“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。 PuaosMn(9
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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》。 #:|?t&On
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以下是用不同语言写成的Hello World程序的几个例子: hH}/v0_ jb
Ada e9_+$Oo
with Ada.Text_Io; use Ada.Text_Io; 6sl<Z=E#
procedure Hello is VWy:U#;+8
begin lg>AWTW[
Put_Line ("Hello, world!"); lM*O+k
end Hello; 2H[aY%1T
Nh9!lB m*]
]ECZU
汇编语言 e0HP~&BRs
%}XMhWn{
x86 CPU,DOS,TASM sVd_O[
MODEL SMALL N RSse"
IDEAL QV$dKjMS
STACK 100H B5HdC%8/}
!h>$bm
DATASEG xm5FQ) T
HW DB 'Hello, world!$' 2gAdZE&Y
FM"BTA:C
CODESEG ~#_$?_/(
MOV AX, @data \C#b@xLnX
MOV DS, AX 5,BkwAr+6[
MOV DX, OFFSET HW Y&f[2+?2NK
MOV AH, 09H Wmxw!
INT 21H $S8bp3)
MOV AX, 4C00H +A ?+G
INT 21H >5O y^u6Ly
END $Wzv$4;
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x86 CPU,GNU/Linux,NASM E)wT+\
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 14 'x-w^~k
;Enter this into "hello.asm" then type: #4 &N0IG
;"nasm -f elf hello.asm" 1r&
?J.z25
;"ld hello.o -o hello" |/=p
;"./hello" HcVs(]tIW
EJaaW&>[
section .data ;data section declaration +1jqCW
msg db 'Hello World!',0AH %GCd?cFF
len equ $-msg ;string length D.R|HqZ
|uwteG5?$s
section .text ;code section declaration TL{pc=eBo
global _start ;entry point (start of execution) ku9FN
_start: mov edx,len ;string length vKf;&`^qE
mov ecx,msg ;string start GnrW{o
mov ebx,1 ;file handle: stdout
"rDzrz
mov eax,4 ;sys_write }_ :#fE
int 80h ;kernel system call JvJ!\6Q@
GVc[p\h(
mov ebx,0 ;return value mRnzP[7-\)
mov eax,1 ;sys_exit ae#HA[\0G
int 80h ;kernel system call F"f}vl
*5'6E'
>\x_"oR
x86 CPU,Windows,MASM32 pD_eo6xX
.386 m\Fb ,
.model flat,stdcall )7"DR+;:
option casemap:none 2]RH)W86;
;Include 文件定义 `(Q_ 65y
include windows.inc obc^<ZD]
include user32.inc VueQP|
includelib user32.lib &Yks,2:P
include kernel32.inc 7U
)qC}(
includelib kernel32.lib \v
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;数据段 0R 5^p
.data X`v79`g_
szCaption db 'A MessageBox!',0 FlA\Ad;v
szText db 'Hello,world!',0 X.AWs=:-
;代码段 'j<:FUDJ
.code aco}pXz
start: l^y?L4hg)
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 6dR-HhF
invoke ExitProcess,NULL `Y({#U
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 9 c5G6n0
end start grfdvN
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aU]O$Pg{
AWK Z=Y_;dS9
BEGIN { print "Hello, world!" } q,,>:]f#
\%?8jQ'tX
7- 3N
BASIC ocA'goI-
传统版BASIC(例如GWBASIC): z'}= A
9s6>9hMb)
10 PRINT "Hello, world!" a2=uM}Hsp
20 END %)hIpxOrX
J%-lw{FC
或在提示符输入: )>X|o$2
. I&)MZ>n
?"Hello, world!":END c>WpO Z,
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现代版BASIC(例如Quick BASIC): VRQbf
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Print "Hello, world!" =.f +}y
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以下的语句在Quick BASIC中同样有效: iI@Gyq=
am'p^Z@
? "Hello,world!" pGbFg&
v!{'23`87
T.w}6?2
BCPL E
^SM`
GET "LIBHDR" mLk6!&zN
EO9kE.g
LET START () BE 7MuK/q.
$( o|^?IQ7bpf
WRITES ("Hello, world!*N") 3VRZM@i
$) qnk,E-
o )nT
wp]7Lx?F
Befunge @F(3*5c_Y
"!dlrow olleH">v mp+\!
, Z/6'kE{l
^_@ K'{W9~9Lq
! N"L`RWD
ekl?K~
Brainfuck ({H+ y
9n
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< o~.o^0Y
+++++++++++++++.>.+++.------.--------.>+.>. }2BH_
2
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cxP9n8CuT
C @(,{_c]
#include <stdio.h> '^oGDlkr H
*/5<L99v
int main(void) ^;CR0.4
{ X\3,NR,
printf("Hello, world!\n"); ;*g*DIR
return 0; H6PXx
} kO,VayjT
Z*vpQBbu
l`M5'r]l
C++ d[>N6?JA/
#include <iostream> {Z?$Co^R
X4P}aC
int main() ll<9f)
{ z7t'6Fy9'
std::cout << "Hello, world!" << std::endl; Lr24bv\
return 0; =N@)CB7a
} 9OQ0Yc!3
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8%2rgA
C++/CLI WDoKbTv
int main() ><#2O
{ mS)|6=Y
System::Console::WriteLine("Hello, world!"); vzohq1r5
} 9HJ'p:{)
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.!r`f
kuTq8p2E
C# (C Sharp) GEe 0@q#YA
class HelloWorldApp m_E[bDON
{ ?LV-W
public static void Main() B::4Qme
{ LpiHoavv
System.Console.WriteLine("Hello, world!"); x8pbO[_|
} ,.6J6{
} }W__ffH
/XW&q)z-Hl
/mMAwx
COBOL F; MF:;mM
IDENTIFICATION DIVISION. z*dQIC
PROGRAM-ID. HELLO-WORLD. 6<qwP?WN
sx[&4 k[
ENVIRONMENT DIVISION. 22al
;Oi[:Ck
DATA DIVISION. Hn#GS9d_?
'Ffy8z{&3
PROCEDURE DIVISION. t4jd
KYA
DISPLAY "Hello, world!". j5,^9'
STOP RUN. y} $P,
%EJ\|@N:
pT3X/ra
Common Lisp c4ZuW_&:
(format t "Hello world!~%") #LN5&i;s
!sfXq"F
~|r'2V*
DOS批处理 eC+"mhB
@echo off QX/X {h6
echo "Hello, world!" *%OYAsc
;LQ# *NjL\
RVgPH<1X@e
Eiffel _4.]A3;}
class HELLO_WORLD >op:0on]}
c|\ZRBdI
creation WNn[L=f
make #hD}S~
feature 96"yNqBf
make is V9fGVDl;
local +{")E)
io:BASIC_IO <fC@KY>#
do T}L^CU0
!!io 5|<yfk8*J
io.put_string("%N Hello, world!") "EcX_>
end -- make |+Hp+9J
end -- class HELLO_WORLD ~Ho{p Oq
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93W
Erlang .N~PHyXZR
-module(hello). y*VQ]aJ
-export([hello_world/0]). KA 5~">l
AW,v
hello_world() -> io:fwrite("Hello, World!\n"). v`#j
,:#,}w_HyO
!US8aT
Forth c;:">NR
." Hello, world!" CR w(76H^e
ID67?:%r
K3vseor
Fortran v229H<
WRITE(*,10) _ztZ>'
10 FORMAT('Hello, World!') 0>,.c2),
STOP ]{f^;y8
END &8[ZN$Xe"
CS/Mpmsp
,O:EX0
HTML :a_BD
<HTML> H~A"C'P3#
<HEAD> _j:UGMTi(U
<TITLE> Hello World! </TITLE> ;{<aA 5
</HEAD> \~JNQ&_o
<BODY> )E'Fke
<p>Hello World!</p> $&cz$jyY
</BODY> YBb)/ZghY
</HTML> 0HGl f
[8>z#*B
&49u5&TiP
HQ9+ &+mV7o
H A/q2g7My
ifXW
Z[",$Lt
INTERCAL 21r==
H$
PLEASE DO ,1 <- #13 T vrk^!
DO ,1 SUB #1 <- #238 2O
eshkE
DO ,1 SUB #2 <- #112 e]lJqC
DO ,1 SUB #3 <- #112 '
|&>/dyq
DO ,1 SUB #4 <- #0 ,i?)
DO ,1 SUB #5 <- #64 9n1ZVP.ag
DO ,1 SUB #6 <- #238 s}6+8 fE"
DO ,1 SUB #7 <- #26 ze`1fO|%
DO ,1 SUB #8 <- #248 n[!;yO
DO ,1 SUB #9 <- #168 ;Vg^!]LL#
DO ,1 SUB #10 <- #24 1EVfowIl
DO ,1 SUB #11 <- #16 \)ip>{WG
DO ,1 SUB #12 <- #158 rwiw
Rh
DO ,1 SUB #13 <- #52 C:]s;0$3'9
PLEASE READ OUT ,1 =M7TCE
PLEASE GIVE UP EXuLSzQwv
S_J,[#&
|xn#\epy@
Java *HR+a#o
public class Hello 9B
/s
{ U^MuZ
public static void main(String[] args) .%q$d d>>
{ $@_{p*q
System.out.println("Hello, world!"); 4SgF,ac3r
} ?w-1:NWjt
} RctU' T
6?N4l ]l
ebqg"tPN{
JSP X0`j-*,FX
<% \[yr=X
out.print("Hello, world!"); pz{'1\_+9
%> )zU:
i3#'*7f%j
4'' ,6KJ@
MIXAL >OV<_(S4
TERM EQU 19 the MIX console device number nX|Q~x]
ORIG 1000 start address +b^]Pz5
START OUT MSG(TERM) output data at address MSG aX;A==>
HLT halt execution hk%k(^ekU]
MSG ALF "MIXAL" U&X2cR &a
ALF " HELL" GcT;e5D
ALF "O WOR" SxJ$b
ALF "LD " Gqb])gXpl
END START end of the program H+ lX-,
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',7a E@PJ
Nuva <47k@Ym
<..直接输出..> OF[?Z
Hello, world! mzWP8Hlw
)0^># k
<..或者..> d+;gw*_Ei
?]c+j1i
<. LXj5R99S
// 不带换行 8$0\J _
? "Hello, world!" jNA1O68N
>{C\H.N
// 或者 gY(1,+0-
fiVHRSX60
// 带换行 jfD1
?? 'Hello, world!' .h4\{|
.> 3GF2eS$$P
&SH1q_&BQ
b O=yi)
OCaml v!9i"@<!
let main () = D8%AV;-Y
print_endline "Hello world!";; @Y}uZ'jt'
E V2 )
w7FoL
Pascal oKA& An
program Hello; ^rL_C}YBj-
begin /)EY2Y'
writeln('Hello, world!'); K B!5u 9
end. i0:>Nk
:]PM_V|
P`S@n/}
Perl &fwS{n;U
#!/usr/local/bin/perl g JjN<&,
print "Hello, world!\n"; er2cQS7R
.m;G$X|3U
)55\4<ty
PHP d--'Rn5
<?php nPN?kO=]
print("Hello, world!"); PE"v*9k
?> Ya#h'+}
)}MHx`KT2
s
=Umj'1k
Pike KVPR}qTP;
#!/usr/local/bin/pike BQ/PGY>
int main() tnz+bX26
{ c3)C{9T](
write("Hello, world!\n"); t
P"\J(x
return 0; EH n"n"Y
} l>6@:nq|R
9MY7a=5E~
L?5f+@0.
PL/I \(
)#e
Test: procedure options(main); }7s>B24J
declare My_String char(20) varying initialize('Hello, world!'); hePPxKQ-
put skip list(My_String); ^e Gue
end Test; jZpa0g rA
At6qtoPRA
>?lOE
-}^
Prolog 52d^K0STC
goal C[uOReo
write("hello,world!"). ka"337H
. ]@=es
=JS;;PzX[
Python id^sr
Mw
#!/usr/local/bin/python 445o DkG
print "Hello, world!" MFt*&%,JX
l"(6]Z 4
e`K)_>^n#
REXX l@JSK;
say "Hello, world!" lFSe?X^
h3*
x[W
\4d.sy0&>-
Ruby .8WXC
#!/usr/bin/ruby 3;[DJ5
print "Hello, world!\n" A"v{~
5J2=`=FK
1ocJ+
Scheme ;CHi\+` 5
(display "Hello, world!") ~utJB 'gr
(newline) ziE*'p
L';MP^
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