“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。 b|P[\9
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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》。 [td)v,
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以下是用不同语言写成的Hello World程序的几个例子: Hz `aj
Ada ^fa+3`>
with Ada.Text_Io; use Ada.Text_Io; 7E6gXf.
procedure Hello is x=(Q$Hl5
begin 'gI q_t|^
Put_Line ("Hello, world!"); oSq4g{xvMH
end Hello; "k[-eFz/@M
. _Bejh
r3*0`Rup
汇编语言 1^jGSB.%A
yHsmX2s
x86 CPU,DOS,TASM ]yy10Pk[!
MODEL SMALL INZsDM 9
IDEAL A\X?Aq-^'
STACK 100H :XqqhG
W1fEUVj
DATASEG @@M
2s(
HW DB 'Hello, world!$' rOHU)2
J'jwRn
CODESEG kr[p4X4
MOV AX, @data ux:czZqy
MOV DS, AX @z[,w`
MOV DX, OFFSET HW 0Z$=2c?xT
MOV AH, 09H K-vG5t0$\/
INT 21H fMgB!y"Em
MOV AX, 4C00H rl"$6{Z}
INT 21H CY"&@v1
END ssj(-\5
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lV<2+Is
x86 CPU,GNU/Linux,NASM LQ(z~M0B
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 9%T~^V%T7
;Enter this into "hello.asm" then type: }coSMTMv6
;"nasm -f elf hello.asm" ra2sYH1wr
;"ld hello.o -o hello" l+`f\ },
;"./hello" X: PB
}
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section .data ;data section declaration D+.<
kY.
msg db 'Hello World!',0AH :p%G+q2
len equ $-msg ;string length Y>W$n9d&G2
o}O"
section .text ;code section declaration oe$&X&
global _start ;entry point (start of execution) ?tx%KU\3
_start: mov edx,len ;string length ;aXu
mov ecx,msg ;string start Ad$CHx-
mov ebx,1 ;file handle: stdout rKxIOJ ,T
mov eax,4 ;sys_write
0N9`WK
int 80h ;kernel system call 4IfOvAN%
RrB)u?
mov ebx,0 ;return value e1ts/@V
mov eax,1 ;sys_exit DO6Tz-%o
int 80h ;kernel system call !D#wSeJ
q=Xd a0c
742sqHx
x86 CPU,Windows,MASM32 PW7{,1te,
.386 RI.6.f1dy
.model flat,stdcall nwSujD
option casemap:none <j\osw1R
;Include 文件定义 max 5s$@
include windows.inc TNun)0p
include user32.inc +pMa-{
includelib user32.lib Zfwhg4G~
include kernel32.inc vfBIQfH
includelib kernel32.lib v_=xN^R
;数据段 }#'I,?_k
.data f0"N
szCaption db 'A MessageBox!',0 LelCjC{`1
szText db 'Hello,world!',0 b~$B0o)
;代码段 $r> $
u
.code 0
]K\G55
start: "$P|!k45(
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK gbf2ty
invoke ExitProcess,NULL ,yPs4',d
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Z!#n55|
end start zt,Tda4Y
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FB
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AWK (p6$Vgdt
BEGIN { print "Hello, world!" } <;eXbO>Q
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BASIC ={'*C7K)oK
传统版BASIC(例如GWBASIC): s0D,n1x
[te9ui%JS
10 PRINT "Hello, world!" R k'5L
20 END F6'[8f
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或在提示符输入: Jeb"t1.$
.C HET]
?"Hello, world!":END I7=g8/JD
nrFuhW\r
现代版BASIC(例如Quick BASIC): J]h$4"
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Print "Hello, world!" ko7*9`
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以下的语句在Quick BASIC中同样有效: #k}x} rn<'
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? "Hello,world!" ,q_'l?Pn
p-CBsm5P
\}:RG^*m
BCPL A5WchS'
GET "LIBHDR" -9D2aY_>
c>~q2_}W(
LET START () BE E8gbm&x*
$( uDe%M
WRITES ("Hello, world!*N") .
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$) H0dHW;U<1
U<|hIv-&
KzgW+6*G
Befunge dx.,
"!dlrow olleH">v M'(4{4rC
, (B/od# nU
^_@ W~W`fm
k_,wa]ws$
"J.7@\^ h/
Brainfuck 7NQ@q--3s
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ]'"aVGqa.
+++++++++++++++.>.+++.------.--------.>+.>. 5u:{lcC.X
4Y'Kjx
/7`fg0A
C 6Wn"h|S
#include <stdio.h> I38j[Xk
$T#yxx
int main(void) UZ*Yt
{ *m>XtBw.
printf("Hello, world!\n"); C<G`wXlP|
return 0; O,D/&0
} M"W~%
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C++ DQ08dP((v
#include <iostream>
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|Q|vCWel{
int main() K|a^<|
S
{ ;:`0:Ao.
std::cout << "Hello, world!" << std::endl;
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return 0; 5eL_iNqJM
} Qnr7Qnb
VX'cFqrK3
NA/hs/ '
C++/CLI ;$FpxurX
int main() hQFF%xl
{ ?|$IZ9
System::Console::WriteLine("Hello, world!"); `i"7; _HoV
} ^q@6((O
)@hG #KMK
_T^+BUw
C# (C Sharp) fGf C[DuY
class HelloWorldApp
MYk%p'
{ ^#0k\f>_
public static void Main() h%=>iQ%enc
{ Shag4-*@hi
System.Console.WriteLine("Hello, world!"); BKJwM'~
} ^_0l(ke
} Cju%CE3a
Jx-dWfe
Z\1wEGP7{
COBOL USrBi[_ci\
IDENTIFICATION DIVISION. h ycdk1SN
PROGRAM-ID. HELLO-WORLD. QPZ|C{Ce
Vmb `%k20'
ENVIRONMENT DIVISION. ? CabVj-r
OZCbMeB{+J
DATA DIVISION. 7j//x Tr}a
-ge :y2R_w
PROCEDURE DIVISION. Xlp $xp"
DISPLAY "Hello, world!". 3[ T<pAZ
STOP RUN. ?c7}
v
^6?)EM#
jWE?$r"
Common Lisp sfUKH;xC
(format t "Hello world!~%") oBpoZ @[Z
I `I+7~t
i|/EA7
DOS批处理 Jmcf9g
@echo off Z{p)rscX
echo "Hello, world!" vi8)U]6
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QVq+';cG
Eiffel c&]nAn(
class HELLO_WORLD }z|@X KA#
EZw<)Q
creation [(d))(M$|
make 5;4bZ3e,0
feature (imaL,M-D
make is ,JVWn>s
local AzlZe\V?)~
io:BASIC_IO um}%<Cy[
do %.nZ@';.
!!io P)9$}9i
io.put_string("%N Hello, world!") gOSFvH8FU
end -- make 2*5]6B-(
end -- class HELLO_WORLD KJQW ))%e
V
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R4x!b`:i
Erlang !h[xeLlU
-module(hello). a%igc^GS2
-export([hello_world/0]). OdWZYWj
+C8yzMN\
hello_world() -> io:fwrite("Hello, World!\n"). ']'V?@H]4
$T-Pl57
6.(L8.jv
Forth 4IUdlb
." Hello, world!" CR %+F%C=GqI
Yfa` }hQ
^v+3qm@,
Fortran M&q3xo"w
WRITE(*,10) W81dLeTZg
10 FORMAT('Hello, World!') R/BW$4/E
STOP J.;{`U=:
END :@=;WB*0
ijuIf9!
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HTML u.~`/O
<HTML> A&8{0
<HEAD> 4
>2g&);B
<TITLE> Hello World! </TITLE> -l2aAK1M
</HEAD> t7; ^rk*
<BODY> uNoP8U%*
<p>Hello World!</p> t_\;G~O9-M
</BODY> R{3vPG
</HTML> 6&qT1nF1
Z+EN]02|
<GRplkf`
HQ9+ 8+=-!":]
H $6Az\Iu *
wSGW_{;-
>v9@p7Dn
INTERCAL %'`L+y
PLEASE DO ,1 <- #13 ^U@-Dp,k+
DO ,1 SUB #1 <- #238 Mb
+
DO ,1 SUB #2 <- #112 YZllfw$9
DO ,1 SUB #3 <- #112 Ee0}Xv
DO ,1 SUB #4 <- #0 `=FDNOwp
DO ,1 SUB #5 <- #64 +`_Km5=
DO ,1 SUB #6 <- #238 8F(Vd99I
DO ,1 SUB #7 <- #26 YuVg/ '=
DO ,1 SUB #8 <- #248 ^.:dT?@R
DO ,1 SUB #9 <- #168 8-clL\bm
DO ,1 SUB #10 <- #24 Uk0Fo(HY
DO ,1 SUB #11 <- #16 u
^}R]:n
DO ,1 SUB #12 <- #158 +ia N[F$
DO ,1 SUB #13 <- #52 4w<4\zT_U}
PLEASE READ OUT ,1 J\fu6Ti
PLEASE GIVE UP 6M-Y`T`J
J~=tR1k
XxeyGs^%9
Java Dc;zgLLL
public class Hello FKpyD
{ ^PrG5|,s
public static void main(String[] args) x |0@T ?
{ r@v_hc
System.out.println("Hello, world!"); YI!@,t
} 0n('F
} _4lhwKYU
{DVu* %|
H7&bUt/
JSP '3'*VcL(
<% _1EWmHZ?
out.print("Hello, world!"); PEIf)**0N
%> ,lUr[xzV
Z?AX
hO H
DXc"
MIXAL v[t*CpGd
TERM EQU 19 the MIX console device number b$O1I[o
ORIG 1000 start address $1< ~J
START OUT MSG(TERM) output data at address MSG 8*\PWl
HLT halt execution E6njmdu
MSG ALF "MIXAL" %*Aq%,.={
ALF " HELL" +GDT@,/
ALF "O WOR" l2[{T^
ALF "LD " (Ymj
END START end of the program ~P5;k_&
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5uxB)Dx)
Nuva @Q#<-/
<..直接输出..> ,'>,N/JA
Hello, world! 3<vw#]yL
n |Is&fy
<..或者..> )cUFb:D*"
'$m
uA\
<. 8<X,6
// 不带换行 VzZ'W[/7)B
? "Hello, world!" 5L% \rH&N
s J~WzQ
// 或者 2C@s-`b
kntM
// 带换行 .*acw
?? 'Hello, world!' 8&2W^f5
.> )xPfz
"1X@t'H38
e/*T,ZJ
OCaml 8 "5^mj
let main () = B+Ox#[<75
print_endline "Hello world!";; hErO.ad1o
t.YY?5l
E%tGwbi7
Pascal (I7s[
program Hello; b0n " J`
begin %M
KZ':m
writeln('Hello, world!'); I%qZMoS1h
end. Kp.d#W_TX
0'Y'K6hG`
^;[|,:8f7L
Perl H1^m>4ll9
#!/usr/local/bin/perl cQOc^W
print "Hello, world!\n"; {iRXK
ehe;<A
Q
q7+_,w
PHP y^xEZD1X6-
<?php <1xs
ya[e
print("Hello, world!"); uhJnDo
?> 5q Y+^jO]o
!\RBOdw C
u:[vqlU
Pike $T%~t@Cv1
#!/usr/local/bin/pike `eXTVi|0"~
int main() \ =(r6X
{ +*AdSzX
write("Hello, world!\n"); .W/#$s|X\
return 0; N# ?}r>W3
} .{}=!>U2
h:qt?$]J
hI Q 2s
PL/I |2'u@<(Z/
Test: procedure options(main); q` Z_Bw
declare My_String char(20) varying initialize('Hello, world!'); ZQV,gIFys
put skip list(My_String); 'Bc{N^
end Test; /yhGc}h
Jq8CII
$MPh\T
Prolog KbP( ;
goal Iq%f*Zm<
write("hello,world!"). FWu[{X;
T|fmO<e*n
zJ9[),;7B
Python :#I7);ol
#!/usr/local/bin/python \4qwLM?E^
print "Hello, world!" ~,jBm^4
sCi"qtHP
y8k*{1MuO
REXX rr;p;
say "Hello, world!" ,|u^-J@
%hnv
go:^g
gp`H>Sn.|
Ruby m.|__L
#!/usr/bin/ruby md. #n
print "Hello, world!\n" `Fn6*_n
ja1WI
HC[)):S*
Scheme U.mVz,k3
(display "Hello, world!") CRKuN
(newline) w!8xZu
FK ~FC:K
J#OiY
sed (需要至少一行输入) JxlU=7cF
sed -ne '1s/.*/Hello, world!/p' <.6bni
)
6&Al9+$
^P|
K2at
Smalltalk 6%nKrK
Transcript show: 'Hello, world!' 72;4
A"$UU6Z4
Aqp$JM
>
SNOBOL FdZG%N>Z
OUTPUT = "Hello, world!" :p6.v>s8
END s'Op|`&X
Ivdg1X
%8N=4vTJ
SQL _Vj uQ
create table MESSAGE (TEXT char(15)); Ait3KIJ9
insert into MESSAGE (TEXT) values ('Hello, world!'); k 6)ThIG
select TEXT from MESSAGE; O,>`#?
drop table MESSAGE; [LcHO] _^M
=%UX"K`
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