“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。 S7f"\[Aw
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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》。 r>Cv@4/j
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以下是用不同语言写成的Hello World程序的几个例子: {RHa1wc
Ada 35Cm>X
with Ada.Text_Io; use Ada.Text_Io; m`6=6(_p
procedure Hello is 3"p'WZ>
begin ]=?.LMjnH
Put_Line ("Hello, world!"); ^Q5advxuq
end Hello; 8 GW0w
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汇编语言 z\+Ug9Of
(;cvLop
x86 CPU,DOS,TASM ">x"BP
MODEL SMALL QM4O|x[
IDEAL 8;5@5Au
STACK 100H /nz J`d
EN;4EC7tE
DATASEG f=T&$tZ<
HW DB 'Hello, world!$' %%qg<iO_
:[!b";pR
CODESEG )kvrQ6
MOV AX, @data
( =t41-l
MOV DS, AX /f]'_t0\.
MOV DX, OFFSET HW ?eOw8Rom
MOV AH, 09H 3%YDsd vQx
INT 21H CC|=$(PgT
MOV AX, 4C00H Y?xc#'
INT 21H IyoitIbLl
END +r$ M 9
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x86 CPU,GNU/Linux,NASM .F/0:)
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 21 N!?DR
;Enter this into "hello.asm" then type: rL|9Xru
;"nasm -f elf hello.asm" $<F9;Z
;"ld hello.o -o hello" Dgm"1+
;"./hello" ~vB dq Yj
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section .data ;data section declaration O~D]C
msg db 'Hello World!',0AH k]~|!`
len equ $-msg ;string length Q&8epO |J
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section .text ;code section declaration xew s~74L
global _start ;entry point (start of execution) jq(QL%)_O
_start: mov edx,len ;string length F~wqt7*
mov ecx,msg ;string start 'DTq<`~?
mov ebx,1 ;file handle: stdout {)Pg N
mov eax,4 ;sys_write DTz)qHd#X
int 80h ;kernel system call |SuN3B4e
1-}M5]Y
mov ebx,0 ;return value M s Q=1
mov eax,1 ;sys_exit BjV;/<bt
int 80h ;kernel system call uQiW{Kja2
yQE9S+%M
YSux#*#H
x86 CPU,Windows,MASM32 !XQ)>T^G5
.386 l^R1XBP
.model flat,stdcall |6 E
!wW
option casemap:none N7-LgP
;Include 文件定义 S#N4!"
include windows.inc `2,F!kCt
include user32.inc ,L-G-V+
includelib user32.lib GU7f27p
include kernel32.inc
495A\8#
includelib kernel32.lib b_']S0$c\
;数据段 2-beq<I
.data |[X-i["y
szCaption db 'A MessageBox!',0 vQmqYyOc2
szText db 'Hello,world!',0 {~EPP
.
;代码段 iyP0;$
.code /A93mY[
start: V11XI<V
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK !#dp[,nk
invoke ExitProcess,NULL LTcZdQd$
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> "=!sZO?3
end start U:uFrb,
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BEGIN { print "Hello, world!" } s=hao4v7z
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BASIC I}u&iV`
传统版BASIC(例如GWBASIC): /ommM
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10 PRINT "Hello, world!" eDY)i9"W
20 END m.Ki4NUm
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或在提示符输入: d0;<Cw~Tl
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?"Hello, world!":END <jG[
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现代版BASIC(例如Quick BASIC): G{gc]7\=Cd
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Print "Hello, world!" i0rh{Ko
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以下的语句在Quick BASIC中同样有效: \WxBtpbQB
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? "Hello,world!" id[caP=`
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Suy +XHV
BCPL f0
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GET "LIBHDR" ^u> fW["[
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LET START () BE V#X<Yt
$( xB5QM #w\
WRITES ("Hello, world!*N") H7}f[4S%
$) RaOLy \
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Befunge <YvW /x
"!dlrow olleH">v BbhC0q"J
, p#6tKY;N
^_@ f([d/
w%- S5#
Mb-AzGsV
Brainfuck c^stfFE&
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< N1hj[G[H"
+++++++++++++++.>.+++.------.--------.>+.>. 7G%:ckg
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C " -S@R=bi
#include <stdio.h> >65\
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int main(void) 10^FfwRfM
{ *d9RD~Ee
printf("Hello, world!\n"); Z29aRi
return 0; #fb&51
} ]I\9S{?
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C++ k:URP`w[X=
#include <iostream> (*9-Fa
3~?m?vj|Y
int main() n?"("Fiw
{ *t_Q5&3L+U
std::cout << "Hello, world!" << std::endl; tGF3Hw^mS
return 0; tac\Ki?
} 6G{ Q@
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C++/CLI FM7`q7d
int main() }=|plz}
{ Ey%KbvNv
System::Console::WriteLine("Hello, world!"); ]KQQdr
} Re*_Dt=r
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C# (C Sharp) CZf38$6 X
class HelloWorldApp 6FY.kN\
{ lIPz"
public static void Main() ^U##9KkP
{ LCW}1H:Q
System.Console.WriteLine("Hello, world!"); Pbt7T
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} Hwcm t!y
} XSGBC:U)l
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COBOL V[n,fEPBr
IDENTIFICATION DIVISION. ja6V*CWb
PROGRAM-ID. HELLO-WORLD. %M:$ML6b<
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ENVIRONMENT DIVISION. sG\K$GP!
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DATA DIVISION. x"r,l/gzy
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PROCEDURE DIVISION. !j}L-1*{ l
DISPLAY "Hello, world!". 4W}mPeEeV
STOP RUN. |
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Common Lisp mtdy@=?1Y
(format t "Hello world!~%") ?!O4ia3nFk
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DOS批处理 '8[;
m_S
@echo off Tgh?=]H
echo "Hello, world!" wB&5q!{!
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Eiffel BWNI|pq)v
class HELLO_WORLD SM8_C!h:
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creation pw`'q(ad
make UmY{2 nzY
feature Ks<+@.DLTu
make is k SgE_W)
local *eX/ZCn
io:BASIC_IO Y[H769
do SlwQ_F"4L
!!io +(y8q
io.put_string("%N Hello, world!") hRMya#%-
end -- make (4Nj3x
o
end -- class HELLO_WORLD IUNr<w<
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Erlang .rS.
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-module(hello). r=~K#:66
-export([hello_world/0]). bwj{5-FU
(.X)=
hello_world() -> io:fwrite("Hello, World!\n"). 1b86@f
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Forth klH?!r&
." Hello, world!" CR K?r
k/sfak{Q
j=Izwt>
Fortran +k~0&lZi
WRITE(*,10) %M))Ak4~a
10 FORMAT('Hello, World!') T]nAz<l),
STOP >239SyC-,
END boHbiE
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HTML x/wgD'?
<HTML> Z4rk$K'=1w
<HEAD> dfKGO$}V
<TITLE> Hello World! </TITLE> Ow.DBL)x'>
</HEAD> 1z-A3a/-
<BODY> 5+;Mc[V3-
<p>Hello World!</p> IvlfX`("
</BODY> |:.Uw\z5'
</HTML> 5[4nFa}R:5
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VBw5[
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e([>sAx!1
([}08OW@
INTERCAL 9[;da
PLEASE DO ,1 <- #13 zBu@a:E%H
DO ,1 SUB #1 <- #238 9t6c*|60#n
DO ,1 SUB #2 <- #112 9x|`XAB
DO ,1 SUB #3 <- #112 C#^y{q
DO ,1 SUB #4 <- #0 m C`*#[
DO ,1 SUB #5 <- #64 Y;%LwDC
DO ,1 SUB #6 <- #238 )Jdku}Pf
DO ,1 SUB #7 <- #26 \$*CXjh3G
DO ,1 SUB #8 <- #248 t$wbwP
DO ,1 SUB #9 <- #168 r-TrA$k
DO ,1 SUB #10 <- #24 _U-`/r o
DO ,1 SUB #11 <- #16 9}m?E<6&
DO ,1 SUB #12 <- #158 E}v8Q~A(
DO ,1 SUB #13 <- #52 }Z FoCMM
PLEASE READ OUT ,1 X^K^az&L
PLEASE GIVE UP /t`\b
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Java &)gc{(4$
public class Hello =y _KL
{ *OznZIn
public static void main(String[] args) BAY e:0
{ 0 !{X8>x
System.out.println("Hello, world!"); 8V 4e\q
} xPPA8~Dm*
} Y0T :%
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cv-rEHT
JSP Nw$OJ9$L>
<% Qrg- xu=
out.print("Hello, world!"); M\a{2f7'n
%> iw3\`,5
=CJ`0yDQ>
@j_o CDS
MIXAL h7^&:
TERM EQU 19 the MIX console device number P.C?/7$7Z+
ORIG 1000 start address |Z{#DOT
START OUT MSG(TERM) output data at address MSG ?d^6ynzn
HLT halt execution \X _}\_c,d
MSG ALF "MIXAL" _uLpU4# ?
ALF " HELL" BDvkY
ALF "O WOR" ,]7ouH$H}
ALF "LD " <%Nf"p{K
END START end of the program t(6]j#5
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