“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。 jm|x=s3}h
xY3KKje
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》。 p2v+sWO
Ro&s\T+d
以下是用不同语言写成的Hello World程序的几个例子: [M:ag_rm+f
Ada `s0`kp
with Ada.Text_Io; use Ada.Text_Io; 9Ai e$=
procedure Hello is J(k\Pz*
begin 9VEx0mkdd
Put_Line ("Hello, world!"); |4=Du-e
end Hello; A Th<=1
U
Bo[iZ|%
h($XR+!#
汇编语言 )<fa1Gz#^
Y[(U~l,a+
x86 CPU,DOS,TASM @X _<y
MODEL SMALL z0@{5e$#Y
IDEAL Y|*a,H"_
STACK 100H /< OoZf+[
Gr1WBYK
DATASEG =Nyq1~
HW DB 'Hello, world!$' 6c[&[L%
A/WmVv6
CODESEG EWI2qaSnO
MOV AX, @data +prr~vgE
MOV DS, AX *0EB{T1
MOV DX, OFFSET HW nUp, %z[
MOV AH, 09H 5:oteNc3
INT 21H 91|0{1
MOV AX, 4C00H OMl<=;^:|
INT 21H vz\^Aa
#fv
END "@P)
m%=]
j<A
m2i'$^a#
x86 CPU,GNU/Linux,NASM ZQY]c
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). W8@o7svrh
;Enter this into "hello.asm" then type: !=-{$& {
;"nasm -f elf hello.asm" z 1~2w:
;"ld hello.o -o hello" q6A"+w,N
;"./hello" *bOgRM[
xcVF0%wVC
section .data ;data section declaration V|vKYEFry
msg db 'Hello World!',0AH j'2:z#
len equ $-msg ;string length 8p91ni'
4!l%@R>O2
section .text ;code section declaration 3 P)N,
global _start ;entry point (start of execution) !4?QR
_start: mov edx,len ;string length h'wI
mov ecx,msg ;string start SU8vz/\%y
mov ebx,1 ;file handle: stdout
KF.d:
mov eax,4 ;sys_write p+ki1!Ed
int 80h ;kernel system call 0@BhRf5
)0tq&
mov ebx,0 ;return value lD K<gd
mov eax,1 ;sys_exit t XbMP
int 80h ;kernel system call ZLN79r{T
8|U-{"!O?
!_a@autj
x86 CPU,Windows,MASM32 hFLLg|@
.386 /:BM]K
.model flat,stdcall q]^Q?r<g::
option casemap:none /'g/yBY
;Include 文件定义 `P(Otr[6
include windows.inc z:Q4E|IX
include user32.inc +|iJQF
includelib user32.lib P
{8d.
include kernel32.inc oh@|*RU
includelib kernel32.lib #mFY?Zp)
;数据段 zCuN8
.data fG`<L;wi
szCaption db 'A MessageBox!',0 /XeCJxo8
szText db 'Hello,world!',0 5GHW~q!Zo\
;代码段 FN>ns,
.code V 5
start: K+F]a]kld
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK P c'0.4
invoke ExitProcess,NULL :JI&ngWK
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> fRow@DI\
end start 5Mb5t;4b
*~b}]M700
xnp5XhU
AWK $bho]~
BEGIN { print "Hello, world!" } "m'roU
KhWt9=9
sf(2~BMQI
BASIC Y}aaW[
传统版BASIC(例如GWBASIC): &4
~C%{H3
.!><qVg
10 PRINT "Hello, world!" IT5a/;J
20 END =D}]|ie
/W @k:
或在提示符输入: o4l=oY:'
@ /yQ4Gr
?"Hello, world!":END BQ
/0z^A
61*inGRB
现代版BASIC(例如Quick BASIC): PDQ\ND
$HE ?B{
Print "Hello, world!"
%1jlXa
o'hwyXy/S
以下的语句在Quick BASIC中同样有效: \-F
F[:|J
ky^u.+cZ
? "Hello,world!" ]y52%RAKI
'(S@9%,aK1
y(2FaTjM
BCPL ;v=v4f'+
GET "LIBHDR" 4w)aAXK
4^>FN"Ve`B
LET START () BE ?_<14%r;
$( :TTZ@ q
WRITES ("Hello, world!*N") u@ psVt
$) s${|A=
,!{/Y7PmJ
$ Lf-Gi
Befunge fMSB
"!dlrow olleH">v :"utFBO
, Obl,Qa:5
^_@ "n
Zhuk
B]C 9f
YH
.+(tNv
Brainfuck YYzl"<)c
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< zo{WmV7[|
+++++++++++++++.>.+++.------.--------.>+.>. z}sBx9;
8`4Z%;1
hOTqbd}
C Y7L1`<SC
#include <stdio.h> *(pmFEc
X61p xPa
int main(void) 017(I:V?(:
{ =w#sCy
printf("Hello, world!\n"); uz8Y)b
return 0; /#]4lFk:h
} x*}*0).
`N,q~@gL
1TIP23:
C++ >qT4'1S*g
#include <iostream>
Fb:Z.
d0"Xlleld
int main() v?
VNWK2
{ Hb:@]!r>
std::cout << "Hello, world!" << std::endl; ns/L./z
return 0; #383W)n
} IBY(wx[5S
{:!CA/0Jx
Eqc,/
C++/CLI #y4+O;{
int main() Ki_8g
{ O*%@(w6
System::Console::WriteLine("Hello, world!"); ',g'Tl^E
} 'GJ'Vli
pk&;5|cCD
fSL'+l3
C# (C Sharp) 7yDWc m_y
class HelloWorldApp 8F#z)>q~
{ /GQN34RD
public static void Main() ,%uK^U.zk
{ = "N?v-
System.Console.WriteLine("Hello, world!"); 61"w>;d6
} pMy];9SvW
} x6BO%1
@9X+ BdQU
'U8% !
COBOL O 6}eV^y
IDENTIFICATION DIVISION. 2&+Nr+P
PROGRAM-ID. HELLO-WORLD. ^o@N.+`&<
+l8`oQuG
ENVIRONMENT DIVISION. HAtf/E]
JPq2C\Ka
DATA DIVISION. wm<`0}
/ ~\ I
PROCEDURE DIVISION. F#S)))#
DISPLAY "Hello, world!". W?
^ ?Kx
STOP RUN. #3WKm*T/
F=qG+T
&P,z$H{o@
Common Lisp ZNX=]]HM<n
(format t "Hello world!~%") 6k@(7Mw8A
m[t4XK
btV
Tt5
DOS批处理 E#L"*vh
@echo off $ZEwz;HNo
echo "Hello, world!" rCTH 5"
l)^sE)
~s[St0
Eiffel /l)|B
class HELLO_WORLD \W',g[Y:
`1T?\
creation QwaAGUA
make ;vDjd2@
feature Oz:J8l%
make is #,4CeD|(D,
local )8rN
io:BASIC_IO GOII
B
do )PNeJf|@
!!io X4bB
io.put_string("%N Hello, world!") 0M=U>g)
end -- make `7))[._
end -- class HELLO_WORLD 8>KBh)q
ZI0C%c.~
:nPLQqXGQ
Erlang pg4J)<t#
-module(hello). X^!1MpEQ
-export([hello_world/0]). 0';U3:=i,
I5$@1+B
hello_world() -> io:fwrite("Hello, World!\n"). r{Cbx#;
;Ww s;.~
F.%g_Xvk:
Forth >Wbt_%dKy
." Hello, world!" CR l1utk8'-
s:fy
*6=[Z
MBO3y&\S4
Fortran >kLUQ%zE@
WRITE(*,10) Gop;!aV1*
10 FORMAT('Hello, World!') u0M? l
STOP < SIe5"{
END !|1GraiS
s?JNc4q
n.a55uy
HTML [It
E+{U
<HTML> {r$n
$
<HEAD> fF"\$Ny
<TITLE> Hello World! </TITLE> <A_L Zi
</HEAD> $<~o,e-4
<BODY> r@XH=[:
<p>Hello World!</p> _eE hIQ9
</BODY> z'(][SB
</HTML> J!5>8I(_wX
)0Lno|l
^Iz(V2
HQ9+ x2KIGG^
H ;Rz+4<
b\dzB\,&
etPb^$
INTERCAL }!W,/=z*
PLEASE DO ,1 <- #13 J=*X%^jX9Z
DO ,1 SUB #1 <- #238 @
z{E
DO ,1 SUB #2 <- #112 PS13h_j
DO ,1 SUB #3 <- #112 n'&Cr0{
DO ,1 SUB #4 <- #0 _2wU(XYH
DO ,1 SUB #5 <- #64 !='?+Ysxs
DO ,1 SUB #6 <- #238 xjplJ'jB
DO ,1 SUB #7 <- #26 m-M.F9R
DO ,1 SUB #8 <- #248 k6pXc<]8
DO ,1 SUB #9 <- #168 vwlPFrLl
DO ,1 SUB #10 <- #24 "i}?jf
{a
DO ,1 SUB #11 <- #16 !5/jDvh
DO ,1 SUB #12 <- #158 Q|O! cEW/
DO ,1 SUB #13 <- #52 |Zn|?#F
PLEASE READ OUT ,1 9qHbV
9,M
PLEASE GIVE UP [KT'aGK$
D(m2^\O[
%s^2m"ca}=
Java ]4$t'wI.
public class Hello !@r1B`]j+"
{ 2}ttCm
public static void main(String[] args) KXAh0A?&+
{ Yb~[XS |p
System.out.println("Hello, world!"); /hojm6MM
} } ! jk
} I1IuvH6
<Ag`pZ<s
N<e=!LV
JSP '\&t3?;
<% z^KMYvH
g
out.print("Hello, world!"); e)Be*J]4
%> 4FWb5b!A=
u+&t"B
-UHa;WH
MIXAL }i"\?M
TERM EQU 19 the MIX console device number
S#kA$yO
ORIG 1000 start address 4490l"
START OUT MSG(TERM) output data at address MSG :#?Z)oQpT
HLT halt execution `<0{U]m
MSG ALF "MIXAL" aQMUC6cPM@
ALF " HELL" K!JXsdHK
ALF "O WOR" J`&*r;""V
ALF "LD " 3XCePA5z
END START end of the program (zVT{!z
Ic%c%U=i
2=&4@c|cn
Nuva -*Voui
<..直接输出..> SnK#YQCDt
Hello, world! C6$F.v
aCq ) hR
<..或者..> vy
<(1\
<3[,bTIk
<. i#uc
// 不带换行 ?!h
jI;_&
? "Hello, world!" ?"d25LyN
{hS9FdWA;
// 或者 -2{NIF^H
{z4v_[-2CF
// 带换行 yo#aX^v~y
?? 'Hello, world!' XIg GE)n
.> 0Y%u[i/
)}
I>"n
$IM}d"/9
OCaml q0Hor
let main () = 0gR!W3dh
print_endline "Hello world!";; 8"f Z>XQ
tp6-j`7u
Zj(2$9IU
Pascal |;G9K`8
program Hello; jp~C''Sj
begin #s 4v0auK
writeln('Hello, world!'); #- l1(m
end. +@U}gk;#c
zlUXp0W
n<}t\<LG^c
Perl Z{9
mZlIy
#!/usr/local/bin/perl h!vq~g
print "Hello, world!\n"; *8ZaG]L
,)S(SnCF
Kx-s95t
PHP E{Tvjh+
<?php _{eH"
,(
print("Hello, world!"); @v#]+9F
?> Uz;z
j4!g&F _y
&!kD81?Mm
Pike u%o2BLx
#!/usr/local/bin/pike _a~uIGN
int main() &<oZl.T
{ ([mC!d@a
write("Hello, world!\n"); 1>KZ1Kf
return 0; ODggGB` H`
} 0u3"$o'R
NZP>aV-
^}F @*A;o
PL/I }i)^?@
Test: procedure options(main); 4Jf6uhaE
declare My_String char(20) varying initialize('Hello, world!'); h#Z5vH
put skip list(My_String); .L#xX1qr
end Test; l8$7N=Y
bv%A;
*0*1.>Vg
Prolog CDNh9`
goal STr&"9c
write("hello,world!"). zKnHo:SV
c{qoASc?
x#-+//
Python L~WC9xguDl
#!/usr/local/bin/python a*qf\&Vb|
print "Hello, world!" Hn-k*Y/P
Po
,zTz
X;~3 U
9
REXX -0 e&>H%
say "Hello, world!" gbC!>LV
yY3Mv/R
l2AAEB_C.
Ruby e=8z,.Xk
#!/usr/bin/ruby &fyT}MA
print "Hello, world!\n" K}r@O"6*\
|i}5vT78
/]_a\x5Ss
Scheme ;RmL'
(display "Hello, world!")
x]6wiV
(newline) qoifzEc`U
|JR;E$
2tEA8F~k
sed (需要至少一行输入) ^:(:P9h
sed -ne '1s/.*/Hello, world!/p' b<1k$0J6
AUan^Om
%
T2C0P
Smalltalk UP8=V>T02
Transcript show: 'Hello, world!' 5D~>Ed;
|t1ij'N
A.5N<$l
SNOBOL w
b@Zna
OUTPUT = "Hello, world!" ]+OHxCj:
END XDot3)2`
"!fvEE
Qd{h3K^hlu
SQL TB8a#bK4
create table MESSAGE (TEXT char(15)); SEL7,8 Hm
insert into MESSAGE (TEXT) values ('Hello, world!'); bnm3
cR:h"
select TEXT from MESSAGE; lrE|>R
drop table MESSAGE; _YT9zG
e%B;8)7
"I7 Sed7
Tcl x}c%8dO#J
#!/usr/local/bin/tcl aS7%x>.A!
puts "Hello, world!" *<5zMSZO
Y!+q3`-%T
B(omD3jzN
TScript ;'|Mt)\
? "Hello, world!" uia[>&2
3hPj;-u
x'uxSeH$
Turing }gfs
put "Hello, world!" ~@v<B
I
?)60JWOJ1
#wvmVB. 5~
UNIX-style shell nVK`H@5fw
程序中的/bin/sh可改为您使用的shell t!u{sr{j=
nJ ZQRRa:C
#!/bin/sh ?eU=xO
echo 'Hello, world!' =$^<@-;
LHS^[}x^1
6{qI
GUI bM9:h
?puZqVu5
Delphi WN_i-A1G/h
program HelloWorld; J4xJGO
uses Y(`# J[
Dialogs; V&j
|St[
begin /=|5YxY
ShowMessage('Hello, World!'); %)|_&Rh
end. qM|-2Zl!+
cSkJlhwNn
ckZZ)lW`*
Nuva r2Wx31j{
<. }IRx$cKV
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) hZudVBn
.> ?
7H'#l
=N+Ou5D
EZz`pE
Visual Basic }EW@/; kC
MsgBox "Hello, world!" M<
T[%)v
'或者 rLy<3
Print "Hello, world!" 7n_'2qY
N@z+h
T9N&Nh7 3
Visual FoxPro Ao%;!(\I%
? "Hello, world!" IO(Y_7
RyxEZ7dC<y
~MgU"P>
X11 e/h2E dY
用一个程序
H/eyc`
bay7%[BLB
xmessage 'Hello, world!' f\Fk+)e@
:=<0Z1S
用C++和gtkmm 2 e2onR~Cf
j.5;0b_L^
#include <iostream> 9Xr @ll
#include <gtkmm/main.h> RZV8{
#include <gtkmm/button.h> d+6 by,'
#include <gtkmm/window.h> $c WO`\XM
using namespace std; ~(|~Ze>
2K8?S
class HelloWorld : public Gtk::Window o*L#S1yL
{ e-taBrl;
public: kH)JBx.
HelloWorld(); +>F #{b
virtual ~HelloWorld(); ,sM>{NK9R
protected: ,w+}Evp])
Gtk::Button m_button; $p}
/&
virtual void on_button_clicked(); WLb*\
}; #*g .hL<
`#m>3
HelloWorld::HelloWorld() : m_button("Hello, world!") zeXMi:X
{ ~4{E0om@
set_border_width(10); LGOeBEAMV^
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); T}?vp~./
add(m_button); w'Kc#2
m_button.show(); ddR_+B*H
} w84
]s%y
E
rf$WPA
HelloWorld::~HelloWorld() {} Cw=wU/)
dXe.
5XC
void HelloWorld::on_button_clicked() qlUw;{;p
{ 7jb{E+DrG
cout << "Hello, world!" << endl; &I[ITp6y0
} I3 %P_oW'
Qoj}]jve
int main (int argc, char *argv[]) 8Jz/'
{ a-`OE"
Gtk::Main kit(argc, argv); is3nLm(
HelloWorld helloworld; 4E Hb
Gtk::Main::run(helloworld); sH^?v0^a
} x bG'![OX
wGqQR)a
_t:l:x.;T
Java a=55bEn
import java.awt.*; '.@'^80iQ
import java.awt.event.*; 3b_tK^|'
n&. bs7N2
public class HelloFrame extends Frame T4W"!4[
{ jU#/yM"Y
HelloFrame(String title) doCWJ
{ [7gyF}*;
super(title); M!=WBw8Y]a
} JJvf!]
public void paint(Graphics g) gc'C"(TO(
{ 4{'0-7}
super.paint(g); ^ExA
java.awt.Insets ins = this.getInsets(); =jik33QV<
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); q4k)E
} /S]W<8d
public static void main(String args []) "EoC7
1
{ ;w(]z
HelloFrame fr = new HelloFrame("Hello"); + *YGsM`E9
BO5gwvyI
fr.addWindowListener( %j].'
;
new WindowAdapter() QK5y%bTSA
{ 728}K^7:
public void windowClosing(WindowEvent e) iA~b[20&
{ imx/hz!
System.exit( 0 ); eQk ~YA]K
} fwy-M:
} 8ycmvpJ
); {__Z\D2I
fr.setResizable(true); 1}E`K#
fr.setSize(500, 100); x8a?I T.
fr.setVisible(true); SL;\S74
} 0Fw0#eE
} Ozk^B{{o
o6pnTu
~Od4(
}/G
Java Applet Sx,O)
Java Applet用于HTML文件。 :E|HP#iwu
1i}Rc:
HTML代码: i<g|+}I
ObC
<HTML> <v?9:}
<HEAD> >4:W:;R
<TITLE>Hello World</TITLE> #vy:aq<bjE
</HEAD> "y>\
mC
<BODY> 5Wj+ey^^w
JM{S49Lx
HelloWorld Program says: *G^n<p$"
#@,39!;,:O
<APPLET CODE="HelloWorld.class" WIDTH=600 HEIGHT=100> 8Ek<J+&|I
</APPLET> #e.2m5T
6 ^X$;
</BODY> ;Ef:mr"Nu
</HTML> 2,nKbE9*
:&=TE 2
Java代码: D[)")xiG
&*
4uji
import java.applet.*; &XosDt
import java.awt.*; b#-5b%ON
pti`q)
public class HelloWorld extends Applet 9i)E<.6
{ LxkToO{
public void paint(Graphics g) 3,j)PKf
;
{ M/5e4b
g.drawString("Hello, world!", 100, 50); Q? a&