“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。 NsP=l]
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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》。 ]% HxzJ
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以下是用不同语言写成的Hello World程序的几个例子: 8.n#@%
Ada
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with Ada.Text_Io; use Ada.Text_Io; _:=\h5}8
procedure Hello is vI0,6fOd6
begin `Wg"m~l$N
Put_Line ("Hello, world!"); _,)_(R ,h
end Hello; E+qLj|IU
GDSXBa*7
+pwTM]bV
汇编语言 "nCK%w=
5WJ ~%"O
x86 CPU,DOS,TASM ndzADVP
MODEL SMALL a1y<Y`SC9
IDEAL 'ia-h7QWS
STACK 100H {?0'(D7.
%UrNPk
DATASEG I`X!M!dB)
HW DB 'Hello, world!$' [`b,SX
x
gac31,gH
CODESEG +]A,fmI.
MOV AX, @data rzIWQFv
MOV DS, AX @Kz,TP!%A
MOV DX, OFFSET HW ">CRFee0
MOV AH, 09H eyJWFJh
INT 21H W&)f#/M8
MOV AX, 4C00H jVd`J
INT 21H "Gp Tmu?
END w01[oU$x=
Tp?IK_
`gx\m=xG
x86 CPU,GNU/Linux,NASM $q:l \
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). *3`R W<Z
;Enter this into "hello.asm" then type: H'zAMGZa
;"nasm -f elf hello.asm" 'g)f5n a[
;"ld hello.o -o hello" :?\29j#*V
;"./hello" iYgVSVNg
l`zhKj
section .data ;data section declaration d{JI]
!
msg db 'Hello World!',0AH <<u]WsW{C
len equ $-msg ;string length (m:Q'4Ep
) hs&?:)
section .text ;code section declaration \tYImh
global _start ;entry point (start of execution) jq% <Z,rh
_start: mov edx,len ;string length H\oxj,+N
mov ecx,msg ;string start ]jxyaE&%4
mov ebx,1 ;file handle: stdout jH9PD8D\
mov eax,4 ;sys_write @I?,!3`jS
int 80h ;kernel system call '1LN)Yw
wg%Z
mov ebx,0 ;return value ^UJIDg7zS
mov eax,1 ;sys_exit =o~+R\1ux+
int 80h ;kernel system call yO7y`;Q(sF
DdI%TU K,
W9Azp8)p]
x86 CPU,Windows,MASM32 lf>d{zd5
.386 81x/bx@L%
.model flat,stdcall >^Wpc
option casemap:none >W] Wc4\
;Include 文件定义 F\xIVY
include windows.inc S1Y,5,}
include user32.inc H 4ELIF#@
includelib user32.lib jyW={%&
include kernel32.inc pJ}U'*Z2
includelib kernel32.lib l+F29_o#
;数据段 lwX9:[Z
.data !9PAfi?
szCaption db 'A MessageBox!',0 .8^mA1fmX
szText db 'Hello,world!',0 z0/+P
;代码段 Z40k>t
D
.code nc:/GxP
start: g 4=1['wW
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK t;VMtIW+E
invoke ExitProcess,NULL c=\ _[G(
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> wi7Br&bGi
end start #~-Xt!I
f|B\Y/*X
e8> X5
AWK {AD-p!6G
BEGIN { print "Hello, world!" } i*N2@Z[
Lm=EN%*#9
]^>Inh!
BASIC W`9{RZ'
传统版BASIC(例如GWBASIC): vw!7f|Pg ~
"KK}}$>
10 PRINT "Hello, world!" ,H"}Rw
20 END 1q!k#Cliu
1$03:ve1
或在提示符输入: 5*Zz_ .
^2$b8]q
?"Hello, world!":END YU-wE';H6
TxK
v!-1
现代版BASIC(例如Quick BASIC): ~3j+hN8<
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Print "Hello, world!" 5l8F.LtO\
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以下的语句在Quick BASIC中同样有效: /c=8$y\%@
>oJabR
? "Hello,world!" cQ- #]
A'jL+dI.
Q"
h]p
BCPL seK;TQ3/7
GET "LIBHDR" 8Gy]nD
2EpQ(G
J
LET START () BE vzI>:Bf
$( i=n;rT
WRITES ("Hello, world!*N") liPrxuP`
$) A]0R?N9wb_
n^;-&
jbS@6 *_
Befunge h/\Zq
"!dlrow olleH">v OXM=@B<"
, S;Sy.Lp
^_@ lH_pG ~
K\Q4u4DjbJ
%1k"K~eu
Brainfuck -FZNk}
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 1VFCK&
+++++++++++++++.>.+++.------.--------.>+.>. #]c_2V
F-:AT$Ok
`$1A;wg<
C TxQsi"0c
#include <stdio.h> { /!ryOA65
d1g7:s9$0
int main(void) (G+)v[f
{ :^?-bppYW
printf("Hello, world!\n"); ,/p+#|>C=
return 0; Ou4hAm91s
} ,ov$`v
OjffN'a+N
.R`_"7
C++ dRzeHuF92
#include <iostream> SbUac<
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int main() 63\
CE_p
{ j-J/yhWO&
std::cout << "Hello, world!" << std::endl; [g"nu0sOK
return 0; NKFeND
} )
4t%?wT
#s\yO~F-
u8?$W%eW
C++/CLI g ;
-3
int main() Jb> X$|N'%
{ Xbx=h^S
System::Console::WriteLine("Hello, world!"); mvpcRe
<
} Fg
p|gw4
t3.;qDy
\25EI]
C# (C Sharp) :&&s*_
class HelloWorldApp 5,4" CF$
{ J(]b1e
public static void Main() v\9f 8|K
{ `Zmdlp@
System.Console.WriteLine("Hello, world!"); eW<NDI&b
} )xU+M{p-os
} 6X'0 T}
<6.`(isph
_8PNMbv{
COBOL 'tMD=MH
IDENTIFICATION DIVISION. !}x-o`a5
PROGRAM-ID. HELLO-WORLD. mBye)q$
//r)dN^
ENVIRONMENT DIVISION. s."N7F
b~<V}tJ
DATA DIVISION. zI^:{]p
UT{`'#iT
PROCEDURE DIVISION. Dby|l#X
DISPLAY "Hello, world!". dlZ2iDQ%
STOP RUN. dhP")@3K;p
'?I3&lYz{
Lf<urIF
Common Lisp s4f{ziLp
(format t "Hello world!~%") "tJ[M
mIrN~)C4\
FnOahLS
DOS批处理 #d<"Ub
@echo off 1\lZ&KX$i
echo "Hello, world!" <ir]bQT
By[M|4a
5(1c?biP&
Eiffel :>ca).cjac
class HELLO_WORLD b O}&i3.L;
+,7vbs3
creation _I,GH{lh I
make l%0-W
feature c*<BU6y
make is "ig)7X+Wz|
local ~A%+oa*2~
io:BASIC_IO ?c"iV
do M|@@
LJ'
!!io ]NW_oRH
io.put_string("%N Hello, world!") Hv'
OO@z
end -- make +S#Xm4
end -- class HELLO_WORLD XCxxm3t
/`#JM
{ktwX\z
Erlang SuI^8^f=
-module(hello). rN .8-
-export([hello_world/0]). -#4QY70H t
3
Sf':N`u
hello_world() -> io:fwrite("Hello, World!\n"). ;U a48pSv
?Ec{%N%
GKUjtPu
Forth k
MV1$
." Hello, world!" CR rOYYZ)Qw
hZo f
7#Fcn
Fortran e=#D1
WRITE(*,10) lc [)Ev
10 FORMAT('Hello, World!') p,(W?.ZDN?
STOP c*R\fQd
END Ed-3-vJej6
g#1Y4
I;?PDhDb
HTML Ms3GvPsgv
<HTML> s6}SdmE
<HEAD> 211T}a
<TITLE> Hello World! </TITLE> {5ehm
</HEAD> B=r+
m;(
<BODY> |{,c2Ck:N
<p>Hello World!</p> Dequ'
</BODY> uB6Mjdp6
</HTML> ?djH!
I^n,v )
8
tblduiN
HQ9+ #
eFdu
H f\RTO63|O
EKQ>hww8
)@tHS-Jf
INTERCAL -~_|ZnuM9
PLEASE DO ,1 <- #13 y>T>
DO ,1 SUB #1 <- #238 IQd~`
G
DO ,1 SUB #2 <- #112 Tgla_sMb
DO ,1 SUB #3 <- #112 MU '-
DO ,1 SUB #4 <- #0 ,@M<O!%Cs
DO ,1 SUB #5 <- #64 QWt3KW8)
DO ,1 SUB #6 <- #238 Azr|cKu]
DO ,1 SUB #7 <- #26 d}|z+D
DO ,1 SUB #8 <- #248 T>hm\ !
DO ,1 SUB #9 <- #168 XW2ZQMos1
DO ,1 SUB #10 <- #24 Bk5 ELf8pL
DO ,1 SUB #11 <- #16 W|sU[dxZ
DO ,1 SUB #12 <- #158 >xF&>SDC
DO ,1 SUB #13 <- #52 1BP/,d |+
PLEASE READ OUT ,1 sS4V(:3s
PLEASE GIVE UP t-}IKrbv
z7P~SM
nC?Lz1re
Java VT~%);.#
public class Hello dd
+lQJ c
{ k#/cdK!K
public static void main(String[] args) #2Vq"Zn
{ p)m5|GH24
System.out.println("Hello, world!"); >b:5&s\9
} *c$UIg
} ,S`FxJcE
xBf->o S?
U1rr=h
g
JSP Qs#;sy
W@~
<% n`jG[{3t&
out.print("Hello, world!"); 6T_Ya)
%> cc1M9kVi
0$=U\[og
]HXHz(?;F
MIXAL sK/ymEfRv
TERM EQU 19 the MIX console device number FGm!|iI
ORIG 1000 start address UV{})T*s
START OUT MSG(TERM) output data at address MSG )
jM-5}"
HLT halt execution 6iHY{WcDj
MSG ALF "MIXAL" -Oz! GX
ALF " HELL" Cy5iEI#
ALF "O WOR" {utnbtmu
ALF "LD " WyM2h
END START end of the program ZnuRy:
'*@=SM
#i*PwgC%_
Nuva \O,yWyU4
<..直接输出..> T#I}w\XlhP
Hello, world! 4 +p1`
^q%f~m,O<
<..或者..> nYvkeT
4v{Ye,2
<. _)YB*z5
// 不带换行 U 17=/E
? "Hello, world!" Dk2Zl
~,8#\]xR
// 或者 q @wX=
kK:Wr&X0H
// 带换行 &t