“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。 .b|!FWHNS
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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》。 qFE(H1hy
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以下是用不同语言写成的Hello World程序的几个例子: m)ENj6A>yP
Ada bH}?DMq]O
with Ada.Text_Io; use Ada.Text_Io; K''2Jfm
procedure Hello is -uei nd]
begin 4?33t] "
Put_Line ("Hello, world!"); {k uC+~R
end Hello; G-[.BWQ
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汇编语言 \C kb:
PI&@/+
x86 CPU,DOS,TASM HhB&vi
MODEL SMALL 9Pql\]9"o
IDEAL a v"dJm
STACK 100H UO(?EELm
Gt$PBlq0
DATASEG .#{m1mr
HW DB 'Hello, world!$' 3Ct)5J
?wVq5^ e
CODESEG PouWRGS_
MOV AX, @data | Zj=E$
MOV DS, AX QV>hQ]L
MOV DX, OFFSET HW ~COd(,ul
MOV AH, 09H bL2b^UB~%
INT 21H L=&dJpyfT
MOV AX, 4C00H &?*H`5#?G
INT 21H oAF#bj_f
END J\E?rT
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cH`ziZ<&m1
x86 CPU,GNU/Linux,NASM lZJbQ=K{
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 8Z>=sUMQ
;Enter this into "hello.asm" then type: 7g.3)1
;"nasm -f elf hello.asm" nEgYypwr
;"ld hello.o -o hello" lpnPd{kE
;"./hello" Z$y~:bz
_ykT(`.#
section .data ;data section declaration h|N!U/(U
msg db 'Hello World!',0AH \<%?=C'w~
len equ $-msg ;string length "H|hN
Lnc>O'<5P9
section .text ;code section declaration |W*i'E
global _start ;entry point (start of execution) H'?dsc
_start: mov edx,len ;string length LLPbZ9q
mov ecx,msg ;string start }{F1Cr
mov ebx,1 ;file handle: stdout #;hYJ Y
mov eax,4 ;sys_write O0QK `F/)*
int 80h ;kernel system call _)MbvF
o{OY1 ;=6
mov ebx,0 ;return value eT@,QA(3
mov eax,1 ;sys_exit ~y>N JM>1
int 80h ;kernel system call B`?5G\7L
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x86 CPU,Windows,MASM32
K2D,
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.386 Rz"gPU4;`
.model flat,stdcall f5,!,]XO
option casemap:none 6XI$ o,{
;Include 文件定义 %<h+_(\h
include windows.inc c52S2f7
include user32.inc c;7`]}fGu
includelib user32.lib VH6J
@m
include kernel32.inc N _|tw
includelib kernel32.lib Bn5$TiTcl
;数据段 d[y(u<Vl
.data 4_d'Uh&]
szCaption db 'A MessageBox!',0 cc:,,T/i
szText db 'Hello,world!',0 F~x>\?iN
;代码段 VP_S[+Zv~
.code HBcL1wfS
start: !1xX)XD4y
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK ,o sM|!,
invoke ExitProcess,NULL W6jdS;3
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> |WsB0R
end start Kq;s${ |G
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BEGIN { print "Hello, world!" } s'=w/os
zA*I=3E(
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BASIC !EB[Lutm
传统版BASIC(例如GWBASIC): >rid3~
@<C<rB8R
10 PRINT "Hello, world!" j S<."a/n
20 END ~'#,*kA:6
I3d!!L2ma
或在提示符输入: aW(Hn[}^
# GOL%2X
?"Hello, world!":END Q[MWzsx
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现代版BASIC(例如Quick BASIC): @y(<4kLz
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Print "Hello, world!" "RLv{D<)J,
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以下的语句在Quick BASIC中同样有效: ;Miag'7
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? "Hello,world!" ;P9cjfSn
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BCPL 1)hO!%
GET "LIBHDR" NM4b]>
f8S! FGiNc
LET START () BE dT'd C
$( -d_7 q
WRITES ("Hello, world!*N") J4#rOS
$) &sg~owz
;3Z6K5z*f
!dGSZ|YZ
Befunge $u%7]]Y^\
"!dlrow olleH">v dZ`c
, R?iC"s!
^_@ #H.DnW
T&+y~c[au
%![3?|8~
Brainfuck D|D)782
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< RiiwsnjC
+++++++++++++++.>.+++.------.--------.>+.>. 'w?}~D.y
tA{hx-
^=[b]*V
C /&+*X)#v
#include <stdio.h> x &*2R#Ai
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int main(void) SaFNPnk=
{ Sy"!Q%+|
printf("Hello, world!\n"); { a_&L
return 0; EZ[e
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} krRnE7\m
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C++ x{S2
#include <iostream> {T 3~js
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int main() (};/,t1#$
{ _Zus4&'
std::cout << "Hello, world!" << std::endl; =g?k`vp
return 0; tk+4noA
} \"b'Z2g
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C++/CLI w,LB
int main() V0xO:7G^
{ ])?[9c
System::Console::WriteLine("Hello, world!"); V!QC.D<
} 3-BC4y/
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C# (C Sharp) ]>[0DX]j
class HelloWorldApp fa!8+kfi
{ &3:<WU:U
public static void Main() V^_U=Ed@M
{ zA|)9Dq
System.Console.WriteLine("Hello, world!"); 0B"_St}3D
} 1V-si bE
} Dlz1"|SF
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Y)7\h:LIg
COBOL sU/vXweky"
IDENTIFICATION DIVISION. XoGOY|2`6
PROGRAM-ID. HELLO-WORLD. fvj
B^/(wHBp
ENVIRONMENT DIVISION. Wz;@Rl|F
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DATA DIVISION. >]kZ2gVt
w@H@[x
PROCEDURE DIVISION. !{vZvy"
DISPLAY "Hello, world!". PNH>LT^
STOP RUN. 6E9o*YSk
dv?t;D@p!
qoEZ>
Common Lisp ps33&
(format t "Hello world!~%") 9Dd`x7$a
*vT Abk$
z&z5EtFUTh
DOS批处理 2\CZ"a#[
@echo off (&M,rW~Qxs
echo "Hello, world!" jWso'K
8:K_S a%
'N`x@(
Eiffel Z8Tb43?
class HELLO_WORLD 0Z{u;FI
q NUd "%S
creation $g\p)- aU
make +pe\9F
feature +ZkJ{r0,(
make is H%ScrJ#V
local _~;K]
io:BASIC_IO 4@0Z<8Mo
do B[5<&
!!io df/7u}>9
io.put_string("%N Hello, world!") 7wHd*{^9N
end -- make a..LbQQ
end -- class HELLO_WORLD qR
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Erlang D8`SI21P
-module(hello). 0CI\Yd=
-export([hello_world/0]). .f|)od[
7?8+h
hello_world() -> io:fwrite("Hello, World!\n"). dwb ^z+
fsWPU]\)
'fZ\uMdTx
Forth Ob]J!.
." Hello, world!" CR ycf)*0k
[buLo*C4:
9Z DbZc
Fortran
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WRITE(*,10) g|j15&x
10 FORMAT('Hello, World!') +y\o^w4sT
STOP -}RGz_LO/
END <(1[n
pS&+
#Vy:6O
gO/\Yi
HTML [@@EE>
y
<HTML> ADA}_|O
<HEAD> BY@l:y4
<TITLE> Hello World! </TITLE> (/ -90u
</HEAD> zX6Q7Bc
<BODY> &,* ILz
<p>Hello World!</p> p+-IvU
</BODY> aJ[|80U
</HTML> i"mQ
spWo{
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HQ9+ HrUE?Sq
H c7nbHJi
Z_mQpt|y
u,]qrlx{
INTERCAL @Thrizh
PLEASE DO ,1 <- #13 lBudC
DO ,1 SUB #1 <- #238 u5Mg
DO ,1 SUB #2 <- #112 Y/
%XkDC~
DO ,1 SUB #3 <- #112 )!;20Po
DO ,1 SUB #4 <- #0 -op)X>
DO ,1 SUB #5 <- #64 gw$?&[wY
DO ,1 SUB #6 <- #238 tRNMiU
DO ,1 SUB #7 <- #26 )"_&CYnd
DO ,1 SUB #8 <- #248 a3,A_M}M'
DO ,1 SUB #9 <- #168 2s}G6'xE]P
DO ,1 SUB #10 <- #24 Uy?X-"UR
DO ,1 SUB #11 <- #16 w%(D4ldp
DO ,1 SUB #12 <- #158 3mL(xpT.8z
DO ,1 SUB #13 <- #52 Z6&bUZF$bE
PLEASE READ OUT ,1 l
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PLEASE GIVE UP YD0j&@.
,[3}t%Da
uH#X:Vne
Java G/_xn5XDD
public class Hello m= %KaRI
{ Hm+VGH'H?
public static void main(String[] args) )S}.QrG
{ )~IOsTjI
System.out.println("Hello, world!"); &PX!'%X68h
} 4}Lui9
} gLlA'`!
@VyF'
?}
E:[!)UG|y
JSP :d~mlyFI6P
<% %vUUx+
out.print("Hello, world!"); %BQ?DTtb7'
%> t{`uN
|W*2L]&
-b34Wz(
MIXAL 5C9
.h:c4y
TERM EQU 19 the MIX console device number m8INgzVTC
ORIG 1000 start address uWi pjxS
START OUT MSG(TERM) output data at address MSG Q |hBGH9:B
HLT halt execution %&J`mq
MSG ALF "MIXAL" D;OPsNQ
ALF " HELL" 4tSh.qBht
ALF "O WOR" =6N=5JePB
ALF "LD " q(BRJ(
END START end of the program *z]P|_:&G
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&a6-+r
Nuva hMgk+4*
<..直接输出..> ^;$9>yi1
Hello, world! i%MR<M
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<..或者..> J ayax]u7J
fT<3~Z>m
<. ;KG}Yr72
// 不带换行 n.,ZgLx["
? "Hello, world!" Kr`.q:0GK
SN`L@/I
// 或者 .5tXwxad"
ES#q/yab5
// 带换行 H~:g=Zw
?? 'Hello, world!' -$kbj*b##
.> jU }
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$U2Jq@G*
OCaml %v^qQWy=*
let main () = z;>O5a>z
print_endline "Hello world!";; s}DNu<"g
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L>N)[;|
Pascal |r4&@)
program Hello;
\P*%u
begin V3axwg_
writeln('Hello, world!'); =wa5\p/
end. .SBN^fq
5yp
|+=ctpx9&
Perl }-vP~I
#!/usr/local/bin/perl zj=F4]w
print "Hello, world!\n"; 4Cvo^k/I
2XeN E[
0IsnG?"
PHP eqpnh^0}d
<?php `$/M\aM%
print("Hello, world!"); X4"[,:Tw
?> DyQvk
H$&P=\8n
QFhQfn
Pike n>%TIoY
#!/usr/local/bin/pike =I+5sCF{g
int main() 24Htr/lPCT
{ S_Vquw(+
write("Hello, world!\n"); >*}m.'u
return 0; a0
w
} `UkPXCC\1
<Q.-WV]Z
2f9%HX(5
PL/I ^X<ytOd5
Test: procedure options(main); -} +PE 4fh
declare My_String char(20) varying initialize('Hello, world!'); PmDar<m
put skip list(My_String); Uq2 Qh@B
end Test; yn{U/+
n\YWWW[wf
r}t%DH
Prolog ~|e H8@o
goal w"j [c#vM
write("hello,world!"). +]{PEnJ
{>#4{D00
Umk ! m] q
Python [m]O^Hp{{
#!/usr/local/bin/python ~Q1%DV.
print "Hello, world!" 8f#&CC!L
82z<Q*YP
BP@Lhii
REXX cU r'mb
say "Hello, world!" bC]GL$ph9*
U^$l$"~"
K7d]p0d'
Ruby SyR[G*djl
#!/usr/bin/ruby 6.GIUM%D
print "Hello, world!\n" 3)qtz_,H/g
C$EvcF%1
-"3<Ll
Scheme ,u<aKae
(display "Hello, world!") {-\VX2:;[9
(newline) uY=}w"Db
YQ<O.E
\9dC z;
sed (需要至少一行输入) ;-T%sRI:|
sed -ne '1s/.*/Hello, world!/p' ,LJX
E@\bFy_!>b
Mo+HLN
Smalltalk 68jq1Y
Pv
Transcript show: 'Hello, world!' K3^N_^H
q9c:,k
fmj-&6
SNOBOL {EGm6WSQ^
OUTPUT = "Hello, world!" hSDuByoi
END #x|h@(y|
UGJ#
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O486:tF
SQL 3?GEXO&,E
create table MESSAGE (TEXT char(15)); I8 {2cM;
insert into MESSAGE (TEXT) values ('Hello, world!'); NI136P
select TEXT from MESSAGE; gyW##M@{
drop table MESSAGE; O)!MWmr
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rTjV/~
Tcl _S;L|1>S
#!/usr/local/bin/tcl <<P&
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puts "Hello, world!" fu 95-)M
(s`yMUC+
6uf+,F
TScript ;yO7!{_
? "Hello, world!" @OlV6M;qJ
S:GX!6>
TY3WP$u
Turing 3g]Sp/
put "Hello, world!" ?qt>;o|Ue
,IW$XD
I2=?H<
UNIX-style shell 'i|z>si[*
程序中的/bin/sh可改为您使用的shell AtN=G"c>_
\$Nx`daFi
#!/bin/sh tF<|Eja*
echo 'Hello, world!' fr%}|7
FXPw 5
H`$s63
GUI }w&+H28.#
r~uWr'}a}
Delphi qmcLG*^,
program HelloWorld; WX}"Pj/6
uses o5\nqw^
Dialogs; &zr..i4O
begin 2rq)U+
ShowMessage('Hello, World!'); EF?@f{YY$n
end. j|&?BBa9
eXI ^9uH
D^Bd>Ey4
Nuva >uuP@j
<. hgCeU+ H
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) mB.kV Ve0
.> O>zM(I+p
N&!qur \
y8Bi5Ae,+1
Visual Basic :cmfy6h]
MsgBox "Hello, world!" gd6We)&
'或者 z6vRTY
Print "Hello, world!" x )wIGo
h5G>FPM-=
g_}r)CgG|
Visual FoxPro *s/sF@8<X
? "Hello, world!" #e0tT+
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UB]}j^
X11 \.A~>=:
用一个程序 BW}^ n
1%|+yu1
xmessage 'Hello, world!'
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用C++和gtkmm 2 }'dnL
b+\jFGC%6=
#include <iostream> ,8g~,tMr+
#include <gtkmm/main.h> t$8f:*6(*
#include <gtkmm/button.h> 3ryIXC\v
#include <gtkmm/window.h> +I#5?
using namespace std; m,v"N%k,
'|<