“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。 '-_tF3x
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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》。 =r^Pu|
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以下是用不同语言写成的Hello World程序的几个例子: $|7;(2k
Ada eNr2-R
with Ada.Text_Io; use Ada.Text_Io; SeBl*V
procedure Hello is 4_ kg/
begin o(g}eP,g}
Put_Line ("Hello, world!"); _cd=PZhI
end Hello; *yN#q>1
3<}r+, j
9''x'E=|
汇编语言 K'b #}N\
[y(<1]i-a
x86 CPU,DOS,TASM Z=^~]Mfa
MODEL SMALL FH7l6b,^
IDEAL 3($tD*!o
STACK 100H XT{ukEvDR
ij02J`w:Ra
DATASEG d#:7V%]dp
HW DB 'Hello, world!$' BP8jReX^
&o7"L;
CODESEG h:4F?'W
MOV AX, @data 'nfdOX.d
MOV DS, AX }nMp.7b
MOV DX, OFFSET HW r~PVh?
MOV AH, 09H y@Ak_]{b
INT 21H "2hs=^&8
MOV AX, 4C00H b21@iW
INT 21H &cT@MV5
END .r \g]
5XinZ~
b.QL\$a
&
x86 CPU,GNU/Linux,NASM 3W55m@w
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 0E/16@6=
;Enter this into "hello.asm" then type: kNv/L$oG
;"nasm -f elf hello.asm" YeVkX{y
;"ld hello.o -o hello" hd#MV!ti
;"./hello" II{"6YI>
zj7?2
section .data ;data section declaration $zJ!L
msg db 'Hello World!',0AH M6z$*?<
len equ $-msg ;string length :$N{NChx
EsjZ;D,c(
section .text ;code section declaration NkYC( ;g
global _start ;entry point (start of execution) d5qGTT ~a
_start: mov edx,len ;string length ;I]$N]8YI
mov ecx,msg ;string start U9x6\Iy
mov ebx,1 ;file handle: stdout {hBnEj^@
mov eax,4 ;sys_write 2\9OT>
int 80h ;kernel system call Io]KlR@!T
"T' QbK0
mov ebx,0 ;return value b2UqN]{
mov eax,1 ;sys_exit P/T`q:<H
int 80h ;kernel system call "1ov<
N`NW*~
y:,m(P
x86 CPU,Windows,MASM32 Fqg*H1I[
.386 q;9OqArq
.model flat,stdcall m" c6^)U
option casemap:none r<EwtO+x
;Include 文件定义 \>c1Z5H>
include windows.inc a`8svo;VUO
include user32.inc <&iLMb:%
includelib user32.lib /gq\.+'{
include kernel32.inc i#(+Kxr]>
includelib kernel32.lib 8W}rSv+
;数据段 UOkVU*{
.data gCv[AIE_m
szCaption db 'A MessageBox!',0 7x)32f"
szText db 'Hello,world!',0 QUz_2rN^
;代码段 pzcof#2
.code gwN
y]!
start: ?EA&kZR]
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 6yhRcvJ}
invoke ExitProcess,NULL V*1-wg5>
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> F{F SmUxzK
end start (zIF2qY
gutf[Ksu
Sbjc8V ut
AWK ]vq=~x
BEGIN { print "Hello, world!" } \vp^[,SI
y.?Q
K#a_7/!v/
BASIC G[\3)@I
传统版BASIC(例如GWBASIC): .oz(,$CS"
RbJbVFz8C
10 PRINT "Hello, world!" !E_RD,_
20 END =xRxr@
0m'tPFQ|
或在提示符输入: Tizjh&*^
`bcCj~j
?"Hello, world!":END 1eMaKT_=
2hE+Om^n
现代版BASIC(例如Quick BASIC): P*9L3R*=N
w"A%@<V3Ec
Print "Hello, world!" S<"`9r)av
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以下的语句在Quick BASIC中同样有效: [:cZDVaA|
Df=zrs["
? "Hello,world!" Nt_7Z
W0KSLxM
?Fj>7
BCPL znu[i&\=
GET "LIBHDR" )*_n/^m
+y|H#(wBP
LET START () BE BV6
U -
$( Wup%.yT~Ds
WRITES ("Hello, world!*N") 8u bb~ B;
$)
Mgc|># =
s&Ml1A :
b'TkYa^
Befunge iM{UB=C
"!dlrow olleH">v 0}
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, `#>JRQ=
^_@ a$h
zG-
~Is-^k)y
J)a^3>
Brainfuck XyE%<]
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< -H
AUKY@;5
+++++++++++++++.>.+++.------.--------.>+.>. Pqb])-M9p
DF~{i{
\[;Qqn0
C g'{hp:
#include <stdio.h> o9L$B
,.PmH.zjmR
int main(void) WbDD9ZS
{ hNGD`"U
printf("Hello, world!\n"); a]8}zSUK
return 0; Pg/$N5->
} ik Pm,ZN
0w<qj T^U
\)mV2r!%
C++ ejI nJ
#include <iostream> ^=gzms
>ISN2Kn
int main() GK-__Y.
{ T*8rR"
std::cout << "Hello, world!" << std::endl; +
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return 0; 2v9T&xo=
} Z=\wI:TY1
d
,!sZ&v
!w-`:d?
C++/CLI ThmN^N
int main() v05B7^1@_
{ }iCcXZ&5^
System::Console::WriteLine("Hello, world!"); Ci?A4q$.
} zQhc
V
Bfz]PN78.G
Oe:_B/l
C# (C Sharp) U6Ws#e
class HelloWorldApp Q( \2(x\
{ Da8{==
public static void Main() mbh;oX+
{ |g}~7*+i
System.Console.WriteLine("Hello, world!"); #:6gFfk0<
} C=|X]"*:u0
} JK@"
&
)RE~=*?d
#>/stU-
COBOL FY6!)/P0I7
IDENTIFICATION DIVISION. .qjdi`v
PROGRAM-ID. HELLO-WORLD. KJ&~z? X
6V@?/B
ENVIRONMENT DIVISION. 4RYvI!
y~AF|Dk=
DATA DIVISION. #(KE9h%
+f- E8q
PROCEDURE DIVISION. ehCZhi~
DISPLAY "Hello, world!". -w#Hy>E
STOP RUN. WOaj_o
*f4BD||
31@m36? X
Common Lisp kbF+aS
(format t "Hello world!~%") f<T"# G$5
V;}6C&aP.
etHkyF
DOS批处理 IhYTK%^96
@echo off 9?xc3F2EBD
echo "Hello, world!" t:h~p-&QB
(2vf
<x
H#+?)<UQ
Eiffel PN&;3z Z
class HELLO_WORLD s[HQq;S
' Oe}Ja
creation i[wEH1jR
make (Z72 3)
feature zw yK \j
make is &oyj8
local TnvX&Y'
io:BASIC_IO h5.>};"@'
do 1tNmiAu
!!io aybfBC
io.put_string("%N Hello, world!") H)${"
end -- make u9 yXHf
end -- class HELLO_WORLD Qs^RhF\d
$M(ZKS3,j
@6roW\'$
Erlang \D]H>i$
-module(hello). ~e)`D nJ
-export([hello_world/0]). ?l3PDorR
>,v,4,c
hello_world() -> io:fwrite("Hello, World!\n"). EZ.|6oug\
Ao:<aX,=
S1R:/9
z
Forth >**7ck
." Hello, world!" CR :]viLw\&g
q
i27:oJ
)ww#dJn
Fortran abVz/R/o
WRITE(*,10) C(^IX"9 #
10 FORMAT('Hello, World!') 7:h8b/9
STOP Yzr|Z7rq}
END 7|"gMw/
f~LM-7!zf}
Of*z9YI
HTML km]RrjRp
<HTML> ^_cR
<HEAD> fgg;WXcT ~
<TITLE> Hello World! </TITLE> whzV7RT
</HEAD> E_aDkNT
<BODY> nEZoF
<p>Hello World!</p> %Tn0r|K
</BODY> W* XG9
</HTML> "Zh6j)[o
,DHiM-v
>|Hd*pg))
HQ9+ FK$?8Jp
H aK%i=6j!
6+MZ39xC
Z.Sq5\d
INTERCAL 7,sslf2%K
PLEASE DO ,1 <- #13 +~6gP!
DO ,1 SUB #1 <- #238 QT5,_+ho
DO ,1 SUB #2 <- #112 eQ}o;vJN
DO ,1 SUB #3 <- #112 %CxrXU
DO ,1 SUB #4 <- #0 H)s$0Xd
DO ,1 SUB #5 <- #64 ]"3(UKx
DO ,1 SUB #6 <- #238 S
z3@h"
DO ,1 SUB #7 <- #26 ;+dB-g[
DO ,1 SUB #8 <- #248 #'qEm=%
DO ,1 SUB #9 <- #168 -`mHb
DO ,1 SUB #10 <- #24 l3sL!D1u
DO ,1 SUB #11 <- #16 wX3x.@!:
DO ,1 SUB #12 <- #158 }*2q7K2bj
DO ,1 SUB #13 <- #52 m)A~1+M$)L
PLEASE READ OUT ,1 Yy4?|wVl
PLEASE GIVE UP yW&|ZJF?
~*|0yPFg
7*e7P[LQU
Java S$!)Uc\)A
public class Hello 2d,q?VH$
{ rUX1Iu7
public static void main(String[] args) 'V reO52
{ Mh04O@"
System.out.println("Hello, world!"); ~aK@M4
} s2*^ PG
} k!gft'iU
pPUv8, %
PYldqY
JSP {2`:7U~|
<% IK%fX/tDyc
out.print("Hello, world!"); "y_A xOH
%> F2/-Wk@
-kp!.c
5B[kZ?>
MIXAL U"} ml
TERM EQU 19 the MIX console device number $7{|
ORIG 1000 start address l65-8
START OUT MSG(TERM) output data at address MSG . Q3GA0O
HLT halt execution .JNU3%s
MSG ALF "MIXAL" y{~l&zrl
ALF " HELL" y*,3P0*z
ALF "O WOR" CD\k.
ALF "LD " %,u_`P
END START end of the program M<t>jM@'A#
_y Q*
p)d0ZAs
Nuva $`:/OA<.
<..直接输出..> S/j~1q_|G
Hello, world! <(Ub(
7xAzd#
c?=
<..或者..> T<*i($
[
]| oh1q
<. Xp<RGp7E
// 不带换行 bXoj/zek
? "Hello, world!" D*d@<&Bl4<
r40#-A$
// 或者 k'uN2m
' bio:1
// 带换行 k;v23
?? 'Hello, world!' )--v>*,V
.> y0vo-)E]-]
cT
abZc
7bioLE
OCaml K9co_n_L
let main () = AY['!&T
print_endline "Hello world!";; riqv v1Nce
w=Xil
g+gHIb7{
Pascal _K{hq<g
program Hello; +Ok R7bl
begin {uEu
^6a5
writeln('Hello, world!'); mBgMu@zt)
end. $FEG0&
!n4p*<Y6
|V{'W-`
|[
Perl cF_hU"
#!/usr/local/bin/perl o
>bf7+D
print "Hello, world!\n"; SesJg~8
0IoS|P}6a
/X)fWO S6
PHP HXF5fs
<?php &Mbpv)V8
print("Hello, world!"); <\c5
?> RO,
RWf4Wh?d
)|f!}( p
Pike `-S6g^Y
#!/usr/local/bin/pike z-nhL=
int main() Q}ho
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{ FCU~*c8Cs
write("Hello, world!\n"); ipfiarT~)
return 0; 2F+K(
} Ro`Hm8o/
a2fV0d6*l
bJ~]nj 3
PL/I OL&ku &J_
Test: procedure options(main); G&MI@Hq
declare My_String char(20) varying initialize('Hello, world!'); -#=v~vE
put skip list(My_String); x]6OE]]8L
end Test; g83]/s+
ZZp6@@zyq'
!Y/$I?13Z
Prolog hb7H- Z2
goal mjG-A8y
write("hello,world!"). HjUs}#</
<<K G S
ve_TpP
Python ?)k;.<6
#!/usr/local/bin/python jI!}}K)d
print "Hello, world!" K"-.K]O8E%
+ |MHi C
jV`xRjh
REXX !\.x7N<)0
say "Hello, world!" p7}xgUxX
_!kL7qJ"
_] veTAV
Ruby w=I8f}(
#!/usr/bin/ruby x\!Q[
print "Hello, world!\n" !8M]n
`WSm/4m
ju`x
Scheme .zO/8y(@
(display "Hello, world!") <rV3(qb#]J
(newline) $+qJ#0OE$
pTPWToKh
chW 1UE
sed (需要至少一行输入) deO/`
sed -ne '1s/.*/Hello, world!/p' H'Q4IRT
-v#0.3zm
p=_K P9
Smalltalk {[QCuR
Transcript show: 'Hello, world!' +m kub}<a
).e_iE[&
F1%-IBe
SNOBOL &OD)e@Tc
OUTPUT = "Hello, world!" e>\[OwF-x
END ," ~ew ,
fOs}5J
9T#d.c24
SQL /iFtW#K+
create table MESSAGE (TEXT char(15)); oZTKG'
insert into MESSAGE (TEXT) values ('Hello, world!'); _Vr>/f
select TEXT from MESSAGE; H$Om{r1j
drop table MESSAGE; JJ_77i
K9h{sC
WZ`u"t^2V
Tcl mb_*FJB-_
#!/usr/local/bin/tcl +Zgh[a
puts "Hello, world!" ~_R8; b
^y"5pfSR
WBdC}S
}3t
TScript #wn`choT'
? "Hello, world!" v.Wkz9
w}
d*;wHA,}F
k4Ed 7T-
Turing H0tjBnu
put "Hello, world!" #1c%3KaZI
*0M[lR0t
]Q-*xho
UNIX-style shell TV#X@jQ
程序中的/bin/sh可改为您使用的shell @}sxA9a
Bo.< 4P
#!/bin/sh 62{(i'K
echo 'Hello, world!' t;g=@o9YA
GcXh
V
-'ff0l
GUI |Et8FR3[m
i#c1ZC
Delphi BWRM
gN'.
program HelloWorld; AG?cI@',
uses j?a^fcXB
Dialogs; Q7uhz5oZ
begin Lh eOGM
ShowMessage('Hello, World!'); w"?H4
end. z^;0{q,
'vbrzI5m
,T:Uk*Bj
Nuva @K{1O|V
<. =QG@{?JTl
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) Pv@P(y?\
.> \v|nRn,`-
:xqhPr]e
of? hP1kl[
Visual Basic !h\>[ O
MsgBox "Hello, world!" LU'<EXUbY
'或者 ~cC=DeX
Print "Hello, world!" ~=xiMB;oH
uO=yQ&
6}b1*xQ
Visual FoxPro ;/hR#>ib
? "Hello, world!" Yz"B
dXwfOC\\
e+'PRVc
X11 t(d$v_*y51
用一个程序 /#WRd}IjK
32#|BBY
xmessage 'Hello, world!' ?%)G%2
>"Tivc5
用C++和gtkmm 2 p]z< 43O$
'aj97b;lpG
#include <iostream> i-kj6N5
#include <gtkmm/main.h> o p{DPUO0
#include <gtkmm/button.h> I%4)%
#include <gtkmm/window.h> cD&Q