“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。 r}5GJ|p0
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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》。 _|Dt6
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以下是用不同语言写成的Hello World程序的几个例子: oNh .Zgg
Ada R1m18GHQ
with Ada.Text_Io; use Ada.Text_Io; ,}|V'y
procedure Hello is ?<}qx`+%Q
begin 'V>+G>U
Put_Line ("Hello, world!"); e| l?NXRX
end Hello; 2'}2r ~6
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s3knh&'zb
汇编语言 dJ;;l7":~
G?V3lQI1n
x86 CPU,DOS,TASM k/mY. 2yPv
MODEL SMALL V('b|gsEo
IDEAL i)p__Is
STACK 100H @6tx5D?
rLXn35O
DATASEG g!QumRF
HW DB 'Hello, world!$' \G"/Myi
g ` {0I[
CODESEG }9kq?
MOV AX, @data tO0+~Wm
MOV DS, AX }hf*Jw
MOV DX, OFFSET HW =0-qBodbl
MOV AH, 09H Z:OO|x
INT 21H KWY G\#S0]
MOV AX, 4C00H 0qZ)$YKq
INT 21H g[n8N{s
END Lr~K3nb
;K_B,@:'
ditzl(L
x86 CPU,GNU/Linux,NASM V:+bq`
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 0CR;t`M@
;Enter this into "hello.asm" then type: hh{liS% 10
;"nasm -f elf hello.asm" d"cfSH;h
;"ld hello.o -o hello" WT)")0)[
;"./hello" >fdN`W}M
\X`P
W
section .data ;data section declaration ^
Q}1&w%
msg db 'Hello World!',0AH
zhe5i;M
len equ $-msg ;string length tv{.iM|V c
t5qAH++axN
section .text ;code section declaration s [!SG`&
global _start ;entry point (start of execution) lyPXlt
_start: mov edx,len ;string length W7
E-j+2
mov ecx,msg ;string start }:irjeI,
mov ebx,1 ;file handle: stdout |)_R
bqZ
mov eax,4 ;sys_write %xruPWT:k
int 80h ;kernel system call r/v&tU
+OmSR*fA0
mov ebx,0 ;return value ig,|3(
mov eax,1 ;sys_exit izw}25SW
int 80h ;kernel system call g=(+oK?
`iI"rlc
buFtLPe
x86 CPU,Windows,MASM32 Rt|Hma
.386 n\YxRs7
hF
.model flat,stdcall `3KprpE8v
option casemap:none r?TK@^z
;Include 文件定义 }M9al@"
include windows.inc {Vm36/a
include user32.inc i<?4iwX%i*
includelib user32.lib 6.jZy~
include kernel32.inc (
A) wcB
includelib kernel32.lib $^!w`>0C
;数据段 $Da^z[8e
.data ?X1#b2s
szCaption db 'A MessageBox!',0 a3 x~B=E
szText db 'Hello,world!',0 e2fct|'
;代码段 B@=<'/S\7
.code z,)sS<t(
start: &^H
"T6
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK h~@+M5r,
invoke ExitProcess,NULL [
lW
" M
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> \_E.%K
end start fz3*oJ'
/WfVG\NF
;`B35K
AWK 4:'] 'E
BEGIN { print "Hello, world!" } Uz|]}t5V
\7/_+)0}'
q9!9OcN2
BASIC l/^-:RRNKi
传统版BASIC(例如GWBASIC): A&F4;>dms
Y
zS*p~|
10 PRINT "Hello, world!" mmL~`i/
20 END ;Y^RF?un
<^Tj}5)n
或在提示符输入: <T[N.mB
*F*X_O
?"Hello, world!":END ;%<4U^2
t]
wM_]+
现代版BASIC(例如Quick BASIC): m-RY{DO+
Ji[g@#
Print "Hello, world!" &*aU2{,s,;
(Y)h+}n5N
以下的语句在Quick BASIC中同样有效: =fG8YZ(
@W8}N|jek
? "Hello,world!" _vH!0@QFU
.M2&ad :
%Be[DLtE"
BCPL 6sl<Z=E#
GET "LIBHDR" VWy:U#;+8
lg>AWTW[
LET START () BE lM*O+k
$( `uA&w}(G
WRITES ("Hello, world!*N") Nh9!lB m*]
$) =bWq 3aP)P
}!V<"d,!
!d.>r
7w
Befunge )`mF.87b&h
"!dlrow olleH">v dY<#a,eS
, ; ZV^e
^_@ 5R `6zhf
acY[?L_6J
;/ KF3
%
Brainfuck 2TEeP7
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ~q(C j"7
+++++++++++++++.>.+++.------.--------.>+.>. xm5FQ) T
2gAdZE&Y
,jsx]U/^
C Z(mn
U;9{v
#include <stdio.h> lMez!qx,=
N>%KV8>{L
int main(void) T1HiHvJ
{ Xl6ZV,1=n7
printf("Hello, world!\n"); cGta4;
return 0; IQ=|Kj9h
} K)UOx#xe1
"!6~*!]c
8M+F!1-#
C++ xKST-:c +
#include <iostream> P=[x!}.I
h)
PB
int main() up3<=u{>
{ ysJhP .
std::cout << "Hello, world!" << std::endl; n UCk0:{
return 0; YCBML!L
} AJlIA[Kt:
k`mrRs
8sF0]J[g{
C++/CLI ;To+,`?E;q
int main() @-@rG>y^:
{ rbun5&RCyW
System::Console::WriteLine("Hello, world!"); gc7:Rb^E5t
} Rn(F#tI
SA
4je9H%
2mU-LQ1WN
C# (C Sharp) ;
9&.QR(
class HelloWorldApp T.PZ}4
{ `[ ` *@O(y
public static void Main() A;j$rGx
{ [-Tt11
System.Console.WriteLine("Hello, world!"); %802H%+
} H&=4y) /.
} h9w^7MbO
< Gy!i/
o p5^9`"
COBOL DD6`k*RIk.
IDENTIFICATION DIVISION. h8= MVh(I
PROGRAM-ID. HELLO-WORLD. <T.#A8c
C\2 >7
ENVIRONMENT DIVISION. UFAMbI
?CW^*So
DATA DIVISION. P}WhE
X`v79`g_
PROCEDURE DIVISION. X1V}%@3:
DISPLAY "Hello, world!". +JAfHQm-
STOP RUN. ^_S-s\DW
`Y({#U
3g#=sd!0O@
Common Lisp =']};
(format t "Hello world!~%") O{cGk:
y
q{Ta?|x#
F;&fx(
DOS批处理 9k+&fyy
@echo off (T#(A4:6S
echo "Hello, world!" dYew7
;0Ct\ [eh
a2=uM}Hsp
Eiffel O$umu_
class HELLO_WORLD )>X|o$2
L1!hF3G
creation a.`JS
make GKsL~;8"
feature )bCG]OM7<
make is Rw
ao5l=x
local cM<hG:4%wX
io:BASIC_IO 0@e}hv;
do CWe>jlUQ
!!io Zc\h15+P
io.put_string("%N Hello, world!") 0O['-x
end -- make Jyz$&jqyr'
end -- class HELLO_WORLD EBDC '^
<&Y}j&(
>gZk
581/
Erlang gC_s\WU
-module(hello). cH* /zNp
-export([hello_world/0]). N4` 9TN7
&(uF&-PwO4
hello_world() -> io:fwrite("Hello, World!\n"). eYD9#y
!Nxn[^[?.
At[n<8_|
Forth mp+\!
." Hello, world!" CR ?Str*XA;
K'{W9~9Lq
! N"L`RWD
Fortran g"dZB2`C
WRITE(*,10) \l=KWa 3Q
10 FORMAT('Hello, World!') ^~r&}l4c,
STOP qJFgbq4-
END U3|&Jee
y%IG:kZ,
@(,{_c]
HTML F3Ak'h{Ay
<HTML> */5<L99v
<HEAD> ^;CR0.4
<TITLE> Hello World! </TITLE> jY#(A23
</HEAD>
u5{5ts+:
<BODY> DtJTnvG~B
<p>Hello World!</p> ++Ys9Y)*,
</BODY> nzE,F\k
</HTML> v1"g!%U6
spSN6.j
1y)$[e
HQ9+ |<$<L`xoe
H O2'bNR
B
)1<`nJA
VNxpOoV=S
INTERCAL A"bSNHCKF
PLEASE DO ,1 <- #13 ]2xx+P#Y
DO ,1 SUB #1 <- #238 hV>4D&<
DO ,1 SUB #2 <- #112 @cS1w'=
DO ,1 SUB #3 <- #112 sx-Hw4.a"
DO ,1 SUB #4 <- #0 XEUa
DO ,1 SUB #5 <- #64 z"s%#/#
DO ,1 SUB #6 <- #238 AK~`pq[.
DO ,1 SUB #7 <- #26 SP
D207
DO ,1 SUB #8 <- #248 K5)yM @cq
DO ,1 SUB #9 <- #168 .cH{WZ
DO ,1 SUB #10 <- #24 WK_y1(v>
DO ,1 SUB #11 <- #16 GEe 0@q#YA
DO ,1 SUB #12 <- #158 Dc&9emKI
DO ,1 SUB #13 <- #52 _r<zSH%
PLEASE READ OUT ,1 R!_8jD:$
PLEASE GIVE UP rKy-u
V$-~%7@>;9
G1?0Q_RN
Java I4o=6ts
public class Hello 35%[DUkb
{ N)vk0IM!
public static void main(String[] args) }o!#_N0T
{ _@BRpLs:4
System.out.println("Hello, world!"); * Y%<b86U
} XYK1-m}2
} rt 3f7 s*
kY'<u
|Uy e>%*}4
JSP 0U~;%N+lv
<% :!+}XT7)/
out.print("Hello, world!"); u^aFj%}]L
%> >2| [EZ
]e@0T{!
XoKO2<3
MIXAL )DGz`->
TERM EQU 19 the MIX console device number , N@Yk.
ORIG 1000 start address l}Q"Nb)
START OUT MSG(TERM) output data at address MSG tL={ y*
HLT halt execution DD/>{kff
MSG ALF "MIXAL" _4.]A3;}
ALF " HELL" >op:0on]}
ALF "O WOR" c|\ZRBdI
ALF "LD " \uU=O
)
END START end of the program (b/A|hl
.)"_Q/q
S1 EEASr!}
Nuva [5?4c'Ev
<..直接输出..> (xZr ]v ]U
Hello, world! tb:,Uf>E
M('s|>\l
<..或者..> ?Y?gzD
(kWSK:l
<. QQg8+{>
// 不带换行 *PSvHXNi
? "Hello, world!" :mXGIRi
:jt;EzCLg%
// 或者 vU_d=T%$
(~j,mk
// 带换行 fBf4]^
?? 'Hello, world!' 74@lo-/LY
.> &v5G92
P"(z jG9-
heE}_,$|
OCaml ia%z+:G
let main () = @uI?
print_endline "Hello world!";; f7XQ~b
&a%WM
a|DsHZ^6^
Pascal v229H<
program Hello; ,op]-CY5
begin }xAie(
writeln('Hello, world!'); Awu$g.
end. q"gqO%Wb|
qP~WEcH`[
,?l~rc
Perl _j:UGMTi(U
#!/usr/local/bin/perl ;{<aA 5
print "Hello, world!\n"; q,[k7&HS
C`\9cej
,HFs.9#&B
PHP $> "J"IX
<?php k:b/Gq`
print("Hello, world!"); S~KS9E~\
?> aq3~!T;W
3lo;^KX !
2\^G['9
Pike @Ii-NmOr
#!/usr/local/bin/pike XDPL;(?
int main() :P3{Nxa
{ +c^_^Z$_4o
write("Hello, world!\n"); s|Z:}W?{
return 0; `W@T'T"
} )PR3s1S^
=43I1&_
0cHfxy3
PL/I O^5UB~
Test: procedure options(main); KAd_zkUA
declare My_String char(20) varying initialize('Hello, world!'); +7,8w
put skip list(My_String); '.?^uM
end Test; b2N6L2~V
6X/wdk
qE )Y}oN
Prolog tawe Gc%~
goal F\a]n^
Y
write("hello,world!"). Pm4e8b
3sH\1)Zz
g>so
R&*
Python Vy__b=ti?
#!/usr/local/bin/python !; IJ
print "Hello, world!" 9A~>`.y
QV7,G9
cv}aS_`f
REXX <OTWT`G2
say "Hello, world!" nqT> qS[Z
RctU' T
|,b2b2v?
Ruby zj<ahg%z
#!/usr/bin/ruby \V,c]I
print "Hello, world!\n" "!O1j
r;
U4BqO
:sd
bmu6@jT
Scheme "e 1wr
(display "Hello, world!") *h$&0w
y
(newline) k<H%vg>{~s
Vtr3G.P^
Ly;I,)w
sed (需要至少一行输入) tJNIr5o
sed -ne '1s/.*/Hello, world!/p' zh\$t]d<I
4o<*PPA1
%}P4kEY
Smalltalk H+ lX-,
Transcript show: 'Hello, world!' J!{Al
mzX;s&N#
'BY-OA#xJ
SNOBOL ?~J i-{#X
OUTPUT = "Hello, world!" s=Df `
END u:@U
$:sZ
Y25^]ON*\^
#02Kdo&Vy
SQL Zb(E:~h\
create table MESSAGE (TEXT char(15)); AEY$@!8
insert into MESSAGE (TEXT) values ('Hello, world!'); [ $pmPr2
select TEXT from MESSAGE; j(iuz^I
drop table MESSAGE; ~:4~2d|
=. *98
`1Zhq+s
Tcl OR:[J5M)
#!/usr/local/bin/tcl 0"78/6XIs
puts "Hello, world!" _T5)n=|
B/G-Yh$E
/.Fj.6U5
TScript _%~$'Hy
? "Hello, world!" 54{q.I@n
+`B'r
'
3uV4/%U
Turing w7FoL
put "Hello, world!" oKA& An
X8i(~
B
5+- I5HX|~
UNIX-style shell hN3u@P^
程序中的/bin/sh可改为您使用的shell y7:tr
\=;uu_v$
#!/bin/sh Ye5jB2Z
echo 'Hello, world!' wG1l+^p
Ts9ktPlm
z
x@$RS+]
GUI "7,FXTaer
d--'Rn5
Delphi pu+ur=5&
program HelloWorld; Zp&@h-%YoD
uses 9XLFHV("
Dialogs; S|em[D[Y^
begin /*$hx @ih
ShowMessage('Hello, World!'); fuUm}N7
end. @*>Sw>oet
C$d>_r
t{dSX?<nt
Nuva AQss4[\Dx
<. }fZ`IOf
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) h5"Ov,K3[
.> \,&9
@?kM'*mrZM
$g10vF3
Visual Basic D\1k.tI
MsgBox "Hello, world!" >\2:\wI
'或者 kL>d"w
Print "Hello, world!" @F~LW6K
^e Gue
jZpa0g rA
Visual FoxPro 9zBMlc$X
? "Hello, world!"
X[](Kj^`<
nXA\|c0
T6#CK
X11 WC,+Cn e
用一个程序
?wb+L
X^@I].
xmessage 'Hello, world!' 17|np2~
pI.+"Hz
用C++和gtkmm 2 =IU*}>#
\.uc06
#include <iostream> w Q+8\ s=
#include <gtkmm/main.h> ]y@F8$D!
#include <gtkmm/button.h> &fOdlQ?
#include <gtkmm/window.h> e:w&(is
using namespace std; F_;DN:
{
l[GOs&D1
class HelloWorld : public Gtk::Window &a,OfSz
{ 52_#
public: a4MZ;5
HelloWorld(); 0aI;\D*Ts
virtual ~HelloWorld(); /)
4GSC}Gg
protected: IA&L]
Gtk::Button m_button; *sw7niw
virtual void on_button_clicked(); ^|!I+
}; c{+A J8
}8-\A7T
HelloWorld::HelloWorld() : m_button("Hello, world!") I1Sa^7
{ %+)o'nf"U
set_border_width(10); @}-r&/#
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); h#r^teui)
add(m_button); 5kypMHJm
m_button.show(); FQz?3w&ia
} a:,y
Z
;`YkMS`=W
HelloWorld::~HelloWorld() {} <A5]]{9 +
+|iYg/2
void HelloWorld::on_button_clicked() AK!hK>u`
{ }n_p$g[Nj/
cout << "Hello, world!" << endl; ;Q;[*B=kE
} l_tw<`Ep
%V`F!D<D
int main (int argc, char *argv[]) l v&mp0V+
{
+=q)
Gtk::Main kit(argc, argv); ~[WF_NU1y
HelloWorld helloworld; b2,mCfLsv
Gtk::Main::run(helloworld); iIT8H\e
} ^ KK_qC
a ]Eg!Q
A>`945|
Java 51C2u)HE
import java.awt.*; `:m!~
import java.awt.event.*; '_\;jFAM
$''?HjB}T
public class HelloFrame extends Frame }9HmTr|
{ j(:I7%3&(*
HelloFrame(String title) 2T@GA1G
{ kd`0E-QU
super(title);
D_mL,w
} 7?8wyk|x
public void paint(Graphics g) {5r0v#;
{ >T2LEW
super.paint(g); E/&Rb*3
java.awt.Insets ins = this.getInsets(); u%/fx~t$
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); o%{'UG
} im} ?rY
public static void main(String args []) {Gq*e/
{ <ljI;xE
HelloFrame fr = new HelloFrame("Hello"); %J:SO_6
bzDIhnw
fr.addWindowListener( 8P7"&VYc8
new WindowAdapter() ml0.$z
{ v2r&('pV
public void windowClosing(WindowEvent e) UJfT!= =U
{ >d"3<S ;b
System.exit( 0 ); (&|_quP7O
} @E( 7V(m/
} HoV^Y6
); d)cOhZy
fr.setResizable(true); f4-a?bp
fr.setSize(500, 100); XC 7?VE
fr.setVisible(true); TD[EQ
} YjF|XPv+ l
} CQ`=V2:"ON
LE5.b]tv2
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