“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。 y{]iwO;
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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》。 6
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以下是用不同语言写成的Hello World程序的几个例子: Hj^_Cp]@*
Ada y7WO:X&
with Ada.Text_Io; use Ada.Text_Io; Aq:1
procedure Hello is AQa;D2B$
begin hRKA,u/G
Put_Line ("Hello, world!"); ^E349c-|
end Hello; ^P
!}"
u AmDXqJ3
fkmN?CU{1%
汇编语言 8s#2Zv
ae`6hW2
x86 CPU,DOS,TASM M
h5>@-fEE
MODEL SMALL A9L
{c!|-
IDEAL ofIw7D*h
STACK 100H RNB ha&
C!Oz'~l
DATASEG B+8B<xZ
HW DB 'Hello, world!$' SWrP0Qjc
j`A 3N7;
CODESEG x\MzMQ#Bf
MOV AX, @data xgV(0H}Mf
MOV DS, AX 0.}WZAYy~
MOV DX, OFFSET HW !w}cKm
MOV AH, 09H l'0fRQc
INT 21H ^B`*4
MOV AX, 4C00H FyV)Nmc%t
INT 21H B8sc;Z.
END B %Vz -t
-AcVVK&
cgevP`*]
x86 CPU,GNU/Linux,NASM Y ~%9TC
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). _Nmc1azS
;Enter this into "hello.asm" then type: Iurb?
;"nasm -f elf hello.asm" 3(n+5~{e
;"ld hello.o -o hello" <1(j&U
;"./hello" =@EX!]=x
qkk!1W
section .data ;data section declaration ?z$^4u3
msg db 'Hello World!',0AH vjz*B$
len equ $-msg ;string length Gl@}b\TB
@0{vA\
section .text ;code section declaration =2rkaBFC
global _start ;entry point (start of execution) 1?}5.*j<
_start: mov edx,len ;string length 6)_svtg
mov ecx,msg ;string start ltH?Ew<]
mov ebx,1 ;file handle: stdout ?ot7_ vl
mov eax,4 ;sys_write 3!:?OUhx
int 80h ;kernel system call EiP#xjn?c
g4-UBDtYt
mov ebx,0 ;return value [x\?._>
mov eax,1 ;sys_exit ,KyG^;Riy
int 80h ;kernel system call :G\X
K.T.?ug;:
GjD^\d/
x86 CPU,Windows,MASM32 i
SD?y#
.386 )J<VDO:_YA
.model flat,stdcall (o5^@aDr
option casemap:none B
!}/4"
;Include 文件定义 \p%,g&^ x
include windows.inc @G&2Tbj[`
include user32.inc [zv@}@$
includelib user32.lib )EhRqX9
include kernel32.inc @j/|U04_Z
includelib kernel32.lib .Fe_Z)i>h
;数据段 [W#M(`}D
.data :3aZ_
szCaption db 'A MessageBox!',0 Q eZg l!
szText db 'Hello,world!',0 S_ELV#X
;代码段 \J0fr'(S
.code E[8R
)xC@
start: 2#hfBJg@
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK k=D}i\F8
invoke ExitProcess,NULL cU
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> W#@Mx
end start V9dJNt'Ui
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zD z"Dn9
AWK jM%8h$&E
BEGIN { print "Hello, world!" } %Xfy.v
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BASIC nQ5N\RAZ
传统版BASIC(例如GWBASIC): z 7
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J%mtlA
10 PRINT "Hello, world!" C1ZuDL)e
20 END r]<?,xx[
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或在提示符输入: 2C59fXfd
~(~
y=M
?"Hello, world!":END WPpS?
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现代版BASIC(例如Quick BASIC): cq#=Vb
&]_2tN=S$
Print "Hello, world!" lv=rL
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以下的语句在Quick BASIC中同样有效: 7(W"NF{r
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? "Hello,world!" r 1x2)
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A]_5O8<buW
BCPL G%#M17
GET "LIBHDR" 8`GN8F
&RL
j^A!
LET START () BE A/A;'9
$( XKQ\Ts2<k
WRITES ("Hello, world!*N") P'<D0
$) 31)eDs
_>=QZ`!r
'U/X<LCl
Befunge 'irHpN6n
"!dlrow olleH">v nKu)j3o`
, lVra&5
^_@ iR39lOr
N*NGC!p`N
yZyB.wT
Brainfuck oH>G3n|U^
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< _p^&]eQ+k#
+++++++++++++++.>.+++.------.--------.>+.>. agUdPl$e\
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C og)f?4
#include <stdio.h> U3OXO1
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int main(void) 55K(]%t
{ l1uv]t <
printf("Hello, world!\n"); $_orxu0W
return 0; OZn40"`
} l`(pV ;{W
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p
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C++ W%_Cda5,
#include <iostream> >V|KS(}s
y??^[ sB
int main() ^"!)p2=
{ ;9"6g=q
std::cout << "Hello, world!" << std::endl; Cj1nll8c
return 0; DR
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} 5ji#rIAhxh
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.h=H?Hr(V]
C++/CLI m#a1N
int main() =}wqo6Bn|
{ \VAm4
System::Console::WriteLine("Hello, world!"); ee\xj$,
} M'>8P6O
7rSads
*h4x`luJ
C# (C Sharp) S*w; $`Y
class HelloWorldApp >4iVVs
{ 9~ rYLR(v
public static void Main() /pYp,ak
{ %z"${ zw
System.Console.WriteLine("Hello, world!"); SsfHp
} +5xk6RP
} I6lWB(H!u
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R!y`p:O
C
COBOL ka?EXF:
IDENTIFICATION DIVISION. K bM1b
PROGRAM-ID. HELLO-WORLD. u.9syr
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ENVIRONMENT DIVISION. i=AQ1X\s
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DATA DIVISION. Su*f`~G];
6!$2nK+
PROCEDURE DIVISION. '8V>:dy>
DISPLAY "Hello, world!". -W'T3_
STOP RUN. cZl/8?dj}
linvK.Lf
}
3JOC!;;
Common Lisp bW?cb5C
(format t "Hello world!~%") &E0L 2gbI
Q1^kU0M }
v)s;
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DOS批处理 cVuT|b^
@echo off 9`Zwa_Tni
echo "Hello, world!" :>3/*"vx?G
r31)Ed$
'wd&O03&
Eiffel ~Hb2-V
class HELLO_WORLD t*(buAx
aM!%EaT
creation )m<CmYr2
make =)IV^6~b
feature Pt\GVWi_t
make is HMl
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local H}PZJf_E
io:BASIC_IO
lqZUU92;
do wHE1Jqpo
!!io eiJ~1HX)
io.put_string("%N Hello, world!") {jOV8SVL
end -- make GFfZ TA
end -- class HELLO_WORLD 3fd?xhWbN
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Erlang gH:+$FA
-module(hello). $q 9dkt
-export([hello_world/0]). $b`~K MO
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hello_world() -> io:fwrite("Hello, World!\n"). v&r\Z @%
~fY\;
'j'G4P_G
Forth ]CGH )4Pe
." Hello, world!" CR [iUy_ C=qp
N-YCOSUu
='Fh^]*5
Fortran "a=dx|
Z
WRITE(*,10) 6S&OE k
10 FORMAT('Hello, World!') e!oL!Zg
STOP ]*TW%mY
END xV>sc;PEb
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rq![a};~
HTML 'tn-o
<HTML> 3e ?J#;
<HEAD> g66x;2Q
<TITLE> Hello World! </TITLE> EWK?vs
</HEAD> Zr|z!S?aSC
<BODY> &h'NC%"v
<p>Hello World!</p> bT c^huP
</BODY> MwTouEGGgA
</HTML> $VnPs!a
.kp3<.
Kdr}7#c
HQ9+ sj8lvIY5
H dLtmG:II
b:(t22m#?
%6cbHH
INTERCAL bBgyLyg
PLEASE DO ,1 <- #13 {4YD_$4W
DO ,1 SUB #1 <- #238
4b
1a?
DO ,1 SUB #2 <- #112 "9O8#i<Nr
DO ,1 SUB #3 <- #112 >gf,8flgj
DO ,1 SUB #4 <- #0 V#TNv0&0
DO ,1 SUB #5 <- #64 Z7J4rTA
DO ,1 SUB #6 <- #238 I/)*pzt8
DO ,1 SUB #7 <- #26 Rv Uw,=
DO ,1 SUB #8 <- #248 Wp(Rw4j
DO ,1 SUB #9 <- #168 gPcOm
b
DO ,1 SUB #10 <- #24 Ws;X;7tS
DO ,1 SUB #11 <- #16 vpz l{
DO ,1 SUB #12 <- #158 +@qIDUiF3
DO ,1 SUB #13 <- #52 D8\9nHUD`
PLEASE READ OUT ,1 0;tu}]jnN
PLEASE GIVE UP >Y=qSg>Ik
$/"QYSF
_|wnmeL*
Java Eu2(#z 6eW
public class Hello 04#<qd&ob@
{ Tl L\&n.$
public static void main(String[] args) j|%>NB ):
{ 4azqH;i
System.out.println("Hello, world!"); lQ!(lPh
} sGO+O$J
} >oL| nwn
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=k##*%
JSP Z. ,pcnaQb
<% !dOpLUh l
out.print("Hello, world!"); x{9$4d
%> ,jdTe?[*^
c]A @'{7
zvR;Tl6]
MIXAL o,[Em<
TERM EQU 19 the MIX console device number ~mC>G 4y$a
ORIG 1000 start address Dn:1Mtj-
START OUT MSG(TERM) output data at address MSG z
LZHVvL3
HLT halt execution ? $.x%G+
MSG ALF "MIXAL" cf%aOHYI*
ALF " HELL" FXh*!%"*
ALF "O WOR" ZDx1v_xr
ALF "LD " g5lK&-yu]
END START end of the program l._g[qa
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BMItHn].
Nuva : $N43_Wb
<..直接输出..> mNKcaM?h
Hello, world! 58t~? 2E
gdkHaLL"
<..或者..> A@jBn6
#@m6ag.
<. 2hY"bpGW
// 不带换行 k_`YVsEYP
? "Hello, world!" qAi:F=> X
4"#F=f0
// 或者 CPcB17!
X3HJ3F;==
// 带换行 %J+k.UrM
?? 'Hello, world!' uvJmEBL:
.> V\=%u<f
#6mr'e1
xtK}XEhG!
OCaml 6\USeZh
let main () = <jqL4!<
print_endline "Hello world!";; 11RqP:zg
L'O=;C"f
zICAV -&
Pascal DaqlL
program Hello; 6W9lKD_i
begin /$^SiE+N
writeln('Hello, world!'); {v*X}`.h
end. zqxN/H]z
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Lw`}o` D
Perl *1h@Jb34
#!/usr/local/bin/perl 0u
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print "Hello, world!\n"; \_ MWZRMc5
y\R-=Am".
#r QT)n
PHP )kIjZ
<?php nPhREn!
print("Hello, world!"); *i V#_
?> FpZ5@
,15$$3z /E
zS'{F>w
Pike .&.L@CRH
#!/usr/local/bin/pike ;iz3Bf1o
int main() 83F]d+n
{ u.2^t:A
write("Hello, world!\n"); h<i.Z7F;tj
return 0; 2=$ F*B>9
} \O)u' Bu
2{S*$K[M
f!G%$?]
PL/I ;ZTh(_7
Test: procedure options(main); p1s|JI
declare My_String char(20) varying initialize('Hello, world!'); 'y7<!uo?
put skip list(My_String); ^_/gM[H.
end Test; YGhHIziI
eBqF@'DQ
3935cxT1U
Prolog } [OEtd{
goal H>wXQ5 ?W;
write("hello,world!"). R)Dh; XA
o<rbC <
U
!L)yI#i4C
Python )2J#pz?.
#!/usr/local/bin/python EUS^Gtc
print "Hello, world!" 1-Q>[Uz,
ceAefKdb
4"eeEs h
REXX hA+;eXy/
say "Hello, world!" :@S=0|:j
02C;
OT#foP
Ruby aZ}z/.b]
#!/usr/bin/ruby L08"8\
print "Hello, world!\n" n6{nx[%7N7
5;A=8bryU
;0}C2Cz'
Scheme 2ZKy7p0/
(display "Hello, world!") :-~x~ah-
(newline) 4Y d$RP
|UN#utw{^Y
(qDJgf4fgn
sed (需要至少一行输入) CFeAKjG
sed -ne '1s/.*/Hello, world!/p' N|w;wF!3
Rk}=SB-
Mm%b8#Fe!
Smalltalk ;V^ I>-fnm
Transcript show: 'Hello, world!' fa,;Sw
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`!.c_%m2
SNOBOL [yVcH3GcjI
OUTPUT = "Hello, world!" 'h 7n}
END :s|xa u=
6+Y@dJnPT
Ps~)l#gue
SQL bjFND]p?w
create table MESSAGE (TEXT char(15)); $B`bsJ
insert into MESSAGE (TEXT) values ('Hello, world!'); W |+&K0M
select TEXT from MESSAGE; SpZmwa #\
drop table MESSAGE; g$mqAz<
%Gm4,+8P3o
WiFZY*iu5
Tcl >k(AQW5?
#!/usr/local/bin/tcl y|YhDO
puts "Hello, world!" =GLMdhD]
s_76)7
>c.HH}O0W
TScript l6!a?C[2T
? "Hello, world!" r`C t/]c
XNkQ0o0
*'R2Lo<C
Turing >IHf5})R
put "Hello, world!" 0!`!I0
eb<'>a
g=s2t"&
UNIX-style shell 6/Z 8/PL
程序中的/bin/sh可改为您使用的shell ,@t#)HV
(ce"ED`1
#!/bin/sh v9Ez0 :)
echo 'Hello, world!' 0*o =JM]
'Y5=A!*@tf
62#8c~dL
GUI =4Wjb
;sd] IZ$#
Delphi YHr<`Q</
program HelloWorld; 5fK<DkB$>:
uses vo2 T P:
Dialogs; jce2lXMm
begin <(Ktf0'__
ShowMessage('Hello, World!'); V,:~FufM^
end. m ,TYF
ooT~R2u
BO;LK-V
Nuva x[2eA!NC
<. .?.Q[ic
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) |*zvaI(}
.> YQ5d!a.
[RHji47
YCNpJGM
Visual Basic XwdehyPhT2
MsgBox "Hello, world!" ys|};*
'或者 E)F"!56lV
Print "Hello, world!" If(IG]>`D
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~kPZh1n`
Visual FoxPro $-f(.S
? "Hello, world!" j~Ubpf
Mhg_z.Z
vm "dE4W=
X11 :@+@vM;gh
用一个程序 gnU##Km|
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xmessage 'Hello, world!'
q=cH ^`<.
,?s:s&4
用C++和gtkmm 2 >"+bL6#
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#include <iostream> TzK[:o
#include <gtkmm/main.h> h`/1JjP
#include <gtkmm/button.h> Toc="F`SW
#include <gtkmm/window.h> W>`#`u
using namespace std; 6o]X.plr
B!z5P"C(~
class HelloWorld : public Gtk::Window }4"T#
[n#
{ F#XzhDs
public:
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HelloWorld();
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virtual ~HelloWorld(); yS(tF`H[
protected: 00@y,V_]
Gtk::Button m_button; Tta+qjr
virtual void on_button_clicked(); @60/IE{-v
}; -m>ng
E~q
wmG[*a_H
HelloWorld::HelloWorld() : m_button("Hello, world!") x$aFJCL
{ /|{~GD +A&
set_border_width(10); Tof H=d
m_button.signal_clicked().connect(SigC::slot(*this, &HelloWorld::on_button_clicked)); "WHt9 yZ
add(m_button); Zw"K69A)
m_button.show(); yTL<S '
} C\p _
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HelloWorld::~HelloWorld() {} eLAhfG
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void HelloWorld::on_button_clicked() 8?&u5
{ .m\' |%
cout << "Hello, world!" << endl; ^{Y9!R*9U*
} 0|_d{/VK4
>R}p*=J
int main (int argc, char *argv[]) 9q!./)
{ 5A=FEg
Gtk::Main kit(argc, argv); ]QAMCu(>
HelloWorld helloworld; 9 ~$'?
Gtk::Main::run(helloworld); Gfn?1Kt{
} ?_7^MP>
itW~2#nJz
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Java Vtr5<:eEx
import java.awt.*;
S^4T#/
import java.awt.event.*; p/!P kKJ
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