“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。 oF%^QT"R
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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》。 lSn5=^]q
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以下是用不同语言写成的Hello World程序的几个例子: lq>*x=<
Ada 457fT |
with Ada.Text_Io; use Ada.Text_Io; tXf}jU}
procedure Hello is 2j8Cv:{Nn%
begin vQ:x%=]
Put_Line ("Hello, world!"); 'v'`
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end Hello; xNC* ]8d
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汇编语言 F3r S6_
9USrgY6_
x86 CPU,DOS,TASM Rz.i/wg}
MODEL SMALL "t5
+*
IDEAL " 2ZI oa!^
STACK 100H u{g]gA8s
?JuX~{{.L
DATASEG ~8jThi
U
HW DB 'Hello, world!$' KH>Sc3p
`xISkW4 %
CODESEG 2-8YSHlh
MOV AX, @data !(W[!%
MOV DS, AX beJZpg
MOV DX, OFFSET HW nnfY$&3A
MOV AH, 09H v$t{o{3
INT 21H 2yl6~(JC+
MOV AX, 4C00H \#
7@a74
INT 21H >lA7*nn
END ?D1x;i9<
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gb]hOB7g
x86 CPU,GNU/Linux,NASM @kwLBAK}@
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). SW3wMPy&s
;Enter this into "hello.asm" then type: i Bi7|
;"nasm -f elf hello.asm" {udrT"h
;"ld hello.o -o hello" OfD@\;L
;"./hello" NOF?LV
|*%/ovg+
section .data ;data section declaration jZa25Z00
msg db 'Hello World!',0AH >oe4mW
len equ $-msg ;string length B1y<.1k
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section .text ;code section declaration TRSOO}
global _start ;entry point (start of execution) '/Cg*o/
_start: mov edx,len ;string length j'k8^*M6
mov ecx,msg ;string start L5R `w&Up
mov ebx,1 ;file handle: stdout f8^"E $"
mov eax,4 ;sys_write 40 Au9o
int 80h ;kernel system call /r>IV`n{
''_,S,.a20
mov ebx,0 ;return value 1pWk9Xuh
mov eax,1 ;sys_exit t G]N*%@
int 80h ;kernel system call d0'7efC+
HpW"lYW4
T48BRVX-F
x86 CPU,Windows,MASM32 F\;2i:(
.386 xy2\'kS`G
.model flat,stdcall {V.Wk
option casemap:none Z/xV\Ggx
;Include 文件定义 MO[c0n%
include windows.inc SrSG{/{
include user32.inc y= 2=DU
includelib user32.lib 5RW@_%C
include kernel32.inc s5Pq$<
includelib kernel32.lib b([:,T7
;数据段 y^9bfMA
.data j0AwL7
szCaption db 'A MessageBox!',0 VxNXd?
szText db 'Hello,world!',0 uH$oGY
;代码段 ]GcV0&|
.code kl| g
start: 3*G5F}7%=
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK {!lNL[x
invoke ExitProcess,NULL hl`u"?rg
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Xc{ZN1 4n
end start xne]Q(B>
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b~1iPaIh
AWK %WZ$]M?q
BEGIN { print "Hello, world!" } I[@ts!YD
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^Fn%K].X
BASIC Bu&So|@TL
传统版BASIC(例如GWBASIC): [Uswf3
S[Vtq^lU
10 PRINT "Hello, world!" |0lLl^zp
20 END kPW BDpzN
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或在提示符输入: p*Xix%#6
TFo}\B7
?"Hello, world!":END )GK+
!-7_ +v>
现代版BASIC(例如Quick BASIC): \]t]#D>0
5~QhX22
Print "Hello, world!" tbg*_ZQO u
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以下的语句在Quick BASIC中同样有效: xF&6e&nv
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? "Hello,world!" Cb4_ ?OR0
ka/nQ~_#<
[8.-(-/;
BCPL I4ebkP gf
GET "LIBHDR" 36nyu_h:R
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LET START () BE 7q!?1 -?8R
$( 5lGQ#r
WRITES ("Hello, world!*N") 7"#f!.E
$) d)\2U{
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uj)yk*
Befunge dbCNhbN(
"!dlrow olleH">v Oc#>QZ3
, ^}hJL7O'
^_@ z4bN)W )p
=)(0.E
C\OECVT
Brainfuck pp<E))&R
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< JwB"\&'1ZS
+++++++++++++++.>.+++.------.--------.>+.>. cu)U7
-A}zJBcR
"w9`cz9a~J
C YKY2Cw
#include <stdio.h> rmsQt
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Pi+3
int main(void) CG.,/]_
{ i@XB&;*c\
printf("Hello, world!\n"); f9a$$nb3`
return 0; >otJF3zw
} ?.Q3 pUT
iKhH ^V%j
*Z; r
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C++ HAd%k$Xu{
#include <iostream> d+0^u(gc!8
+mLD/gK`
int main() 7k'gt/#up
{ #~S>K3(
std::cout << "Hello, world!" << std::endl; 6Kp}_^|z
return 0; "b`7[ ;a
} Y[@0qc3UO
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Q(e{~
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C++/CLI O5M2`6|As
int main() D#ZPq,f
{ J0sGvj{
System::Console::WriteLine("Hello, world!"); YQYX,b
}
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C# (C Sharp) 0p `")/
class HelloWorldApp NV6G.x
{ _4v"")Xe
public static void Main() gHZqA_*T8U
{ O:IQ!mzV5
System.Console.WriteLine("Hello, world!"); AuXs B
} nE$
f
} j;+["mi
`BjR.xMv
j`9Qzi1
COBOL U<rI!!#9
IDENTIFICATION DIVISION. Pj&A=
PROGRAM-ID. HELLO-WORLD. IJ_ m
m]P/if7
ENVIRONMENT DIVISION. X$^JAZ09
6OtVaT=}<O
DATA DIVISION. {E~Xd
/tZ0
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PROCEDURE DIVISION. -?z\5z
DISPLAY "Hello, world!". QZ~0o7
STOP RUN. 03_pwB)^
Kp&3=e;vn{
W-m"@<Z
Common Lisp =k_UjwgN^
(format t "Hello world!~%") r^5jh1
\<V)-eB
En\Z#0,V
DOS批处理 8kH<$9
@echo off 3+V#[JBJv
echo "Hello, world!" `[Sl1saZ$S
$@.jZ_G
i?-Y
Eiffel F&az":
class HELLO_WORLD H%z/v|e6
PJK9704 6
creation *HeVACxo
make S3y246|4
feature ]2$x|#Gg}
make is O|e}
local #c:kCZt#
io:BASIC_IO E-SG8U;
do `tVy_/3(9
!!io ,v7Q *3
io.put_string("%N Hello, world!") 9.s,:?5e
end -- make l9J*um-
end -- class HELLO_WORLD ,Xtj;@~-
KUKI qAA
bo>E"<
Erlang EEwWucQ
-module(hello). c1#+Vse
-export([hello_world/0]). GHG,!C
p+ Lv=e)0u
hello_world() -> io:fwrite("Hello, World!\n"). 2*'ciH37
]0-<>
sLhDO'kM
Forth zJCEA
." Hello, world!" CR 3{RL \gh$"
1tGgDbJU
6$RpV'xz
Fortran !y[3]8Xxv
WRITE(*,10) u"Y]P*[k
10 FORMAT('Hello, World!') Q0>q:aj\
STOP fRNP#pi0u
END DFy1 bg
E1(1E?}!
!*vBW/
HTML r?3Aqi"
<HTML> N RSU+D-z
<HEAD> g>n0z5&TNF
<TITLE> Hello World! </TITLE> R=$Ls6z
</HEAD> GFL-.?
0
<BODY> T*+A.G@L"
<p>Hello World!</p> 7I
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</BODY> UA(;fZ@
</HTML> >>7aw" 0
mH\@QdF
rQj~[Y.c
HQ9+ e U;jP]FA
H GOVAb'
2w4MJ,Uw
%VJW@S>j/
INTERCAL u-.L^!k
PLEASE DO ,1 <- #13 i0ybJOa4
DO ,1 SUB #1 <- #238 Zi{0-m6+
DO ,1 SUB #2 <- #112 d)KF3oA
DO ,1 SUB #3 <- #112 E474l
DO ,1 SUB #4 <- #0 @O/,a7Tt
DO ,1 SUB #5 <- #64 R|Y~u* D
DO ,1 SUB #6 <- #238 &t_h'JX&
DO ,1 SUB #7 <- #26 JXm?2/
DO ,1 SUB #8 <- #248 1JeJxzv>C
DO ,1 SUB #9 <- #168 Dl A Z"C
DO ,1 SUB #10 <- #24 H[nz]s
DO ,1 SUB #11 <- #16 /s`;9)G]9
DO ,1 SUB #12 <- #158 Kv?;cu!
DO ,1 SUB #13 <- #52 H.~bD[gA
PLEASE READ OUT ,1 7cw]v"iv
PLEASE GIVE UP w1i?#!|
tIGs>, a=
plXG[1;&G
Java @T7PZB&xnl
public class Hello eP= j.$
{ ^:z7E1~
public static void main(String[] args) 5;Ia$lm=y
{ X9~p4ys9{
System.out.println("Hello, world!"); K7RKF$Z\
} |-61(X.
} }n[Bq#
38wq (
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JSP / O)6iJ
<% =v0~[E4
out.print("Hello, world!"); )!,@m>0v{
%> Z4@y?fv7s
o#}mkE87
yVYkuO
MIXAL Ja [#[BJ?
TERM EQU 19 the MIX console device number ]!aUT&
ORIG 1000 start address dz,+tR~
START OUT MSG(TERM) output data at address MSG jY+Do:#/wO
HLT halt execution <kbnu7?a*
MSG ALF "MIXAL" sam[s4@eQ
ALF " HELL" }`]]b+_b>@
ALF "O WOR" K~@`o-Z[
ALF "LD " VIg\]%qse
END START end of the program Yb9cW\lr
s41adw>
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Nuva fTgbF{?xh
<..直接输出..> mATH*[Y
Hello, world! Tk](eQsy.v
/.@x
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<..或者..> `oXg<tivU
UN(3i(d
<. 5M.Red.L
// 不带换行 pN+I]NgQ
? "Hello, world!" yxY
h?ka
'M-)Os"
// 或者 )Y[/!
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// 带换行 }5hZo%w[n
?? 'Hello, world!' 6>uQt:e
.> 453
}S
kQ[Jo%YT?E
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OCaml &Ea"hd
let main () = Gw`/.0
print_endline "Hello world!";; c_DaNEfaY
i'iO H|s
//tT8HX
Pascal #/s7\2
program Hello; NfqJ=9
begin Yx 3|G
writeln('Hello, world!'); /N%zwj/*
end. g/B\ObY
m{O
Dz:
MYu`c[$jZ
Perl ydyG}XI7V
#!/usr/local/bin/perl '}CN?f|.
print "Hello, world!\n"; 4v>o%
1VGpq-4*j
5Kee2s?*
PHP &t_A0z
<?php G g(NGT
print("Hello, world!"); yZ|+VXO
?> h,~tXj
bw020@O*
X&.:H~xS+
Pike Nuo^+z
E
#!/usr/local/bin/pike nfa_8
int main() {dBB{.hX
{ -EVs@:3]j
write("Hello, world!\n"); [bsXF#
return 0; #)FDl70S8
} 3jXR"@Z-
^?nP$+gq
3Qk/ Ll
PL/I *h:D|4oJ(
Test: procedure options(main); _TrZ'iL}T
declare My_String char(20) varying initialize('Hello, world!'); ;}UzJe ,S
put skip list(My_String); 'OG{*TDPu
end Test; D(!;V
KH
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}#&~w0P
Prolog o>.AdZby
goal 5`{=`
write("hello,world!"). e~3]/BL
40R"^*
\|blRm;
Python WFRsSp2
#!/usr/local/bin/python ~m!#FTc*
print "Hello, world!" :MK:TJV
1E8$% 6VV
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bp.N8
REXX (VfwLo>#
say "Hello, world!" &<`-:x1 2_
RXUA!=e
7,f:Qi@g
Ruby PBCb0[\
#!/usr/bin/ruby YXgWH'i~
print "Hello, world!\n" tc"T}huypU
)ni"qv~J
u
IAZo;
Scheme -!@H["
(display "Hello, world!") jiqi!*
(newline) 0h^uOA; c
vf6`s\6
5QKRI)XpZ
sed (需要至少一行输入) mlD%d!.
sed -ne '1s/.*/Hello, world!/p' 15o9CaQw4"
:DDO=
y:~eU
Smalltalk ,|6Y\L
Transcript show: 'Hello, world!' S> .q5
#,t2*tM
P`7ojXy
SNOBOL uijq@yo8-
OUTPUT = "Hello, world!" /g13X,.H
END *@CVYJ'<
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K#A
4A;[sm^f
SQL Yd[U
create table MESSAGE (TEXT char(15)); Rk}\)r\
insert into MESSAGE (TEXT) values ('Hello, world!'); iK ohuZr
select TEXT from MESSAGE; ]U_5\$
drop table MESSAGE; b*cW<vX}~
:b.3CL\.6
a:=q8Qy
Tcl $[)6H7!U)
#!/usr/local/bin/tcl v hRu`Yb
puts "Hello, world!" -)p@BtMS
>Dk1axZ!>/
f KFnCng
TScript ixIh
T
? "Hello, world!" , - QR
q
sv+.aW
@P*ylB}?Q
Turing ~o:rM/!Ba
put "Hello, world!" =s`XZkh
,?C|.5
;+TMx(
UNIX-style shell 7ESN!
程序中的/bin/sh可改为您使用的shell J>><o:~@
k}- "0>
#!/bin/sh mfj4`3:NV
echo 'Hello, world!' 1R5Yn(
s.|!Ti!]
xt?3_?1
GUI -kWO2
=9kj?
u~
Delphi ]\[m=0K
program HelloWorld; jn.R.}TT
uses @<hF.4,]
Dialogs; ;gZwQ6)i
begin 2b; rr
ShowMessage('Hello, World!'); KK@
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end. K4iI:
eKL]E!
3Cq6h;!#
Nuva ^RY n8I
<. lF0K=L
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) /p[|DJoM
.> b{Z^)u2X
AQE
eIFH
Y'tq m&}
Visual Basic 6"BtfQ")
MsgBox "Hello, world!" Q&oC]u(="&
'或者 5oVLv4Z9u
Print "Hello, world!" C4&U:y<ju
b7?U8/#'
MDMtOfe|
Visual FoxPro }v_p gatC
? "Hello, world!" szf"|k!
5W*7qD[m
O<}ep)mr
X11 ZC3tbhV
用一个程序 mle_*Gy8
r^?)F?n!
xmessage 'Hello, world!' aR`_h=a
EJWOXxU
用C++和gtkmm 2 v[0DE*p
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#include <iostream> kWzuz#
#include <gtkmm/main.h> jlYD~)
#include <gtkmm/button.h> FZ[@])B
#include <gtkmm/window.h> o?:;8]sr!
using namespace std; ;X?Ah
TYs+XJ'Xj
class HelloWorld : public Gtk::Window ]jHh7> D
{ BNAguAxWo
public: #E-
VW
HelloWorld(); k98< s
virtual ~HelloWorld(); $sA,$x:^xI
protected: 8[6ny=S`
Gtk::Button m_button; 7Vz[ji
virtual void on_button_clicked(); bBkm]
>
}; !^c:'I>~
o|R*POM
HelloWorld::HelloWorld() : m_button("Hello, world!") d$2@,
{ [VY8?y
set_border_width(10); &