“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。 fDp_W1yH
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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》。 MX6*waQ-<
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以下是用不同语言写成的Hello World程序的几个例子: B`<(qPD
Ada #*#4vMk<
with Ada.Text_Io; use Ada.Text_Io; +[`N|x<
procedure Hello is )mxY]W+
begin neJNMdv@T
Put_Line ("Hello, world!"); }q T @.
end Hello; Hkg^
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:2Qm*Y&_$V
汇编语言 `rW{zQYM
:+ @-F>Q
x86 CPU,DOS,TASM r0l ud&_9
MODEL SMALL Y}'C'PR
IDEAL i;*c|ma1>
STACK 100H zC!]bWsD
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DATASEG :Y(Yk5
HW DB 'Hello, world!$' `da6}Vqj:
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CODESEG (\.[pj%-O
MOV AX, @data lZV]Z3=p'0
MOV DS, AX e<YC=67n)
MOV DX, OFFSET HW +|r;t
MOV AH, 09H f(
hK>H
INT 21H fo&q/;l\
MOV AX, 4C00H !0c7nzjm
INT 21H .\X/o!xC
END zA9N<0[]o
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x86 CPU,GNU/Linux,NASM y.JAtsxD
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). `r'q(M
;Enter this into "hello.asm" then type: ~ YO')
;"nasm -f elf hello.asm" "v/^nH
;"ld hello.o -o hello" )FT~gl%
;"./hello" \% !]qv
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section .data ;data section declaration 'IFbD["r
msg db 'Hello World!',0AH q`E6hm
len equ $-msg ;string length 0aSN8
(' /S~
section .text ;code section declaration djqSW9
global _start ;entry point (start of execution) c%>t(ce`Tl
_start: mov edx,len ;string length a2vUZhkR
mov ecx,msg ;string start jWiZ!dtUZ
mov ebx,1 ;file handle: stdout ,;;M69c[
x
mov eax,4 ;sys_write H.XD8qi3W
int 80h ;kernel system call 6#7f^uIK
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mov ebx,0 ;return value /8Bh
mov eax,1 ;sys_exit jIv+=b#oT
int 80h ;kernel system call <tuh%k
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R}llj$?
x86 CPU,Windows,MASM32 #l2wF>0
.386 f,d @*E
.model flat,stdcall [ hm/B`t*e
option casemap:none `(H]aTLt ,
;Include 文件定义 hUSr1jlA
include windows.inc WTA0S}pT
include user32.inc wWY6DQQB
includelib user32.lib iBwl(,)?m2
include kernel32.inc l6Ze6X I
includelib kernel32.lib kR7IZo"q
;数据段 x%k4Lm
.data Ig"Krz
szCaption db 'A MessageBox!',0 RR{]^g51
szText db 'Hello,world!',0 63UAN0K%
;代码段 @]6)j&
.code ^TVy:5Ag
start: <5@+:7Dv
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 50rCW)[#
invoke ExitProcess,NULL kWjCSC>jA
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> J
[2;&-@
end start !-2nIY!
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BEGIN { print "Hello, world!" } lEQ63)Z
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BASIC '1~mnmiP
传统版BASIC(例如GWBASIC): 0fxA*]h
}/x `w
10 PRINT "Hello, world!" a^iefwsNc
20 END ]d_Id]Qa+
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或在提示符输入: Ik>sd@X*|
q-/A_5>!;f
?"Hello, world!":END tQ5gmj
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现代版BASIC(例如Quick BASIC): rs~RKTv-
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Print "Hello, world!" ~PHAC@pU
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以下的语句在Quick BASIC中同样有效: @bmu4!"d
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? "Hello,world!" !vr">@}K
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BCPL {{ R/:-6?@
GET "LIBHDR" *oY59Yf
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Y
LET START () BE t2BkQ8vr
$( bICi'`
WRITES ("Hello, world!*N") MkC25
$) W~.1f1)
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mdypZ 1f_
Befunge Y{1IRP?S
"!dlrow olleH">v JiDX|Q<c
, kFHq QsaG
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Brainfuck REW
*6:
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< {b<p~3%+Hc
+++++++++++++++.>.+++.------.--------.>+.>. 9TO
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C UN`-;!
#include <stdio.h> >9esZA^';
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int main(void) &~6Z)}
{ 1e'-rm
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printf("Hello, world!\n"); }bIEW ho
return 0; @0A0\2
} O1JGv8Nr
wS%I.
] \4-e2N`\
C++ +&O[}%W
#include <iostream> 5G_*T
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int main() Um9!<G=;
{ 4_&$isq
std::cout << "Hello, world!" << std::endl; #`:60#l
return 0; \'GX^0yK
} yT-m9$^v
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C++/CLI I=D`:u\H
int main() >
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{ jXGr{n
System::Console::WriteLine("Hello, world!"); BpDf4)|
} yh]#V"W3
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C# (C Sharp) *Mg=IEu-6[
class HelloWorldApp jzI\Q{[m'
{ ,`P,))
public static void Main() X
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{ }dAb}0XK.
System.Console.WriteLine("Hello, world!"); Zul]ekv
} EqUiC*u8{I
} "%A/bv\u
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COBOL M_T$\z;,
IDENTIFICATION DIVISION. "2'nLQ""q
PROGRAM-ID. HELLO-WORLD. [uc;M6o}?
W2%(a0p
ENVIRONMENT DIVISION. 5;>M&qmN
Z&s+*&TM
DATA DIVISION. [9z<*@$-
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PROCEDURE DIVISION. 4oT25VH
DISPLAY "Hello, world!". zXbTpm
STOP RUN. T d4 /3k
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uTbI\iq
Common Lisp ^-4mZXAy1|
(format t "Hello world!~%") AcrbR&cvG
Mq[;:
6 [a CjW
DOS批处理 ?j?{}Z
@echo off %a8'6^k
echo "Hello, world!" C(}9
b\UQ6V
fR5
NiH
Eiffel s]5wzbF O
class HELLO_WORLD @K4} cP
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creation x\3 ` W
make 89`AF1
feature _<pG}fmR
make is MZ=U}
&F
local }UXj|SY
io:BASIC_IO x@v,qF$K
do ;?=nr 5;q
!!io KT{<iz_
io.put_string("%N Hello, world!") RNRMw;cT
end -- make }s}b]v
end -- class HELLO_WORLD Lt@4F
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Erlang /'TzHO9_`
-module(hello). @r+ErFI
-export([hello_world/0]). P6i4Dr
KbMgatI/
hello_world() -> io:fwrite("Hello, World!\n").
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j:)
(`
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Forth >|6[uKrO
." Hello, world!" CR Y'Wj7P
ujmW {()
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Fortran c*~/[:}
WRITE(*,10) wh|[
"U('
10 FORMAT('Hello, World!') C0i: *1
STOP ?Sn$AS I
END lH:TE=|4
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7fI[yCh
HTML %lv2 ;-
<HTML> 6}C4 SZ
<HEAD> U+@yx>!
<TITLE> Hello World! </TITLE> 8Dhq_R'r
</HEAD> eJ'2CM6
<BODY> Jc`LUJT
<p>Hello World!</p> mC>7l7%
</BODY> 7Ar4:iNvX
</HTML> *:
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eK/[jxNO
HQ9+ =c-j4xna>
H JP!$uK{u
7<IrN\@U
y"e'Gg2
INTERCAL 1'c!9
PLEASE DO ,1 <- #13 {(D$Xb
DO ,1 SUB #1 <- #238 X]C-y,r[M
DO ,1 SUB #2 <- #112 kul&m|
DO ,1 SUB #3 <- #112 ~;UK/OZ
DO ,1 SUB #4 <- #0 lCWk)m8
DO ,1 SUB #5 <- #64 w gATfygr
DO ,1 SUB #6 <- #238 ^CZn<$
DO ,1 SUB #7 <- #26 ;?= ] ffa{
DO ,1 SUB #8 <- #248 iP|h] ;a+@
DO ,1 SUB #9 <- #168 Va(R*38k
DO ,1 SUB #10 <- #24 Xa[gDdbL
DO ,1 SUB #11 <- #16 nt "VH5
DO ,1 SUB #12 <- #158 %
eW>IN]5
DO ,1 SUB #13 <- #52 YXrTm[P
PLEASE READ OUT ,1 0x[vB5R
PLEASE GIVE UP t.lm`=
A[htG\A` 0
l=
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Java
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public class Hello "E/F{6NH
{ wF?THkdFo
public static void main(String[] args) 0@*rp7
{ 72~)bu
System.out.println("Hello, world!"); 4xtbP\=
} }k \a~<'X
} U>:CX
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`U2Z(9le
"* %=k%'
JSP cQ*:U@
<% jTSw 0\}
out.print("Hello, world!"); *ubLuC+b
%> lG%oqxJ+ L
`o/tpuI
<\X4_sdy
MIXAL 7S2Bm]fP
TERM EQU 19 the MIX console device number A3$
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ORIG 1000 start address $w+g%y)
START OUT MSG(TERM) output data at address MSG CWCE}WU>4
HLT halt execution g B+cU
MSG ALF "MIXAL" 8*>6+"w
ALF " HELL" RUX!(Xw
ALF "O WOR" ;op+~@*!
ALF "LD " qO&:J\d
END START end of the program pR`.8MMc8
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Nuva [rqq*_eB
<..直接输出..> lQi2ym?
Hello, world! -("79v>#
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<..或者..> | =N8X
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<. 0/{-X[z
// 不带换行
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? "Hello, world!" 5T8X2fS:
1tQZyHc42;
// 或者 kW6}57iV
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k
// 带换行 WAqR70{KM
?? 'Hello, world!' ;[gv-H
.> jpm}EOq<%
""CJlqU
I*6L`#j[
OCaml 9co
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let main () = [#3:CDT
print_endline "Hello world!";; HmbTV(lC
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8Nc i1o
Pascal ` mALx! `
program Hello; w
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begin wqA5GK>m2
writeln('Hello, world!'); )ckx&e
end. &[R&@l Y
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YA{Kgc^
Perl [OH>NpL
#!/usr/local/bin/perl {\C$Bz
print "Hello, world!\n"; /YUf('b
x9-K}s]%
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PHP if#$wm%
<?php -7m;rD4J
print("Hello, world!"); KGP2,U6
?> ScZ$&n
N;r,B
rd%3eR?V
Pike N|1J@"H
#!/usr/local/bin/pike
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int main() LP=!u~?
{ 0IQu6
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write("Hello, world!\n"); 5jx{O${u
return 0; OK3B6T5w=
} (873:"(
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PL/I n$#^gzU4
Test: procedure options(main); 3i35F.=X,
declare My_String char(20) varying initialize('Hello, world!'); ^]E| >~\
put skip list(My_String); /*rMveT
end Test; FCqs'
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Wd~}O<"
Prolog E%H,Hk^
goal g6
7* Bs
write("hello,world!"). 'Nfg%)-N
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I0Wn?Qq=@
Python Haq23K
#!/usr/local/bin/python t M A
print "Hello, world!" IQ2<Pinv
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P5] cEZ n
REXX *$ ^ME
say "Hello, world!" nU`vj`K
"thfd"-
szmjp{g0
Ruby kIXLB!L2b^
#!/usr/bin/ruby ;qG a|`#j
print "Hello, world!\n" -VRu^l#
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MKoN^(7
Scheme 9&rn3hmP
(display "Hello, world!") b-~`A;pr
(newline) :4(7W[r6
mUnnk`v
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~zsh
sed (需要至少一行输入) Ix1ec^?f
sed -ne '1s/.*/Hello, world!/p' Zh3]bg5
LNg[fF^:
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Smalltalk J
)@x:,o
Transcript show: 'Hello, world!' x%cKTpDh!
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4I {|M,+
SNOBOL QbOmJQ
OUTPUT = "Hello, world!" QD\S E
END )I!l:!Ij*D
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w
:^b3@gd
SQL }=XL^a|V
create table MESSAGE (TEXT char(15)); }o)GBWqHR
insert into MESSAGE (TEXT) values ('Hello, world!'); (qohb0
select TEXT from MESSAGE; #n~/~*:i92
drop table MESSAGE; #;?z<
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ckhW?T>l
Tcl {wA@5+[
#!/usr/local/bin/tcl ;'=!Fv
puts "Hello, world!" K})j5CJ/
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/\#qz.c2K
TScript N;Hf7K
? "Hello, world!" 1*>a
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hQ<"
Turing w9.r`_-
put "Hello, world!" Zu~ #d)l3N
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';b/D
UNIX-style shell <7^_M*F9
程序中的/bin/sh可改为您使用的shell (sr_&7A
/l:3*u
#!/bin/sh PPE:@!u<
echo 'Hello, world!' RJBNY;0
>@ge[MuS
1j0yON
GUI yKfRwO[j
;=UrIA@y;=
Delphi I?F^c6M=
program HelloWorld; 3~Ipcr
B
uses %li'j|
Dialogs; <([o4%
begin 7/aJ?:gX
ShowMessage('Hello, World!'); q;B-np?U
end. '1.T-.4>&
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Nuva O a-ZeCq
<. 9"MC<
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) E;-R<X5n
.> ^dqyX(
"d.qmM
! daXF&q
Visual Basic NG S/lKz
MsgBox "Hello, world!" %) q5hB
'或者 b/O~f8t
Print "Hello, world!" ;Iv)J|*
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,ci
tzh
Visual FoxPro JrCm >0g
? "Hello, world!" Fz>J7(Y.j
fkk\Q>J9!=
$!KV]]
X11 T4\,b
用一个程序 trgj]|?M
DSET!F;PG
xmessage 'Hello, world!' Kw-E%7gh4c
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用C++和gtkmm 2 EJZl'CR
.
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#include <iostream> S ._9
#include <gtkmm/main.h> c9f~^}jNb
#include <gtkmm/button.h> $&lS7}
#include <gtkmm/window.h> h'kgL~+$
using namespace std; #^Sd r-
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class HelloWorld : public Gtk::Window +s_@964
{ r 97 VX>
public: C=9|K`g5 R
HelloWorld(); ~} wPiu,
virtual ~HelloWorld(); *qKwu?]?>
protected: G9}[g)R*
Gtk::Button m_button; /r}t
virtual void on_button_clicked(); E!3W_:Bs
}; -
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HelloWorld::HelloWorld() : m_button("Hello, world!") a.c2ScXG
{ (x?A#o>%
set_border_width(10); \JN<