“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。 @L<*9sLWh
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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》。 ;X?}x%$
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以下是用不同语言写成的Hello World程序的几个例子: R;s?$;I
Ada l~c@^!
with Ada.Text_Io; use Ada.Text_Io; sGyeb5c
procedure Hello is b LlKe50
begin G_;)a]v8)
Put_Line ("Hello, world!"); Sj]T
end Hello; !\nBh
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v\KA'PmiP
汇编语言 .AR#&mL9
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x86 CPU,DOS,TASM t2/#&J]
MODEL SMALL 6IBgt!=,
IDEAL #pP[xE"Y
STACK 100H R)_%i<nq\
fol,xMc&
DATASEG tNO-e|~'
HW DB 'Hello, world!$' HJLu'KY}
M2PAy! J
CODESEG `NCwK6/i
MOV AX, @data RN$1bxY
MOV DS, AX /1"(cQ%?
MOV DX, OFFSET HW {G U&a
MOV AH, 09H .>=(' -
INT 21H <e Th
MOV AX, 4C00H 7&t-pv92*
INT 21H <'qeXgi
END !nqUBa
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.z]Wyx&/U
x86 CPU,GNU/Linux,NASM +]*zlE\N`
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ozmrw\_}[
;Enter this into "hello.asm" then type: UJD 0K]s
;"nasm -f elf hello.asm" (U&tt]|
;"ld hello.o -o hello" Li!Vx1p;u.
;"./hello" )m`<H>[Eb=
R n}l6kbM
section .data ;data section declaration
gp5_Z-me
msg db 'Hello World!',0AH *,e:]!*
len equ $-msg ;string length ]JCvyz
H
zz+$=(T:M
section .text ;code section declaration KC/=TSSXd.
global _start ;entry point (start of execution) -m)X]]~C
_start: mov edx,len ;string length pOGeruu?
mov ecx,msg ;string start v=0(~<7B
mov ebx,1 ;file handle: stdout GR&z,
mov eax,4 ;sys_write .:@Ykdm4I
int 80h ;kernel system call fKeT,U`W
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mov ebx,0 ;return value _7H7
dV
mov eax,1 ;sys_exit
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int 80h ;kernel system call 1;C+$
=Q+;=-1
NG--6\
x86 CPU,Windows,MASM32 2;zb\d
.386 A0o-:n Fu
.model flat,stdcall igkYX!0#8O
option casemap:none 1Yq?X:
;Include 文件定义 8B/\U'
include windows.inc s8ywKTR-
include user32.inc cv?06x{
includelib user32.lib q1z"-~i)E
include kernel32.inc w$+&3t
includelib kernel32.lib a6D &/8
;数据段 5~r33L%
.data MLoYnR^
szCaption db 'A MessageBox!',0 G}:w@}h/
szText db 'Hello,world!',0 p~SClaR3H
;代码段 wfNk=)^$
.code RX>xB
start: dYG,_ji
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK v'U{/ ,x
invoke ExitProcess,NULL '?!zG{x
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> O#F
end start Q9~*<I> h;
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AWK W?qmp|YD
BEGIN { print "Hello, world!" } "Om=N@?
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BASIC v>$'iT~ l
传统版BASIC(例如GWBASIC): >hPQRd
u])b,9&En
10 PRINT "Hello, world!" ZG>PQA
20 END V,mw[Hw
Z)! qW?
或在提示符输入: SLkhCR
: ]sUpO
?"Hello, world!":END **$LR<L
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现代版BASIC(例如Quick BASIC): o<[#0T^K
|_] Q$q[[%
Print "Hello, world!" 8kU!8^mH
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以下的语句在Quick BASIC中同样有效: N):tOD@B
;g @4|Ro
? "Hello,world!" {_`^R>"\&w
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gLE:g5v6
BCPL I,0q4
GET "LIBHDR" JBi*P.79^
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LET START () BE ,{BaePMp
$( s!?`T1L
WRITES ("Hello, world!*N") lBK}VU^
$) :[O
8
()5[x.xK@
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Befunge EH256f(&
"!dlrow olleH">v gu0j.XS^
, ^su<uG<R
^_@ n;@bLJ$W
fDT%!
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Brainfuck eO?p*"p" F
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< }
ud0&Oe{
+++++++++++++++.>.+++.------.--------.>+.>. kMb}1J0i"
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C XZsz/#
#include <stdio.h> >33=<~#n
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int main(void) lr`&mZ( j
{ qAn! Rk A
printf("Hello, world!\n"); pi
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return 0; MCS8y+QK
} ;D:9+E<>a
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C++ 4)@mSSfn.
#include <iostream> WU
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X$ s:>[H
int main() t=Xv;=daB
{ umiBj)r
std::cout << "Hello, world!" << std::endl; E%rk[wI
return 0; ;$smH=I
} d8[J@M53|T
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C++/CLI \6R,Nq
int main() w8MG(Lq1"
{ @JD;k>
System::Console::WriteLine("Hello, world!"); QR%mj*@Wle
} k< y>)
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C# (C Sharp) ~8GF Q ph
class HelloWorldApp XZ^^%*ew
{ {ys=Ndo8
public static void Main() {u#;?u=|
{ +kzo*zW$L
System.Console.WriteLine("Hello, world!"); j@SQ~AS
} $npT[~U5
} Dp)=0<$y
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Tk5W'p|6f
COBOL _F$aUtb%O
IDENTIFICATION DIVISION. VU&7P/\f%
PROGRAM-ID. HELLO-WORLD. U<DZ:ds?T
Cj{1H([-
ENVIRONMENT DIVISION. n=y[CKS
xx#zN0I>-y
DATA DIVISION. `< xn8h9p
"|q qUKJZ
PROCEDURE DIVISION. orWbU
UC
DISPLAY "Hello, world!". ;[M}MFc/`
STOP RUN. 9f&C
>pp5;h8!
"nw;NIp!
Common Lisp b[o"7^H
(format t "Hello world!~%") 6YGubH7%_
6]W=nAD
BYVY)<v/
DOS批处理 q,93nhs "
@echo off *X+79vG:
echo "Hello, world!" }a/x._[s
-uMSe~
L.S;J[a;
Eiffel " @v <Bk
class HELLO_WORLD p<,*3huj
M$/|)U'W
creation ^j31S*f&:
make +^=8ge}
feature 56zL"TF`
make is UA48Ug
local *>n;SuT_
io:BASIC_IO =;2%a(
do MP_ ~<Q
!!io ;C3US)j
io.put_string("%N Hello, world!") VGpWg rmHk
end -- make O(D~_O.
end -- class HELLO_WORLD 2O.i\cH
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ms*(9l.hOK
Erlang I%sFqh>
-module(hello). U%q7Ai7
-export([hello_world/0]). :,'wVS8"]
eZIhEOF
hello_world() -> io:fwrite("Hello, World!\n"). 9~]~#Uj
mlJ!:WG
5|o6v1bM
Forth wr$M$i:
." Hello, world!" CR j4jTSLQ\
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|=`~-i2W
Fortran /aZ+T5O
WRITE(*,10) aMWmLpv4'
10 FORMAT('Hello, World!') zO ).T
M_
STOP p i
%<Sy
END {^CY..3
A
y(CS5v#FG
{khqu:HUn`
HTML 5,_u/5Y4
<HTML> IsZHelg
<HEAD> }<@b=_>S
<TITLE> Hello World! </TITLE> d1AioQ9
</HEAD> oSyyd
<BODY> YwDbPX
<p>Hello World!</p> lQ" p !
</BODY> gkES5Q
</HTML> ="Ho%*@6
*AO,^R&e.
'EbWFMjy
HQ9+ jQ2Ot <
H gtk7)Uh
x=b7': nQ
tzZ`2pSh
INTERCAL &O9 |#YUq
PLEASE DO ,1 <- #13 H`1{_
DO ,1 SUB #1 <- #238 xe{!wX
DO ,1 SUB #2 <- #112 O_wEcJPE
DO ,1 SUB #3 <- #112 'p>Ra/4
DO ,1 SUB #4 <- #0 mZSD(
DO ,1 SUB #5 <- #64 _jLL_GD
DO ,1 SUB #6 <- #238 o]yl;I
DO ,1 SUB #7 <- #26 QZ6D7tUc8
DO ,1 SUB #8 <- #248 pR(jglm7-
DO ,1 SUB #9 <- #168 NidIVbT.A
DO ,1 SUB #10 <- #24 v|uAzM{73
DO ,1 SUB #11 <- #16 ABQ('#78
DO ,1 SUB #12 <- #158 2% L LSa
DO ,1 SUB #13 <- #52 YB(Q\hT~\;
PLEASE READ OUT ,1 p1Jh0o8
PLEASE GIVE UP b\yXbyjZ3.
06O2:5zF
JMrEFk
Java SxOC1+Oy
public class Hello TW)c#P43K
{ (s.0PO`
public static void main(String[] args) c6h.iBJ'
{ QRHu3w
System.out.println("Hello, world!"); {:6r;TB
} ,}3
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} W42iu"@
o /j*d3
(;T^8mI2
JSP :r{<zd>;
<% /]K^
rw[
out.print("Hello, world!"); a1EOJ^}0
%> &"yx<&c}
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MIXAL yv t.
TERM EQU 19 the MIX console device number ]A~WIF
ORIG 1000 start address [<n2Uz7MP
START OUT MSG(TERM) output data at address MSG (}Z@R#njH
HLT halt execution /rWd=~[MO
MSG ALF "MIXAL" ojcA<60
'
ALF " HELL" 8aK)#tNWN
ALF "O WOR" [tlI!~Z
ALF "LD " '(U-(wTC'/
END START end of the program |iak z|])
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Nuva t|g4m[kr
<..直接输出..> C 3^JAP
Hello, world! 6 Q%jA7
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<..或者..> Gr*r=s
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|
<. BmbyH{4
// 不带换行 cqQ#p2<%
? "Hello, world!" o_XflzC
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// 或者 pmuvg6@h
xN5)
// 带换行 `, OG7hg
?? 'Hello, world!' @5N]ZQ9
.> \y97W&AN
gH12[Us'`
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OCaml cS5Pl
let main () = ,]|#[ 8
print_endline "Hello world!";; j'Gt&\4
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Pascal '*K :
lx
program Hello; }tRm] w
begin 2L3)#22m*
writeln('Hello, world!'); /5S30 |K
end. sd*p/Q|4
gZN8!#h}B
9B{k , 1
Perl i+A3~w5c
#!/usr/local/bin/perl ~-ia+A6GIV
print "Hello, world!\n"; ]^yFaTfS
8[a=OP
<^VJy5>
PHP Luq#9(P
<?php Ur9?Td'*>
print("Hello, world!"); D9<!mH
?> N4v~;;@(
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PRx8I
.
Pike 2<i!{;u$qL
#!/usr/local/bin/pike '=39+*6?
int main() BL0 {HV!
{ caIL&G,
write("Hello, world!\n"); Z-^LKe
return 0; Y1OCLnK~
} (7vF/7BZ|_
= I:.X ;
hpHr\g
PL/I {:Orn%Q
Test: procedure options(main); ( Z619w
declare My_String char(20) varying initialize('Hello, world!'); Yrb{ByO&
put skip list(My_String); C].iCxn
end Test; Q8T]\6)m
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b,5~b&<h
Prolog .8@$\ZRP
goal (jnQ
-
write("hello,world!"). D[4u+g?[}>
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8NxM4$nQX
Python TITKj?*o
#!/usr/local/bin/python L9r8BK;
print "Hello, world!" J*r*X.
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w{Ivmdto
REXX ^hG-~z<
say "Hello, world!" UvJ}b
@'w"R/,n-@
C;;Sih5
Ruby c?tBi9'Y]
#!/usr/bin/ruby q_Q/3rh
print "Hello, world!\n" y0Fb_"}
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Scheme U\ ig:
(display "Hello, world!")
-?H#LUk
(newline) &b.=M>\9Q
F0pir(n-
hcgMZT!<5
sed (需要至少一行输入) 35A|BD)q
sed -ne '1s/.*/Hello, world!/p' ?8I?'\F;
zkt+7,vI
<->{
Smalltalk o15-ZzE-
Transcript show: 'Hello, world!' "~#3&3HVS
N,`$M.|?
,KF'TsFf
SNOBOL #pT"BSz]
OUTPUT = "Hello, world!" 7TgOK
END \MsTB|Z
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SQL (iBNZ7sJ
create table MESSAGE (TEXT char(15)); aEFJ;n7m
insert into MESSAGE (TEXT) values ('Hello, world!'); 68NYIyTW9
select TEXT from MESSAGE; $I!XSz"/e
drop table MESSAGE; c#XXp"7k2
!-z'2B*:^
1A?W:'N
Tcl mf
A{3
#!/usr/local/bin/tcl g$":D
puts "Hello, world!" #9B)Xx!g
J; 3{3
O%Scjm-^X
TScript y_'Ub{w
? "Hello, world!" j5QuAU8
.sxcCrQE
hP=WFD&
Turing I.WvLLK2
put "Hello, world!" 0m7Y>0wC6T
S(o#K|)>
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UNIX-style shell !lREaSM
程序中的/bin/sh可改为您使用的shell gcii9vz
`
q
VjdOY:z
#!/bin/sh e2L0VXbb
echo 'Hello, world!' 6}Vf\j~
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GUI $CxKuB(
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Delphi $Ad{Z
program HelloWorld; Eav[/cU
uses 2`AY~i9
Dialogs; ucuSe!IcX
begin :lX!\(E2
ShowMessage('Hello, World!'); H;D>|q
end. Qwz}B
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