“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。 "gajBY
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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》。 u!Nfoq&'u
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以下是用不同语言写成的Hello World程序的几个例子: k:)u7A+
Ada LEnP"o9ZW
with Ada.Text_Io; use Ada.Text_Io; 7h&`BS
procedure Hello is =1OAy`8
begin `4$Qv'X*
Put_Line ("Hello, world!"); ":^
NLBm>5
end Hello; i3&B%JiLX
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Fd,+(i D
汇编语言 -JhjTA
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x86 CPU,DOS,TASM B%:9P
MODEL SMALL YGV#.
IDEAL m&~Dj#%(w
STACK 100H @mRrA#E#{
aa%&&
DATASEG n9fA!Wic
HW DB 'Hello, world!$' fy>And*
r5da/*G/O
CODESEG }d\Tk(W
MOV AX, @data f3>6:(
MOV DS, AX v:Z4z6M-
MOV DX, OFFSET HW N?{1'=Om
MOV AH, 09H pW--^aHu
INT 21H +y4AUU:Q
MOV AX, 4C00H ^pV>b(?qw
INT 21H bKMR7&e.Ep
END n,:.]3v%
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x86 CPU,GNU/Linux,NASM X<}o>
6|d
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). agU!D[M_G
;Enter this into "hello.asm" then type: :8-gm"awL5
;"nasm -f elf hello.asm" KW7?: x
;"ld hello.o -o hello" ZMMo6;
;"./hello" .A!0.M|
ZWhmO=b!
section .data ;data section declaration tvH\iS #V
msg db 'Hello World!',0AH D<3V#Opw
len equ $-msg ;string length ie~fQ!rf
h k!,
section .text ;code section declaration QT= ,En
global _start ;entry point (start of execution) .0fh>kQ
_start: mov edx,len ;string length 9}jq`xSL
mov ecx,msg ;string start !+DJhw&c,
mov ebx,1 ;file handle: stdout i|]Va44
mov eax,4 ;sys_write =Pb5b6Y@6
int 80h ;kernel system call 5-WRv;
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mov ebx,0 ;return value 3AQ>>) T~
mov eax,1 ;sys_exit X*9N[#wu6
int 80h ;kernel system call }wOpPN[4
:{WrS
'bI ~61{A
x86 CPU,Windows,MASM32 }B9~X
.386 P&%eIgAOL
.model flat,stdcall "(\)
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option casemap:none jy(+
0F
;Include 文件定义 mh#FYSp
include windows.inc KA-/k@1&
include user32.inc J1]w*2
includelib user32.lib N>pmhskN?
include kernel32.inc H1%[\X?=
includelib kernel32.lib g;!@DVF$
;数据段 ?X#/1X%u:
.data @6
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szCaption db 'A MessageBox!',0 r2GK_$vd
szText db 'Hello,world!',0 r -q3+c^+
;代码段 iA3>X-x
.code d=Df.H+3
start: }uI7\\S
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK #3Ej0"A@-B
invoke ExitProcess,NULL !H1tBg]5
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> K%(XgXb(</
end start
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T~o{woq}g
qQxA@kdd
AWK V@_-H
gg
BEGIN { print "Hello, world!" } (e8G
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BASIC M,t*nG
传统版BASIC(例如GWBASIC): C3\E.u?
% nmY:}um
10 PRINT "Hello, world!" [l':G ]
20 END y5/'!L)g
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或在提示符输入: R{)
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hY=w|b=Y
?"Hello, world!":END Rj}o4s2x
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现代版BASIC(例如Quick BASIC): ran^te^Ks(
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Print "Hello, world!" S~k*r{?H})
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以下的语句在Quick BASIC中同样有效: sp=OT-Pfp
!0ce kSesr
? "Hello,world!" Y8%0;!T
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UK6xkra?#
BCPL { eEC:[
GET "LIBHDR" Oz&+{ c
p"[O#*p
LET START () BE kYxl1nv
$( rps(Jos_~
WRITES ("Hello, world!*N") yOWOU`y?
$) )_77>f%
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^Ue0mC7m
Befunge @n7t?9Bx
"!dlrow olleH">v L\ }Pzxn
, ]am~aJ|L
^_@ 6X7s 4
a#+>w5
T~%H%O(F
Brainfuck sn-)(XU!
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< $T?*0"Mj[
+++++++++++++++.>.+++.------.--------.>+.>. jow7t\wk
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Y5ogi)
C }pMP!%|
#include <stdio.h> PMgQxM*h
IS[Vap:
int main(void) {J~(#i
k
{ )?w&oIj5
printf("Hello, world!\n"); g.x=pt
return 0; /
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} a-]hW=[
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C++ 1$$37?FE
#include <iostream> {ITv&5?>
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int main() ~{L.f94N
{ J3B6X 8P'
std::cout << "Hello, world!" << std::endl; =-$!:W~
return 0; OlMBMUR:
} #B @X
tTotPPZf}
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C++/CLI 'nRp}s1^[
int main() 07x=`7hs}
{ j$@?62)6
System::Console::WriteLine("Hello, world!"); [@m[V1D
} ,>;!%Ui/p
%O#)Nq>mp
HWqLcQ d:P
C# (C Sharp) N-[n\}'
class HelloWorldApp "JkZJ#
{ ZCm1+Y$
public static void Main() L@w0N)P<!{
{ )`w=qCn1 Y
System.Console.WriteLine("Hello, world!"); Zta$R,[9h
} <rNtY ,
} ht?CHUu
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: *ERRSL)
COBOL D"L|"qJ
IDENTIFICATION DIVISION. cV-i*L4X
PROGRAM-ID. HELLO-WORLD. $`|5/,M%QN
-#Np7/
ENVIRONMENT DIVISION. I(pb-oY3!I
81Z4>F:
DATA DIVISION. ?>sQF4 V"
wGPotPdE2
PROCEDURE DIVISION. EMLx?JnP
DISPLAY "Hello, world!". osl=[pm
STOP RUN. mA&=q_gS
W.^Ei\w/t
Cz_AJ-WR
Common Lisp /Zc#j^_
(format t "Hello world!~%") 2s 7mI'
e1Ob!N-
ITONpg[f
DOS批处理 !g8*r"[UJ
@echo off [*<.?9n)or
echo "Hello, world!" (vKI1^,
}mKwFVZ
$,TGP+vH
Eiffel :/B:FY=
class HELLO_WORLD *ksb?|<Ot
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creation Q:mZ" i5
make Gz?2b#7v
feature L[rpb.'FG
make is @%c81rv?
local `\!X}xiWd
io:BASIC_IO u+i (";\
do lX"b N=E?!
!!io V]rhVMA
io.put_string("%N Hello, world!") ;1v=||V
end -- make hyfR9~
end -- class HELLO_WORLD _?.\Xc
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Erlang m4@MxQm
-module(hello). /}=a{J
-export([hello_world/0]). I:i<>kG
`fz,Lh*v
hello_world() -> io:fwrite("Hello, World!\n"). V$(/0mQV(
~AQ>g#|%
lV\lj@
Forth 6UlF5pom
." Hello, world!" CR ACb/ITu
s"i~6})K<$
,t1vb3
Fortran A[`G^$
WRITE(*,10) 4}i*cB`
10 FORMAT('Hello, World!') aVwH
STOP =h|wwQE
END K#!X><B'
DR@1z9 a
JS!*2*Wr
HTML 1* ^'\W.
<HTML> 0z7L+2#b^
<HEAD> dv, C6t2
<TITLE> Hello World! </TITLE> ?g3 ]~;#
</HEAD> ]dG\j^e|
<BODY> T1W:>~T5#
<p>Hello World!</p> Ql &0O27
</BODY> `4V"s-T'
</HTML> ^/dS>_gtHv
DI,K(_@G
XX2h(-
HQ9+ _ij$f<
H EY=FDl V
@A{m5h
K'aWCscM
INTERCAL gRAC d&)
PLEASE DO ,1 <- #13 ` H
XEZ|
DO ,1 SUB #1 <- #238 e3v5,.
DO ,1 SUB #2 <- #112 ZB[k{Y
DO ,1 SUB #3 <- #112 ong""K4H
DO ,1 SUB #4 <- #0 3?.1nGu
DO ,1 SUB #5 <- #64 ,gMy@
DO ,1 SUB #6 <- #238 (#|{%4g@>
DO ,1 SUB #7 <- #26 % ucjMa>t
DO ,1 SUB #8 <- #248 M4KWN'
DO ,1 SUB #9 <- #168 pZk6w1d!
DO ,1 SUB #10 <- #24 SdJ/4&{ !
DO ,1 SUB #11 <- #16 )DT|(^
DO ,1 SUB #12 <- #158 'e@=^FC
DO ,1 SUB #13 <- #52 _dU8'H
PLEASE READ OUT ,1 26L~X[F
PLEASE GIVE UP g?G+dnl/8
J#Z5^)$
u1Ek y/e-
Java .<#ATFmY
public class Hello 7LCp7$Cp
{ qaVy.
public static void main(String[] args) ;:mu}
{ DG[%Nhle
System.out.println("Hello, world!"); #? ?%B
} /(?@mnq_
}
oY=1C}
hO#t:WxFI
he$XLTmr:
JSP \NK-L."[
<% }$kQs!#
out.print("Hello, world!"); hat>kXm2K
%> `uo,__y
J!TBREK
.A6lj).:
MIXAL tmJgm5v
TERM EQU 19 the MIX console device number hoQ7).>
ORIG 1000 start address BFVAw
START OUT MSG(TERM) output data at address MSG r-IT(DzkD
HLT halt execution s-*._;
MSG ALF "MIXAL" 4woO;Gm
ALF " HELL" iiG f'@/
ALF "O WOR" fD4ICO @
ALF "LD " 0Fw6Dq<8-!
END START end of the program `f9gC3Hk
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Xsuwa-G!5~
Nuva z0bJ?~w,
<..直接输出..> iqwkARG"
Hello, world! Ai"-w"
mC[UXN/
<..或者..> -*a?<ES`
MCc$TttaVz
<. u~1o(Zn
=
// 不带换行 oVOm_N
? "Hello, world!" EJ84rSp
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// 或者 ZA(T
L}sx<=8.m
// 带换行 g{:<