“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。 PZVh)6f"c
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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》。 k"*A@
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以下是用不同语言写成的Hello World程序的几个例子: J2X;=X5
Ada ^Ge3"^x1
with Ada.Text_Io; use Ada.Text_Io; -)biSU,
procedure Hello is N5>ioJj
begin by 'P}
Put_Line ("Hello, world!"); 9oOr-9t3
end Hello; _*d8:|qw
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汇编语言 [TUy><Z
Hw 7
x86 CPU,DOS,TASM ),9^hJ1+@
MODEL SMALL 9#K,@X5 j
IDEAL ?:D#\4=US
STACK 100H i:9f#
.>4Zt'gCt
DATASEG `)sC".b7
HW DB 'Hello, world!$' @"
-[@
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CODESEG jV83%%e
MOV AX, @data 8lG@8tbW^
MOV DS, AX -+^E5
MOV DX, OFFSET HW zZrUS'8
MOV AH, 09H clE_a?
INT 21H rkdf htpI
MOV AX, 4C00H 1P(5+9"s
INT 21H aS
]bTYJ'
END T%GdvtmS>
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x86 CPU,GNU/Linux,NASM :#CQQ*@
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). wc&%icF*cr
;Enter this into "hello.asm" then type: U ?vG?{A
;"nasm -f elf hello.asm" T#ktC0W]h
;"ld hello.o -o hello" `zQ2i}Uju
;"./hello" `a$-"tW~j
drr
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section .data ;data section declaration JQ-O=8]
msg db 'Hello World!',0AH CCZ'(Tkq
len equ $-msg ;string length ulY8$jB
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section .text ;code section declaration mmE!!J`B
global _start ;entry point (start of execution) DG2CpR)S
_start: mov edx,len ;string length vuL;P"F4&
mov ecx,msg ;string start g^ @9SU
mov ebx,1 ;file handle: stdout rCOH*m&
mov eax,4 ;sys_write k!9LJ%Xh
int 80h ;kernel system call }n!$)W*?
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mov ebx,0 ;return value H0!W:cIS;l
mov eax,1 ;sys_exit ;,d^=:S6@
int 80h ;kernel system call ="~yD[S
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x86 CPU,Windows,MASM32 /z'fFl^6O
.386 Wt$" f
.model flat,stdcall 4z{jWNM)N
option casemap:none PubO|Mf
;Include 文件定义 lCyBdY9n
include windows.inc adi^*7Q] )
include user32.inc R^[b
I;
includelib user32.lib [(*ObvEF
include kernel32.inc &bh%>[
includelib kernel32.lib <=1nr@L
;数据段 H1!u1k1nl
.data ;nzzt~aCC
szCaption db 'A MessageBox!',0 PWavq?SR
szText db 'Hello,world!',0 s{QS2G$5
;代码段 w;e42.\
.code e}F1ZJz
start:
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invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK x{GKz#
invoke ExitProcess,NULL l"T{!Oq
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> mA{G:
d
end start "pa}']7#
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AWK C r A7lu'
BEGIN { print "Hello, world!" } BQ[,(T`+R
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BASIC p\>im+0oh
传统版BASIC(例如GWBASIC): a$}n4p
Bu%TTbnz_G
10 PRINT "Hello, world!" /'yi!:FZFC
20 END @<n8?"{5S
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或在提示符输入: G7|CwzMg
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?"Hello, world!":END h'QEwW
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现代版BASIC(例如Quick BASIC): B#zu<z
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Print "Hello, world!" Qp]-:b
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以下的语句在Quick BASIC中同样有效: EWU(Al T
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? "Hello,world!" y2_^lW%
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do-mkvk
BCPL 0=WZ 8|R
GET "LIBHDR" Q!%C:b
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LET START () BE 8 !{;yz
$( 5.]eF$x2
WRITES ("Hello, world!*N") D&)w =qIu
$) |i/Iv
P&6hk6#
Q&JnF`*
Befunge E0SP
"!dlrow olleH">v @c>a
, o ?9k{
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Brainfuck Q?1'
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++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ,(D:cRN
+++++++++++++++.>.+++.------.--------.>+.>. .lcI"%>
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C KRL9dD,&
#include <stdio.h>
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int main(void) 7yp}*b{s
{ e>GX]tK
printf("Hello, world!\n"); _&]B
return 0; PX5K-|R
} Dej2-Y
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C++ F74^HQ*J
#include <iostream> 6)@Y 41H]C
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int main() xe=/T#%
{ ya*KA.EGg
std::cout << "Hello, world!" << std::endl; '`+GC9VG
return 0; McXid~
} IM^K]$q$47
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C++/CLI 0Ud.u
int main() LKEf#mp
{ m\XgvpvrP
System::Console::WriteLine("Hello, world!"); Vk#wJ-
} F$!K/Mm[
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C# (C Sharp) QoU0>p+2
class HelloWorldApp NI1jJfH|l
{ 9"jhS0M
public static void Main() Kt 0
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{ gbl`_t/
System.Console.WriteLine("Hello, world!"); 8}Qmhm`_j=
} nWyn}+C-
} ~.dmfA{
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COBOL YpGG^;M$
IDENTIFICATION DIVISION. SDW_Y^Tb
PROGRAM-ID. HELLO-WORLD. 3~r>G
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ENVIRONMENT DIVISION. zx(=ArCRr
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DATA DIVISION. -=+@/@nV
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PROCEDURE DIVISION. 1&wI*4
DISPLAY "Hello, world!". ) vKZs:
STOP RUN. Q;'{~! =
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Common Lisp {e1akg.
(format t "Hello world!~%") :M |<c9I
qZcRK9l]F1
Q`ALyp,9b
DOS批处理 p1O[QQ|
@echo off 7a<-}>sU
echo "Hello, world!" Q96"^Hd
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Eiffel ]{/1F:bcQ
class HELLO_WORLD Y[8GoqE|
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creation Rl%?c5U/$
make : }q~<
feature "P@jr{zvMd
make is x9U(,x6r
local BwpSw\\?@
io:BASIC_IO
_T{
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do IGtpL[. ;/
!!io soTmKqj E
io.put_string("%N Hello, world!") wS)2ymRg
end -- make 3G;#QK-c
end -- class HELLO_WORLD %+{[ %?xh
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}%@q; "9`
Erlang dpTeF`N
-module(hello). d
hp-XIA;
-export([hello_world/0]). FthrI
h3<L,Olp
hello_world() -> io:fwrite("Hello, World!\n"). ?|`Ba-
n'42CE
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Forth hA6D*8oXD
." Hello, world!" CR $r'PYGn
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Fortran 3Aqw)B'"_
WRITE(*,10) C=sEgtEI
10 FORMAT('Hello, World!') L2j7w006
STOP >p[skN
END lO>9Q]S<
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HTML
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<HTML> KbcmK(`_
<HEAD> c=52*&
<TITLE> Hello World! </TITLE> CH ojF+e
</HEAD> 'T7=.Hq<4
<BODY> L2jjkyX]
<p>Hello World!</p> t
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</BODY> a#k=!
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</HTML> uDWxIP,m
oQS_rv\Ber
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BS@x&DB
INTERCAL Z.iQm{bI
PLEASE DO ,1 <- #13 ]DO~7p[
DO ,1 SUB #1 <- #238 }5??n~:*5
DO ,1 SUB #2 <- #112 ,1! ~@dhs
DO ,1 SUB #3 <- #112 Y!K5?kk
DO ,1 SUB #4 <- #0 '@WpJ{]A
DO ,1 SUB #5 <- #64 'PBuf:9lN
DO ,1 SUB #6 <- #238 l[P VWM
DO ,1 SUB #7 <- #26 I/HcIBJ
DO ,1 SUB #8 <- #248 6~rO(
DO ,1 SUB #9 <- #168 XS&oW
DO ,1 SUB #10 <- #24 XP|qY1
DO ,1 SUB #11 <- #16 H/I1 n\
DO ,1 SUB #12 <- #158 @|i
f^
DO ,1 SUB #13 <- #52 |_A DG
PLEASE READ OUT ,1 8do7`mN
PLEASE GIVE UP )}[:.Zg,3/
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w9c^IS
Java 97]$*&fH
public class Hello {$ (X,E
{ n-5@<y^
public static void main(String[] args) rZt7C(FM$7
{ -{=c T?"+
System.out.println("Hello, world!"); e+? -#
} WbP
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} .R<Ke\y/
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JSP ]-D&/88``
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out.print("Hello, world!");
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%> P\3$Y-id
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CB1AL]|3
MIXAL DJu&l
TERM EQU 19 the MIX console device number $zR[2{bg
ORIG 1000 start address t]QGyW A]
START OUT MSG(TERM) output data at address MSG K~MTbdg
HLT halt execution F-g7*
MSG ALF "MIXAL" - 2`D(xC
ALF " HELL" <.N337!
ALF "O WOR" Y2B",v"
ALF "LD " M
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END START end of the program -j<g}IG
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Nuva ':[:12y[
<..直接输出..> $d +n},[C{
Hello, world! ENEn Hu^
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<..或者..> / >As9|%
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<. +1]xmnts
// 不带换行 <"8<<
? "Hello, world!" eT4+O5t
j. m(Z}
// 或者 , id`=L=
\!_:<"nX.
// 带换行 7ql&UIeQ
?? 'Hello, world!' Q~L"Mr8>V
.> vA(')"DDT
Z\)emps
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OCaml VHUOI64*
let main () = 'h:[[D%H`
print_endline "Hello world!";; 4 <&8`Q
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v.aSf`K
Pascal /JOEnQ5X\!
program Hello; u{@b_75Y
begin unUCn5hJ=
writeln('Hello, world!'); 7fB:wPlG;
end. S&rfMRP
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Perl IIW6;jS
#!/usr/local/bin/perl 1 ^k#g,
print "Hello, world!\n"; *"%MT:
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PHP z+J4XpX0,
<?php 7r_Y.
print("Hello, world!"); ke(LjRS
?> X[XSf=
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vT7ei"~&u
Pike _*.Wo"[%[X
#!/usr/local/bin/pike e?&4;
int main() l*l(QvN_
{ =}12S:Qhj
write("Hello, world!\n"); TAbC-T.EV
return 0; bN#)F
} I'_.U]An
cX64 X
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PL/I gda3{g7<)
Test: procedure options(main); u/@dWeY[]
declare My_String char(20) varying initialize('Hello, world!'); aXSTA,%
put skip list(My_String); wN])"bmB
end Test; Z~.3)6,z
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u.}z}'-
Prolog ^PCshb##
goal D:uBr|('
write("hello,world!"). a*8^M\>m4
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XOM@Pi#z
Python n{~Ws^d
#!/usr/local/bin/python Y^? J3[@
print "Hello, world!" }tIIA"dZ
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REXX ya9V+/i7T_
say "Hello, world!" |!\(eLR9>
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wec|~Rc-
Ruby 8bB'[gJ]{
#!/usr/bin/ruby P2nb&lVdu
print "Hello, world!\n" !2('Cq_^
~D4%7U"dv
0!n6tz lT
Scheme T/V 5pYl
(display "Hello, world!") >Ic)RPO9
(newline) az (u=}
<%(nF+rQA"
F:8cd^d~u
sed (需要至少一行输入) &}1PH%6
sed -ne '1s/.*/Hello, world!/p' Xm7Nr#
HDyus5g
K4vl#*qn
Smalltalk O; qerE?i`
Transcript show: 'Hello, world!' X9f!F2x
Q<y&*o3YF|
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SNOBOL J`ia6fy.I
OUTPUT = "Hello, world!" /=x) 9J
END 5o~;0K]
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dpO ZqhRs.
SQL T(<C8
create table MESSAGE (TEXT char(15)); (R*K)(Nw[
insert into MESSAGE (TEXT) values ('Hello, world!'); 3wEVjT-
select TEXT from MESSAGE; xj/ +Z!,9
drop table MESSAGE; nQc]f*
m~fA=#l
l
bBkF,`/f$
Tcl \e5bxc
#!/usr/local/bin/tcl Ly?gpOqu5
puts "Hello, world!" i/nA(%_
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;}b.gpG
TScript 4VjP:>*p
? "Hello, world!" HR55|`]
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/
Turing (u81p
put "Hello, world!" Tp.0@aC
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S
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UNIX-style shell "-Lbz)k
程序中的/bin/sh可改为您使用的shell W9~vBU
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