“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。 u33zceE8
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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》。 ; J2-rh
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以下是用不同语言写成的Hello World程序的几个例子: k5X b}@
Ada ^/{4'\p
with Ada.Text_Io; use Ada.Text_Io; r~[B_f!
procedure Hello is r{V.jZ%p'Z
begin gfV DqDF
Put_Line ("Hello, world!"); 6z]`7`G
end Hello; 'bm:u
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汇编语言 ;z0"Ox=7
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x86 CPU,DOS,TASM `
@>ZGL:
MODEL SMALL Ps 7_-cH
IDEAL L?.7\a@
STACK 100H ;o%:7&
\-G5l+!
DATASEG M8Juykw
HW DB 'Hello, world!$' TMY{OI8 a
U6a zhi&,
CODESEG +_-Y`O!Q
MOV AX, @data '^B3pR:
MOV DS, AX .$^wy3:F"
MOV DX, OFFSET HW [,nfAY
MOV AH, 09H 9C>ynH
INT 21H (n}%a6M
MOV AX, 4C00H IrUi
Eq
INT 21H Vs|sw
END +/}_%Cf8
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HIrEv
x86 CPU,GNU/Linux,NASM FSVS4mtiX\
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). v0u\xX[H;
;Enter this into "hello.asm" then type: >eu
`!8
;"nasm -f elf hello.asm" -g<cinNSp
;"ld hello.o -o hello" ?.~]mvOR
;"./hello" =E;
#OZO
j^rYFS
w:Q
section .data ;data section declaration Jtpa@!M
msg db 'Hello World!',0AH Q+HZ?V(
len equ $-msg ;string length Ef-a4Pi
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section .text ;code section declaration QWKs[yfdo
global _start ;entry point (start of execution) `M,Nd'5&|
_start: mov edx,len ;string length z6Fun
mov ecx,msg ;string start ]}/mFY?7
mov ebx,1 ;file handle: stdout 4 ;^g MI9
mov eax,4 ;sys_write Sr-|,\/O
int 80h ;kernel system call tb:
Mo~ki"9.
mov ebx,0 ;return value 5nY9Ls(e
mov eax,1 ;sys_exit exsQmbj* %
int 80h ;kernel system call |}%(6<
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x86 CPU,Windows,MASM32 ~NA1SZ{Y+
.386 }z8{B3K
.model flat,stdcall P_v0))n{
option casemap:none $R8>u#K!
;Include 文件定义 C0P*D,
include windows.inc Q
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include user32.inc `D4oAx d9
includelib user32.lib umqLKf=x!
include kernel32.inc `:V}1ioX5
includelib kernel32.lib _r~!O$2
;数据段 5XI;<^n2
.data p1Y+
szCaption db 'A MessageBox!',0 7 kEx48
szText db 'Hello,world!',0 C{8i7D
;代码段 0`V3s]%iu
.code OiYNH~hv
start: z|Hy>|+
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK G`9cd\^
invoke ExitProcess,NULL w 9/nVu
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> [0h* &
end start ]z+*?cc
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AWK UY1JB^J$
BEGIN { print "Hello, world!" } ,:Rft
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BASIC )GB3=@
传统版BASIC(例如GWBASIC): |\i:LG1
*?EO n -
10 PRINT "Hello, world!" LDT'FwMjy
20 END XRClBTKF
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或在提示符输入: 7( yXsVq
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?"Hello, world!":END 9@$tiDV
6T R8D\
现代版BASIC(例如Quick BASIC): sN6 0o 7.
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Print "Hello, world!" y%{*uH}SL
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以下的语句在Quick BASIC中同样有效: ipx@pNW;"
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? "Hello,world!" f}L>&^I)
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A8_\2'b
BCPL LFk5rv'sM0
GET "LIBHDR" A6@+gP<
R=][>\7]}
LET START () BE ]&3s6{R
$( o 8~f
WRITES ("Hello, world!*N") g28S3 '2
$) s|{^ }4{
n;-x!Gs
y8<lp+
Befunge :J=+; I(UI
"!dlrow olleH">v ^BF@j4*~
, NZfo`iHAN
^_@ 9s;!iDFn
7i-W*Mb:
k7z(Gbzu
Brainfuck }Q{
=:X9
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< H$k![K6Uj
+++++++++++++++.>.+++.------.--------.>+.>. b9W<1eqF
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C DuTlYXM2^
#include <stdio.h> hO+O0=$}wN
9J-!o]f .b
int main(void) /tI d#/Y
{ *pcbwd!/
printf("Hello, world!\n"); SXHru Z
return 0; b6LC$"t0
} N=O+X~
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k$UzBxR
C++ =\ti<
#include <iostream> $>S}acuC
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int main() \dp9@y[^
{ -7Aw
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std::cout << "Hello, world!" << std::endl; (!XYH@Mz<w
return 0; Pv{,aV\I}
} ^| FVc48{
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C++/CLI \Age9iz&
int main() X-G~/n-x
{ 1,%#O;ya
System::Console::WriteLine("Hello, world!"); !SO$k%b}!
} OIXAjU*N
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C# (C Sharp) Zgy2Pot
class HelloWorldApp @??c<]9F
{ UuOLv;v
public static void Main() ?|Q5]rhs
{ XW&8T"q7
System.Console.WriteLine("Hello, world!"); HYI1 o/}
} #T$'.M
} ! 6p)t[s
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[o[v"e\w
COBOL .J1Hg
IDENTIFICATION DIVISION. ) v[Knp'
PROGRAM-ID. HELLO-WORLD. vS J<
11@2 ;vw
ENVIRONMENT DIVISION. bWC~Hv
[!dnm1
DATA DIVISION. Gwrx)Mq
k^dCX+
PROCEDURE DIVISION. ,Zcx3C:#
DISPLAY "Hello, world!". ?%za:{
STOP RUN. pRxlvVt
D
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]=86[A-2N
Common Lisp s:jL/%+COZ
(format t "Hello world!~%") 'De'(I
&6|^~(P?
!irX[,e
DOS批处理 &J&w4"0N'
@echo off J,^pt Ql
echo "Hello, world!" Y(I*%=:$
v4k=NH+w
i:Z.;z$1
Eiffel !7NzW7j
class HELLO_WORLD xU\:Vid+A
YZ%f7BUk
creation Alk*
"p
make >gi{x|/
feature s<r.+zqW
make is _qzo):G.s
local |_xiG~
io:BASIC_IO /hEGk~
do TNPGw!
!!io .IAHy)li"
io.put_string("%N Hello, world!") _OxnHf:|
end -- make Wn,g!rB^@
end -- class HELLO_WORLD aXK%m
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Erlang _8b>r1$
-module(hello). $5"-s]
-export([hello_world/0]). 'm!11Phe
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hello_world() -> io:fwrite("Hello, World!\n"). \=G
Xe.}4d
W4rw ;(\
NMY!-Kv 5
Forth l<K.!z<-:8
." Hello, world!" CR mlw BATi
tAu|8aL
UCj#t!Mw
Fortran Pymh^i
WRITE(*,10) Xiedg y
10 FORMAT('Hello, World!') {e
STOP +VW]%6+
END [Z Gj7
B l/e>@M
.-26 N6S
HTML ~V-
o{IA
<HTML> K$v Rk5U
<HEAD> Pk]9.e1_
<TITLE> Hello World! </TITLE> ! tPK"k
</HEAD> `V_/Cz_}D
<BODY> [^=8k2
<p>Hello World!</p> NGQIoKC
</BODY> L#@$Mtc
</HTML> -Izg&u &
VM|)\?Q
B;7s ]R
HQ9+ qq%_ksQ
H (V?`W7
ZU@jtqq
;S27m]Q?
INTERCAL W" ,jZ"7
PLEASE DO ,1 <- #13 5e8-?w%e
DO ,1 SUB #1 <- #238 m/B9)JzY
DO ,1 SUB #2 <- #112 95&sFT
C
DO ,1 SUB #3 <- #112 \mit&EUh}
DO ,1 SUB #4 <- #0 I,?LZ_pK
DO ,1 SUB #5 <- #64 Z$K%@q,10+
DO ,1 SUB #6 <- #238 2xBGs9_Y
DO ,1 SUB #7 <- #26 =|zLr"
DO ,1 SUB #8 <- #248 W]7?;#Hpk
DO ,1 SUB #9 <- #168 g8@HAV^H
DO ,1 SUB #10 <- #24 {"(|oIo{
DO ,1 SUB #11 <- #16 s_?*R
DO ,1 SUB #12 <- #158 -*j;
DO ,1 SUB #13 <- #52 1L9
<1
PLEASE READ OUT ,1 ]>!_OCe&
PLEASE GIVE UP 1fp&"K:yR
ArKrsI#H-
j*\MUR=
Java n!orM5=:O
public class Hello hrxASAfg6
{ `b$I)UUm
public static void main(String[] args) "d*
{ L)"w-,zy
System.out.println("Hello, world!"); %['F[Mo
} j+v)I=
} :{i mRa-
A[Xw |9
BNLall
JSP a[#BlH
<% E_*T0&P.P
out.print("Hello, world!"); #jR?C9&!(
%> HM
x9M$
sbb{VV`I
'a9.JS[pj
MIXAL '?[msX"aqa
TERM EQU 19 the MIX console device number 7k3\_BHyb\
ORIG 1000 start address RR9s%>^
START OUT MSG(TERM) output data at address MSG (9h{6rc=I
HLT halt execution <Z wEdq
MSG ALF "MIXAL" o{eG6
ALF " HELL" z oXF"Nz
ALF "O WOR" AS398L
ALF "LD " Oms`i&}"}
END START end of the program ={d\zjI$
6
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kM7
T~d';P
Nuva ^Y!`wp2vn
<..直接输出..>
D-/A>
Hello, world! ^B>6!
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<..或者..> <aS1bQgaU
jKs8i$q
<. PI?[
// 不带换行 Z7/lFS'~N
? "Hello, world!"
ekXHfA!i%
1,,: 4*)
// 或者 GQQ6 t
uW|y8 BP $
// 带换行 B;$5*3D+
?? 'Hello, world!' k3w#^
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.> 3Hr%G4
qxNV~aK
x3
<Lx^;
OCaml xae7#d0
let main () = bL<cgtz7)
print_endline "Hello world!";; yCVBG
j@f(cRAf#
iQQJ`
Pascal 4i \n1RW
program Hello; K, Vl.-4?
begin m;|I}{r
writeln('Hello, world!'); _{8boDX#
end. H3b`)k
sFr
Ki2_Nh>tM
%$U+?lk}
Perl g|Cnj
#!/usr/local/bin/perl {[eY/)6H
print "Hello, world!\n"; qp8;=Nfa
#=2~MXa@z7
(uE_mEIsv
PHP {Ffr l(*
<?php E6uIp^E
print("Hello, world!"); (<