“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。 sBm)D=Kll
> zA*W<g
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》。 ?&Ug"$v
s_o{w"3X
以下是用不同语言写成的Hello World程序的几个例子: z;iNfs0i$
Ada V$0mcwH
with Ada.Text_Io; use Ada.Text_Io; l$Y*ii
procedure Hello is pT|l "q@
begin [eLMb)n
Put_Line ("Hello, world!"); x/NjdK
end Hello; x4bmV@b
]}4JT
H Q :Y:
汇编语言 4g+Dp&U
=aB c.PJ^
x86 CPU,DOS,TASM "o)jB~:L
MODEL SMALL cY]BtJ#
IDEAL Q%r KKOX8
STACK 100H };Pdn7;1G:
ij5|P4Eka
DATASEG `:.a5
HW DB 'Hello, world!$' t#d{hEr
8Wba Hw_
CODESEG Uz=OTM
MOV AX, @data \r1nMw 3&
MOV DS, AX LIE5of
MOV DX, OFFSET HW d0V*[{
MOV AH, 09H w~4T.l#1
INT 21H I9Lt>*
MOV AX, 4C00H [,L>5:T
INT 21H Z\r?>2
END O\F$~YQ
i"#pk"@`
Yz)+UF,
x86 CPU,GNU/Linux,NASM 4OeH}@ a
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). v`hn9O
;Enter this into "hello.asm" then type: muAgsH$/
;"nasm -f elf hello.asm" =O%'qUj`q
;"ld hello.o -o hello" =&Z#QD"vl
;"./hello" H
S)$|m_
+wp !hk&C5
section .data ;data section declaration 1z3>nou2{
msg db 'Hello World!',0AH fG zx;<0P!
len equ $-msg ;string length "^Vnnb:Z*o
&6e A.
section .text ;code section declaration .;F%k,!v
global _start ;entry point (start of execution) m$bYx~K
_start: mov edx,len ;string length \NTVg6>qN
mov ecx,msg ;string start X2T_}{
mov ebx,1 ;file handle: stdout i&KBMx
mov eax,4 ;sys_write } `Cc-X7
int 80h ;kernel system call <!=:{&d%
GC`/\~TM
mov ebx,0 ;return value v,|jmv+:
mov eax,1 ;sys_exit [}I|tb>Pg
int 80h ;kernel system call 9zl-C*9vj
MbxJ3"@
$px1D$F !
x86 CPU,Windows,MASM32 (QTQxZ
.386 1}R\L"
.model flat,stdcall 3aw-fuuIb
option casemap:none 9^7z"*@#
;Include 文件定义 4k!>JQor
include windows.inc |?v .5|1
include user32.inc &D91bT+L
includelib user32.lib y[ZVi5) ,
include kernel32.inc ,zEPdhTX
includelib kernel32.lib T_[5 ZYy
;数据段 [Lcy &+
.data
VIaj])m
szCaption db 'A MessageBox!',0 ASB3|uy _
szText db 'Hello,world!',0 lS|F&I5j
;代码段 {A~3/M%74;
.code (%'`t(<
start: P~84#5R1
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK z))rk vL%
invoke ExitProcess,NULL N)/7j7c~;
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> tzY?LX[3
end start @1~cPt
XVF!l>nE
5Y 7 %Z
AWK m2HO .ljc
BEGIN { print "Hello, world!" } OaKr_m
tkQrxa|
!yvw5As %
BASIC W/VEB3P>Z
传统版BASIC(例如GWBASIC): `# :(F z
nub!*)q
10 PRINT "Hello, world!" JQ|*XU
20 END ^fV-m&F)K*
\E6 0
或在提示符输入: {]%7-4E
-Un"z6*
?"Hello, world!":END uqVarRi$
CDY3+!
现代版BASIC(例如Quick BASIC): "pO**z$Z
cT@H49#uB
Print "Hello, world!" K#Xl)h}y7
Bjh8uW
G
以下的语句在Quick BASIC中同样有效: +i[@+`
v|dt[>G
? "Hello,world!" b'I@TLE')
3lbGG42:
<E:_9#Z0sc
BCPL 7X8*7'.2
GET "LIBHDR" #7"";"{z|
J\FLIw4
LET START () BE oBs5xH7@-
$( G^Y^)pc]
WRITES ("Hello, world!*N") )LsUO#%DO
$) *to#ZMR;!
V+zn`
\a
]z]=?;ty%
Befunge b81cq,
"!dlrow olleH">v %_G '#Bn<
, 8K@e8p( y
^_@ Md0`/F:+2
3[@:I^q
2Sk hBb=d
Brainfuck |"[;0)dw^
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< VtMnLFMw
+++++++++++++++.>.+++.------.--------.>+.>. $
nMx#~>a
: rudo[L
8bf@<VTO_
C E&Zt<pRf;2
#include <stdio.h> fl40jo]
8@){\.M
int main(void) a
p( PI?]X
{
'*EKi
printf("Hello, world!\n"); [x-
9m\h
return 0; k8i0`VY5Y
} ;2[OI
TW
wE3{iF
n'?]_z<
C++ \tA@A
#include <iostream> ~fs}
J
#ApmJLeCO
int main() cEn|Q
{ CtUAbR
std::cout << "Hello, world!" << std::endl; flz7{W
return 0; |,({$TrF
} LoOw]@>
z@~mu
99%R/m
C++/CLI 2IP<6l8N
int main() =$ T[
{ TH55@1W,[
System::Console::WriteLine("Hello, world!"); ~@e=+Z
} I,aaSBwt&2
uL:NWgN
e;LC\*dG
C# (C Sharp) gQ|?~hYYv
class HelloWorldApp "`mG_qHI[
{ "D:?l`\o
public static void Main() fhha-J
{ YS<KyTb"
System.Console.WriteLine("Hello, world!"); }9 N-2]
} W"\+jHF"
} of >
=L;g:hc<
7mn&w$MS4:
COBOL sQ&<cBs2
IDENTIFICATION DIVISION. {DE4PE`
PROGRAM-ID. HELLO-WORLD. |oQhtk8.
m 0Uu2Z4
ENVIRONMENT DIVISION. p^Z|$aZZ
[.$/o}
DATA DIVISION. p9!jM\(
')iyD5/4
PROCEDURE DIVISION. %|ioNXMu
DISPLAY "Hello, world!". +i}uRO
STOP RUN. MlLM
$Y-@
,Ww.W'#P
bIzBY+P
Common Lisp p _2Y c]8
(format t "Hello world!~%") i?V:+0#q\]
|O' gT8
.3SP#mI
DOS批处理 )EcfEym.>
@echo off dZddoz_
echo "Hello, world!" feM(
07\]8^/G
bn=7$Ax
Eiffel f:AfM f>m
class HELLO_WORLD X|4Kdi.r@
B->oTC`5
creation ]<9o>#3
make kLXa1^Lq
feature J:I As:e`
make is BFqM6_/J
local 61sEeM
io:BASIC_IO /N")uuv
do @HY P_hR
!!io kkOjAp{<t
io.put_string("%N Hello, world!") ;g?o~ev 8
end -- make x4`|[
end -- class HELLO_WORLD <d[GGkY]=
$ dKo}
gEmsPk,
Erlang gRw? <U^
-module(hello). #wGOlW;R
-export([hello_world/0]). [t*-s1cq
@# .a5
hello_world() -> io:fwrite("Hello, World!\n"). roIc1Ax:
a,:Nlr3
Sg(\+j=
Forth _+Uf5,.5yU
." Hello, world!" CR {>Qs+]
COxJ,v(
6rlM\k@!
Fortran b86c[2
WRITE(*,10) ;Wn0-`_1,
10 FORMAT('Hello, World!') y+7A?"s)
STOP >QBDxm
END Zlv`yC*r
yoTx3U@
)X6I#q8
HTML E<
pO!P
<HTML> *N](Xtbj
<HEAD> T+:GYab/
<TITLE> Hello World! </TITLE> Lp+?5DjLT
</HEAD> oP:OurX8V
<BODY> J$(79gH{
<p>Hello World!</p> yQFZRDV~
</BODY> 461p 4)
</HTML> ?zYR;r2'b)
1V]j8
9 vNz
yh\
HQ9+ o<g1;
H WaiM\h?=#
ciN*gwI)
ko~e*31_E
INTERCAL JNI&]3[C>?
PLEASE DO ,1 <- #13 xfqU
atC
DO ,1 SUB #1 <- #238 zB6&),[,v
DO ,1 SUB #2 <- #112 9"dZ4{\!
DO ,1 SUB #3 <- #112 //#]CsFiP
DO ,1 SUB #4 <- #0 !!])~+4pP
DO ,1 SUB #5 <- #64 d81[hT}q
DO ,1 SUB #6 <- #238 h|EHK!<"8
DO ,1 SUB #7 <- #26 C1-Jj_XQ.
DO ,1 SUB #8 <- #248 nd h\+7
DO ,1 SUB #9 <- #168 pQ`S%]k.<
DO ,1 SUB #10 <- #24 't475?bY
DO ,1 SUB #11 <- #16 :|=Xh"l"
DO ,1 SUB #12 <- #158 CSr2\ogT
DO ,1 SUB #13 <- #52 y*lAmO
PLEASE READ OUT ,1 9hhYyqGsO
PLEASE GIVE UP py\/m]
wNl "y
qITd.<
k
Java (>-(~7PR
public class Hello W"s)s
{ Gx(%AB~9$
public static void main(String[] args) ahw0}S
{ ?'OL2~
System.out.println("Hello, world!"); ro^T L
} a*o k*r
} 3e|,Z'4}4
{InW%qSn_
@Z@S;RWSU
JSP #/WjKr n
<% /$UWTq/C7
out.print("Hello, world!"); l^v,X%{Iz
%> lH>6;sE
9YwS"~Q =w
=jvN8R*[
MIXAL ^;cJjl'=
TERM EQU 19 the MIX console device number 2VkA!o4nP
ORIG 1000 start address K$-|7tJon
START OUT MSG(TERM) output data at address MSG 22D,,nC0+=
HLT halt execution .U,>Qn4/
MSG ALF "MIXAL" eie u|_
ALF " HELL" 3\5I4#S
ALF "O WOR" }ct*<zj[~u
ALF "LD " XKbTjR
END START end of the program S@C"tHD
<##aD3)
w6[$vib'
Nuva o q cu<