“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。 5yf`3vV|3@
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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》。 @e+qe9A|
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以下是用不同语言写成的Hello World程序的几个例子: :!fU+2$`^(
Ada W\O.[7JP
with Ada.Text_Io; use Ada.Text_Io; *7C l1o
procedure Hello is bK|nxL
begin uP1]EA
Put_Line ("Hello, world!"); `)M&^Z=D
end Hello; ]E1|^[y
-uB*E1|Q
ES5a`"H
汇编语言 :V# B]:Z9
%Z yt;p2
x86 CPU,DOS,TASM jtPHk*>^wu
MODEL SMALL q^b12@.
IDEAL vZIx>
STACK 100H :~~\{fm
=9A!5
DATASEG 4qyPjAG
HW DB 'Hello, world!$' *!,k`=.([#
lht :%Ts$
CODESEG `91?^T;\F
MOV AX, @data l(~NpT{=V
MOV DS, AX z[0t%]7l
MOV DX, OFFSET HW ($[@'?Z1
MOV AH, 09H _:G>bU/^
INT 21H Yz>8 Nn '_
MOV AX, 4C00H ZU5; w
INT 21H 8[IR;gZf
END gO bP
)Nl xW5
WU6F-{M"?
x86 CPU,GNU/Linux,NASM TWU1@5?Ct
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Kj+TPqXb
;Enter this into "hello.asm" then type: oi%IHX(`
;"nasm -f elf hello.asm" xgWVxX^)
;"ld hello.o -o hello" D}?JX5.
;"./hello" wArzMt}[
'^BTa6W}m
section .data ;data section declaration _j]vR
msg db 'Hello World!',0AH _+qtH< F/
len equ $-msg ;string length 2MDY nMy
`%=!_|
section .text ;code section declaration ];Y tw6A
global _start ;entry point (start of execution) V.w!]{xm
_start: mov edx,len ;string length |L6 +e*
mov ecx,msg ;string start VpB+|%@p
mov ebx,1 ;file handle: stdout *m&(h@l
mov eax,4 ;sys_write jk5C2dy
int 80h ;kernel system call $wqi^q*)
m[A$Sp_"-h
mov ebx,0 ;return value ,sn
9&E
mov eax,1 ;sys_exit ZV`o:Gd
int 80h ;kernel system call I_na^sh*
^/7Y3n!|3
a7e.Z9k!
x86 CPU,Windows,MASM32 NJ(H$tB@
.386 YF13&E2`\
.model flat,stdcall CjU?3Ag
option casemap:none oTf^-29d
;Include 文件定义 |]OI)w*
include windows.inc ,h'omU7
include user32.inc vVH*\&H\T
includelib user32.lib 7@ mP;K0
include kernel32.inc rv%^2h<&
includelib kernel32.lib ]dnB,
;数据段 I(+%`{Wv
.data 3E;<aCG?
szCaption db 'A MessageBox!',0 %F] :nk`
szText db 'Hello,world!',0 g#[,4o;
;代码段 0vcFX)]yW
.code Wp//SV
start: \PK}4<x}
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK u=sZFr@m[
invoke ExitProcess,NULL 6"La`}B(T8
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 4z,n:>oH
end start +qmV|$rmM
j.UO>1{7
./}W3
AWK mA6Nmq%{ F
BEGIN { print "Hello, world!" } incUa;
ASaNac-3
tN&X1
BASIC ;h7O_|<%
传统版BASIC(例如GWBASIC): E^t}p[s
!{ /AJb
10 PRINT "Hello, world!" G4)X~.Fy
20 END \yY2 mr
r'& 6P-Vm
或在提示符输入: P>ZIP*
Gr
>Q|S#(c
?"Hello, world!":END jR{Rd}QtQ
]D|Hq4ug
现代版BASIC(例如Quick BASIC): N"2P]Zr
x: 2 o$+v3
Print "Hello, world!" `6y\.6j
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以下的语句在Quick BASIC中同样有效: xMo'SpVz:
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? "Hello,world!" B0:/7Ld$Ml
%o#|zaK
u$mp%d8
BCPL *x&y24
GET "LIBHDR" G0v<`/|>}
go5l<:9
LET START () BE BY??X=
$( n;*W#c
WRITES ("Hello, world!*N") 3+iQct[
$) S$i3/t
,98`tB0
x-@6U
Befunge ZVz`-hB
"!dlrow olleH">v f}+8m .g2
, D2Dk7//82Y
^_@ G:{\-R'
r#/Bz5Jb*
C07 U.nzh
Brainfuck ftbOvG/
I
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< (Kaunp5_`
+++++++++++++++.>.+++.------.--------.>+.>. K"9V8x3Wg
y`-5/4
CFiO+p&
C I07_o"3>qr
#include <stdio.h> )`
90*
S s#UX_DT_
int main(void) IT\
x0b cv
{ O_y?5 3X
printf("Hello, world!\n"); w1
tg7^(@
return 0; Q)}z$h55
} 5tl uS
HDT-f9%}<4
D^\2a;[AxA
C++ 2V =bE-
#include <iostream> "3:TrM$|A
$7bux1L
int main() f)!7/+9>
{ %R LGO&
std::cout << "Hello, world!" << std::endl; f2RIOL,
return 0; o:Q.XWa@MG
} jd?NN:7
{-)*.l=
x>~.cey
C++/CLI Q1?0]5
int main() nwPU{4#l<
{ UvM_~qo
System::Console::WriteLine("Hello, world!"); dLy-J1h\
} {]dH+J7
nW`EBs
TGu]6NzyZ
C# (C Sharp) <Z8^.t)|
class HelloWorldApp ]*JH~.p
{ 7.tEi}O&_g
public static void Main() gVI2{\a
{ d]w%zo,yr
System.Console.WriteLine("Hello, world!"); :pPn)j$
} ~TfQuIvQB
} X3,+aL`
Ld3!2g2y7&
"4e{Cq
COBOL OFcqouGE
IDENTIFICATION DIVISION. rLOdQN
PROGRAM-ID. HELLO-WORLD. (w{C*iB
+2S#3m?1
ENVIRONMENT DIVISION. )90K^$93"
R
SqO$~
DATA DIVISION. 'or8CGr^p
!`EhVV8u-_
PROCEDURE DIVISION.
C#4/~+
DISPLAY "Hello, world!". caC(KK#<
STOP RUN. O\KSPy7YQ
~7Jj\@68
#Ez+1
Common Lisp f!aE/e\
(format t "Hello world!~%") Qv>rww]
IYk^eG:;
K5SP8<.
DOS批处理 ?^H1X-;
@echo off Jdp@3mP
echo "Hello, world!" H{nYZOf/
UAq%Y8KA
}g|)+V\A
Eiffel J}J7A5P
class HELLO_WORLD p7kH"j{xD
u }~%9Pi
creation +qzCy/_gd
make Yl$Cj>FG
feature Du."O]syD
make is !wZ9P
local W:z!fh-
io:BASIC_IO #8[iqvE
do J,=:
]t
!!io bD;c>5t
io.put_string("%N Hello, world!") OlF5~VAbfb
end -- make v9R"dc]0h
end -- class HELLO_WORLD [#-!&>
0[T>UEI?
WbP*kV{
Erlang nfbq J
-module(hello). c/\$AJV.H
-export([hello_world/0]). #\)tz z
yL>wCD,L
hello_world() -> io:fwrite("Hello, World!\n"). t=Um@;wh
,t=12R]>
I_h{n{,sr
Forth 81<0B@E
." Hello, world!" CR Z2x%
:u$+lq
XTOZ]H*^
Fortran x3++JG
WRITE(*,10) ';0NWFP
10 FORMAT('Hello, World!') +)gXU Vwd
STOP gYy9N=f+
END /P3s.-sL
Pqm)OZE?
&`J?`l X
HTML p>@S61
&
[
<HTML> `bF]O"
<HEAD> Y?>us
<TITLE> Hello World! </TITLE> A,)G$yT\
</HEAD> ]
336FgT
<BODY> "Nn+Zw43
<p>Hello World!</p> bG6<=^
</BODY> +$x;FT&
</HTML> w>W`8P_b@
T|&2!Sh
4:
<=%d
HQ9+ :<$IGzw}.
H X&qa3C})
a|v}L,
}lzQMT
INTERCAL K9J"Q4pEC
PLEASE DO ,1 <- #13 fx783
DO ,1 SUB #1 <- #238 k-LT'>CWl
DO ,1 SUB #2 <- #112 M"t=0[0DM:
DO ,1 SUB #3 <- #112 yU@~UCmja
DO ,1 SUB #4 <- #0 ^QKL}xiV:
DO ,1 SUB #5 <- #64 &MlBpI
DO ,1 SUB #6 <- #238 <.h\%&'U
DO ,1 SUB #7 <- #26 A'\jaB
DO ,1 SUB #8 <- #248 8uO@S*)0
DO ,1 SUB #9 <- #168 qWzzUM1=
DO ,1 SUB #10 <- #24 l^IPN'O@
DO ,1 SUB #11 <- #16 {vJ)!'Eh
DO ,1 SUB #12 <- #158 _>moza
DO ,1 SUB #13 <- #52 Q#i^<WUpg
PLEASE READ OUT ,1 _ x.D< n=X
PLEASE GIVE UP g}-Ch#
P"g
Y|}|
CY4_=
Java |= frsf~?
public class Hello R;XR?59:.
{ dLSnhZ
public static void main(String[] args) ffQ%GV_
{ BU="BB/[
System.out.println("Hello, world!"); yq?_#r
} _0rHxh7}q
} $VrKoL\ScA
P9p{j1*;
g1uqsqYt
JSP '1}rQq Z
<% A!kNqJ2
out.print("Hello, world!"); YORFq9a{R
%> Rro{A+[,X
yt&eY6Xp
QS~;C&1Hl
MIXAL $<UX/a\sH
TERM EQU 19 the MIX console device number @x@w<e%
ORIG 1000 start address PSdH9ea
START OUT MSG(TERM) output data at address MSG JL9d&7-
HLT halt execution lbES9o5
MSG ALF "MIXAL" O^]I>A#d
ALF " HELL" 8dw]i1t<
ALF "O WOR" :8_`T$8i4
ALF "LD " {tE/Jv $
END START end of the program %(-YOTDr
-%=StWdb
i;0`d0^
Nuva ,<lxq<1I
<..直接输出..> OU(z};Is6Z
Hello, world! ?CS
jn
?;,Al`/^
<..或者..> '^l/e: (H3
]k mOX
<. gkpNT)
// 不带换行 wYf=(w\c
? "Hello, world!" ]
%*970
H&L=WF+x
// 或者 vtFA#})~
oT5xe[{yj
// 带换行 Ss u{Lj
?? 'Hello, world!' TKc&yAK
.> ED/-,>[f
Ar sMqb
34C
^vBp
OCaml LIH>IpamN
let main () = J1<fE(X
print_endline "Hello world!";; JXeqVKF
YF{K9M!
-aNTFt~|[
Pascal 9ok|]d P
program Hello; R7KQ-+Zb
begin (Df<QC`0v
writeln('Hello, world!'); bq4H4?j
end. K74oRKv
GtO5,d_
!9"R4~4
Perl {I 7pk6Qd
#!/usr/local/bin/perl P:k(=CzZ@J
print "Hello, world!\n"; `OQ&u
{NK>9phoB
;_i0@@J
PHP Jb-wvNJu
<?php x=B+FIJ
print("Hello, world!"); )
Q=G&
?> <nsl`C~6g0
,;d9uG2
ygfqP
Pike Y!7P>?)`,X
#!/usr/local/bin/pike 5ZKnxEW,(
int main() E+1j3Q;
{ ONGe/CEXT
write("Hello, world!\n"); \7j)^
return 0; }\0"gM
} *i?qOv/=>
?*s!&-KI
_@OYC<
PL/I yX~[yH+Pn
Test: procedure options(main); m~U{ V9;*
declare My_String char(20) varying initialize('Hello, world!'); F>b6fUtR
put skip list(My_String); Uqpvj90sw
end Test; 0&nF Vsz
654%X(:q
;Z`)*TRp4
Prolog kTk?[BK
goal .-|O "H$
write("hello,world!"). a,4g`?
V]O
:;(W_
hrL<jcv|
Python xqtjtH9X
#!/usr/local/bin/python 5->PDp
print "Hello, world!" OX`n`+^D
jF;4
8g@^
OWjZ)f/
REXX ~JNuy"8
say "Hello, world!" `?@7 KEl>
\;6F-0
&rd(q'Vi
Ruby I>5@s;
#!/usr/bin/ruby $ B9=v
print "Hello, world!\n" =@w:
0@Ijk(|
|d 3agfS[n
Scheme *Z:PB%d5
(display "Hello, world!") (>K$gAQH
(newline) L&N"&\K2U
qC4-J)8Wk
jwq"B$ap
sed (需要至少一行输入) HxM sH5;
sed -ne '1s/.*/Hello, world!/p' 0l=}v%D
EC~t'v
;9PM?Iy[
Smalltalk R,\
r{@yrz
Transcript show: 'Hello, world!' 0c5_L6_z
O%&@WrFq
dvD<>{U,8
SNOBOL LbR-uc?x
OUTPUT = "Hello, world!" A7C+&I!L
END u =kSs
:*@|"4
*$(CiyF!
SQL @(c<av?
create table MESSAGE (TEXT char(15)); @S7=6RKa[
insert into MESSAGE (TEXT) values ('Hello, world!'); H040-Q;S'
select TEXT from MESSAGE; :
xZC7"
drop table MESSAGE; aELT"b,x
h!K2F~i{P
['emP1g~
Tcl %h"<
IA
S.
#!/usr/local/bin/tcl ({KAh?
puts "Hello, world!" txo?k/w
vB5iG|b}
+&,\ J9'B
TScript PAwg&._K
? "Hello, world!" [T]qm7
?
O{#Cddt:r
#U52\3G
Turing X-$td~r
put "Hello, world!" )6E*Qz
A9UaLSe
!>y}Xq{bm3
UNIX-style shell hZWK5KwT
程序中的/bin/sh可改为您使用的shell !otq
X-
e K1m(E.=
#!/bin/sh j' KobyX<
echo 'Hello, world!' K4/P(*r`
DG*o
w^
@Q\$dneY
GUI zXPJ;^Xxa
!VX_'GyK
Delphi G=!bM(]R~
program HelloWorld; ;9p5YxD
uses |akC
Dialogs; (l8r>V
begin &IEBZB\/+&
ShowMessage('Hello, World!'); @\`G & VB
end. q4GW=@eD
DgT.Lku?
$;i$k2n:
Nuva 60%~+oHi~
<. Usf"K*A
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) dh;Mp E
.> 0 ,Qj:
y?z _^ppj
gVA}?t;
Visual Basic tD7C7m
MsgBox "Hello, world!" 8^/Ek<Qb|
'或者 O;BMwg_7
Print "Hello, world!" VgsCwJ9w
2<o[@w
[G[{l$E it
Visual FoxPro O|OSE
? "Hello, world!" W3{<e"
?fa,[r|G
N7$DRG/<b
X11 `k{ ff
用一个程序 o(X90X
@@{_[ir
xmessage 'Hello, world!' vgQhdtt
kk_9G-M
用C++和gtkmm 2 G9'YgW+$7
?V5Pt s
#include <iostream> vi! r8k
#include <gtkmm/main.h> w] 5U
#include <gtkmm/button.h> 8~s-t
#include <gtkmm/window.h> =O3I[
using namespace std; MY?O/,6
i5E:FS^!I
class HelloWorld : public Gtk::Window }Cmj (k`~
{ |+;K hC
public: 'tV"^KQHI
HelloWorld(); dJQ }{,+6
virtual ~HelloWorld(); ]IHD:!Z-=
protected: +NLQYuN
Gtk::Button m_button; ^{fi^lL=
virtual void on_button_clicked(); 4-d99|mv
}; ;!0.Kk
4
g=oeS%>E
HelloWorld::HelloWorld() : m_button("Hello, world!") 76IALJ00V
{ yNqm]H3<MP
set_border_width(10); !|Xl 8lV`
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); :L [YmZ
add(m_button); iJdrY6qd
m_button.show(); k}I5x1>&
} j h1 bn
Y @XkqvX
HelloWorld::~HelloWorld() {} B{OW}D$P#
#!8^!}nFO
void HelloWorld::on_button_clicked() "5o;z@(
{ RFZU}.*K$
cout << "Hello, world!" << endl; \N`fWh8&
} MAwC\7n+X
9*-pden
l
int main (int argc, char *argv[]) M\\e e3Ih
{ +
4V1>e+
Gtk::Main kit(argc, argv); =qV4Sje|q
HelloWorld helloworld; Wk\mgGn+
Gtk::Main::run(helloworld); `Ct'/h{
} ;<bj{#mMv
"o^bN 9=
nl)_`8=
Java "q9~C
import java.awt.*; >YJ8u{Z{o
import java.awt.event.*; BGlGpl
zqekkR]
public class HelloFrame extends Frame ]ZR{D7.?
{ P<cMP)+K
HelloFrame(String title) -!'Oy%a#
{ V_ +}^
super(title); F.~n
} Eu`2w%qz
public void paint(Graphics g) cS"f
{ w|!YoMk+o
super.paint(g); nV!2Dfd
java.awt.Insets ins = this.getInsets(); Xk{!' 0
g.drawString("Hello, World!", ins.left + 25, ins.top + 25); Z-^uM`],G
} ]+}ZfHp
public static void main(String args []) ]~j_N^oZ1X
{ pr62:
HelloFrame fr = new HelloFrame("Hello"); J<