“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。 (/oHj^>3N`
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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》。 @+,J^[ y
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以下是用不同语言写成的Hello World程序的几个例子: X`n)]~
Ada uq~Z
with Ada.Text_Io; use Ada.Text_Io; <EHgPlQn
procedure Hello is v_7?Zik8E
begin VPAi[<FzOG
Put_Line ("Hello, world!"); :MIJfr>z
end Hello; YaWZOuxm
J2ryYdo>
1F*3K3T {
汇编语言 vs`"BQYf
Bj-80d,
x86 CPU,DOS,TASM i 1{Lx)
MODEL SMALL v*&WxP^Gm
IDEAL L T.u<ThR}
STACK 100H :nYnTo`
:L E&p[^
DATASEG PU"C('AP
HW DB 'Hello, world!$' zFn!>Tqe
Tgf#I*(^]
CODESEG |v'_Co0ki
MOV AX, @data WFYbmfmV
MOV DS, AX D; @nrj`.
MOV DX, OFFSET HW O:'ENoQ:&
MOV AH, 09H D>Ub)i
INT 21H rQuozbBb
MOV AX, 4C00H 2%|0c\y|z=
INT 21H +kMVl_`V
END D<DSK~
jgz}
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x86 CPU,GNU/Linux,NASM \E!a=cL!
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). OrZ =-9"
;Enter this into "hello.asm" then type: ]WO0v`xh
;"nasm -f elf hello.asm" 7;wx,7CUq
;"ld hello.o -o hello" ;aY.CgX
;"./hello" FS(bEAk}
N>+s8L.?
section .data ;data section declaration vz[-8 m:f
msg db 'Hello World!',0AH U)PNY
len equ $-msg ;string length
[b=l'e/
vq.~8c1
section .text ;code section declaration qId-v =L
global _start ;entry point (start of execution) GW29Rj1
_start: mov edx,len ;string length iK(G t6w
mov ecx,msg ;string start /F(wb_!
mov ebx,1 ;file handle: stdout s%{8$>8V.
mov eax,4 ;sys_write n )n>|w_
int 80h ;kernel system call ib3u:
w6PKr^
mov ebx,0 ;return value |UGmIm%
mov eax,1 ;sys_exit \L-K}U>J
int 80h ;kernel system call z)Yk&;XC
w`N|e0G@
wa#$9p~Q
x86 CPU,Windows,MASM32 "M GX(SQ
.386 &8##)tS(y
.model flat,stdcall &gNb+z+
option casemap:none &EELq"5K
;Include 文件定义 "<#-#j
include windows.inc &V.\Svm8]
include user32.inc h6yXW!8
includelib user32.lib
*tWZ.I<<
include kernel32.inc 6 aE:vR2
includelib kernel32.lib HP$GI
;数据段 M;96Wm
.data Rr9K1io$)
szCaption db 'A MessageBox!',0 ]YO &_#
szText db 'Hello,world!',0 )@IDmz>
;代码段 ,C=Lu9
.code zKY 9'y
start: Y]u6f c
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK y4V~fg;
invoke ExitProcess,NULL >nqDUGnEo>
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> n]15 ~GO.
end start 3? R56$-+
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s>RtCw3,
AWK rx$B(z(c
BEGIN { print "Hello, world!" } bv NXA*0
-L.U4x
n^a&@?(+
BASIC ~36)3W[4
传统版BASIC(例如GWBASIC): 2"'<Yk9
csEF^T-
10 PRINT "Hello, world!" pX\Y:hCug
20 END 8zOoVO
~6<'cun@x
或在提示符输入: <hJ%]]
c2tf7fkH
?"Hello, world!":END SY[7<BUZ
2;v1YKY
现代版BASIC(例如Quick BASIC): I}Fv4wlZG
bh[`uRC}
Print "Hello, world!" fMRv:kNAt
<{z*6FM!'
以下的语句在Quick BASIC中同样有效: Oi?+Z:lak
hHu?%f*
? "Hello,world!" 1+{V^)V?
4@Q`8N.
&f;<[_QI=
BCPL c=^A3[AM
GET "LIBHDR" daX$=n
+s`HTf
LET START () BE vi4lmkyh^
$( J%:D%=9 )
WRITES ("Hello, world!*N") )Rlh[Y& r
$) u>K(m))5W3
&4dh $w]q
iB1+4wa
Befunge S5,y!K]C~
"!dlrow olleH">v (oUh:w.]Gw
, k;fy8
^_@ 8+?|4'\`
~vL`[JiK
>k)zd-
Brainfuck gdx2&~
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 2qN|<S&
+++++++++++++++.>.+++.------.--------.>+.>. -(Z%?]+
kf Xg\6uKc
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C Y\e8oIYu7
#include <stdio.h> HgY> M`U
Mq#sSBE<K
int main(void) ZDhl$m[m
{ x=7qC#+)
printf("Hello, world!\n"); *%(BE*C}
return 0; zG|#__=T
} M?nYplC
Mqk[+n
c:@lR/oe"
C++ pAm
L
#include <iostream> in[yrqFb7t
G(*7hs
int main() jkrv2 `"
{ .Z2zv*
std::cout << "Hello, world!" << std::endl; .Jvy0B} B
return 0; ,5
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} ~R$Ko(N
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RoY"Haa
C++/CLI +Y9n@`
int main() )d^b\On
{ br[n5
System::Console::WriteLine("Hello, world!"); 1k:s~m?!
} DH*=IzcJf
-IP 3I
(UGmbRf&
C# (C Sharp) EXz{Pqz
class HelloWorldApp JKMcdD?'
{ M6MtE_E
public static void Main() q]}1/JZS
{ aP}%&{iC*
System.Console.WriteLine("Hello, world!"); MB#KLTwnT
} ss4<s
5:y
} 'C")X
%(v<aEQtt
B+pJWl8u
COBOL ~|!f6=
IDENTIFICATION DIVISION. .%3qzOrN
PROGRAM-ID. HELLO-WORLD. ywl7bU-f
!J%m 7A
ENVIRONMENT DIVISION. oKlO cws}
#ozQF~
DATA DIVISION. Fu/{*4
D,)^l@UP
PROCEDURE DIVISION. OBBEsD/bc
DISPLAY "Hello, world!". #2U4}#Mi
STOP RUN. *]uj0@S
wRLj>nc
e|~s'{3
Common Lisp zr1,A#BV
(format t "Hello world!~%") d O' apey
J@4,@+X
8g!C'5
DOS批处理 xSal=a;k
@echo off SB<09|2
echo "Hello, world!" p#T^o]+
?\J.Tv$$$
c~=yD:$
Eiffel (9X>E+0E
class HELLO_WORLD ~H+W[r}
O:>9yZhV
creation zV<vwIUrr
make |!=KLJUA
feature ?{bAyh/
make is B<A=U r
local $ [NC$*N7
io:BASIC_IO TM1D|H
do "VfV;)]|w
!!io #ivN-WKCl
io.put_string("%N Hello, world!") HxXCxI3
end -- make iOO1\9{@
end -- class HELLO_WORLD 5csqu^/y
#!n"),3
s,2gd'
Erlang ,7{}}l
-module(hello). =yZiBJ
-export([hello_world/0]). ]rs7%$ZW
UJX=lh.o
hello_world() -> io:fwrite("Hello, World!\n"). YhzDi>hob
UFED*al#
t ;~H6
Forth ?[ts<Ltp
." Hello, world!" CR 5jYZ+OB
52L* :|b
pOz4>R
Fortran Gw;[maM!%`
WRITE(*,10) ;Npv 2yAab
10 FORMAT('Hello, World!') Q;3v ]h_
STOP f/&k$,w
END '[6o(~*
NSPa3NE
ezOZHY>|#
HTML 8O)!{gB
<HTML> LT5rLdn
<HEAD> fy(i<L
Z
<TITLE> Hello World! </TITLE> hSvA
dT]m
</HEAD> _c W(R,i
<BODY> #{t?[JUn
<p>Hello World!</p> M_4:~&N$
</BODY> ;goR0PN
</HTML> N!`8-ap\^
r:&"#F
MZ8jL,a^
HQ9+ l/JE}Eg(
H 8-wW?YTG
9J$8=UuxWG
2|1s !Q
INTERCAL SnhB$DG
PLEASE DO ,1 <- #13 g8_C|lVZi
DO ,1 SUB #1 <- #238 Eoj 2l&\
DO ,1 SUB #2 <- #112 7sQw&yUL)
DO ,1 SUB #3 <- #112 ;,8bb(j
DO ,1 SUB #4 <- #0 5nGDt~a
DO ,1 SUB #5 <- #64 P`^{dH$P
DO ,1 SUB #6 <- #238 Cyb-}l
DO ,1 SUB #7 <- #26 C(7Y5\"P
DO ,1 SUB #8 <- #248 9 pGND]tIi
DO ,1 SUB #9 <- #168 sh6F-g
DO ,1 SUB #10 <- #24 fDn| o"
DO ,1 SUB #11 <- #16 r/![ohrEB
DO ,1 SUB #12 <- #158 S[b)`Wi D
DO ,1 SUB #13 <- #52 #>|l"1
PLEASE READ OUT ,1 JYbE(&l%de
PLEASE GIVE UP ,=9e]pQ
aN.t) DG}J
da[u@eNrnX
Java Vs1j9P|G
public class Hello y=H^U.
{ $>3/6(bW
public static void main(String[] args) 5ml^3,x
{ J{gqm
System.out.println("Hello, world!"); ZwLD7j*)
} ?,JN?
} ICD(#m
>@yHa'*9S
wo>srZs
JSP s<I[)FQVr
<% 6
1=?(Iw
out.print("Hello, world!"); %"Y7 b2pPa
%> N#;k;Z'iL
>-Qg4%m
@)8QxI^3[
MIXAL B/i`
TERM EQU 19 the MIX console device number gc:qqJi)X
ORIG 1000 start address p%A(5DE
START OUT MSG(TERM) output data at address MSG .(Gq9m[~8H
HLT halt execution 5q`d=L,
MSG ALF "MIXAL" !A"`jc~x:
ALF " HELL" W^2Q"c#7F
ALF "O WOR" 3z[yKua\
ALF "LD " 1n! JfsU
END START end of the program t6;Ln().Hw
s D]W/
Jy'ge4]3
Nuva [_jTy;E
<..直接输出..> %d+:0.+`n
Hello, world! wSp1ChS k
td@F%*
<..或者..> 5|ih>? C/(
ui4H(A'}
<. DRD%pm(
// 不带换行 Dg]ua5jk
? "Hello, world!" Ox"4 y
W:uIG-y~
// 或者 oy!W$ ?6
Ga-AhP
// 带换行 qoBm!|q
?? 'Hello, world!' w$H=GF?"
.> br"p D-}
}XCHoB
o<e AZ
OCaml
Tx35~Z`0
let main () = .J3lo:
print_endline "Hello world!";; >9D=PnHnD
JBdZ]
ZoB?F
Pascal GEq?^z~i
program Hello; VrhG=CK
begin %@L(A1"#D
writeln('Hello, world!'); 7ZHM;_
-
end. ?Zu=UVb
~130"WQ;
CD(2A,u)/
Perl x+(h#+F
#!/usr/local/bin/perl /Cr0jWu
_
print "Hello, world!\n"; h\KQ{-Bl
8^ ;[c
>`8r 52
PHP 7|3Z+#|T
<?php : L`
print("Hello, world!"); o[^% 0uVF
?> 38Lc|w
lyKV^7}
zT0rvz1),M
Pike gNl@T
#!/usr/local/bin/pike ?<,9X06dP
int main()
yowvq4e
{ ?s(%3_h
write("Hello, world!\n"); F<X)eO]tk
return 0; ~f2H@#
} DqrS5!C
-G]\"ZGi
I(/W+o
PL/I =jip* E^
Test: procedure options(main); o87. (
declare My_String char(20) varying initialize('Hello, world!'); URmx8=q
put skip list(My_String); Afo(! v
end Test; YEAiL C+q
#\iQ`Q<B
yInW?3
Prolog O9oVx4=
goal {<ymL}
write("hello,world!"). S1wt>}w0$
"jmi
"O*
=&xamA)
Python EUmQn8
#!/usr/local/bin/python m C_v!nL.
print "Hello, world!" R>BI;IcX
PX52a[wNDH
15#v|/wI'
REXX Jz 'm&mu
say "Hello, world!" ,SuF1&4
8vz9o <I
EU
TTeFp
Ruby )-#%
#!/usr/bin/ruby rPkV=9ull,
print "Hello, world!\n" {_|~G|Z
' ~ lC85
I<z
/Y?
Scheme ]pl g@
(display "Hello, world!") }3j/%oN.(
(newline) e(x1w&8dB
8b!&TP~m1
CspY+%3$
sed (需要至少一行输入) tn+i5Eso
sed -ne '1s/.*/Hello, world!/p' oat*ORL
NtkEb :
M' "S:
Smalltalk FgrOZI;_
Transcript show: 'Hello, world!' zv||&Hi
KR%p*Nh+C
+*a:\b"fx
SNOBOL EN` --^
OUTPUT = "Hello, world!" 'h%)@q)J)
END #JYv1F
Ti#2D3
4&!`Yi_1L
SQL K SDo)7`
create table MESSAGE (TEXT char(15)); TjncW/\Z
insert into MESSAGE (TEXT) values ('Hello, world!'); D&0*+6j((
select TEXT from MESSAGE; o?b$}Qrl
drop table MESSAGE; HZ5*PXg~
NwIl~FNK
tk|Ew!M:
Tcl Q*ZqY
#!/usr/local/bin/tcl !3v!BJ#+,&
puts "Hello, world!" Dh BUMDoB
tcSn`+Bu_`
9(QY~F
TScript VzA~w`$d
? "Hello, world!" &=nwb4
R}8!~Ma`|
<QQgOaS`2
Turing I?lQN$A.E
put "Hello, world!" 4gG&u33RrE
=&U JFu
`S2YBKz,1
UNIX-style shell ,6~c0]/
程序中的/bin/sh可改为您使用的shell |+mhYq|`
V?kJYf(<
#!/bin/sh )3=oS1p
echo 'Hello, world!' <@.f#
zq80}5%2CT
LUna stA^
GUI vE;`y46&r
&q#$SU,$(
Delphi ?9mFI (r~
program HelloWorld; w [I%Id;E
uses ((7~o?Vbg
Dialogs; ELk$lm&