“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。 &i?>mt
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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》。 Dk`(Wgk2
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以下是用不同语言写成的Hello World程序的几个例子: }:a:E~5y
Ada 8[xl3=
with Ada.Text_Io; use Ada.Text_Io; 8xN+LL'T{
procedure Hello is @Lf-=9
begin g<$q#l~4xH
Put_Line ("Hello, world!"); TQg~I/
end Hello; $c<NEt_\
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汇编语言 @j|=M7B
j0+l-]F-
x86 CPU,DOS,TASM E|v9khN(].
MODEL SMALL Kk9W=vd
IDEAL p?XVO#
STACK 100H n!$zO{P
A9\(vxxOpC
DATASEG .DG`~Fpk
HW DB 'Hello, world!$' UY$Lqe~
7F @#6
CODESEG @X g5E
MOV AX, @data cHjnuL0fsy
MOV DS, AX qaZQ1<e
MOV DX, OFFSET HW p]erk
MOV AH, 09H ]
g]^^
INT 21H Y~[k_!
MOV AX, 4C00H Usz O--.C
INT 21H @[. 0,
END aT"0tn^LO
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H4"'&A7$
x86 CPU,GNU/Linux,NASM -h8@B+
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). y0_z_S#gO
;Enter this into "hello.asm" then type: zqt{oN_
;"nasm -f elf hello.asm" "1HKD
;"ld hello.o -o hello"
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;"./hello" r:-,qy
%"CF-K@th
section .data ;data section declaration Hx#1TqC/
msg db 'Hello World!',0AH yHYK,3/C,
len equ $-msg ;string length ,,HoD~]rd
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section .text ;code section declaration BOdd~f%&tn
global _start ;entry point (start of execution) OD;F{Hc
_start: mov edx,len ;string length {DWL 5V#M
mov ecx,msg ;string start &UfP8GE9
mov ebx,1 ;file handle: stdout RBOg;EJ
mov eax,4 ;sys_write iV2v<ap.n
int 80h ;kernel system call !\Vc#dslt
(utk)
mov ebx,0 ;return value 0 n}2D7
mov eax,1 ;sys_exit ,y}@I"
int 80h ;kernel system call ^ZPynduR
#bCQEhCy
d`9ofw~3=
x86 CPU,Windows,MASM32 z,xGjSP
.386 yB2}[1
.model flat,stdcall
WiiAIv&
option casemap:none IC6r?
;Include 文件定义 u1;sH{YK>
include windows.inc mr2fNA>kR
include user32.inc dwJnPJ=z
includelib user32.lib qN\?cW'
include kernel32.inc /^hc8X
includelib kernel32.lib I_\?w SNGM
;数据段 ;:obg/;uJ
.data .oH)eD
szCaption db 'A MessageBox!',0 s((c@)M
szText db 'Hello,world!',0 i62GZeE
;代码段 G3dA`3
.code q1pB~eg5
start: A9Icn>3?`(
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK t$z 5m<8
invoke ExitProcess,NULL zS*vKyye>
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> TpcJ1*t
end start ~@mNR^W-W
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AWK }'`}| pM$
BEGIN { print "Hello, world!" } 3/V0w|ZgD
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BASIC T~8kKw
传统版BASIC(例如GWBASIC): 9m%2&fjK^
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10 PRINT "Hello, world!" 4^T_" W}
20 END P,@/ap7J
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或在提示符输入: )F+wk"`+6
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?"Hello, world!":END S$ n?
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现代版BASIC(例如Quick BASIC): \+j:d9?
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Print "Hello, world!" .iYp9?t
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以下的语句在Quick BASIC中同样有效: EV@yJ]
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? "Hello,world!" ipyc(u6Z5
-ImVXy]?
YI>9C 76L
BCPL f4Ob4ah!(
GET "LIBHDR" ,\T7{=ZG\!
A1n4R
LET START () BE Q^*4FH!W
$( Irui{%T
WRITES ("Hello, world!*N") %bS1$
v\n
$) t;V^OGflv
L7[f-cK2:
gx8i|]
Befunge Tvt(nWn(H1
"!dlrow olleH">v P9W?sPnC5
, t;`ULp~&
^_@ /ke[nr
mt~E&Z(A
E24j(>
Brainfuck .bUj
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< YJ|U|[
+++++++++++++++.>.+++.------.--------.>+.>. 3&6sQ-}*
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C @z^7*#vQv
#include <stdio.h> ~G1B}c]
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int main(void) |K" nSXzk
{ i*r ag0Mw
printf("Hello, world!\n"); Z*Rgik
return 0; k"|Fu
} wI;sZJc
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C++ -A@/cS%p
#include <iostream> l6zYiM
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int main()
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{ \OXQ%J2v
std::cout << "Hello, world!" << std::endl; eD8e0
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return 0; gVrfZ&XF84
} |w+
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C++/CLI )2Bb,p<Wr
int main() H>o \C
{ %|j8#09
System::Console::WriteLine("Hello, world!"); O`5h jq#
} \AIFIy
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C# (C Sharp) Km,%p@`m
class HelloWorldApp o/ 7[
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{ {$#88Qa\-
public static void Main() IJVzF1vC
{ ym+Ezb#o
System.Console.WriteLine("Hello, world!"); j#xGB]
} "dT"6,
} 10)RLh|+
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1 e]D=2y
COBOL Z;,G:@,
IDENTIFICATION DIVISION. hxMV?\MYj
PROGRAM-ID. HELLO-WORLD. |>OBpb
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ENVIRONMENT DIVISION. t fD7!N{
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DATA DIVISION. UB+7]S
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PROCEDURE DIVISION. OL%}C*Zq
DISPLAY "Hello, world!". 4H NaE{O4
STOP RUN. B]vR=F}*
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ns*:mGh
Common Lisp #SG.`J<%
(format t "Hello world!~%") dS\!tdHP-Q
-2(?O`tZ
IMBjI#\
DOS批处理 R1/c@HQw?
@echo off =XK}eQ_d
echo "Hello, world!" |KY-kRN7
,FXc_BCx4
!zvOCAb,
Eiffel K|l}+:k
class HELLO_WORLD *[m:4\
_]- 4UA-
creation I9Uj3cL\
make G&@dJ &B
feature QBG jH^kL
make is I ~^Xw7
local !XM<`H/
io:BASIC_IO uE<8L(*B
do ^B%c3U$o
!!io g"k4Z
io.put_string("%N Hello, world!") 3fA+{Y8S
end -- make g cB
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end -- class HELLO_WORLD ^b|I^TN0
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Erlang K&RIF]0#G
-module(hello). 4HR36=E6
-export([hello_world/0]). ' Ttsscv
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hello_world() -> io:fwrite("Hello, World!\n"). *8uS,s6g
1X7GM65#
tC(Ma I
Forth : p)R,('g
." Hello, world!" CR ij!],
;obOr~Jx'5
ck%YEMs
Fortran Vo+.s#wN`h
WRITE(*,10) 9_nbMs
10 FORMAT('Hello, World!') {Z7ixc523
STOP $(+xhn(O
END dJ/gc"7aO
1KbZ6Msy
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HTML MBU|<tc
<HTML> ;']u}Nh
<HEAD> w-2#CX8jY
<TITLE> Hello World! </TITLE> PTLlLa85<
</HEAD> Z^z{,
u;!
<BODY> 2~l7WW+lx,
<p>Hello World!</p> I>JE\## ^n
</BODY> rsLkH&aM
</HTML> PH%'^YAl7
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c;Tp_e@
HQ9+ x,]x>Up
H p5tb=Zg_
K;WQV,
ok0ZI>=,
INTERCAL J*MH`;-
PLEASE DO ,1 <- #13 a/J Mg
DO ,1 SUB #1 <- #238 HfgTc
h
DO ,1 SUB #2 <- #112 &VA^LS@b
DO ,1 SUB #3 <- #112 71Za!3+
DO ,1 SUB #4 <- #0 AIY 1sSK
DO ,1 SUB #5 <- #64 c*.
DO ,1 SUB #6 <- #238 LTo5v
DO ,1 SUB #7 <- #26 gzn:]Y^
DO ,1 SUB #8 <- #248 n|6G\99l+M
DO ,1 SUB #9 <- #168 J(@" 7RX
DO ,1 SUB #10 <- #24 8Iu6r}k?~`
DO ,1 SUB #11 <- #16 qg=`=]j
DO ,1 SUB #12 <- #158 mXyN{`q=
DO ,1 SUB #13 <- #52 U;4i&=.!
PLEASE READ OUT ,1 fM7B<eB
PLEASE GIVE UP sve} ent
h@\-]zN{
ZOcpF1y
Java m_CWVw
public class Hello ?bt;i>O\
{ YY :{/0?
public static void main(String[] args) yn$1nt4
{ +_$s9`@]6
System.out.println("Hello, world!"); xw_klHL-o
} pe0ax-Zv
} ]Idwy|eG
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]'[:QGr
JSP R]e&JoY
<% Z37Dv;&ZD
out.print("Hello, world!"); dor1(@no|
%> |LZ{kD|
iu(obmh/o
,Yx<"2 W
MIXAL #b;k+<n[X
TERM EQU 19 the MIX console device number /<n7iIK)
ORIG 1000 start address
[?|yQ x
START OUT MSG(TERM) output data at address MSG E:B"!Y6
HLT halt execution n44 T4q
MSG ALF "MIXAL" !j`<iPI7B
ALF " HELL" >
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ALF "O WOR" v]EZYEXFL)
ALF "LD " 9aLd!PuTN
END START end of the program T9&{s-3*
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ga/zt-&
Nuva Zv!XNc!"$y
<..直接输出..> ;`LG WT-<F
Hello, world! du$M
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<..或者..> +aL
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<. &'&)E((
// 不带换行 }xt^}:D
? "Hello, world!" ?!U.o1
s|A[HQUtJ
// 或者 e+-#/i*
6q8}8;STTY
// 带换行 W)bSLD
?? 'Hello, world!' f3G:J<cL
.> BKtb@o~(
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<!FcQVH+L
OCaml ]s0wJD=
let main () = ZCj1Cz]"l<
print_endline "Hello world!";; SyI~iW#Y1
Qt{){uE
mY/"rm
Pascal Q"~%T@e
program Hello; 8Cp@k=
begin Z\`SDC
writeln('Hello, world!'); O2ktqAWx@
end. >I5Wf/$
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J/K~8sc
Perl Q"u2<
#!/usr/local/bin/perl &.DRAD)
print "Hello, world!\n"; 7r'_p$
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VFZ?<m
PHP ,M?8s2?
<?php 9%|skTgIqH
print("Hello, world!"); ^
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?> LH_H
yP_
(>A#|N1U
4GF3.?3
Pike ,)*[Xa_n
#!/usr/local/bin/pike )uOtQ0
int main() #GlFm?/6K/
{ i&lW&]
write("Hello, world!\n"); 68h1Wjg:"!
return 0; 4hxP`!<
} S-o)d
P HOngn
q x1Js3%
PL/I j>;1jzr2}
Test: procedure options(main); .rO~a.kG
declare My_String char(20) varying initialize('Hello, world!'); 2bTS,N/>
put skip list(My_String); qOy(dG g
end Test; N[3Y~HX!q
yH-&o,
DoFe:+_U3
Prolog Z]Udx
goal x3FB`3y~s
write("hello,world!"). r2+ZxMo|
WvT H+
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Python Ewr2popK
#!/usr/local/bin/python kI!@J6
print "Hello, world!" T^#d;A
*5oQZ".vA*
nlhv
REXX WO9vOS>
say "Hello, world!" @OT$* Qh
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@d~]3T
Ruby :Ob^b3<t
#!/usr/bin/ruby =>c0NT
print "Hello, world!\n" zLe(#8G
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