“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。 \/1~5mQ+
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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》。 ]CP5s5
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以下是用不同语言写成的Hello World程序的几个例子: v>K|hH
Ada ^iEf"r
with Ada.Text_Io; use Ada.Text_Io; h:Gs9]Lvtv
procedure Hello is ek)rsxf1A
begin wrJQkven-
Put_Line ("Hello, world!"); eM$a~4!d
end Hello; *P
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\_.'/<aQ
bP$e1I3`
汇编语言 ypM,i
7vgRNzZoq
x86 CPU,DOS,TASM s8(Z&pQ
MODEL SMALL /TbJCZ
IDEAL ^'Lp<YJs6
STACK 100H ^e "4@O"
%tkqWK:
DATASEG ;,Vdj[W$>
HW DB 'Hello, world!$' >;G_o="X
`ci
P
CODESEG iU.` TqR7
MOV AX, @data GX19GI@k
MOV DS, AX TH4f"h+B3"
MOV DX, OFFSET HW 5Zc
MOV AH, 09H (Ajhf}zJ
INT 21H 7]u_
MOV AX, 4C00H 8u[.s`^
INT 21H ,%m~OB#
END :fX61S6)
fC^d@4ha
zhE4:g9v
x86 CPU,GNU/Linux,NASM LkeYzQH/l
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ;N!n06S3
;Enter this into "hello.asm" then type: jY9tq[~/
;"nasm -f elf hello.asm" ,f>^q"
;"ld hello.o -o hello" !K_<7iExI\
;"./hello" :;#^gvH
,EH-Sf2Cb
section .data ;data section declaration aG"
msg db 'Hello World!',0AH P[`>*C\9c
len equ $-msg ;string length L) _ VdB
9%k4Ic%P
section .text ;code section declaration oMn'{+(w
global _start ;entry point (start of execution) 31g1zdT!
_start: mov edx,len ;string length JKYtBXOl
mov ecx,msg ;string start r+]a
mov ebx,1 ;file handle: stdout 2DZ&g\|
mov eax,4 ;sys_write DS|x*w'I
int 80h ;kernel system call |Qpo[E}a
2#`d:@r
mov ebx,0 ;return value 6(Cjak+~!
mov eax,1 ;sys_exit 50S*_4R
int 80h ;kernel system call <+ <o
X"I
]~m=b`o
l 9rN!Q|
x86 CPU,Windows,MASM32 C`oB [
.386 %&O'>L
.model flat,stdcall aIfB^M*c5
option casemap:none E&vCzQ
;Include 文件定义 @bFl8-
include windows.inc \<=.J`o{
include user32.inc kvN6K6
includelib user32.lib fb]=MoiJ
include kernel32.inc z_&T>ME
includelib kernel32.lib n 8|
;数据段 xNVSWi,
.data Iak06E
szCaption db 'A MessageBox!',0 toox`|
szText db 'Hello,world!',0 MIv,$
;代码段 /3`fO^39Ta
.code {2&MyxV
start: 6:TA8w|
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK SMm$4h R
invoke ExitProcess,NULL Sj'.)nz>
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 'Ya- ;5Y]
end start "FfP&lF/
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ubi6=
AWK +m6acu)N.
BEGIN { print "Hello, world!" } @v\jL+B+m
A%#."2vq~
Fo|
rRI2
BASIC %aJ8wYj*
传统版BASIC(例如GWBASIC): 4vPKDd
1b"3]?
10 PRINT "Hello, world!" Q"{Q]IT
20 END r%oXO]X
I#t#%!InH
或在提示符输入: u&Y1,:hiL
) ]]PhGX~
?"Hello, world!":END ~M J3-<I
x@"`KiEUs
现代版BASIC(例如Quick BASIC): 7y>{Y$n
N%8aLD
Print "Hello, world!" *&yt;|y
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以下的语句在Quick BASIC中同样有效: E@ !~q
=^3B&qQNq
? "Hello,world!" WPNvZg9*c
^cYt4NHXn
PxZMH=
BCPL wo!;Bxo
N
GET "LIBHDR" ehYGw2
[]eZO_o6j
LET START () BE bMF`KRP2
$( 9RN! <`H
WRITES ("Hello, world!*N") 2Y{r2m|o
$) _M}}H3
|/p2DU2
/H[ !v:U
Befunge $P~Tt 4068
"!dlrow olleH">v 3MFb\s&Fq
, SQVyCxcX_
^_@ 'x\{sv
|h1Y3
w4p<q68
Brainfuck FZhjI 8+,~
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< !_UBw7Zm
+++++++++++++++.>.+++.------.--------.>+.>. P&]PJt5
I!-5
#bxD
BnLE+X
C _LSf
)
#include <stdio.h> ;*EPAC+
lvZ:Aw
r
int main(void) *6%r2l'kZ
{ :>otlI<0t
printf("Hello, world!\n"); q'awV5y
return 0; E#cZM>
} .9;wJ9Bw[
.EQ1r7
9,
k%?A=h
C++ eMC0
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#include <iostream> _-g?6q
@=1kr ^i
int main() 9gokTFoN
{ -{XXU )Z
std::cout << "Hello, world!" << std::endl; ' fm}&0
return 0; .FXn=4l'vV
} DN;An0
{MK
zmMz6\ $
C %o^AR
C++/CLI gkyv[
int main() &-0eWwMW
{ Fps.Fhm
System::Console::WriteLine("Hello, world!"); GT"gB$Mh
} 7 V+rQ
F[SYs/M
HJu;4O($
C# (C Sharp) wmr8[n&c
class HelloWorldApp ^yB>0/{)z
{ U$(AZ|0
public static void Main() (GdL(H#IL
{ \hwz;V.J"
System.Console.WriteLine("Hello, world!"); x GHS
} RGim):1e
}
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jFBnP,WQ
o!+jPwEU
COBOL R\wG3Oxol
IDENTIFICATION DIVISION. lx&ME#~
PROGRAM-ID. HELLO-WORLD. 7Q9zEd"d
\WeGO.i-
ENVIRONMENT DIVISION. ?0VLx,kp
BK1Aq3*)
DATA DIVISION. Qm\VZ<6/5
i`1QR@11
PROCEDURE DIVISION. G6b\4}E
DISPLAY "Hello, world!". n3kYVAgF
STOP RUN. M6J/S
CL$mK5u
tCdgtZm
Common Lisp :8~*NSEFd
(format t "Hello world!~%") \;>idbV
&v^LxLt+s
E}$K&<J'-
DOS批处理 -l!;PV S|
@echo off QDC]g.x
echo "Hello, world!" >Cjb|f3'i}
W%=b|6E
T?+xx^wYk
Eiffel vO)nqtw
class HELLO_WORLD y^oSVj
Y`u.P(7#
creation q)uq?sZe
make @"m?
#
feature IYy2EK[s
make is ^vmyiF
local o|nj2 .
io:BASIC_IO 5[|MO.CB$
do 8L?35[]e
!!io ? 1g<] ?
io.put_string("%N Hello, world!") )up!W4h6o
end -- make Z=Oo%lM6B
end -- class HELLO_WORLD 2EOt.4cP
;TK:D=p4
,zLi{a6
Erlang /EOtK|E
-module(hello). {qm(Z+wcmb
-export([hello_world/0]). b7/1]
@GYM4T
hello_world() -> io:fwrite("Hello, World!\n"). :LL>C)(f
vTD`Ja#h
yS#LT3>l
Forth )h~MIpWR
." Hello, world!" CR SZCFdb
?hS n)
m#'2
3
Fortran W)F2X0D>
WRITE(*,10) Vl!Z|}z
10 FORMAT('Hello, World!') 7K`A2
STOP L44-: 3
END a<[@p
1@H3!V4
MdWT[
HTML Zjt3U;Y
<HTML> +[JGi"ca
<HEAD> pbivddi2
<TITLE> Hello World! </TITLE> eA>O<Z1>
</HEAD> '$M=H.
<BODY> :Q\b$=,:
<p>Hello World!</p> Xv'M\T}6C+
</BODY> bf
`4GD(
</HTML> DB yRP-TH
+>oVc\$
aT#R#7<Eg
HQ9+ 5w`v
3o
H YXH9Q@Gn
<BQ4x.[
6ZVJ2xs[%
INTERCAL .3,s4\.kT
PLEASE DO ,1 <- #13 JQ%`]=n(/
DO ,1 SUB #1 <- #238 iuq-M?1
DO ,1 SUB #2 <- #112 Z^AACKME
DO ,1 SUB #3 <- #112 i` Es7 }
DO ,1 SUB #4 <- #0 }`yIO"{8n
DO ,1 SUB #5 <- #64 :JqH.Sqk
DO ,1 SUB #6 <- #238
,|b<as@X
DO ,1 SUB #7 <- #26 lhx6+w
DO ,1 SUB #8 <- #248 L^VG?J
DO ,1 SUB #9 <- #168 <!&&Qd-d6H
DO ,1 SUB #10 <- #24 DL2gui3
DO ,1 SUB #11 <- #16
;KmSz 1A
DO ,1 SUB #12 <- #158 POc<
G^
DO ,1 SUB #13 <- #52 S@zsPzw
PLEASE READ OUT ,1 E'e#axF;
PLEASE GIVE UP Hq^sU%
>U9*
r9G<HKl
Java TE0hVw0c
public class Hello g!<@6\RB
{ .8CR
\-
public static void main(String[] args) l?B\TA^
{ lC.Yu$O5
System.out.println("Hello, world!"); @Q3aJ98)2
} &?*M+q34
} AFl]w'=
jR\T\r4
ekfD+X
JSP u9e A"\s
<% r 9@W8](\
out.print("Hello, world!"); j%b/1@I
%> O GrVy=rd
[,-MC7>]
#P-S.b
MIXAL W z3y+I/&
TERM EQU 19 the MIX console device number 'uBW1,
ORIG 1000 start address L!DP*XDp
START OUT MSG(TERM) output data at address MSG ?DkMzR)u
HLT halt execution D2~e@J(K
MSG ALF "MIXAL" H__9%p#
ALF " HELL" ~d7!)c`z
ALF "O WOR" [X=-x=S,
ALF "LD " ]E88zWDY`
END START end of the program ooByGQ90V:
)=;0
on+
c*#
Nuva <r,l
<..直接输出..> 4W~pAruwr
Hello, world! 9rtcI[&?0
$ W(m
<..或者..> gec<5Ewg
zMKW@
<. 29pIO]8;
// 不带换行 +BM (0M+
? "Hello, world!" Dq
Kk9s;6_
f5Zx:g
// 或者 z![RC59S
BM1uZJ0
// 带换行 "Sc_E}q|e
?? 'Hello, world!' Ta%{Wa\U9z
.> qp^O\>c
xRJv_=dT
"Q#/J)N
OCaml 'i{kuTv
let main () = d5%A64?
print_endline "Hello world!";; "MKgU[t
"o`N6@[w^
8,#v7ns}#
Pascal ;_,=
program Hello; `pE~M05
begin %.BbPR 7?h
writeln('Hello, world!'); a{QHv0goG
end. %s%v|HDs
AIF?+i%H}
jhUab],
Perl pA+W
8v#*
#!/usr/local/bin/perl sbrU;X_S
print "Hello, world!\n"; {$ HW_\w
&|IY=$-
)Rn}4)9!iT
PHP 7Nw7a;h
<?php j{IAZs#@>
print("Hello, world!"); gpe^G64c`
?> IR?ICXmtx
Y>{K2#k
RN'|./N
Pike
|%g^6RN
#!/usr/local/bin/pike Ni'vz7j
int main() #q%xJ[
{ c</d1x T
write("Hello, world!\n"); OnC|9
return 0; ]ZelB,7q
} _0 USe
(01M 0b#
~C{d2i
PL/I bPAp0}{Fu
Test: procedure options(main); :O{`!&[>L
declare My_String char(20) varying initialize('Hello, world!'); *{P"u(K
put skip list(My_String); ,o]"G[Jk
end Test; v-3In\T=^
jmmm0,#D
4WG~7eIgy
Prolog !uii|"
goal @3K)VjY7
write("hello,world!"). 5u
MP31
4$+1jjC]>~
_y#t[|}w
Python p-GlGEt_X
#!/usr/local/bin/python -]~&Pi