“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。 0@Kkl$O>mb
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将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 4e9q`~sO
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以下是用不同语言写成的Hello World程序的几个例子: xv7"WFb
Ada ;3C:%!CdA]
with Ada.Text_Io; use Ada.Text_Io; ;7Oi! BC
procedure Hello is X5g[ :QKP7
begin p4VSma_(
Put_Line ("Hello, world!"); PNSMcakD
end Hello; Eaad,VBtU
Ml>( tec
(Y(E%
汇编语言 f c6g
>u J/TQU
x86 CPU,DOS,TASM x O7IzqY
MODEL SMALL rsa&Oo
D>
IDEAL )R{UXk3q}
STACK 100H jw6Tj;c
7 gB{In0
DATASEG /)uM[ dnai
HW DB 'Hello, world!$' NE|[o0On
0=v{RQ;W4
CODESEG *Dr5O 9Y
MOV AX, @data +pqM ^3t|y
MOV DS, AX em2_pq9q
MOV DX, OFFSET HW M,:Bl}
MOV AH, 09H 5|$a =UIR
INT 21H wb"RB
A9
MOV AX, 4C00H LZ*R[
INT 21H ZEbLL4n
END =FW5Tkw0
;mAhY
}1+%_|Y-E
x86 CPU,GNU/Linux,NASM DlE_W+F
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). e<gx~N9l'
;Enter this into "hello.asm" then type: U=Bn>F}y\
;"nasm -f elf hello.asm" >qT 'z$
;"ld hello.o -o hello" klWYuStZ
;"./hello" +yt6(7V*
;_<)JqUh
section .data ;data section declaration JhR W[~
msg db 'Hello World!',0AH rVAL|0;3
len equ $-msg ;string length Uz8hANN0_
)WR_
ug
section .text ;code section declaration FuP/tTMU1a
global _start ;entry point (start of execution) & 7QH^
_start: mov edx,len ;string length 8V4V3^_xs
mov ecx,msg ;string start /c+)C"
mov ebx,1 ;file handle: stdout ;7G_f
mov eax,4 ;sys_write #\If]w*j
int 80h ;kernel system call %hT4qzJj
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_
mov ebx,0 ;return value 7el<5chZ
mov eax,1 ;sys_exit
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int 80h ;kernel system call n+2J Dq|?p
|Svk^m q
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x86 CPU,Windows,MASM32 6 o[/F3`
.386 ,&a`d}g&G
.model flat,stdcall "2HY5AE
option casemap:none 4?]oV%aP)
;Include 文件定义
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include windows.inc wFlV=!>,
include user32.inc DOL%'k ?B
includelib user32.lib Sw!
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include kernel32.inc & QZV q"
includelib kernel32.lib m =&j@
;数据段 (N U0Tw
.data M$CVQ>op:
szCaption db 'A MessageBox!',0 `"y{;PCt_
szText db 'Hello,world!',0 >BqCkyM9Kf
;代码段 ~-Oa8ww
.code ged,>
start: kC^.4n
om
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Z6=~1'<X
invoke ExitProcess,NULL &`:rp!Lc
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> P%o44|[][
end start +*EKR
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z<a2cQ?XQ
AWK !
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BEGIN { print "Hello, world!" } #w~0uCzQ@
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BASIC ?ei%RWo
传统版BASIC(例如GWBASIC): >riq98Us/
_Dq Qfc%
10 PRINT "Hello, world!" !7` [i
20 END _p4}<pG
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或在提示符输入: g{DFS[h
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?"Hello, world!":END J@bW^>g*6u
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现代版BASIC(例如Quick BASIC): SgSk!lj
x1DVD!0 ~{
Print "Hello, world!" _.f@Y`4d
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以下的语句在Quick BASIC中同样有效: zHxmA
9A;6x$s
? "Hello,world!" wA0eG@xi)
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vw
rRZ"2
BCPL %aLCH\e
GET "LIBHDR" :` <psvd
tBl#o ^
LET START () BE H'Iq~Ft1
$( a@SUi~+3
WRITES ("Hello, world!*N") 2NR7V*A
$) =K6c;
ta! V=U
<P pYl
Befunge U(3(ZqP
"!dlrow olleH">v 9A*rE.B+W
, DNho%Xk
^_@ Q eK{MF
T 'i~_R6
2
zl~>3S
Brainfuck 1#!@["
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< oWrE2U;
+++++++++++++++.>.+++.------.--------.>+.>. "z/V%ZK~f
;vUxO<cKFq
{h^c
C <[8@5 ?&&
#include <stdio.h> "
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:C}H y
int main(void) yam}x*O\xn
{ BA`:miH<
printf("Hello, world!\n"); T/7vM 6u
return 0; S2}Z&X(
} ZV#$Z
4@~a<P#
afy/K'~
C++ SEU\}Ni{
#include <iostream> K!7q!%Ju
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int main() SauHFl8?
{ zkG>u,B}
std::cout << "Hello, world!" << std::endl; 3*2I$e!Jt
return 0; GRQ_+K
} n>T:2PQ3
[edH%S}\
r+TK5|ke
C++/CLI aL 8Gnqf2
int main() ;&7,73!
{ y*(_\\
System::Console::WriteLine("Hello, world!"); CjmV+%b4
} 8qmknJC
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mLULd} g/o
C# (C Sharp) <4sj@C
class HelloWorldApp n`QO(pZ6+
{ $"1pws?d
public static void Main() `;}H%
{ q'2`0MRa
System.Console.WriteLine("Hello, world!"); @5GBuu^j
} cLHF9B5
} edTMl;4
9c6 '
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COBOL =1Ri]b
IDENTIFICATION DIVISION. ,P!D-MN$V
PROGRAM-ID. HELLO-WORLD. bm^X!i5
CX.SYr&!R
ENVIRONMENT DIVISION. SLg+H
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DATA DIVISION. hLSTSD}
(`F|nG=X
PROCEDURE DIVISION. jF4csO=E
DISPLAY "Hello, world!". (>mi!:
STOP RUN. ?^Pq/VtZ
'6+Edu~Ho)
j;G[%gi6{
Common Lisp L2d:.&5
(format t "Hello world!~%") Y[h#hZ
99a\MH`^
DQMPAj.
DOS批处理 O%prD}x
@echo off NA=#>f+U%
echo "Hello, world!" x!`b'U\
A1=_nt)5
zw,-.fmM#
Eiffel \a?K?v|8
class HELLO_WORLD [u7 vY@
PqVW'FYe
creation B%2L1T=
make <_>.!9q
feature (Hl8U
make is &0JK38(
local Y+5"uq<'
io:BASIC_IO .<HC[ls
do 487YaioB$
!!io ;m''9z)2
io.put_string("%N Hello, world!") E*OG-r
end -- make A3z/Bz4]:#
end -- class HELLO_WORLD YWSz84d
=?HzNA$yh
,%[LwmET
Erlang J"5jy$30'$
-module(hello). =w?M_[&K)
-export([hello_world/0]). ^l--zzO8l
zuk"
hello_world() -> io:fwrite("Hello, World!\n"). cxY$LY!zX
pXve02b1B
(1rJFl!
Forth TF%3uH
." Hello, world!" CR {x7=;-
wL Y#dm
%
Oz$_Xe
Fortran E(%
XVr0W
WRITE(*,10) I88Zrhw
10 FORMAT('Hello, World!') \QliHm!
STOP El'yiJ
END 75kKDR}6
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J6eJIKK
HTML w2 /* `YO
<HTML> g})6V
<HEAD> U@#?T
<TITLE> Hello World! </TITLE> /731.l
</HEAD> l6V%"Lo/)
<BODY> IhUW=1&J
<p>Hello World!</p> Cy<T Vk8
</BODY> L'13BRu`
</HTML> &S<?07Z
x)j/
SOhSg]g
HQ9+ ax<g0=^R
H LE8K)i
w~4
z@/^"p
=x=1uXQv5
INTERCAL yQ8M >H#J
PLEASE DO ,1 <- #13 ^I@ey*$
DO ,1 SUB #1 <- #238 ri"?,}(
DO ,1 SUB #2 <- #112 -T 2~W!
DO ,1 SUB #3 <- #112 ]vRVo6@ k
DO ,1 SUB #4 <- #0 +d@v
AxP
DO ,1 SUB #5 <- #64 giaD9$C
DO ,1 SUB #6 <- #238 xR*5q1j
DO ,1 SUB #7 <- #26 'uPxEu4 >4
DO ,1 SUB #8 <- #248 4,j4E@?pG9
DO ,1 SUB #9 <- #168 }PtI0mZ1
DO ,1 SUB #10 <- #24 Km[]^;6
DO ,1 SUB #11 <- #16 !O~},pp
DO ,1 SUB #12 <- #158 |)28=Z|Z
DO ,1 SUB #13 <- #52 W8Ke1(ws&
PLEASE READ OUT ,1 xR0~S
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PLEASE GIVE UP `kqT{fs
2~#ZO?jE6
L.SDM z
Java P=f<#l"v
public class Hello ,@}W@GGP)
{ 7J0 ^N7"o
public static void main(String[] args) U#8\#jo
{ YnKFcEJrT
System.out.println("Hello, world!"); ;X+G6F'
} "g
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} K.:6YXVs<
bk/.<Rt
j'G"ZPw1
JSP _pY
<% "
7l jc
out.print("Hello, world!"); :`{9x%o;
%> o%vIkXw
/IGrp.}
Q'FX:[@x-S
MIXAL ph Wc8[Q
TERM EQU 19 the MIX console device number I'KR'1z 9
ORIG 1000 start address #gxRTx
START OUT MSG(TERM) output data at address MSG ;yRwoTc)Y
HLT halt execution G/x3wR
MSG ALF "MIXAL" 2N6Pa(6
ALF " HELL" ,\|n=T,
ALF "O WOR" ^ %~Et>C
ALF "LD " T+&x{+gZ
END START end of the program qg_>`Bv"a
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LcQ\?]w`]
Nuva `6l24_eKf
<..直接输出..> ,XF6Xsg2
Hello, world! sN[@mAoH
T_;G))q'
<..或者..> 9N3oVHc?
K\%"RgF@&
<. N;Gf,pE
// 不带换行 BYA=M*f
? "Hello, world!" b}q(YgH<
-7Y'6''~W.
// 或者 , K"2tb
94>7-d
// 带换行 %y^Kw
?? 'Hello, world!' 1>O0Iu
.> `\/Wa h}I
#@OKp,LJ
xBx?>nN
OCaml B'#gs'fl
let main () = f@V{}&ZWp
print_endline "Hello world!";; U:\oGa84A
-<VF6k<
^/RM;`h0
Pascal P$#}-15?|_
program Hello; !nD[hI8P
begin mm9S#Ya
writeln('Hello, world!'); u[% J#S
end. B2+_F"<;
p44uozbK
fqp7a1qQl
Perl oz5lt4
#!/usr/local/bin/perl h"%,eW|^
print "Hello, world!\n"; }v|[h[cZ
qcoZ2VJ hh
&^Q~G>A
PHP N`mC_)
<?php 9%hB
print("Hello, world!"); f\%X7.
?> fJN9+l
uX5B>32
%L,,
Pike Q?'W >^*J
#!/usr/local/bin/pike Mh@ylp+q
int main() U";Rp&\3;
{ hFF&(t2{^
write("Hello, world!\n"); ynz5Dy.d;
return 0; ;]ZHD$g
} bsS|!KT
E52:c]<'m
ZCq\Zk1O&
PL/I mgl'
d
Test: procedure options(main); P_}_D{G
declare My_String char(20) varying initialize('Hello, world!'); 'aSORVq^e[
put skip list(My_String); L?5t<`#lw
end Test; ,kuFTWB
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#B{F{,vlu,
Prolog M)It(K8R
goal w@D@,q'x
write("hello,world!"). U%6lYna{M#
J-,X0v"
(?=(eo<N
Python ':fbf7EL<
#!/usr/local/bin/python k$mX81
print "Hello, world!" kUBHK"}K
(W6\%H2u
Xrs~ove1V
REXX h!3Z%M
say "Hello, world!" EG=>F1&M
'Z%aBCM
^hTJp{
Ruby x{w ?X.Nt
#!/usr/bin/ruby lP
&%5y;
print "Hello, world!\n" *8HxJ+[,[
!,WRXE&j
Ji:@z%osr
Scheme 0L-g'^nn
(display "Hello, world!") ~|jy$*m4A
(newline) Y\F H4}\S
-Q8`p
eJdQ7g[>
sed (需要至少一行输入) %6?}gc_
sed -ne '1s/.*/Hello, world!/p' =hb87g.
7q=xW6
yL,B\YCf8
Smalltalk R9HS%O6b6
Transcript show: 'Hello, world!' tG&B D\
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)W3l{T(
SNOBOL cSWVHr
OUTPUT = "Hello, world!" ;\0RXirk
END &~i
&~AJ
FV,SA3
mSp7H!
SQL {[iQRYD0|
create table MESSAGE (TEXT char(15)); N_}Im>;!
insert into MESSAGE (TEXT) values ('Hello, world!'); u>@G:kt8
select TEXT from MESSAGE; dg<fUQ
drop table MESSAGE; SpQ6A]M gm
"aH]4DO
$9$NX/P
Tcl gW%(_H mX
#!/usr/local/bin/tcl [X\2U4
puts "Hello, world!" b&&'b)
w%na n=
cE?J]5#^
TScript yx4c+(J^8
? "Hello, world!" cV,URUD
`_kRvpi
81C?U5
Turing ]C^*C|
put "Hello, world!" yIP
IA%dJ
6FAP *V;
/zAx`H
UNIX-style shell \|s/_35(
程序中的/bin/sh可改为您使用的shell :a`m9s 4
HRh".!lxy
#!/bin/sh o$;x[US
echo 'Hello, world!' 6jA Q
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|'#NDFI>}
GUI -JkO[IF
0}!lN{m?
Delphi *?\Nioii
program HelloWorld; <#Dc(VhT
uses ppS`zqq $
Dialogs; J(GLPC O$K
begin l1-FL-1
ShowMessage('Hello, World!'); MR: {Ps&,
end.
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Nq3P?I(<
s:{%1 /
Nuva *a4eL [
<. igCtq!.a
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) %kT:"j(xW
.> +/'jX?7x%
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