“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。 |W[BqQIf
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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》。 "u@)
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以下是用不同语言写成的Hello World程序的几个例子: wz}BH
Ada xxL D8?@e7
with Ada.Text_Io; use Ada.Text_Io; FFQ=<(Ki
procedure Hello is xPl+
rsU
begin =$`EB
Put_Line ("Hello, world!"); :<=A1>&8
end Hello; xlg 6cO
k z"F4?,
s,!+wHv_8
汇编语言 ?ey!wcv~
*G"L]Nq#
x86 CPU,DOS,TASM +]
s"* 'V$
MODEL SMALL hN=YC\l
IDEAL QVA)&k'T,
STACK 100H eo.y,U h
38ChS.(
DATASEG %9cu(yc*}
HW DB 'Hello, world!$' 8q58H[/c
Oc8]A=M12
CODESEG r+r-[z D(
MOV AX, @data kmXpj3
MOV DS, AX EZlcpCS
MOV DX, OFFSET HW G}<%%U D
MOV AH, 09H jq#uBU%
INT 21H i"V2=jTeBv
MOV AX, 4C00H @F%H 1
INT 21H !B cd\] q
END w
4-E@>%
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2Z!%Q}Do
x86 CPU,GNU/Linux,NASM ,1J+3ugp&
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). vN'Y);$
;Enter this into "hello.asm" then type: MBXja#(k
;"nasm -f elf hello.asm" g?'pb*PR
;"ld hello.o -o hello" )`<-
c2
;"./hello"
;j|T#-.
_1TSt%L
section .data ;data section declaration O4H %x
msg db 'Hello World!',0AH k<x
%
len equ $-msg ;string length -L<''2t
NZ`Mq
section .text ;code section declaration XMzL\Edo
global _start ;entry point (start of execution) Z\Qa6f!
_start: mov edx,len ;string length ky*-THS
mov ecx,msg ;string start sz4)xJgF(
mov ebx,1 ;file handle: stdout Ry2rQM`
mov eax,4 ;sys_write }A)>sQ
int 80h ;kernel system call =iF}41a
;[9WB<t
mov ebx,0 ;return value l8rBp87Q
mov eax,1 ;sys_exit IWbW=0IsS
int 80h ;kernel system call |a/1mUxQ&
ug47JW
0].*eM
x86 CPU,Windows,MASM32 lt%bGjk
.386 QhV!%}7
.model flat,stdcall zfAHE{c
option casemap:none =I.
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;Include 文件定义 yf5X=f.%@
include windows.inc )Nv$ SH
include user32.inc f~nAJ+m=
includelib user32.lib q):Ph&'r
include kernel32.inc H]>b<Cs
includelib kernel32.lib z@5t7e)!R
;数据段 (9R;a np
.data 0=]RG
szCaption db 'A MessageBox!',0 U6SgV
8
szText db 'Hello,world!',0 gQHE2$i>
;代码段 MHZ!noAr
.code an! ceB
start: mNUc g{+/
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK (5AgI7I,
invoke ExitProcess,NULL aI @&x
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> TXx%\V_6
end start cu&tdg^q
k\,01Y^
;;4xpg
AWK +o&&5&HR
BEGIN { print "Hello, world!" } %*d(1?\o
M`{x*qR
p%Zx<=f-_
BASIC I[b@U<\
传统版BASIC(例如GWBASIC): TK"!z(p
k8]=5C?k
10 PRINT "Hello, world!" f{_K%0*
20 END T^'NC8v
#N"zTW%
或在提示符输入: ]u~6fknm
6uWzv~!*D
?"Hello, world!":END -8F~Tffx
Ga
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现代版BASIC(例如Quick BASIC): /y2upu*!
sA6Ku(9
Print "Hello, world!" \g|u|Y.2[
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以下的语句在Quick BASIC中同样有效: jTjGbC]X
TM_ MJp
? "Hello,world!" ("HT0a
9H~{2Un
N[G<&f9
BCPL 8p3pw=p
GET "LIBHDR" 8!e1T,:b
=l&A9 >\
LET START () BE tF> ?]
$( W/Rb7q4v
WRITES ("Hello, world!*N") 6.fahg?E
$) bY6y)l
5~WMb6/
Q{9#Am^6w
Befunge S].=gR0:
"!dlrow olleH">v H}KJd5A7
, !wl3}]q
^_@ (bP\_F5D
e%#8]$
Q<]~>cd^
Brainfuck DkO>?n:-C
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< @WuB&uF=d
+++++++++++++++.>.+++.------.--------.>+.>. CfFNk "0{
G[V?#7.
\qPgQsy4
C S&BJR!FQ
#include <stdio.h> ]@@3]
7.O1
~-
int main(void) UnjUA!v
{ ti`R
printf("Hello, world!\n"); (^h47kY
return 0; B@wQ[
} 0q_Ol]<V
zw=as9z1-
muSQFIvt
C++ 9H I9([Cs
#include <iostream> wA`A+Z2*?
Dim,HPx]d
int main() BS }uv3
{ <L+D
std::cout << "Hello, world!" << std::endl; x
Hw$
return 0; #vN\]e
} )9@I7QG?
oh{!u!L`]
w}Q|*!?_
C++/CLI &HKrmFgX{
int main() F*WWv&\X
{ qcxq-HS2'
System::Console::WriteLine("Hello, world!"); #+Lo&%p#3
} h#bpog
A/NwM1z[o)
"yMr\jt~-
C# (C Sharp) 6"Tr$E
class HelloWorldApp 64s9Dy@%F
{ Xg#g`m%(M
public static void Main() ~mUP!f
{ |L{<=NNs:D
System.Console.WriteLine("Hello, world!"); GXaCH))TO
} htg+V-,
} LyA=(h6
l'N>9~f
'{EBK
COBOL tYt/m6h
IDENTIFICATION DIVISION. qIQvix$8
PROGRAM-ID. HELLO-WORLD. _\ n'uW$
|N[SCk>Kj
ENVIRONMENT DIVISION. 1 sCF
-r
h+$1+Es
DATA DIVISION. tq9t(0EL
[|~X~AO%
PROCEDURE DIVISION. Py 8o8* H
DISPLAY "Hello, world!". n
}lav
STOP RUN. vO" $Xw
{m}B=u
ih1s`CjG
Common Lisp 2vKnxK+ 5
(format t "Hello world!~%") FE1dr_i
kl[bDb1p
%>cc%(POO
DOS批处理 Uc
e#v)
@echo off `xbk)oW#
echo "Hello, world!" EAFKf*K=
w&;\}IS
Ov%9S/d
Eiffel /B!"\0G/,
class HELLO_WORLD De|@}@
PpN+q:(
creation WT(R =bLw
make ox {Cm
feature O*oL(dk*8L
make is
3 Yl[J;i
local 9!V<=0b/
io:BASIC_IO ]\P
do ?"AcK"v
!!io a(Z" }m
io.put_string("%N Hello, world!") K@*m6)
end -- make 'rf='Y
end -- class HELLO_WORLD
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> ^3xBI:Q
cZL"e
Erlang ik~hL/JD\
-module(hello). B7t#H?
-export([hello_world/0]). 7 pg8kq@
Uy ;oJY
hello_world() -> io:fwrite("Hello, World!\n"). I}Q3B3Byg
Fg4eIE-/M
wr*A%:
Forth >C_! }~
." Hello, world!" CR (m3p28Q?
[sz#*IJ
: M0LAN
Fortran .(;k]UP
WRITE(*,10) {b/60xl?
10 FORMAT('Hello, World!') $if(`8
STOP )'%L#
END a|?CC/Ra
. 36'=K
OY~5o&Oa
HTML ?vf{v
<HTML> 7Yj\*N
<HEAD> UDyvTfh1X
<TITLE> Hello World! </TITLE> /[nt=#+
</HEAD> J+?xfg
<BODY> :'GTCo$3
<p>Hello World!</p> Kr]!BI?z
</BODY>
=sG(l
</HTML> 3 ;.{
O%bX
Jc9SHCJ
? dSrY
HQ9+ v-G(bw3
H X+iA"B
f$V']dOj1q
{br4B7b
INTERCAL =]W{u`
PLEASE DO ,1 <- #13 5bmtUIj
DO ,1 SUB #1 <- #238 @ n;WVG
DO ,1 SUB #2 <- #112 u#=N8
DO ,1 SUB #3 <- #112 IRo[|&c
DO ,1 SUB #4 <- #0 0]>p|m9K^<
DO ,1 SUB #5 <- #64 `p1`Sxz?
DO ,1 SUB #6 <- #238 J+DuQ;k;
DO ,1 SUB #7 <- #26 LZ&CGV"Z-
DO ,1 SUB #8 <- #248 b'9G`Y s^
DO ,1 SUB #9 <- #168 G=Ka{J
DO ,1 SUB #10 <- #24 D zDt:.JZ
DO ,1 SUB #11 <- #16 y
L&n)
DO ,1 SUB #12 <- #158 [zf9UUc~
DO ,1 SUB #13 <- #52 f.+e
PLEASE READ OUT ,1 l`$f@'k
PLEASE GIVE UP {!oO>t
Y]8l]l 1
9zO;sg;3
Java kV6>O C&^
public class Hello {AIZ,
{ Mm.!$uR
public static void main(String[] args) HTx7._b
{ 5Y9 j/wA
System.out.println("Hello, world!"); nsgNIE{>gO
}
k7y!!AV
} s?%1/&.~
YVW!u6W'[6
T/S-}|fhQ
JSP PI0/=kS
<% fvNGGn!
out.print("Hello, world!"); -QS_bQG%
%> y'pG'"U]_
3Q`'C7Pi
>Ckb9A
MIXAL )_bXKYUX*0
TERM EQU 19 the MIX console device number >!WJ{M0
ORIG 1000 start address uF(-h~
START OUT MSG(TERM) output data at address MSG %8{' XJ!
HLT halt execution yY_]YeeR
MSG ALF "MIXAL" /h2`?~k+
ALF " HELL" `hH1rw@7<
ALF "O WOR" ~=c^Oo:
ALF "LD " 9pjk3a
END START end of the program R~Xl(O
/Zv }u
GB[W'QGiq
Nuva U}Hmzb
<..直接输出..> c yN_Sg
Hello, world! 5jjJQ'
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a#w;
<..或者..> Vl9\&EL
PVtQ&m$y
<. &a