“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。 mhp&;
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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》。 9Fe(],AzF
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以下是用不同语言写成的Hello World程序的几个例子: (S:+#v
Ada traJub
with Ada.Text_Io; use Ada.Text_Io; oo{5:
procedure Hello is go, Hfb
begin N4 O'{
Put_Line ("Hello, world!"); rm7$i9DH2
end Hello; &&iZ?JteZ
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汇编语言 o<`)cb }
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x86 CPU,DOS,TASM ^wL
n
MODEL SMALL )4d)G5{
IDEAL DRldRm/
STACK 100H j8@Eqh
RU>Hr5ebo
DATASEG p_!;N^y.
HW DB 'Hello, world!$' O<3i6
PZ/ gD
CODESEG $9GRA M.
MOV AX, @data ^!]Hm&.a
MOV DS, AX +ahr-v^R<
MOV DX, OFFSET HW !/4f/g4Ze
MOV AH, 09H ?Rc+H;x=f
INT 21H Wsn}Y-x
MOV AX, 4C00H RP]hW{:U
INT 21H j @c
fR
END M@a?j<7P,m
zu<8%
SnK j:|bV
x86 CPU,GNU/Linux,NASM {(}Mu R
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). %IS'R`;3
;Enter this into "hello.asm" then type: ALw5M'6q0\
;"nasm -f elf hello.asm" ={9G.%W
;"ld hello.o -o hello" 7w7mE
;"./hello" gf!hO$sQ3
uN`{; Av
section .data ;data section declaration [3a-1,
msg db 'Hello World!',0AH o0- 7# 2
len equ $-msg ;string length '1)BZ!
@`:n +r5u
section .text ;code section declaration >3H/~ Y
global _start ;entry point (start of execution) myT z
_start: mov edx,len ;string length *_<P%J
mov ecx,msg ;string start Lc>9[!+#
mov ebx,1 ;file handle: stdout ;!<WL@C~
mov eax,4 ;sys_write Wt +,6Cq
int 80h ;kernel system call RU!j"T
5
G"CV
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mov ebx,0 ;return value Sd;/yC 8
mov eax,1 ;sys_exit 3F,$}r#
int 80h ;kernel system call _(J 7^rN
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}?,Gn]]
x86 CPU,Windows,MASM32 (7RxCo=X
.386 Cc:4n1|]>
.model flat,stdcall fP`g#t)4Tu
option casemap:none /^~3Ib8Fw+
;Include 文件定义 } d /5_X
include windows.inc rs01@
include user32.inc '3Ir(]Wfd
includelib user32.lib q#W|*kL3
include kernel32.inc 7<Fp3N 3
includelib kernel32.lib 8y}9X v
;数据段 DXlP(={*
.data E3gR%t
szCaption db 'A MessageBox!',0 .O[RE_j
szText db 'Hello,world!',0 `BKo`@
;代码段 G| pZ
.code }$W4aG*[
start: wiWpzJz
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK s8| =1{
invoke ExitProcess,NULL so|5HR|
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> uX{n#i,~L
end start N> RabD
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U^4
/rbQ
AWK SCl$+9E
BEGIN { print "Hello, world!" } ./@!k[
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BASIC ~je#gVoUR
传统版BASIC(例如GWBASIC): JGPLVw
3 $;6pY
10 PRINT "Hello, world!" YV*s1t/
20 END i<|5~tm
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或在提示符输入: }7CMXw
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?"Hello, world!":END hkw;W[ZWa
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现代版BASIC(例如Quick BASIC): k LVf}J~?
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Print "Hello, world!" uhL+bj+W
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以下的语句在Quick BASIC中同样有效: O=}4?Xv
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? "Hello,world!" &eV& +j
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BCPL 9I8{2]
GET "LIBHDR" v8"plx=3
\P]w^
LET START () BE >ir'v5
$( M:|Z3p K
WRITES ("Hello, world!*N") FR9<$
$) X l#P@60
@'U9*:}U
*)k}@tY
Befunge c6sGjZdR
"!dlrow olleH">v zyTP|SXk
, >*H>'O4
^_@ M}NmA
&~U!X~PpB
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Brainfuck ) W)m?%
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< UKp- *YukT
+++++++++++++++.>.+++.------.--------.>+.>. {]plT~{e
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{J q[N}
C !b0'd'xe
#include <stdio.h> 7''l\3mIn
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int main(void) hK"hMyH^
{ Ei2Y)_
printf("Hello, world!\n"); 78>)<$+d
return 0; v5l)T}Nb
} ^'i(@{{o\
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C++ p+U}oC
#include <iostream> :G9+-z{Y&
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int main() 1a3rA
{ ~\`lbGJ7?
std::cout << "Hello, world!" << std::endl; !s#25}9zX5
return 0; 'M185wDdAl
} 7PO3{I
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C++/CLI <jF]SN
int main() cc7*O
{ ^D\1F$AjC
System::Console::WriteLine("Hello, world!"); wXp
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} IW3ZHmrpA
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C# (C Sharp) <y=VDb/
class HelloWorldApp `,d*>
{ X=_pQ+j`^
public static void Main() wEENN_w
{
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System.Console.WriteLine("Hello, world!"); A,i.1U"w8
} e> ~g!S}G
} b{<qt})
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COBOL ?>5[~rMn
IDENTIFICATION DIVISION. GqumH/;
PROGRAM-ID. HELLO-WORLD. TjxZ-qw<
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ENVIRONMENT DIVISION. yjUZ40Dq
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DATA DIVISION. `rsPIOu
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PROCEDURE DIVISION. 5G=<2;
DISPLAY "Hello, world!". 8A}w}h
STOP RUN. tGnBx)J|
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Common Lisp XJy~uks,
(format t "Hello world!~%") CI"7* z_
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!spp*Q)#\
DOS批处理 :8aa #bA
@echo off Vy0s%k
echo "Hello, world!" M*FUtu
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C2\
5ckL=q"+/
Eiffel >c%OnA,3
class HELLO_WORLD n 1MZHa,
)=l~XV
creation "a))TV%N
make 6nh!g
feature |niYN7 17
make is dfY(5Wc+f
local GL$!JKWp
io:BASIC_IO .gTla
do ~$n4Yuu2[
!!io `v3WJ>Q!N?
io.put_string("%N Hello, world!") H-A?F^#
end -- make |D+"+w/
end -- class HELLO_WORLD b"n8~Vd
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Erlang W1'F)5(?7
-module(hello). uKc x$
-export([hello_world/0]). 7S$Am84%
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hello_world() -> io:fwrite("Hello, World!\n"). 0+MNu8t
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2g5i3C.q$
Forth koOkm:(,
." Hello, world!" CR $U%M]_
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0Jz H dz
Fortran c} )U:?6
WRITE(*,10) 3/c3e{,!
10 FORMAT('Hello, World!') .[&0FHnJ5
STOP ap=m5h27
END ~_opU(;f
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HTML TI4#A E
<HTML> ,5oe8\uz
<HEAD> CXt9 5O?
<TITLE> Hello World! </TITLE> %@tKcQ
</HEAD> (5-
w>(
<BODY> 68Po`_/s
<p>Hello World!</p> nZZNx
</BODY> JPQWRK^
</HTML> |,3s]b`
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zh`!x{Z?^
8:=&=9%
INTERCAL p F kA,
PLEASE DO ,1 <- #13 mdjPKrF<
DO ,1 SUB #1 <- #238 &*2\1;1tB
DO ,1 SUB #2 <- #112 Uytq,3Gj6
DO ,1 SUB #3 <- #112 sd4eJ
DO ,1 SUB #4 <- #0 fkf69,+"]
DO ,1 SUB #5 <- #64 V]I@&*O~r
DO ,1 SUB #6 <- #238 ?;84 M@
DO ,1 SUB #7 <- #26 D4,kGU@
DO ,1 SUB #8 <- #248 R_9 &V!fl
DO ,1 SUB #9 <- #168 S(NH# ^
DO ,1 SUB #10 <- #24 Zoe>Ow8mE`
DO ,1 SUB #11 <- #16 LXYpP-E
DO ,1 SUB #12 <- #158 :})(@.H
DO ,1 SUB #13 <- #52 yg({g
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PLEASE READ OUT ,1 N(i%Oxp1
PLEASE GIVE UP .Zo%6[X
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^u'hl$`^
Java hojP3 [
public class Hello _|<kKfd?
{ l-s%3E3
public static void main(String[] args) PPoQNW
{ k=;>*:D%
System.out.println("Hello, world!"); ;:<z hO
} |;xm-AM4r
} A/5??3H
fM,!9}<
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JSP *u
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<% k(hYNmmo
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out.print("Hello, world!"); HI iMq'H^
%> #a1zk\R3
LX<arHz
V~#e%&73FH
MIXAL 3OnIAk3
TERM EQU 19 the MIX console device number <JtH/oN
ORIG 1000 start address Bmx+QO
START OUT MSG(TERM) output data at address MSG w2*.3I,~)B
HLT halt execution 1{6 BU!
MSG ALF "MIXAL" %8c
<C
ALF " HELL" b-*3]gB
ALF "O WOR" 5cc;8i
ALF "LD " =BD} +(3
END START end of the program %=p:\+`VI
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Nuva GMk\
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<..直接输出..> k^<s|8Y
Hello, world! 7#
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<..或者..> 0e./yPTT
'XW[uK]w)
<.
>?Y)evW
// 不带换行 05sWN 0
? "Hello, world!" Z_b^K^4
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// 或者 :~uvxiF
Yz<,`w5/6~
// 带换行 V+\L@mz;
?? 'Hello, world!' nP]tc
.> Q?"o.T';
IZ){xI
99QMMup
OCaml !LGnh
let main () = ku2gFO
print_endline "Hello world!";; s|40v@M
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Pascal @|I:A
program Hello; R$>]7-N}
begin @ P:b\WCI
writeln('Hello, world!'); IE;Fu67wi
end. l>(w]
)q.Z}_,)@
^O>G?a
Perl ZD$W>'m{F
#!/usr/local/bin/perl K&L9Ue
print "Hello, world!\n"; ! z!lQ~
Y!3Mm*
3k%fY
PHP woSO4e/
<?php v %?y5w
print("Hello, world!"); ,/m@<NyK
?> "h@|XI
qcN{p7=0
]lBe
Pike ~*R:UTBtw
#!/usr/local/bin/pike s,5SWdb\v
int main() (~59}lu~
{ :S['hBMN
write("Hello, world!\n"); Z>897>
return 0; OO7sj@
} 7!-3jU@m
kzky{0yKk=
Fe: M'.
PL/I Cx
N]fo
Test: procedure options(main); G,jv Mb`+
declare My_String char(20) varying initialize('Hello, world!'); w)Rtt 9
put skip list(My_String); |_<'qh
end Test; d3nx"=Cy0I
t=-t xnlr<
nqp:nw
Prolog /mdPYV
goal #F>7@N:5
write("hello,world!"). ^*6So3
}JP0q
S\\3?[!p
Python W^o*^v
#!/usr/local/bin/python oK-T@ &-
print "Hello, world!" MU
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ywSV4ZtM
E$u9Jbe
REXX ';'TCb{f *
say "Hello, world!" K;n2mXYGM
D]n"`< Ho
cpIFjb>u{
Ruby p3m!Iota
#!/usr/bin/ruby mbf'xGO
print "Hello, world!\n" ;-aF\}D@n
/]xu=q2
$0-}|u]5U
Scheme 7@[HRr
(display "Hello, world!") y_s^dQe
(newline) <N4)X"s
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