len equ $-msg ;string length 3.hFYA w
^BRqsVw9
section .text ;code section declaration mDZA\P_
global _start ;entry point (start of execution) r-xP6
_start: mov edx,len ;string length lw}7kp4
2F
mov ecx,msg ;string start ER~RBzp
mov ebx,1 ;file handle: stdout G~bDl:k`A
mov eax,4 ;sys_write O CIoY?a
int 80h ;kernel system call yocFdI
0A~UuH0.
mov ebx,0 ;return value 3(|,:"9g
mov eax,1 ;sys_exit $N}t)iA
int 80h ;kernel system call Ab/JCZNn
D}X6I#U'/
wd<{%qK`{
x86 CPU,Windows,MASM32 H~vrCi~t"
.386 +
jeOZ
.model flat,stdcall 4%8den,|
option casemap:none ?E+f<jol
;Include 文件定义 u kZK*Y9P
include windows.inc CadIux^
include user32.inc %xG<hNw/
includelib user32.lib nh5=0{va|L
include kernel32.inc _izjvg
includelib kernel32.lib g] }!
;数据段 bHx@
.data tJ6Q7
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szCaption db 'A MessageBox!',0 ~8mz.ZdY
szText db 'Hello,world!',0 EK[J!~
;代码段 `[#id@Z1
.code ]1>R8
start: chUYLX}45
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK !03JA 9lo
invoke ExitProcess,NULL ;L -)$Dy4
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> #\}FQl6
end start Ug546Bz
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#X%!7tU6
AWK p U !:
BEGIN { print "Hello, world!" } y9R%%i
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BASIC (BxmV1
传统版BASIC(例如GWBASIC): w:deQ:k
{'h&[f>zcQ
10 PRINT "Hello, world!" v&/H6r#E.
20 END :7"Q
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或在提示符输入: )D/,QWk
w}OBp^V^
?"Hello, world!":END %Gyn.9\
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现代版BASIC(例如Quick BASIC): bQq/~
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Print "Hello, world!" ||wi4TP
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以下的语句在Quick BASIC中同样有效: :*|Ua%L_
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? "Hello,world!" 9DM,,h<`
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bfoTGi
BCPL uHZ4
@w:
GET "LIBHDR" 6.KEe^[-
CR9wp]-Vd
LET START () BE %PB{jo
$( '/03m\7
WRITES ("Hello, world!*N") snfFRc(RE
$) B'(zhjV
zz(|V
RnRUJNlaG
Befunge ak|
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"!dlrow olleH">v K/N{F\
, =:w,wI.
^_@ F_R\
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j|Vl\Z&o)
Brainfuck jxkQ #Y
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< &uO-h
+++++++++++++++.>.+++.------.--------.>+.>. h~9P34m
9m2FH~
cf"&22TQ+Z
C E%D .a=UX,
#include <stdio.h> |k*bWuXgLs
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int main(void) -`\^_nVC
{ {'M/wT)FeC
printf("Hello, world!\n"); YQHpW>z
return 0; tl!dRV92
} AQQa6Ce*
PcT]
DMch88W
C++ \SQ4yc
#include <iostream> g3[-[G^5
([rn.b]
int main() VPT?z
{ wS9V@
std::cout << "Hello, world!" << std::endl; rYdNn0mhk
return 0; fu~iF
} f9>pMfi:@
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zGg)R
C++/CLI Yu)GV7\2
int main() {X?1}5ry
{ SS`\_@ci
System::Console::WriteLine("Hello, world!"); )mOM!I7D@
} weu+$Kr
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C# (C Sharp) -['& aey}a
class HelloWorldApp yeta)@nH
{ Un)Xe
public static void Main() Yq|_6zbYf
{ ;-py h(
System.Console.WriteLine("Hello, world!");
hO.b?>3NL
} L7(FDv,?
} e/+.^ '{
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COBOL [DeDU:
IDENTIFICATION DIVISION. nF]R"
PROGRAM-ID. HELLO-WORLD. VvP: }yJ
A. tGr(r
ENVIRONMENT DIVISION. }ixCbuD
q#c+%,Z=C
DATA DIVISION. U&R)a|
7R
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PROCEDURE DIVISION. ySiZ@i4
DISPLAY "Hello, world!". Y(1?uVYW\d
STOP RUN. &)tv4L&
C)yw b6
ZLKbF9lo
Common Lisp xL.m<XDL
(format t "Hello world!~%") 0Mn|Yb4p
r7_%t_O|IL
$X Uck[
DOS批处理 \Q}Y"oq
@echo off U.~G{H`G,u
echo "Hello, world!" FywX
u5rvrn ]
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Eiffel =kwz3Wv
class HELLO_WORLD l(Hz9
# =y)Wuo=
creation hVB(*WA^D
make s92ol0`
feature ^}vf
make is @UdF6:T
local tpA-IL?KQw
io:BASIC_IO ~Y~M}4
do [+b8
!'|&
!!io #0h}{y
E
io.put_string("%N Hello, world!") -U$;\1--
end -- make hTEb?1CXU
end -- class HELLO_WORLD s Adb0 A
}8}`A\dgV
J^#g?RHN>m
Erlang N\tFK*U^I
-module(hello). 2eRk_j]
-export([hello_world/0]). j]%XY+e
t D
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hello_world() -> io:fwrite("Hello, World!\n"). xa]yq%
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_fn7-&6
Forth PeiRe
." Hello, world!" CR >JA-G@3i
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:!CnGKgt
Fortran #=)>,6Zw
WRITE(*,10) 8,h!&9
10 FORMAT('Hello, World!') 29G el
STOP +Z_VF30pa
END alzdYiGf
G~&8/ s
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HTML [ t8]'RI%
<HTML> J{a9pr6
<HEAD> =c,7uB
<TITLE> Hello World! </TITLE> JBc*m
</HEAD> *wJz0ex7R/
<BODY> _(:$
:*@
<p>Hello World!</p> &D-z|ZjgHi
</BODY> U&*%KPy`
</HTML> 9L-jlAo<
VR"le&'z"
\X(*JNQ
HQ9+ K@[Hej6d
H T?A3f]U
aYk: CYQ
A+H8\ew2,
INTERCAL l\N2C4NG
PLEASE DO ,1 <- #13 C`qV+pV
DO ,1 SUB #1 <- #238 JURu>-i
DO ,1 SUB #2 <- #112 l9j=;h
DO ,1 SUB #3 <- #112 HWFTI /]
DO ,1 SUB #4 <- #0 *(vh |
DO ,1 SUB #5 <- #64 [h
B$%i]\<
DO ,1 SUB #6 <- #238 862rol
DO ,1 SUB #7 <- #26 ]i,o+xBKH
DO ,1 SUB #8 <- #248 @C=gMn.E
DO ,1 SUB #9 <- #168 vAop#V
DO ,1 SUB #10 <- #24 AH'3
5Kf)
DO ,1 SUB #11 <- #16 0x*|X@6\
DO ,1 SUB #12 <- #158 o>+ mw| {
DO ,1 SUB #13 <- #52 FY)]yz
PLEASE READ OUT ,1 3]}RjOTU
PLEASE GIVE UP M?('VOy)
Br<lP#u=G
:}#)ipr
Java 4DL2
A;T
public class Hello a0A=R5_
{ * Z)j"i
public static void main(String[] args) 4|Y1W}!0/
{ 1VG]|6f
System.out.println("Hello, world!"); t(6i4c>
} wRK27=\z
} |${ImP
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JSP {=J:
<% }C["'tLX
out.print("Hello, world!"); EAWBgOO8iC
%> %}~(%@qB>+
)'7Qd(4WT
?A .ah
MIXAL %c]N-
TERM EQU 19 the MIX console device number =\ 5f_g2M
ORIG 1000 start address c,)]!{c
START OUT MSG(TERM) output data at address MSG 2$t%2>1>@
HLT halt execution Gi@c`lRd1
MSG ALF "MIXAL" Jwj=a1I 53
ALF " HELL" 3gJZlH5IR
ALF "O WOR" bV'r9&[_6
ALF "LD " tfm3IX
END START end of the program #M#$2Vt
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a!u5}[{
Nuva Rq?t=7fX)
<..直接输出..> H!"TS-s`
Hello, world! g$Vr9MH
V)5,E>;EN
<..或者..> ofz?L#:2
Q*'OY~
<. ;0 +Dx~
// 不带换行 km^ZF<. @
? "Hello, world!" SS_6VE*sI
.ej+?QYwC
// 或者 p9\*n5{
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// 带换行 x11r iK
?? 'Hello, world!' `@,Vbn^_
.> G[_Z|Xi1
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v,~fG>Y}
OCaml +`mI\+y,
let main () = GA[bo)"
print_endline "Hello world!";; qq[Dr|%7
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<u#
7K\:
Pascal @ %q>Jd
program Hello; ve.P{;;Ky
begin c\ZnGI\|
writeln('Hello, world!'); 7\nXJ381
end. ;+o6"ky5
#CyqiOM\*
cAVdH{$"
Perl lMg#zT!?
#!/usr/local/bin/perl $II~tO
print "Hello, world!\n"; )~nieQEZQ
{wz_ngQ
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PHP p__N6a
<?php rL+.3ZO):P
print("Hello, world!"); {
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?> H~Uy/22aQy
(LXYx<
1L7^g*
Pike SG0PQ
#!/usr/local/bin/pike t7V7 TL!5'
int main() (64es)B}"
{ kv?DE4=;
write("Hello, world!\n"); a{JO8<dlm
return 0; 1Q9Hs(s
} JqYa~6 C
>YF=6zq.`
[^/a`Kda8
PL/I 2_M+o]Z^
Test: procedure options(main); }o[<1+W(.
declare My_String char(20) varying initialize('Hello, world!'); *0V'rH)
put skip list(My_String); {t|#>UCK
end Test; &^ s8V]^
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*O[/-
p&7
Prolog @8A[HP
goal O%F*i2I:+k
write("hello,world!"). YvP62c \
9~a 5R]x2
P-8QXDdr
Python &u6n5-!v
#!/usr/local/bin/python =i;T?*@
print "Hello, world!" OpIeo+^X*
/P]N40_@
%Kp^wf#o9
REXX :kwDa
a
say "Hello, world!" .J+F
HG'
1:@ScHS
ke<5]&x
Ruby Nvh&=%{g
#!/usr/bin/ruby 15' fU!
print "Hello, world!\n" 9!Xp+<
>*!^pbZfX
mU]^PC2[
Scheme }ALli0n`V)
(display "Hello, world!") V3a6QcG
(newline) Bx$?*y&f!v
+$2`"%nBG
m9&%A0
sed (需要至少一行输入) ocUBSK|K)
sed -ne '1s/.*/Hello, world!/p' ov Xk~%_
o>Dd1
j
X*5N&AJ
Smalltalk \l
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Transcript show: 'Hello, world!' M_r[wYt!
zx.SRs$
"sY}@Q7
SNOBOL y>gw@+
OUTPUT = "Hello, world!" U&a(WQV9&
END &1`Y&x:p
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v.u 5%
SQL Xrpvq(]
create table MESSAGE (TEXT char(15)); C>,> _
insert into MESSAGE (TEXT) values ('Hello, world!');
! R3P@,j
select TEXT from MESSAGE; |Sua4~yL(
drop table MESSAGE; =#<bB)59
U^U
hZ!
-:J<JX)o
Tcl 72*j6#zS
#!/usr/local/bin/tcl KMQPA>w#
puts "Hello, world!" ('\sUZ+5
|R!ozlL{}
k9:|CEP
TScript 49}WJC7
)
? "Hello, world!" lB_X mI1t
~82 {Y
_{/
C-h?#/#?y
Turing zfg+gd)Z
put "Hello, world!" @M'qi=s*
@v&