“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。 &M-vKc"d
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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》。 V|Bwle
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以下是用不同语言写成的Hello World程序的几个例子: he|Q(?
Ada " {<X! ^u>
with Ada.Text_Io; use Ada.Text_Io; qrMED_(D
procedure Hello is ~+.=
begin w_"d&eYdg0
Put_Line ("Hello, world!"); `2>p#`
end Hello; tSy 9v
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汇编语言 "#)|WVa=BM
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x86 CPU,DOS,TASM Na@bXcz)
MODEL SMALL Z?P^Y%ls
IDEAL jCY~Wc
STACK 100H loA/d
<NZPLo F
DATASEG V 7,dx@J-
HW DB 'Hello, world!$' cvcZ\y
&mX_\w/%
CODESEG MKbcJZe
MOV AX, @data \.2i?<BC
MOV DS, AX NV5qF/<M
MOV DX, OFFSET HW #cQ5-R-1
MOV AH, 09H (iKJ~bJ
INT 21H <zCWLj3
MOV AX, 4C00H 6B]=\H
INT 21H _l{~O
END |GMo"[
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2G.y.#W
x86 CPU,GNU/Linux,NASM eb7UA=[Z
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 3cHYe
;Enter this into "hello.asm" then type: hh4R
;"nasm -f elf hello.asm" a!R*O3
;"ld hello.o -o hello" a&{Y~Og?%
;"./hello" %NQ
mV_1
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section .data ;data section declaration (uX?XX^
msg db 'Hello World!',0AH {.Qv1oOa
len equ $-msg ;string length H!*ypJ
U/'l "N[
section .text ;code section declaration G^B>C
global _start ;entry point (start of execution) RB4n>&Y
_start: mov edx,len ;string length .I_atv
mov ecx,msg ;string start 7 "eK<qJ
mov ebx,1 ;file handle: stdout 89>}`:xS^
mov eax,4 ;sys_write af<h2r
int 80h ;kernel system call np2&W'C/i
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mov ebx,0 ;return value }$i"t8"s
mov eax,1 ;sys_exit mr7Oi `dE
int 80h ;kernel system call D>k(#vYKB
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x86 CPU,Windows,MASM32 _-BP?'lN
.386 lU
62$2
.model flat,stdcall r 10VFaly
option casemap:none 5Pf=Uj6D
;Include 文件定义 o2dO\$'
include windows.inc 1\}XL=BE
include user32.inc Z,"4f*2
includelib user32.lib .Wt3|?\=nd
include kernel32.inc %%ouf06.|
includelib kernel32.lib (Yz[SK=U}
;数据段 'IY?=#xr'`
.data \ Bj{.jL
szCaption db 'A MessageBox!',0 &|Wqzdo?#
szText db 'Hello,world!',0 7j)ky2r#
;代码段 /=YNkw5
.code "gy&eR>
start: hDi~{rbmc
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 3Ewdu
invoke ExitProcess,NULL O?g;Ny
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> @%fTdneH
end start bN-!&Td
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lrZ]c:%k
AWK G_?U?:!AC
BEGIN { print "Hello, world!" } -TVwoK
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3!8(A/YP;
BASIC
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传统版BASIC(例如GWBASIC): PP{9Y Vr
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10 PRINT "Hello, world!" _yg;5#3
20 END Lfn$Q3}O`$
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或在提示符输入: i{m!v6j:
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?"Hello, world!":END tTBDb
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现代版BASIC(例如Quick BASIC): WP*}X7IS
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Print "Hello, world!" rO>'QZ%
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以下的语句在Quick BASIC中同样有效: $M)SsD~
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? "Hello,world!" ;@=3
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;[;WEA
~bkO8tn
BCPL k6M D3c
GET "LIBHDR" k JmwR
lIS`_H}
LET START () BE Xr=BxBttp
$( N `:MF 9
WRITES ("Hello, world!*N") Yw#fQFm
$) 9vP;i= fr
@]q^OMLY
Bc.de&Bxz_
Befunge K?J_cnJ`
"!dlrow olleH">v ke8g tbm
, -XXsob}/8
^_@ [3bPoAr\
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Brainfuck { Z
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++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< <qfAW?tF
+++++++++++++++.>.+++.------.--------.>+.>. %W9R08`
l,l qhq\
\{`^Q+<
C qK7:[\T|?T
#include <stdio.h> %IBT85{
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int main(void) AE>W$x8P
{ Bk\Y v0
printf("Hello, world!\n"); msgR"T3'
return 0; o3hgkoF
} _!1LV[x!s
F}{%*EJ
QP.Lq}
C++ ymxA<bICS8
#include <iostream> BW)-F (v
1s(T#jh
int main() ]?+i6 [6U
{ =S{OzF
std::cout << "Hello, world!" << std::endl; Qu[QcB{ro-
return 0; m[xl)/e
} ;+XrCy!.)L
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C++/CLI WfaMu|
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int main() }(8>&
{ g>h/|bw4
System::Console::WriteLine("Hello, world!"); *JDz0M4f
} 7qyPI
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)>{.t=#
C# (C Sharp) I3.. Yk%7
class HelloWorldApp }},0#Ap
{ Rm=p}
public static void Main() (a#gCG\
{ DAb/B
System.Console.WriteLine("Hello, world!"); r|UJJ9i
} tgKr*8t{
} pM@8T25=
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U4=l`{5on
COBOL f2x!cL|Kx?
IDENTIFICATION DIVISION. Ht;Rz*}
PROGRAM-ID. HELLO-WORLD. 5h/,*p6Nje
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ENVIRONMENT DIVISION. )9"^ D
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DATA DIVISION. FShjUl>mV
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PROCEDURE DIVISION. Qz(2Iu{E]
DISPLAY "Hello, world!". c+3`hVV
STOP RUN. 6=]Gom&S
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Common Lisp 8^}/T#l
(format t "Hello world!~%") {WV"]O8IV
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DOS批处理 ~Pw9[ycn3
@echo off \ji\r ]k
echo "Hello, world!" *|Vf1R]
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Eiffel :rU.5(,
class HELLO_WORLD 3S3(Gl
t9U6\ru
creation V?S}%-a
make Jm<NDE~rw
feature qm!cv;}c1
make is aI&~aezmN
local `hO%(9V9
io:BASIC_IO r1< 'l
do yF(9=z"?
!!io A#cFO)"
io.put_string("%N Hello, world!") aC[G_ACwc
end -- make cxs@ph&Wk
end -- class HELLO_WORLD $B-/>Rz
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Erlang `[5xncZ-
-module(hello). {.$7g8]I
-export([hello_world/0]). tV(iC~/
-:%QoRCy
hello_world() -> io:fwrite("Hello, World!\n"). V\zcv @
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`f}s<At
Forth z)hK 2JD
." Hello, world!" CR 3%'`^<-V
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MS;^:t1`
Fortran }d}gb`Du
WRITE(*,10) QD,m`7(
10 FORMAT('Hello, World!') tcj"rV{G
STOP =h4uN,
END IW!x!~e
b\ED<'
:bct+J}l~
HTML f4 S:L&
<HTML> CmBPCjh
<HEAD> $a~
<TITLE> Hello World! </TITLE> K*j
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</HEAD> o4p5`jOG@
<BODY> hx0 t!k(3
<p>Hello World!</p> zgjgEhnvU
</BODY> 4A@HR
</HTML> Wd7*7']
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u;$qJjS
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H 4ct-K)Ris
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<lFHmi$qt{
INTERCAL NOs00 H
PLEASE DO ,1 <- #13 ?MFC(Wsh
DO ,1 SUB #1 <- #238 e*T^:2oRl
DO ,1 SUB #2 <- #112 aQmS'{d?^
DO ,1 SUB #3 <- #112 CrI<rD%'
DO ,1 SUB #4 <- #0 &'12,'8
DO ,1 SUB #5 <- #64 _DSDY$Ec
DO ,1 SUB #6 <- #238 Zuzwc [Z1
DO ,1 SUB #7 <- #26 xBxiBhqzF
DO ,1 SUB #8 <- #248 (nLzWvN
DO ,1 SUB #9 <- #168 m#BXxS#B<_
DO ,1 SUB #10 <- #24
+!u9_?Tp
DO ,1 SUB #11 <- #16 JvXuN~fI{[
DO ,1 SUB #12 <- #158 poafGoH-Y
DO ,1 SUB #13 <- #52 E'{:HX
PLEASE READ OUT ,1 uB"B{:Kz
PLEASE GIVE UP .>;??BG}
W^3 Jg2gE
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Java 0"e["q{|
public class Hello Pxf>=kY
{ >6Pe~J5,:
public static void main(String[] args) EgG3XhfS
{ VvIUAn
System.out.println("Hello, world!"); _"p(/H
} +Iuu8t
} } OIe!
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:7X4VHw/
JSP ;L fn&2G
<% 392(N(
out.print("Hello, world!"); SVVE b6&
%> ?wkT=mv
olQP>sa
1@I#Fv
MIXAL #Db^*
TERM EQU 19 the MIX console device number VM5'd
ORIG 1000 start address VTL_I^p
START OUT MSG(TERM) output data at address MSG U:~]>B $
HLT halt execution pSQX
MSG ALF "MIXAL" <[ dt2)%L>
ALF " HELL" " TCJT390
ALF "O WOR" h(kPf]0
ALF "LD " ^(
END START end of the program `%[m%Y9h
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<=|^\r
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Nuva 8cZ[Kl%
<..直接输出..> FP&Ykx~
Hello, world! lGahwn:
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<..或者..> ,k.")
0
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<. u `w w
// 不带换行 l$!ExXEZO;
? "Hello, world!" K+/wJ9^B
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// 或者 T0fm6
J
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// 带换行
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?? 'Hello, world!' J0k!&d8
.> Tr>_R%b K
T] H'l
8)iI=,T*
OCaml hy#nK:B
let main () = MA9E??p3\
print_endline "Hello world!";; +(Hp ".gU
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1Bs t|
Pascal j/oc+ M^
program Hello; %Qj$@.*:
begin +Goh`!$Rj9
writeln('Hello, world!'); |#t^D.j
end. !ck luj
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6 jb"
q@S\R
7R
Perl \5N\NN @J
#!/usr/local/bin/perl bhDqRM
print "Hello, world!\n"; g'k m*EV
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bRFZ:hu l
PHP ~~WY?I-
<?php |Z>}#R!,P
print("Hello, world!"); 1:7fV@jw
?> p:tp|/
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{pXX%>
Pike c'?EI EP
#!/usr/local/bin/pike %t* 9sh
int main() JI-.SR
{ AWFq5YMSI
write("Hello, world!\n"); zO9WqP_`iR
return 0; c<q33dZ!*
} |R91|-H
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@;`
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PL/I KX\=wFbP)
Test: procedure options(main); E rA*a3
declare My_String char(20) varying initialize('Hello, world!'); 9;*B*S~znW
put skip list(My_String); OP(om$xm
end Test; fi'zk
LD WYFOGQ
&sn-;r
Prolog YJwI@E(l$
goal .j)DE}[q>
write("hello,world!").
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v8\_6}*I
2sqH
>fen
Python oKkDG|IE
#!/usr/local/bin/python wE9z@\z]
print "Hello, world!" R'_F9\
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,Cm1~ExJ
REXX ;)f,A)(Z
say "Hello, world!" ,{ 0&NX
o@$pyU8
I+Qt5Ox
Ruby aY,'^S
#!/usr/bin/ruby { O=_c|u{N
print "Hello, world!\n" Y^#>3T
>;M STHeW
6ypHH
2X
Scheme tG"EbWi
(display "Hello, world!") uu0t}3l
(newline) NeEV=+<-G
z6qx9x|Ij
[p0_I7
sed (需要至少一行输入) 6m(+X
MS
sed -ne '1s/.*/Hello, world!/p' |1!OwQax
9QF,ynE
s}gdi
Smalltalk W+V &