“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。 G`n_YH084
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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》。 ePr&!Tz#
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以下是用不同语言写成的Hello World程序的几个例子: Of"
Ada ^5H >pat
with Ada.Text_Io; use Ada.Text_Io; "Q!(52_@J
procedure Hello is W+PJZn
begin N>XS=2tzN
Put_Line ("Hello, world!"); mS^tX i5hg
end Hello; Kla'lCZ
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汇编语言 i.3=!6z
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x86 CPU,DOS,TASM 8n'B6hi
MODEL SMALL ~\Hc,5G
IDEAL 'eLqlu|T
STACK 100H F
P* lQRA
H@q?v+2
DATASEG AS
=?@2 q
HW DB 'Hello, world!$' g/P+ZXJ
RloK,bg
CODESEG 0`X]o'RxS
MOV AX, @data ~8GF Q ph
MOV DS, AX 4)A#2
MOV DX, OFFSET HW gDQ1?N'8{t
MOV AH, 09H ,.kha8v
INT 21H +y&Tf#.V/A
MOV AX, 4C00H 8=NM|i
INT 21H BW 4%l
END VU&7P/\f%
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x86 CPU,GNU/Linux,NASM 2/"u5
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). @GdbTd
;Enter this into "hello.asm" then type: m 8aITd8
;"nasm -f elf hello.asm" P} 0%-JC
;"ld hello.o -o hello" 2E}*v5b,
;"./hello" ;[M}MFc/`
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section .data ;data section declaration v7iuL6jl
msg db 'Hello World!',0AH n:yTeZ=-s4
len equ $-msg ;string length 23Nw!6S
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section .text ;code section declaration P:k>aHnW
global _start ;entry point (start of execution) 5hQE4/hH
_start: mov edx,len ;string length xI($Uu}S
mov ecx,msg ;string start Cjc6d4~
mov ebx,1 ;file handle: stdout auK?](U
mov eax,4 ;sys_write L?WFmn
int 80h ;kernel system call 19E8'@
{L/ tst#C
mov ebx,0 ;return value <vONmE a
mov eax,1 ;sys_exit +@p%
p
int 80h ;kernel system call ;" dV"W
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x86 CPU,Windows,MASM32 \s=t|Wpu2
.386 4KIRHnaj
.model flat,stdcall OY;*zk
option casemap:none Yu)NO\3&
;Include 文件定义 <}<zgOT[1!
include windows.inc BJM.iXU)[
include user32.inc '8!YD?n
includelib user32.lib F'4w;-ax
include kernel32.inc WvBc#s-
includelib kernel32.lib x4;"!Kq\
;数据段 A OISs4
.data 5ni~Q 9b
szCaption db 'A MessageBox!',0 DW5Y@;[
szText db 'Hello,world!',0 y9q8i(E0
;代码段 iOU6V
.code j|U#)v/
start: r'^Hg/Jzt
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK \;qW 3~
invoke ExitProcess,NULL *>|gxM8
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> gtk7)Uh
end start ^p[rc@+
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BEGIN { print "Hello, world!" } mRL"nC
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BASIC w80oXXs[#
传统版BASIC(例如GWBASIC): piPR=B+
3Dng1}
10 PRINT "Hello, world!" +S>j0m<*
20 END `UD/}j@
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或在提示符输入: j(m.$:
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?"Hello, world!":END c3jx+Q
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现代版BASIC(例如Quick BASIC): pT=JP> nd^
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Print "Hello, world!" n^Hm;BiE#
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以下的语句在Quick BASIC中同样有效: tSr8 zAV
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? "Hello,world!" U'H$`$Ov
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BCPL 4Jp:x"w
GET "LIBHDR" IwQ"eUnK
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LET START () BE _K]_
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$( )
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WRITES ("Hello, world!*N") .nrMfl_
$) wH>a~C:
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Befunge E{XH?_xo
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, @:+8?qcP
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smlpD3?va
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Brainfuck '~5LY!H(pT
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< &5\iM^
+++++++++++++++.>.+++.------.--------.>+.>. ) pzy
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C kjIAep0rT
#include <stdio.h> nCUg,;_=
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int main(void) GZEc l'h*
{
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printf("Hello, world!\n"); 2GP=&K/A
return 0; ). <-X^@
} F^WP <0C
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C++ $Ipg&`S"
#include <iostream> yQU{zY
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int main() Zq^At+8+
{ t>L;kRujVJ
std::cout << "Hello, world!" << std::endl; vmU@^2JSJ
return 0; =m!-m\B/
} ?qP7Y nl
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C++/CLI O8+7g+J=!
int main() +NeOSQSj
{ q3mJ782p]
System::Console::WriteLine("Hello, world!"); tRs [ YK
} SzAJ2:qhl
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C# (C Sharp) ?iw!OoZ`
class HelloWorldApp #H)vK"hF
{ qz+dmef
public static void Main() ]_Vx{oT7
{ n&L+wqJ
System.Console.WriteLine("Hello, world!"); ~FZ&.<s
} Sxnpq Vbk
} 2V"B:X\
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Z
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COBOL Cl5uS%g
IDENTIFICATION DIVISION. o15-ZzE-
PROGRAM-ID. HELLO-WORLD. ot,jp|N>f~
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ENVIRONMENT DIVISION. %D UH@j
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DATA DIVISION. ({
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{}>0e:51
PROCEDURE DIVISION. X@'uy<tI-
DISPLAY "Hello, world!". q2/pNV#
STOP RUN. Y#]+Tm(+
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Common Lisp /1Qr#OJ(]
(format t "Hello world!~%") yd^{tQi
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&D>G8
DOS批处理 ",p;Sd
@echo off hP=WFD&
echo "Hello, world!" h(<,fg1
i#&z2h-b
x5|I
Eiffel #Z}Rfk(~
class HELLO_WORLD ,QOG!T4
6}Vf\j~
creation wc0jhHZO
?
make z
F_M*8=
feature QEm|])V
make is QgrpBG
local @d^Grm8E
io:BASIC_IO Vmc5IPd{\
do heltgRt
!!io CWf /H)~
io.put_string("%N Hello, world!") efSM`!%j
end -- make o=u3&liBi
end -- class HELLO_WORLD z(o,m3@v
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Erlang "HX<,l8f%
-module(hello). HvUxsdT
-export([hello_world/0]). &w 4?)#
g-qP;vy@"q
hello_world() -> io:fwrite("Hello, World!\n"). _G_Cj{w
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-Q2, "
Forth ?J'Y&
." Hello, world!" CR f'8kish
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Fortran 2`.cK 3
WRITE(*,10) ?xK8#
10 FORMAT('Hello, World!') b>_o xK
STOP z+x\(/
END "X2 Vrn'
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HTML rMXN[,|v
<HTML> xrlmKSPa
<HEAD> 2*rH?dz8E
<TITLE> Hello World! </TITLE> +nUy,S?43
</HEAD> 6\L0mcXR!
<BODY> F8hw#!Aq
<p>Hello World!</p> 0WT{,/>
</BODY> Yj%U
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</HTML> r$5i Wu
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HQ9+ gHhh>FFAq
H a5 *2h{i
$m7?3/YG
`J]fcE%T0R
INTERCAL ?MXejEC
PLEASE DO ,1 <- #13 >Wh}f3C
DO ,1 SUB #1 <- #238 H&F9J^rC
DO ,1 SUB #2 <- #112 DQMHOd7g
DO ,1 SUB #3 <- #112 l6(-I
Tb
DO ,1 SUB #4 <- #0 & +4gSr
DO ,1 SUB #5 <- #64 Pa(^}n|
DO ,1 SUB #6 <- #238 HfcL%b%G8
DO ,1 SUB #7 <- #26 ~i@Y|38C
DO ,1 SUB #8 <- #248 X_qf"|i
DO ,1 SUB #9 <- #168 A3vUPWdDk
DO ,1 SUB #10 <- #24 ~jK{ ,$:=
DO ,1 SUB #11 <- #16 Mmj;'iYOwF
DO ,1 SUB #12 <- #158 wpN k+;
DO ,1 SUB #13 <- #52 +${D
PLEASE READ OUT ,1 }>)@WL:q
PLEASE GIVE UP <$6QDfa#
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n$U#:aQE
Java :q
ti
public class Hello ub7zA!%
{ A;5n:Sd
public static void main(String[] args) :1 (p.q=
{ 7~&/_3
System.out.println("Hello, world!"); <F'X<Bau
} D,;\o7V
} I96Ci2)m
V~S0hqW[
,QC{3i~
JSP ;=geHiQHA
<% Vm5c+;
out.print("Hello, world!"); /R~1Zj2&
%> ak->ML
*\(r+>*x*
W ZazJ=27}
MIXAL "8~:[G#
TERM EQU 19 the MIX console device number :[\v
ORIG 1000 start address 8i|w(5m;
START OUT MSG(TERM) output data at address MSG 4
SHU
HLT halt execution Y7#-Fra0W
MSG ALF "MIXAL" a^Tmu
ALF " HELL" CqHK %M
ALF "O WOR" !_+8A/
ALF "LD " ebS0qo[oLH
END START end of the program ixW@7m
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Nuva c~{9a_G
<..直接输出..> y_*PQZ$c<
Hello, world! +j(d| L\
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<..或者..> e%4:)
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<. {o!KhF:[
// 不带换行 )uK{uYQl
? "Hello, world!" \Y|~2Ls8tu
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// 或者 K TsgJ\W
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// 带换行 eh4gQ^l
?? 'Hello, world!' '" X_B0k
.> XYS'.6k(
%q!8={J8
#6AFdNy
OCaml ~XyW&@
let main () = PqyA1
print_endline "Hello world!";;
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Xcrk;!IB?
1"pI^Ddt
Pascal %V1Z~HC
program Hello; a-"k/P#
begin $we]91(::
writeln('Hello, world!'); 4q'B<7{Q
end. "S&@F/
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.s<*'B7&
Perl Q\GDrdA
#!/usr/local/bin/perl 2u"7T_"2D
print "Hello, world!\n"; Y 2Q=rj
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@WQK>-=(3
PHP ,bM-I2BR
<?php ) c/%
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print("Hello, world!"); i.xXb[M+
?>
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BnCKSg7V
Fi.aC;sx
Pike RrhT'':[
#!/usr/local/bin/pike V~T@6S
int main() 9prU+9
{ YXU|h
write("Hello, world!\n"); q;fKcblKj
return 0; zP:cE
} '=E3[0W
^pS+/ZSi^
#Ei,(xiP
PL/I jYVE8Y)my
Test: procedure options(main); K.%U
declare My_String char(20) varying initialize('Hello, world!'); -UZ@G~K
put skip list(My_String); d'*]ns
end Test; [k[u*5hP|F
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:^'O}2NP
Prolog SVa6V}"Iv
goal 'q>2t}KG
write("hello,world!"). &3v&i*DG,I
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Python li]
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#!/usr/local/bin/python vBvNu<v7te
print "Hello, world!" Vvt ;
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