“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。 7S:\"A7
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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》。 _D&598 xx
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以下是用不同语言写成的Hello World程序的几个例子: /C:gKy4
Ada s!zx}
5
with Ada.Text_Io; use Ada.Text_Io; G>}255qY
procedure Hello is rXP,\ ]r+
begin AV]2euyn
Put_Line ("Hello, world!"); my1@41
H
end Hello; l|[N42+
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v!-pSa)3
汇编语言 qYQl,w
^uc=f2=>,
x86 CPU,DOS,TASM G e@{_
MODEL SMALL iWkWR"ysy
IDEAL h,N?Ab'S
STACK 100H i1d'nxk6
EME|k{W
DATASEG ;JT-kw6l5K
HW DB 'Hello, world!$' O=t_yy
Ll't>)
CODESEG qInR1 r<
MOV AX, @data +Kc
MOV DS, AX CK@@HSm}l
MOV DX, OFFSET HW WpP}stam/
MOV AH, 09H V f&zL
Sgr
INT 21H FD
#8mg
MOV AX, 4C00H O0v}43J[
INT 21H F/{!tx
END T'9'G
M
Sz`,X0a
t3_O H^
x86 CPU,GNU/Linux,NASM 0#hlsfc]\
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). zC!t;*8a
;Enter this into "hello.asm" then type: `U_)98
;"nasm -f elf hello.asm" 9cF[seE"0
;"ld hello.o -o hello" 8TKnL\aar
;"./hello" >tr}|>
cuITY^6
section .data ;data section declaration _TZRVa_
msg db 'Hello World!',0AH tcI*a>
len equ $-msg ;string length (?c"$|^J
Rhs/3O8k
section .text ;code section declaration 7n<{tM
global _start ;entry point (start of execution) !Ai@$tl[S
_start: mov edx,len ;string length j,eo2HaL
mov ecx,msg ;string start Zu[su>\
mov ebx,1 ;file handle: stdout q]-r@yF
mov eax,4 ;sys_write b8UO,fY q
int 80h ;kernel system call #c!lS<z
Ld~/u]K%V
mov ebx,0 ;return value C&%_a~
mov eax,1 ;sys_exit {VRf0c
int 80h ;kernel system call CHX #^0m.
H7n>Vx:L-
0{D'n@veP
x86 CPU,Windows,MASM32 C1)!f j=
.386 J
ZS:MFA
.model flat,stdcall 1))8
A@,
option casemap:none oG\Vxg*
;Include 文件定义 H1./x6Hr
include windows.inc 1Pu~X
\sO
include user32.inc lL3U8}vn
includelib user32.lib
b4kgFA
include kernel32.inc Jnov<+
includelib kernel32.lib T8$y[W-c
;数据段 A;M'LM- M
.data u6JM]kR
szCaption db 'A MessageBox!',0 rEWb"
szText db 'Hello,world!',0 Svmy(w~m
;代码段 #X1ND
.code |Rk@hzM2S
start: 0GeTSFj
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK
/J;Kn]5e
invoke ExitProcess,NULL GD$l||8
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> )y$(AJx$
end start 46h<,na?,
qX{+oy5
li.;IWb0+)
AWK m{HS0l'
BEGIN { print "Hello, world!" } UCj ld
xb8!B
kffcm/
BASIC ~]2K^bh8&
传统版BASIC(例如GWBASIC): ~9@UjQ^)F
kxv1Hn"`{E
10 PRINT "Hello, world!" .ioEIs g
20 END xy;;zOh`
R\[e!g*I
或在提示符输入: a:w#s}bL
%.|@]!C
?"Hello, world!":END Km$\:Xo
_t^&Ah*
现代版BASIC(例如Quick BASIC): Dlvz)
s$j,9uRr
Print "Hello, world!" |+9&rAg
dy[X3jQB
以下的语句在Quick BASIC中同样有效: :V||c 5B+
d2$IH#~9B
? "Hello,world!" OneY_<*a<
D&y7-/
K}Qa~_
BCPL WpvhTX
GET "LIBHDR" 3JR+O<3D
S
f#
R0SA
LET START () BE <a3WKw
$( t ?FBG4
WRITES ("Hello, world!*N") R:qW;n%AF
$) f!X[c?Xy"
|FRg\#kf%
$XH^~i;
Befunge /)O"l @ }U
"!dlrow olleH">v `R^g U]Z,
, QMm%@zH
^_@ 5z)~\;[ -
X:{!n({r=
F#E3q|Q"BS
Brainfuck !&E-}}<
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< jL}v9$
+++++++++++++++.>.+++.------.--------.>+.>. 8z\xrY
>H,*H;6
$*m-R*kt
C qH_Dc=~la
#include <stdio.h> R4d=S4i
(QB2T2x
int main(void) "0TZTa1e
{ ~gt@P
printf("Hello, world!\n"); zm;C\s rF
return 0; 2
yz _
} |y!A&d=xYn
a8Wwq?@
EoDA]6?Lj
C++ Dvln/SBk
#include <iostream> c:.eGH_f
08{@rOr
int main() 93hxSRw
{ 2:ylv<\$
std::cout << "Hello, world!" << std::endl; =Fl^`*n
return 0; e96k{C`j0
} ^<AwG=
NGW xN8P6
8dhUBJ0_
C++/CLI P0b7S'a4!
int main() *{{89E>wC
{ tLmTjX .6
System::Console::WriteLine("Hello, world!"); zx7{U8*`<
} @lph)A Nk
k VQ\1!
rrv%~giU
C# (C Sharp) vfo~27T{(
class HelloWorldApp rVsJ`+L
{ Af{"pzY
public static void Main() Rx}Gz$
{ vr^qWn
System.Console.WriteLine("Hello, world!"); @=kSo
-SX
} as=LIw}Q4
} `P ,d$H "
PFK
'$
n(]-y@X0_
COBOL ;*&-C9b
IDENTIFICATION DIVISION. Yz<1
wt7;
PROGRAM-ID. HELLO-WORLD. @s^-.z
RpYERAgT
ENVIRONMENT DIVISION. o _H`o&xr
@\I#^X5lv
DATA DIVISION. $,'*f?d
\uMLY<]P
PROCEDURE DIVISION. *uvQ\.
DISPLAY "Hello, world!". TuqH*{NNy9
STOP RUN. FC"8#*x
_wL BA^d^
WMg~Y"W
Common Lisp lb1Xsgm{
(format t "Hello world!~%") 2f_:v6
s"?3]P
b>9>uC@J15
DOS批处理 WMP,\=6k0
@echo off ,6W>can
echo "Hello, world!" HUO j0T
B?o7e<l[
Xb,3Dvf
Eiffel BFW&2
class HELLO_WORLD GvlS%
OK
gqT!
creation A.w:h;7
make vVcob}ZH
feature ei5~&
make is 4nz 35BLr
local C2)2)
io:BASIC_IO YT8F#t8
do dnuu&Rv
!!io NW)1#]gg%
io.put_string("%N Hello, world!") gv{ >`AN
end -- make /|#fejPh
end -- class HELLO_WORLD t );/'3|
Vs{|xG7WD
v74&BL]a
Erlang 0Fr?^3h
-module(hello). G9@0@2aY8
-export([hello_world/0]). *k>n<p3dd
?b5^
hello_world() -> io:fwrite("Hello, World!\n"). <_KIK
-n5)w*b,
VOh4#%Vj
Forth @$K"o7+]
." Hello, world!" CR F1Bq$*'N$w
_t}WsEQ+P
-1@<=jX3_
Fortran $
o#V#
WRITE(*,10) `pZm?}K
10 FORMAT('Hello, World!') fLAw12;^
STOP ;P&OX5~V
END w"&n?L
1ZB"EQ
FN) $0
HTML $]2vvr
<HTML> !_Z&a
<HEAD> R_S.tT!
<TITLE> Hello World! </TITLE> ?#Q #u|~
</HEAD> lCHO;7YHX
<BODY> *siFj
CN<
<p>Hello World!</p> <yg F(
</BODY> Yp2e Bgo"
</HTML> t.\dpBq
K)k<Rh[<
eO[b1]WLP
HQ9+ *bpD`s
@
H 6/dI6C!
Tkgs]q79
IRqy%@)
INTERCAL 9490o:s
PLEASE DO ,1 <- #13 )TM4R)r%)9
DO ,1 SUB #1 <- #238 i8HTzv"J
DO ,1 SUB #2 <- #112 8Kk(8a&v
DO ,1 SUB #3 <- #112 P J[`|
DO ,1 SUB #4 <- #0 R0
DO ,1 SUB #5 <- #64 K@w{"7}
DO ,1 SUB #6 <- #238 {3vNPQJ
DO ,1 SUB #7 <- #26 l0i^uMS
DO ,1 SUB #8 <- #248 g5r(>, vY
DO ,1 SUB #9 <- #168 r^ ZEImjc
DO ,1 SUB #10 <- #24 lBGQEP3;
DO ,1 SUB #11 <- #16 .y:U&Rw4
DO ,1 SUB #12 <- #158 \mlqO[ S
DO ,1 SUB #13 <- #52 0h7r&t%YsV
PLEASE READ OUT ,1 >!)DM]Ri
PLEASE GIVE UP Jma1N;d
`%WU8Yv
cD'V>[h
Java fw{gx
public class Hello fvxu#m=
{ :tv,]05t
public static void main(String[] args) C'}KTXiRW
{ | (_
System.out.println("Hello, world!"); HT1!5
} \=0Vi6!Mc
} x{WD;$J
3I-MdApT
q;)JISf.
JSP 0v$~90)
<% $z*'fXg
out.print("Hello, world!"); T 0rGM
%> h>OfOx/{q9
85xR2 <:
hODWB&b
MIXAL 'Ne@e)s9
TERM EQU 19 the MIX console device number 0}quG^%_
ORIG 1000 start address aPbE;"
f
START OUT MSG(TERM) output data at address MSG e.V:)7Uc
HLT halt execution ^eYVWQ'
MSG ALF "MIXAL" ,{?%m6.lE
ALF " HELL" }Y36C.@H
ALF "O WOR" [87,s.MK
ALF "LD " !ff&W1@
END START end of the program $(>+VH`l
RF0HjgP
hSyql
Nuva #],&>n7'
<..直接输出..> F6flIG&h
Hello, world! i5,kd~%O
y>e.~5;
<..或者..> 9j:"J` '
C#Iybg
<. HEc+;O1<
// 不带换行 3y8G?LL/[7
? "Hello, world!" 9\JF`ff_
r#]WI|
// 或者 (+y
|64~K\X
// 带换行 YcK|.Mq':
?? 'Hello, world!' }s<4{:cv+
.> :T
!'N\7
L AAHEv
K1!j fp
OCaml ax5<#3__
let main () = j
Dv{/)
print_endline "Hello world!";; G?/DrnK:
_D(rI#q
v^iL5y!
Pascal yFlm[K5YD
program Hello; a ]tVd#
begin Px`!A EFd[
writeln('Hello, world!'); ':m,)G5&
end. ly3\e_z:G
HcSXsF
tr}Loq\y
Perl *CTlOy
#!/usr/local/bin/perl `t'W2X
print "Hello, world!\n"; {
W{]L:
o.\F.C$
N `F~n%N
PHP LsS
<?php R2]Z kg
print("Hello, world!"); .O}%
?> dP]\Jo=Yh
D#JL!A%O
!LN?PKJ
Pike s'J:f$flS
#!/usr/local/bin/pike g:Xhw$x9
int main() AvV|(K"
{ 6h,(wo3Y
write("Hello, world!\n"); RMWHN:9
return 0; =`s!;
} ?\s+EE&-
/9pwZ%:<
o@i#|kx,
PL/I 6 EC*
Test: procedure options(main); yx&51G$
declare My_String char(20) varying initialize('Hello, world!'); ;8{4!S&b
put skip list(My_String); )6,=f.%
end Test; '|p$)yx2
9b"=9y,
9=h'9Wo
Prolog ^)*-Bo)I
goal
^J)mH[
write("hello,world!"). >!bJslWA
FOy|F-j
8=uu8-l8g
Python k:F9. j%*
#!/usr/local/bin/python kH7(@Pa
print "Hello, world!" rb+j*5Es
=wOm}V8N&
OGg># vj,s
REXX Y^}Z>
say "Hello, world!" 3L}!RB
p &"`RS#Z
W~9tKT4
Ruby };jN\x?&q
#!/usr/bin/ruby (VEpVn3{
print "Hello, world!\n" \Vy Z
"8^
Ch{G-
v)t:|Q{I
Scheme OJ5#4qJ[
(display "Hello, world!") <;m<8RjX
(newline) r@t9Ci=}
Mh/dpb\Z
fc-iAj
sed (需要至少一行输入) ]J$eDbaEjT
sed -ne '1s/.*/Hello, world!/p' S:oi<F
:AF =<X*5
"h a L
Smalltalk dj7hx"BI
Transcript show: 'Hello, world!' 6GSI"M6s
lc,tVe_
J1I ;Jgql(
SNOBOL ERE)A-8
OUTPUT = "Hello, world!" X"e5Y!:M-
END ?Unb?
{,&2
:f}9($
*|C^=*j9
SQL T;y>>_,
create table MESSAGE (TEXT char(15)); $oU*9}}Rn
insert into MESSAGE (TEXT) values ('Hello, world!'); b TM{l.Aq3
select TEXT from MESSAGE; %GA"GYL9'
drop table MESSAGE; vAh6+K.e
,3p~w5C/+[
BJsz2t :0
Tcl #W'HR
#!/usr/local/bin/tcl >
BY&,4r
puts "Hello, world!" wq(7|!Eix
(@<c6WS
],FMwCI
TScript 9~mh@Kgv
? "Hello, world!" JedmaY06=
s{S4J'VW
M&@b><B
Turing &d+Kg0 :
put "Hello, world!" 0y;*Cfi9
n}_JB>i~
?Exv|e
UNIX-style shell B~JwHwIhA
程序中的/bin/sh可改为您使用的shell ~&8^9E a
4c$ zKqz
#!/bin/sh f]|ysf
echo 'Hello, world!' YoZFwRQU
r(aLEJ"u?
A3no~)wZn
GUI l(u.I2^o
Jz.NHiLct1
Delphi v~V5`%
program HelloWorld; -pa )K"z
uses ?_$=l1vf
Dialogs; ;8*`{F[
begin q<[_T
ShowMessage('Hello, World!'); FsV'Cu@!U
end. WD2]&g
pP?MWe
Eg
cc&axc7I
Nuva Xg
SxN!I
<. !\i\}feb
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) {7;8#.S72
.> UXugRk%d
V_RTI.3p
dC$Em@Nb
Visual Basic d`nVc50
MsgBox "Hello, world!" XZJ+h,f
'或者 <2|O:G
Print "Hello, world!" %Nhx;{
3'qJ/*]9
-/cZeQDPb
Visual FoxPro ang~<
? "Hello, world!" Xr2ou5zAn
.DR<Te
%K`% *D
X11 pr#z=vqH
用一个程序 WObvbaK
Vf'd*-_!Q<
xmessage 'Hello, world!' Jd(,/q
|8=nL$u
用C++和gtkmm 2 ,:`4%
a1.Ptf eW|
#include <iostream> _$f9]bab
#include <gtkmm/main.h> ]*FVz$>XM
#include <gtkmm/button.h> vj\d A2!~
#include <gtkmm/window.h> U{z9>
using namespace std; %D8ZO0J7H
7L@K _ZJ
class HelloWorld : public Gtk::Window W4e5Rb4~f"
{ ryCI>vJz
public: Y$Y_fjd_
HelloWorld(); &)vC;$vD`
virtual ~HelloWorld(); I1\a[Xe8E
protected: T ;vF(
Gtk::Button m_button; GXjfQ~<]
virtual void on_button_clicked(); C;`XlQG `
}; Bj}^\Pc;}
{>,V\J0p
HelloWorld::HelloWorld() : m_button("Hello, world!") +
33@?fl.
{ %Gj8F4{
set_border_width(10); t{FlB!jv
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); ;._7jFj.
add(m_button); 8&~~j7p,
m_button.show(); no]z1D
} wUQw!%?>
0iK;Egwm
HelloWorld::~HelloWorld() {} TJ'[--
+$(2:S*r
void HelloWorld::on_button_clicked() K+8-9$w6
{ Q7C;1aO
cout << "Hello, world!" << endl; 4*mS y
} EG0auzW?
\eb|eN0i
int main (int argc, char *argv[]) &q