“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。 ]V]@Zna@g
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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》。 ]C:If h~
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以下是用不同语言写成的Hello World程序的几个例子: MH~qfH>K
Ada `?S?)0B
with Ada.Text_Io; use Ada.Text_Io; 5t1DB'K9$_
procedure Hello is 5<GRi"7A@
begin <?va)
ou
Put_Line ("Hello, world!"); L5N{ie_
end Hello; e^fKatI1
$A!h=]
v(nQd6;T
汇编语言 (R
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R"kE5:
x86 CPU,DOS,TASM Chi<)P$^
MODEL SMALL 1Qe!
IDEAL u2x=YUWb]
STACK 100H !{ )AV/\D
k^%ec3l
DATASEG ,8 NEnB
HW DB 'Hello, world!$' l$~bkVNL
7|eSvC
CODESEG aiX;D/t?
MOV AX, @data rls#gw
MOV DS, AX s\1_-D5]Z
MOV DX, OFFSET HW FoXQ]X7"
MOV AH, 09H *L8HC8IbH
INT 21H HkB<RsS$p_
MOV AX, 4C00H C-
Rie[
INT 21H YaZ"&i
END &-)Y[#\J
r0uXMr=Z96
f?I *`~k
x86 CPU,GNU/Linux,NASM .t%Vx
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ^{+:w:g
;Enter this into "hello.asm" then type: ~ai'
M#
;"nasm -f elf hello.asm" HaN_}UMP
;"ld hello.o -o hello" 4g^+y.,r_f
;"./hello" rxk{Li<9
\osQwGPV
section .data ;data section declaration S7>gNE;%]u
msg db 'Hello World!',0AH [k{iN1n
len equ $-msg ;string length Q>c6ouuJ
Y_YIJ@
section .text ;code section declaration <%JO3E
global _start ;entry point (start of execution) cQ ;Ry!$
_start: mov edx,len ;string length 8t
\>
mov ecx,msg ;string start A|OC?NZY
mov ebx,1 ;file handle: stdout b1^Yxe#L
mov eax,4 ;sys_write ^nZ2p$
int 80h ;kernel system call ~TR|Pv
{hP&P
mov ebx,0 ;return value U jzz`!mz
mov eax,1 ;sys_exit ]BBgU[O)
!
int 80h ;kernel system call q;~>h
+((31l
Yf`.Cq_:
x86 CPU,Windows,MASM32 D
;I;,Z
.386 __%E!*m"<_
.model flat,stdcall \k-juF80
option casemap:none iC2nHZ*,
;Include 文件定义 z(68^-V=:
include windows.inc
x`l;
;
include user32.inc {YTF]J$
includelib user32.lib kU>|E<c*
include kernel32.inc trt\PP:H%
includelib kernel32.lib V/%;:ul.
;数据段 ryLNMh
.data g'7hc~=
szCaption db 'A MessageBox!',0 u(`A?H:
szText db 'Hello,world!',0 O!Cu.9}
;代码段 (,y/nc=GN
.code
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start: ?^5*[H
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK shvcc
invoke ExitProcess,NULL *%BI*p
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ,w>?N\w!}
end start JLn<,Gn)<\
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*9wHH-#
AWK U {!{5l:
BEGIN { print "Hello, world!" } [&s:x,
; O0rt1
-RDs{c`y%N
BASIC @&yj7-]
传统版BASIC(例如GWBASIC): ebK
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agD.J)v\
10 PRINT "Hello, world!" MCG~{#`
20 END _oVA0@#n
umn^QZ,
或在提示符输入: shZ<j7gqI
l);8y5
?"Hello, world!":END Y\\nJuJo
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现代版BASIC(例如Quick BASIC): H2cc).8"
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Print "Hello, world!" 2MeavTr
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以下的语句在Quick BASIC中同样有效: =(\!,S'
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? "Hello,world!" :!hH`l}p
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!WnI`
BCPL ji=po;g=E
GET "LIBHDR" z59J=?|
~-i?=
LET START () BE *4y r7~S5
$( tpK4 gjf
WRITES ("Hello, world!*N") RL9BB.
$) !,"G/}'^;
axOy~%%c
ir#^5e@
Befunge vn0*KIrX
"!dlrow olleH">v z(eAwmuli
, e84TLU?~
^_@ DL_\luh
Ts6X:D4,
V1;-5L75
Brainfuck 2jC\yY |PN
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< WE]^w3n9
+++++++++++++++.>.+++.------.--------.>+.>. yG4MqR)J
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C l si8?91
#include <stdio.h> &0`7_g7G
&r%3)Z8Et
int main(void) UC@ "<$'C
{ pC8i&_A
printf("Hello, world!\n"); [NcOk,
return 0; Pme?`YO$x
} 9Z
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C++ $)V4Eu;
#include <iostream> -2_$zk*n
zPYa@0I
int main() ?2;G_P+
{ K e8cfd~c
std::cout << "Hello, world!" << std::endl; $n"Llw&)
return 0; L+L9)8FJ
} 06$9Uz9
P0=F9`3wb
{5JXg9um
C++/CLI C-Z,L#
int main() }1dh/Cc`
{ Tp13V.|
System::Console::WriteLine("Hello, world!"); LAeX e!y
} DBRJtU!5x
T-TH.
R
-C+vmY*@
C# (C Sharp) JhcS
class HelloWorldApp GZo4uwG@a
{ KK6YA
public static void Main() ?Dm&A$r
{ qfU3Cwy
System.Console.WriteLine("Hello, world!"); }d(6N&;"zN
} u@B"*V~K
} n21J7;\/+
YBP{4Rl
pxj"<q`nw8
COBOL e)kf;Hkf
IDENTIFICATION DIVISION. /slML~$t<
PROGRAM-ID. HELLO-WORLD. 9@06]EI_
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ENVIRONMENT DIVISION. ($kwlj~c
JSU\Hh!
DATA DIVISION. Y$^\D'.k
2 OTpGl
PROCEDURE DIVISION. <4g^c&
DISPLAY "Hello, world!". S SXSgp
STOP RUN. E_oe1C:
U?QO'H5
rL=$WxdPU
Common Lisp j*{bM{~T<
(format t "Hello world!~%") cx|j
_5%i
$/H'Dt6x
d9(F wmE
DOS批处理 (EX
@echo off w3@te\
echo "Hello, world!" x-<dJ}`
qJ@?[|2R
$H^6I8>
Eiffel sq_:U_tJ
class HELLO_WORLD pP @#|T
d\v _!7
creation r!S iR(
make 5h1j.t!
feature w9%gaK;
make is WxFjpJt
local 'SmdU1]4BD
io:BASIC_IO 5
Jhl4p}w
do /Q!F/HY3ZS
!!io PewLg<?,G4
io.put_string("%N Hello, world!") IjNm/${$
end -- make [H6>] &
end -- class HELLO_WORLD S,H{\c
/2:r}O
MD7[}cB
Erlang 1 .M?Hp9i
-module(hello). j*5VJ:
-export([hello_world/0]). e([&Nr8h
\ *2IU"R
hello_world() -> io:fwrite("Hello, World!\n"). fHigLL0B
\&H%k
0`W~2ai
Forth OjN]mp-q
." Hello, world!" CR !cZsIcIe
xn"g_2Hi
^tv*I~>J!
Fortran {x8`gP\H
WRITE(*,10) XP7A.I#q0
10 FORMAT('Hello, World!') 2B4c:jJ
STOP &eg,*K} '
END z+b~#f3
181P;R=}<
t`AD9
H"\!
HTML '|Oi#S
<HTML> GYYro&aq{
<HEAD> &l Q j?]
<TITLE> Hello World! </TITLE> L8W3Tpi&(
</HEAD> `G'V9Xs(
<BODY> P}5aN_v\
<p>Hello World!</p> *%O1d.,
</BODY> _5zR!|\^
</HTML> -K
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HQ9+ c:0$
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]HRZ9oP
/Hx\ gtV
INTERCAL 0^m02\Li
PLEASE DO ,1 <- #13 `9ieTt
DO ,1 SUB #1 <- #238 p})&Zl)V
DO ,1 SUB #2 <- #112 9qpH 8j+
DO ,1 SUB #3 <- #112 m[}$&i$(
DO ,1 SUB #4 <- #0 R9W(MLe58
DO ,1 SUB #5 <- #64 7@sWT<P
DO ,1 SUB #6 <- #238 <ESAoY"RPN
DO ,1 SUB #7 <- #26 4Mprc~ 7vr
DO ,1 SUB #8 <- #248 3!,%;Vz=
DO ,1 SUB #9 <- #168 {\V)bizY;
DO ,1 SUB #10 <- #24 DirWe
DO ,1 SUB #11 <- #16 9xWrz;tzo
DO ,1 SUB #12 <- #158 ,
?%`Ky/
DO ,1 SUB #13 <- #52 TX>;2S3q
PLEASE READ OUT ,1 B0Z@ Cf
PLEASE GIVE UP #U1soZ7
MwuH.# Ez
HV sIbQS
Java +LUL-d
public class Hello 6?_Uow}
{ DxYu
public static void main(String[] args) g9gyWz
{ b ,cvQD
System.out.println("Hello, world!"); L$b9|j7
} !O5UE
} .,c8cq?
;7hf'k
rdK.*oT
JSP PQfx0n,
<% v uJ~Lg{
out.print("Hello, world!"); }$7Hf+G
%> {*|yU"
mz#(\p=T
hE=cgO`QU
MIXAL lj[Bd >
TERM EQU 19 the MIX console device number +`[$w<I
ORIG 1000 start address #*9*[Xbi
START OUT MSG(TERM) output data at address MSG ^WeT3b q
HLT halt execution dWp4|r
MSG ALF "MIXAL" 9Dpmp|
ALF " HELL" I[&!\Me[+w
ALF "O WOR" t*DM^.@
ALF "LD " HsO=%bb
END START end of the program m:h]nm
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