“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。 (OqJet2{+
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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》。 y2R=%EFh6
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以下是用不同语言写成的Hello World程序的几个例子: >D/~|`=p
Ada BB.TrQM.#
with Ada.Text_Io; use Ada.Text_Io; !_
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procedure Hello is 17cW8\
begin r(i)9RI+(
Put_Line ("Hello, world!"); WQpJd7
end Hello; =.E(p)fz
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3~</lAm;
汇编语言 :
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x86 CPU,DOS,TASM d&bc>Vt
MODEL SMALL } qv-lO
IDEAL LtztjAm.
STACK 100H r$FM8$cJ
%-/:ps
DATASEG j dhml%pAd
HW DB 'Hello, world!$' #L.}CzAz
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CODESEG K=x1mM+RK
MOV AX, @data T(UYlLe
MOV DS, AX 3c ^=<i
%
MOV DX, OFFSET HW R6Mxdm2P}
MOV AH, 09H )ek 5
INT 21H Kw0V4UF
MOV AX, 4C00H )75yv<L2S,
INT 21H **r?
END eBTedSM?t
sLa)~To
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x86 CPU,GNU/Linux,NASM 7Y|>xx=v
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). aE+$&_>ef
;Enter this into "hello.asm" then type: [RFK-E
;"nasm -f elf hello.asm" 1+tt'
;"ld hello.o -o hello" gpK_0?%
;"./hello" 3ZL7N$N}7
a/<pf\O
section .data ;data section declaration z!C4>,
msg db 'Hello World!',0AH gVA}?t;
len equ $-msg ;string length hf^`at
a]Da`$T
section .text ;code section declaration 2<o[@w
global _start ;entry point (start of execution) Ya&\ly
/i
_start: mov edx,len ;string length # 1dTM-
mov ecx,msg ;string start ,cy/fW
mov ebx,1 ;file handle: stdout .cT$h?+jyl
mov eax,4 ;sys_write sJI-
int 80h ;kernel system call xDA,?i;T
0
{iIg 4PzrU
mov ebx,0 ;return value aRO_,n9
mov eax,1 ;sys_exit g1 Wtu*K3
int 80h ;kernel system call `-K)K<
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m wEVEx24
x86 CPU,Windows,MASM32 &>zy_)
.386 9 CK\tx&
.model flat,stdcall X:SzkkVl7
option casemap:none O{ %A&Ui
;Include 文件定义 {uwk[f{z
include windows.inc +ersP@G
include user32.inc H&yFSz}6a
includelib user32.lib =O3I[
include kernel32.inc A.$VM#
includelib kernel32.lib AYPf)K;%
;数据段 'tV"^KQHI
.data z@%/r~?|
szCaption db 'A MessageBox!',0 ^=izqh5S
szText db 'Hello,world!',0 [Z5}2gB&
;代码段 DA4edFAuE
.code Xs%R]KOwt
start: =Qj+Ug'
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK Yn$>QS 4
invoke ExitProcess,NULL Mdlt zy=)L
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> lN)Y
end start VO @
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AWK 3D$\y~HU
BEGIN { print "Hello, world!" } Z}LOy^TL
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BASIC gf3u0' $
传统版BASIC(例如GWBASIC): G&%nF4
y?Hj%,
10 PRINT "Hello, world!" j:v~MrQ7|
20 END BYr_Lz|T
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或在提示符输入: +B`'P9Zk@
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?"Hello, world!":END MAwC\7n+X
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现代版BASIC(例如Quick BASIC): M!&_qj&N,
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Print "Hello, world!" y(/jTS/hd
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以下的语句在Quick BASIC中同样有效: $,; ;u:-
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? "Hello,world!" Lo|NE[b:G
,<0Rf
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BCPL HO%E-5b9
GET "LIBHDR" G|QUujl
pW*{Mx
LET START () BE ]^yV`Z8
$( >G-8FL
WRITES ("Hello, world!*N") A6?qIy
$) 8X}^~ e
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P[Y{LKAbb
Befunge PtVo7zOye
"!dlrow olleH">v F:[7^GQZ{
, 5 `4}A%@&
^_@ 9]]!8_0=r
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PtQQZ"ept
Brainfuck .DgoOo%?"
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 8Zcol$XS'
+++++++++++++++.>.+++.------.--------.>+.>. _-4n~(
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c[(yU#@
C *A~($ZtL
#include <stdio.h> MxM](ew~7
8yHq7=
int main(void) TqENaC#&
{ 33=Mm/<m$P
printf("Hello, world!\n"); e+NWmu{<_
return 0; 6@"Vqm|HD
} +IwdMJ8&8
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C++ >}ro[x`K
#include <iostream> r/UYC"K3
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int main() 6?53q e
{ +:Lk^Ny
std::cout << "Hello, world!" << std::endl; y<O@rD8iA
return 0; AyE%0KmraK
} v57N^DR{
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C++/CLI v*&Uk'4E
int main() Lf5%M|o.)
{ aXRv}WO$>k
System::Console::WriteLine("Hello, world!"); %l Q[dXp
} I)[`ZVAXR
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C# (C Sharp) 9OPK4-
class HelloWorldApp &J\B\`
{ IeO-O'^&`
public static void Main() 6a7vlo
{
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System.Console.WriteLine("Hello, world!"); pI
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} -<8B,
} ||R0U@F,
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COBOL 5i|s>pD4z1
IDENTIFICATION DIVISION. DNmb[
PROGRAM-ID. HELLO-WORLD. a@Mq J=<L
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ENVIRONMENT DIVISION. ^SEc./$
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DATA DIVISION. v}Z9+ yRC2
pQqbZ3]
PROCEDURE DIVISION. BlL|s=dlQV
DISPLAY "Hello, world!". Ah*wQow
STOP RUN. j+$M?Z^
%Nl`~Kz9U
~
W@X-
Common Lisp ooY\t +
(format t "Hello world!~%") J`W-]3S#
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`n6/ A)
DOS批处理 [$^A@bqk
@echo off |P>|D+I0
echo "Hello, world!" .xEJaID\N
Vz'HM$
h!v/s=8c
Eiffel V>B'+b+<
class HELLO_WORLD cI3 y
Vd21,~^>g
creation <>]1Y$^Y
make te)n{K",
feature
aV<^IxE;
make is %Z7%jma
local *o!l/>4g
io:BASIC_IO <~N%W#z/
do Q{[@`bZB
!!io 7u::5 W-q
io.put_string("%N Hello, world!") F;pQ \Y
end -- make Q70bEHLA
end -- class HELLO_WORLD Ge^Qar
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Fom>'g*
Erlang q4k.f_{
-module(hello). PS$k >_=t
-export([hello_world/0]). 3 "Yif
5/ * >v
hello_world() -> io:fwrite("Hello, World!\n"). h8jB=e, H
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\DS^i`o)rY
Forth nVXg,Jl
." Hello, world!" CR uH\w.
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GD&htob(
Fortran LWD#a~
WRITE(*,10) U<[jT=L
10 FORMAT('Hello, World!') {p]=++
STOP s/t11;
END ybE[B}pOeZ
@\jQoaLT$_
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HTML 4mJFvDZV`
<HTML> oRq3 pO}f
<HEAD> . :a<2sp6
<TITLE> Hello World! </TITLE> n=o_1M|
</HEAD> a+Ab]m8`
<BODY> 4,~tl~FD
<p>Hello World!</p> %i"}x/CD[
</BODY> CT p!di|
</HTML> #\ #3r
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H \$pkk6Q3,w
V!&P(YO:
LT_iS^&1
INTERCAL 8r^ ~0nm
PLEASE DO ,1 <- #13 h1f8ktF
DO ,1 SUB #1 <- #238 p/*"4-S
DO ,1 SUB #2 <- #112 Js{=i>D
DO ,1 SUB #3 <- #112 9/kXc4
DO ,1 SUB #4 <- #0 EB,4PEe:
DO ,1 SUB #5 <- #64 &{z<kmc$6
DO ,1 SUB #6 <- #238 <
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DO ,1 SUB #7 <- #26 |=5/Rax^
DO ,1 SUB #8 <- #248 l r~gG3
DO ,1 SUB #9 <- #168 <kbyZXV@K
DO ,1 SUB #10 <- #24 /S~m)$vu
DO ,1 SUB #11 <- #16 Fo}7hab
DO ,1 SUB #12 <- #158 u|fXP)>.
DO ,1 SUB #13 <- #52 o8ppMM8_R[
PLEASE READ OUT ,1 .:9s}%Zr
PLEASE GIVE UP 0m)&YFZ[(
Cq\I''~8
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Java ROdK8*jL
public class Hello 1@_T m
{ 33a uho
public static void main(String[] args) \ZH&LPAY
{ |B^G:7c
System.out.println("Hello, world!"); (
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} 4c159wsnQ
} s>%Pd7:
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= yXs?y"
JSP x0Z5zV9
<% #YK5WTn5
out.print("Hello, world!"); rU2iy"L
%> <Q5Le dN
lA;a
&`!^Zq vG
MIXAL M+xdHBg
TERM EQU 19 the MIX console device number jH*)%n5,\
ORIG 1000 start address A3{0q>CC
START OUT MSG(TERM) output data at address MSG jbte
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HLT halt execution EKZVF`L
MSG ALF "MIXAL" ..<3%fL3
ALF " HELL" 23ze/;6%A
ALF "O WOR" ,k0r
ALF "LD " )S@jDaU<