“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。 eUVhNg
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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》。 wZ%a:Z4TcM
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以下是用不同语言写成的Hello World程序的几个例子: F nc MIzp
Ada G@+R!IG
with Ada.Text_Io; use Ada.Text_Io; ZZ324UuATX
procedure Hello is gZ>)
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begin oe*CZ
Put_Line ("Hello, world!"); P[%nD cB
end Hello; REGk2t.L
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汇编语言 _J X>#h
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x86 CPU,DOS,TASM e X{#FgFc
MODEL SMALL 8'*/|)Hn
IDEAL WNSY@q
STACK 100H gVI{eoJ
n09P!],Xa
DATASEG *TgD{>s
HW DB 'Hello, world!$' [ 0z-X7=e
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CODESEG V [Wo9Y\
MOV AX, @data a7}O.NDf
MOV DS, AX ;-^8lWt
MOV DX, OFFSET HW ~7>D>!!
MOV AH, 09H O_ d[{e=5`
INT 21H g`(3r
MOV AX, 4C00H c<ORmg6
INT 21H dwqR,|
END d]K$0HY
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x86 CPU,GNU/Linux,NASM %W^Zob
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ?k^~qlye
;Enter this into "hello.asm" then type: b8LA|#]i
;"nasm -f elf hello.asm" 4x-K0
;"ld hello.o -o hello" Kz"&:&R"
;"./hello" r1BL?&X-
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section .data ;data section declaration zG)vmysJf
msg db 'Hello World!',0AH aen0XiB6~^
len equ $-msg ;string length l\WN
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section .text ;code section declaration V-9\@'gc
global _start ;entry point (start of execution) .Vrl:
_start: mov edx,len ;string length OCELG~
mov ecx,msg ;string start >BZ,g!N,J}
mov ebx,1 ;file handle: stdout /s@j{*Om
mov eax,4 ;sys_write C@Wd Pjxj
int 80h ;kernel system call o8X? 1
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mov ebx,0 ;return value "j8`)XXa(
mov eax,1 ;sys_exit 0"{-<Wot}
int 80h ;kernel system call \U>|^$4 #5
G_`Ae%'h
t=fr`|!
x86 CPU,Windows,MASM32 w!jY(WKU
.386 PlR$s
.model flat,stdcall e5d STc`
option casemap:none phR:=Ox|1
;Include 文件定义 89j*uT
include windows.inc trZU_eouI
include user32.inc P)O:lYX
includelib user32.lib ^Rh}[
include kernel32.inc *!9=?
includelib kernel32.lib +DaKP)H\:
;数据段 c8Nl$|B
.data Nw '$r
szCaption db 'A MessageBox!',0 Q^8/"aV\
szText db 'Hello,world!',0 mFmxEv
;代码段 tL M@o|:
.code gwbV$[.X
start: B'I_i$g4w
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK (duR1Dz
invoke ExitProcess,NULL kqjj&{vPFJ
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 3Ww 37V>h
end start ~gaWZQXyu
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AWK QjKh#sU&
BEGIN { print "Hello, world!" } urg^>n4V]
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aeDhC#h
BASIC 49ehj1Se
传统版BASIC(例如GWBASIC): WmkCV+thA
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10 PRINT "Hello, world!" kGAB'
20 END mqbCa6>_S
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或在提示符输入: U6.hH%\}@
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?"Hello, world!":END @Z5,j)
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现代版BASIC(例如Quick BASIC): k2(k0HFR
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Print "Hello, world!" vl~HV8MAv
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以下的语句在Quick BASIC中同样有效: P`avn
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? "Hello,world!" aQ-SrxmO8
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86>@.:d
BCPL sN K^.0
GET "LIBHDR" r4d#;S9{o
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LET START () BE M9G?^mW1sT
$( %K,cGgp^)
WRITES ("Hello, world!*N") 4I9Yr
$) 2Bi?^kQ#
;p7R~17
u@tH6k*cBz
Befunge "gFw:t"VV
"!dlrow olleH">v BF 0#G2`h>
, (b.4&P"0
^_@ UCj:]!P
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^Vi{._r
Brainfuck gjx-tp 1.
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< qMoo#UX
+++++++++++++++.>.+++.------.--------.>+.>. -3 Sb%V\
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C ^"~r/@l
#include <stdio.h> ;GKL[tI"
oF a,IA
int main(void) zG{jRth
{ i'.D=o
printf("Hello, world!\n"); XMz*}B6GQ
return 0; {Us^4Xe
} XpYd|BvW
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M!i*DU+SE
C++ gW<4E=fl
#include <iostream> RF;[:[*W
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int main() y}is=h3
{ ~0[(-4MA
std::cout << "Hello, world!" << std::endl; (BngwLVDK
return 0; )CHXfO w
} =k,?+h~
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C++/CLI fP6\Ur
int main() (P=WKZMPN
{ zg'.f UZ
System::Console::WriteLine("Hello, world!"); [#YzU^^Ib
} (5CgC<
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C# (C Sharp) [ LQOP3f
class HelloWorldApp +SE \c
{ @.c[z D
public static void Main() sSc~q+xz
{ `7'^y
System.Console.WriteLine("Hello, world!"); 2h#.:!/SMw
} )\PX1 198
} IuA4eDr^Y%
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COBOL D>;_R
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IDENTIFICATION DIVISION. "shX~zd5
PROGRAM-ID. HELLO-WORLD. H:OpS-b
s5 {B1e
ENVIRONMENT DIVISION. 8B]\;m
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DATA DIVISION. f mJK+
cr|]\
PROCEDURE DIVISION. CU*TY1%
DISPLAY "Hello, world!". ,0ilNi>
STOP RUN. &5.J y2hO]
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Common Lisp Zy.A9Bh~
(format t "Hello world!~%") 8)1=5n
wt;`_}g
iz)r.TJ
DOS批处理 ]N;nq
@echo off w\UAKN60
echo "Hello, world!" 3aBE[
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w<zzS:PF*
Eiffel zb4{nzX=
class HELLO_WORLD j%D{z5,nKm
iq?T&44&
creation ~wF3$H.@;
make +> d;%K
feature >8x)\'w
make is 4mKH
|\g
local SSTn|
io:BASIC_IO *M*WjEOA
do xWqV~NnE
!!io :475FPy]
io.put_string("%N Hello, world!") <}h<By)
end -- make $tI<MZ&Z
end -- class HELLO_WORLD J]w3iYK
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Erlang Nd_A8H,&B
-module(hello). ~c]
q:pU2
-export([hello_world/0]). r[T(R9k
_Pa@%/
hello_world() -> io:fwrite("Hello, World!\n"). \jV2":[%c
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MxUbx+_N
Forth ?.uhp
." Hello, world!" CR k@s<*C
ssS"X@VZ
\
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Fortran -;ra(L`
WRITE(*,10) r}sO},i
10 FORMAT('Hello, World!') ^$C&{%
STOP :VWN/m
END MK @rx6<9
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HTML (d@(QJ
<HTML> !Q<3TfC
<HEAD> {Rb;1 eYj
<TITLE> Hello World! </TITLE> )m+O.`x
</HEAD> zDEgC
<BODY> ZMr[:,Jp
<p>Hello World!</p> EkRx/
</BODY> 1Y;.fZE
</HTML> isy[RAP<
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H B2*>7 kc_s
n@R/zy
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INTERCAL wtf H3v
PLEASE DO ,1 <- #13 GUD]sXSj
DO ,1 SUB #1 <- #238 W8u&5#$I
DO ,1 SUB #2 <- #112 w1(5,~OB
DO ,1 SUB #3 <- #112 `8#xO{B1
DO ,1 SUB #4 <- #0 S 1^t;{"
DO ,1 SUB #5 <- #64 g.blDOmlc
DO ,1 SUB #6 <- #238 [`s.fkb8
DO ,1 SUB #7 <- #26 1*$6u5.=F
DO ,1 SUB #8 <- #248 :is2 &-|x
DO ,1 SUB #9 <- #168 |,S]EHIy
DO ,1 SUB #10 <- #24 nUVk;0at
DO ,1 SUB #11 <- #16 w-$iKtb.
DO ,1 SUB #12 <- #158 N!ay#V
DO ,1 SUB #13 <- #52 ,UC|[-J
PLEASE READ OUT ,1 _Gt;=
PLEASE GIVE UP 6R8>w,
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1Z;cb0:
Java fx4#R(N
public class Hello g:xg ~H2
{ ZREy I(_
public static void main(String[] args) {Y=k`t,
{ AZ^>osr
System.out.println("Hello, world!"); *?C8,;=2r
} 4M|C>My
} {06ClI
!};Ll=dz
Z%LS{o~LK.
JSP ]N0B.e~D
<% _A&
[rBm|
out.print("Hello, world!"); " W{rS4L
%> mA%}ijR6y
,'t&L]
d8R|0RZ
MIXAL iRca c[uV
TERM EQU 19 the MIX console device number GUM-|[~
ORIG 1000 start address $FIJI^Kd7
START OUT MSG(TERM) output data at address MSG >Di`zw~
HLT halt execution _*[vKS A&
MSG ALF "MIXAL" VKu_l
ALF " HELL" !>!jLZ0
ALF "O WOR" ubsv\[:C
ALF "LD " 7bE`P[
END START end of the program =B'Yx
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z#|Auc0
Nuva _8-1wx
<..直接输出..> Er8F_,M+
Hello, world! W!kF(O
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<..或者..> Xt:j~cVA
lA4J#
<. $Jn.rX0}$
// 不带换行 xiQc\k$
? "Hello, world!" "?<`]WG\
/#"9!8%V
// 或者 >b#CR/^z
X}h}3+V
// 带换行 UUtSme
?? 'Hello, world!' .wWf#bB
.> e.(d?/!F_
=>Z4vWX*
n}1hmAhZ
OCaml qh&KNJ>1
let main () = 9^ C6ZgNS
print_endline "Hello world!";; Ln+ k_
*!Gb_!98
;[g~h |{6
Pascal Eg&Q,dH[
program Hello; 4\ )WMP
begin $ntC{a>&
writeln('Hello, world!'); XgKYL<