“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。 \Nvu[P
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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》。 i40'U?eG~6
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以下是用不同语言写成的Hello World程序的几个例子: 61[ 8I},V
Ada +.EP_2f9
with Ada.Text_Io; use Ada.Text_Io; Az`c ?
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procedure Hello is UdiogXZ
begin ,:E*Mw:
Put_Line ("Hello, world!"); __3s3YG
end Hello; NrVE[Z#
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G2 E4
汇编语言 9 W7 ljUg
Wq+a5[3"
x86 CPU,DOS,TASM wm'a)B?
MODEL SMALL t1Zcr#b>
IDEAL ~YH'&L.O
STACK 100H 3w>S?"W#
kL7n`o
DATASEG #Ns]l<
HW DB 'Hello, world!$' *\n-yx]
:pp@x*uNP
CODESEG Fuz'!
MOV AX, @data + n)_\@aQ
MOV DS, AX !jySID?q
MOV DX, OFFSET HW ZNKopA(=|%
MOV AH, 09H [J{M'+a
INT 21H zAZ+'9LB
MOV AX, 4C00H ' 1 }ybSG
INT 21H s-Z<
END >,9ah"K_x
wDv G5
pz hPEp;
x86 CPU,GNU/Linux,NASM kA"|PtrW
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). j@Ta\a-,x
;Enter this into "hello.asm" then type: Vq IzDs
;"nasm -f elf hello.asm"
}x9D;%)/
;"ld hello.o -o hello" ^5GyW`a}
;"./hello" }MiEbLduN
7eR%zNDa
section .data ;data section declaration 1^HmM"DD
msg db 'Hello World!',0AH u alpm#GU
len equ $-msg ;string length ;h-W&i7
7~ I*u6zY
section .text ;code section declaration t/k MV6
global _start ;entry point (start of execution) w<P$)~6
_start: mov edx,len ;string length :kU-ol$
mov ecx,msg ;string start #H5i$ o
mov ebx,1 ;file handle: stdout Fmd^9K
mov eax,4 ;sys_write !1b4q/
int 80h ;kernel system call 5fT"`FL?
auai@)v6
mov ebx,0 ;return value [wO|P{8\"
mov eax,1 ;sys_exit blk4@pg
int 80h ;kernel system call +W7#G `>
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=-m"y~{>3
x86 CPU,Windows,MASM32 &*JU
N}86
.386 &Rp/y%9
.model flat,stdcall )ZQ>h{}D
option casemap:none gic!yhsS_
;Include 文件定义 T!yI+<
include windows.inc r-s9]0"7~
include user32.inc [gybdI5wur
includelib user32.lib ( Ev=kO
include kernel32.inc '|
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includelib kernel32.lib <Rb[0E$
;数据段 &<>NP?j}
.data XZ&cTjNB&
szCaption db 'A MessageBox!',0 ^aONuG9
szText db 'Hello,world!',0 }ZKG-~
;代码段 .*k$abb
.code ~x-v%x6
start: I"hlLP
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK yW)&jZb"(
invoke ExitProcess,NULL 99YgQ Y]HO
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> {2v,J]v_[
end start SmUj8?6"
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AWK r1A<XP|1?I
BEGIN { print "Hello, world!" } 49Q
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BASIC %ZR<z$
传统版BASIC(例如GWBASIC): gy*c$[NS$
xCYK"v6\
10 PRINT "Hello, world!" _Oc(K
"v
20 END _wp_y-"
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或在提示符输入: WZQ
EBXs
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?"Hello, world!":END >At* jg48
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现代版BASIC(例如Quick BASIC): ~#];&WE
B~h3naSe
Print "Hello, world!" _g2"D[I%
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以下的语句在Quick BASIC中同样有效: N!~5S`
W'Y?X]xr
? "Hello,world!" 6BdK)s
) -^(Su(!
@j`gxM_-O
BCPL ?e#bq]
GET "LIBHDR" xiy=D5N.=
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LET START () BE Z'!i"Jzq|{
$( ?_t_rF(?6
WRITES ("Hello, world!*N") :lBw0{fP
$) )C>8B`^S
#;])/8R%
NyR,@n1
Befunge H{et2J<H
"!dlrow olleH">v B(1WI_}~
, cfC}"As
^_@ V)Sw\tS6g
7SJbrOL4Q-
;u*I#)7
Brainfuck %:!ILN
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< <;lwvO
+++++++++++++++.>.+++.------.--------.>+.>. ey@{Ng#
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#include <stdio.h> v83@J~
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int main(void) ~$jRn(2
{ V.-cm51I
printf("Hello, world!\n"); :Xs3Vh,V
return 0; w'6sJ#ba(
} MS`XhFPS.
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C++ ^jE8
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#include <iostream> _A~>?gJ;,
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int main() }1EtM/Ni{!
{ HJ_8 `( '
std::cout << "Hello, world!" << std::endl; "SA*
return 0; pCC3r t(
} adWH';Q:
A=+1PgL66
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C++/CLI 6&;h+;h
int main() &Lbh?C
{ *|as-!${k
System::Console::WriteLine("Hello, world!"); <8ih >s(C
} U'LPaf$O
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me>E=
t\WU}aKML
C# (C Sharp) ~~3*o
class HelloWorldApp b#(X+I
{ tTbfyI
public static void Main() UCo`l~K)qg
{ Z]XjN@j"
System.Console.WriteLine("Hello, world!"); ~7wLnB
} wlFK#iK
} &N*l ?7(
c"diNbm[
! NJGW
COBOL "^oU&]KQJ
IDENTIFICATION DIVISION. cI'su?
PROGRAM-ID. HELLO-WORLD. +y^'\KN
#x6EZnG
ENVIRONMENT DIVISION. ct@3]
XzBlT( `w
DATA DIVISION. #sE:xIR
#y
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PROCEDURE DIVISION. 84<zTmm
DISPLAY "Hello, world!". `LNKbTc[m
STOP RUN. b$sT`+4q
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i3cMRcS;
Common Lisp Ln8r~[tVE<
(format t "Hello world!~%") ]sI\.a
\c1>15
bPIo9clq
DOS批处理 .I]EP-
@echo off )"J1ET,z
echo "Hello, world!" uFuP%f!yY
?CldcxM#
(
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Eiffel |-TxX:O-
class HELLO_WORLD |S]T,`7u
y!T8(
creation ,n`S
,
make uR.`8s|
feature 4|UtE<<b
make is &\
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local }L
@~!=q*
io:BASIC_IO Oq:$GME
do h0C>z2iH
!!io d .Q<!Au3
io.put_string("%N Hello, world!") U ]7;K>.T
end -- make %'/^[j#
end -- class HELLO_WORLD +F~B"a
:kC*<f\
!+DhH2;)F
Erlang o(C;;C(*{
-module(hello). jW{bP_,"
-export([hello_world/0]). XePGOw))O
eH~T PH
hello_world() -> io:fwrite("Hello, World!\n"). rP#&WSLVj
hcz!f
`O!yt
Forth bAld'z#
." Hello, world!" CR Gr'|nR8
NZ?dJ"eq7
UgD)O:xaU
Fortran 8@
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WRITE(*,10) jhkXU+4
10 FORMAT('Hello, World!') tF\_AvL_8
STOP ANfy+@
END iu$Y0.H@
_YN
C}PUU
g9Ty%|Q7(
HTML c<sq0('`
<HTML> 8T8]g M
<HEAD> PAH#yM2Ic
<TITLE> Hello World! </TITLE> yyGn<
</HEAD> Gz4LjMQ
&
<BODY> 7eW6$$ju,N
<p>Hello World!</p> C}ASVywc,1
</BODY> CdMV(
</HTML> x`I"%pG
FD[4?\W]#
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HQ9+ :(4q\~
H !r9rTS]
?X Rl\V
!}sF#
INTERCAL Oc-ia)v1G
PLEASE DO ,1 <- #13 T-]UAN"O
DO ,1 SUB #1 <- #238 ZZYtaVF:
DO ,1 SUB #2 <- #112 w_DaldK*
DO ,1 SUB #3 <- #112 s<oT,SPt
DO ,1 SUB #4 <- #0 PS0/Ok
DO ,1 SUB #5 <- #64 cH5RpeP
DO ,1 SUB #6 <- #238 $j\jT
DO ,1 SUB #7 <- #26 ]=59_bkD:s
DO ,1 SUB #8 <- #248 5H, (\Xd
DO ,1 SUB #9 <- #168 i^8w0H<-@v
DO ,1 SUB #10 <- #24 /B|"<`-H
DO ,1 SUB #11 <- #16 CAmIwAx6;
DO ,1 SUB #12 <- #158 ff=RKKnN
DO ,1 SUB #13 <- #52 k5*Z@a
PLEASE READ OUT ,1 A|GsbRuy
PLEASE GIVE UP ,c
0]r;u!
5bd4]1gj
VV sE]7P ]
Java Lhrlz,1
public class Hello t^}"8
{
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public static void main(String[] args) W@i|=xS?
{ MO|Pv j~[
System.out.println("Hello, world!"); 0#ON}l)>
} J(A+mYr{:
} KFy|,@NI
5kA D vi.
5DO}&%.xt
JSP Vy^mEsQC+h
<% 1:_}`x=hM
out.print("Hello, world!"); D
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%> Vt-V'`Y
eu?P6>urA
"!uS!BI?
MIXAL %d<UMbS^
TERM EQU 19 the MIX console device number t~.^92]s|
ORIG 1000 start address 19RbIG/X
START OUT MSG(TERM) output data at address MSG eLbh1L
HLT halt execution .4[M-@4+]
MSG ALF "MIXAL" B9,
ALF " HELL" 8#9OSupp
ALF "O WOR" |tz{Es<`B
ALF "LD " !3o/c w9
END START end of the program M'oQ<,yW-
QUg<~q)Oq
j 20mZ
Nuva ABL5T-*]
<..直接输出..> dj}P|v/;z
Hello, world! G^SDB!/@J
4VkJtu5
<..或者..> {7q8@`Oa
1^[]#N-Bu
<. ey\(*Tu9
// 不带换行 " LhXR
? "Hello, world!" :5jor Vu
VTi;y{
// 或者 2P{! n#"
7t78=wpLc
// 带换行 ZS@R ?
?? 'Hello, world!' fSGaUBiq}
.> a)6?:nY$
#vViEBVeN
gEq6[G
OCaml };*&;GFe
let main () = $. sTb
print_endline "Hello world!";; 52F3r:Rk
e'=#G$S?g
`qZ@eGZ
z
Pascal Rn{X+b.
program Hello; Bu{%mm(
begin RhE|0N=
writeln('Hello, world!'); v{8r46Y~Z)
end. /)rv Ndn
#jg3Ku;Y
SL_JA
Perl Ppx 4#j
#!/usr/local/bin/perl jtqU`|FSQ
print "Hello, world!\n"; pwF])uf*{\
Hq,NOP
eEeK ]8@
PHP gV'=uz v
<?php 7'@~TM
print("Hello, world!"); Ev48|X6
?> +Lo,*
0f;|0siTAm
u0$}VO5/a
Pike wqyF"^It"
#!/usr/local/bin/pike s##XC^;p[
int main() T'N/A9{q
{ gpCWXz')i
write("Hello, world!\n"); g=Nde2d?
return 0; ;3Q3!+%j
} P+ 0-h
p#gf^Y5
cWI7];/d;
PL/I 5)gC<
Test: procedure options(main); a
JQ_V
declare My_String char(20) varying initialize('Hello, world!'); 2}5@:cwR+
put skip list(My_String); YCyh+%Q(
end Test; mH'om
SCz
(]5gYi
s]xn&rd_
Prolog `>0(N.'T
goal }IKU^0M9<T
write("hello,world!"). =':B
F_V/&OV
}w)wW1&
Python "h&[6-0'
#!/usr/local/bin/python X\BdN Hr
print "Hello, world!" % "ZC9uq?
zZ8:>2Ps(
X
u>]$+u#
REXX iF"kR]ZL
say "Hello, world!" !'=<uU-
i"{znKz vD
>}86#^F
Ruby j 2e|
#!/usr/bin/ruby P>7PO~E.
print "Hello, world!\n" U^OR\=G^
)N&95\u
; VQ:\fG
Scheme L0ZAF2O
(display "Hello, world!") &=lhKt
(newline) =8DS~J{
Oq95zo
!Eb!y`jK
sed (需要至少一行输入) ul\FZT 4
sed -ne '1s/.*/Hello, world!/p' $u,`bX
*,wW-8
UR[UZ4G
Smalltalk =AeOkie
Transcript show: 'Hello, world!' No]#RvEd3
fc%C!^7
w5a;ts_x
SNOBOL <@qJsRbhK
OUTPUT = "Hello, world!" h9 +76
END 1xsB@D
T?D]]x
p$6L_
*$
SQL &"X1w $
create table MESSAGE (TEXT char(15)); ES[]A&tf
insert into MESSAGE (TEXT) values ('Hello, world!'); S2$r 6T
select TEXT from MESSAGE; eak+8URo
drop table MESSAGE; =n MAw&`
l D]?9K29
KocNJ
TB
Tcl fyv S1_
#!/usr/local/bin/tcl @Sz7*p
puts "Hello, world!" ,L8(Vo`-
IVG77+O# }
/ASpAl[J
TScript A*? Qm
? "Hello, world!" Kuh)3/7
p[D,.0SuC
6yMaW
eT
Turing #M:Vwn
JX
put "Hello, world!" ^~m}(6
;7g~4Uv4}
<J!?eH9f
UNIX-style shell r6}-EYq=
程序中的/bin/sh可改为您使用的shell .vpx@_;]9
]DI%7kw'
#!/bin/sh }/F9(m
echo 'Hello, world!' M V~3~h8
[S[@ Q[zP@
VqdR
GUI +\MGlsMK@.
r7*'s
Delphi _Ns_$_
program HelloWorld; 6$p6dmV|
uses M}9PicI?7
Dialogs; v?S3G-r
begin
4-q8:5
ShowMessage('Hello, World!'); _MUSXB'
end. Qx77%L4
Gv6#LcF#
k)S'@>n{u
Nuva }zHG]k,j
<. {OW.^UIq^
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) BE," lX
.> t8"yAYj
CNyV6jb
Ert`
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Visual Basic DgC;1U'
MsgBox "Hello, world!" W/<