“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。 vFx0B?
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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》。 n ]<>$
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以下是用不同语言写成的Hello World程序的几个例子: _Z0O]>KH
Ada 2t3DQ
with Ada.Text_Io; use Ada.Text_Io; ( kFg2kG
procedure Hello is {+N7o7
begin WW[G ne
Put_Line ("Hello, world!"); i9=*ls^Cx
end Hello; $8;`6o`
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汇编语言 3qVDHDQ?ZV
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x86 CPU,DOS,TASM ?rSm6V
MODEL SMALL 6)#=@i`
\
IDEAL C'S&
STACK 100H DRy,n)U&
x:0nK,
DATASEG e:T8={LU2W
HW DB 'Hello, world!$' 0)HZ5^J
L^%jR=
CODESEG cd3;uB4\,
MOV AX, @data ZGgM-O1
MOV DS, AX ]dU/;8/%
MOV DX, OFFSET HW uk<JV*R=
MOV AH, 09H _I<LB0kgf.
INT 21H `F,*NESv
MOV AX, 4C00H Jr.4Y>;}e3
INT 21H (;T g1$
END <UE-9g5?G
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x86 CPU,GNU/Linux,NASM t`
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;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). -8pQI
;Enter this into "hello.asm" then type: 6U?z
;"nasm -f elf hello.asm" grbUR)f<?-
;"ld hello.o -o hello" ?_BK(kL_
;"./hello" ]`H8r y2
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section .data ;data section declaration T^1]|P
msg db 'Hello World!',0AH P; DGs]PF
len equ $-msg ;string length 90[?)s
&
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section .text ;code section declaration
#Ks2a):8
global _start ;entry point (start of execution) =1e>$E#
_start: mov edx,len ;string length Y-y<gW
mov ecx,msg ;string start 9yWQ}h
mov ebx,1 ;file handle: stdout R\ZyS
)~l
mov eax,4 ;sys_write _I
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int 80h ;kernel system call e)):U
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mov ebx,0 ;return value ITr@;@}c]
mov eax,1 ;sys_exit kr{eC/Q"
int 80h ;kernel system call ^wTod\y
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x86 CPU,Windows,MASM32 ]O 8hkGa
.386 Ce-D^9kC
.model flat,stdcall ,5J}Wo?Q}
option casemap:none se]q~<&
;Include 文件定义 y{O817 \
include windows.inc n04lTME
include user32.inc A.>L>uR
includelib user32.lib M~"93 Q`f^
include kernel32.inc ? ht;ZP
includelib kernel32.lib P(Wr[lH\y
;数据段 :I/i"g7<
.data U%T{~f
szCaption db 'A MessageBox!',0 JoIh2P D
szText db 'Hello,world!',0 ~Jlo>
;代码段 kHx6]<
.code Bq*aP*jv
start: ,o68xfdZVW
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK [_w;=l0 ;
invoke ExitProcess,NULL jTE~^
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> vd ]75
end start e%K
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AWK hJkF-yW
BEGIN { print "Hello, world!" }
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h&O8e;S#
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BASIC C)v*L#{%
传统版BASIC(例如GWBASIC): &* 1iW(x
lN,)T%[0-
10 PRINT "Hello, world!" Nub)]S>_/t
20 END *@SZ0
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或在提示符输入: wbA<G&h~
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?"Hello, world!":END /\e&nYz
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现代版BASIC(例如Quick BASIC): dSq3V#Q
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Print "Hello, world!" Kh,zp{
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以下的语句在Quick BASIC中同样有效: '3eL^Aq
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? "Hello,world!" i3v|r 0O~L
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BCPL MF]EX
GET "LIBHDR" V<W$h`
nr>Os@\BU
LET START () BE -FrNk>
$( s?pd&_kOv3
WRITES ("Hello, world!*N") KV { J>J1
$) A[6D40o
.M zAkZ=
lOJ3_8
Befunge f'28s*n
"!dlrow olleH">v Lj#K^c Ee
, E3P2
^_@ g+ P
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w/UZ6fu
Brainfuck 3qNLosm#M
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< (// f"c]/
+++++++++++++++.>.+++.------.--------.>+.>. qrxn%#\XP
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C Exu>%
#include <stdio.h> uFl19
DSX.84
int main(void) \I[50eh|
{ GO<,zOqvU
printf("Hello, world!\n"); "B"Yfg[
return 0; m2h@*
} unZYFA}(
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ey ; 94n:<
C++ UD}#c:I
#include <iostream> Z:3SI$tO
'#Pg:v_
int main() W<sa6,$
{ (W'.vEl
std::cout << "Hello, world!" << std::endl; G>>TB{}
return 0; fq,LXQ#G
} `%oJa`
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I`-N]sf^
C++/CLI @&fAR2
int main() ?Q#yf8
{
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System::Console::WriteLine("Hello, world!"); j,@@[{tu
} Ap)[;_9BD
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+2?=W1`
C# (C Sharp) waRK$/b
(
class HelloWorldApp v62O+{
{ k?7V#QW(
public static void Main() |ryV7VJ8
{ <A+n[h
System.Console.WriteLine("Hello, world!"); W3aFao>!OZ
} s.qo/o\b
} W _JGJV.^f
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yuA+YZ
COBOL m?)REE
IDENTIFICATION DIVISION. x_VD9
PROGRAM-ID. HELLO-WORLD. yNc"E
{$H-7-O$
ENVIRONMENT DIVISION. mA2L~=v#
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DATA DIVISION. r)xkpa5
O~~WP*N
PROCEDURE DIVISION. 4SDUTRoa
DISPLAY "Hello, world!". S;L=W9=wby
STOP RUN. bpp{Z1/4
_`- trE.
ckhU@C|=*
Common Lisp |0N6]%r
(format t "Hello world!~%") MFzJ 8^.1R
b;k3B7<
}fT5(+ Wo
DOS批处理 :plN<8
@echo off 4Fs5@@>X
echo "Hello, world!" ~dz,eB
2uZ4$_
6>=yX6U1q^
Eiffel fWk,k*Z9
class HELLO_WORLD ta+MH,
:XFr"aSt
creation !9p;%Ny`
make XV %DhR=
feature 0s'h2={iI
make is bpgvLZb>s
local "kS!rJ[
io:BASIC_IO s:ZYiZ-
do 8Z[YcLy"({
!!io `WRM7
io.put_string("%N Hello, world!") $s.:H4:I
end -- make h'm-]v
end -- class HELLO_WORLD ;vuqI5k
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hb="J349
Erlang rZ#ZY
-module(hello). HzQY\Y6
-export([hello_world/0]). 50jZu'z:
)Gm,%[?2C
hello_world() -> io:fwrite("Hello, World!\n"). CR8szMa
eEl71
scQnL'\
Forth '^!#*O
." Hello, world!" CR RzOcz=A}
tN1xZW:
zN3b`K. i
Fortran L'L[Vpx
WRITE(*,10) euiP<[|h=
10 FORMAT('Hello, World!') #T3dfVWv
STOP cKEDRX3
END !*G%vOa
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HTML \`U=pZJ
<HTML> XT%\Ce!
<HEAD> 6"YcM:5~
<TITLE> Hello World! </TITLE> pt$\pQ
</HEAD> nr]:Y3KyxX
<BODY> sOqT*gwr:
<p>Hello World!</p> 9_-6Lwj6t
</BODY> 8yDe{
</HTML> Rl{e<>O\^
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cw"Ou%
HQ9+ B?
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H 9T#${NK
K;Fs5|gFU
lW|`8ykp
INTERCAL ?Gqq]ozm
PLEASE DO ,1 <- #13 z3Zo64V~7
DO ,1 SUB #1 <- #238 38#Zlcf
DO ,1 SUB #2 <- #112 8_Nyy/K#F
DO ,1 SUB #3 <- #112 \@B'f
DO ,1 SUB #4 <- #0 G_]zymXQ
DO ,1 SUB #5 <- #64 _)kTlX:,
DO ,1 SUB #6 <- #238 U!i1~)s
DO ,1 SUB #7 <- #26 r#'ug^^k$X
DO ,1 SUB #8 <- #248 dt|| nF
DO ,1 SUB #9 <- #168 IqAML|C
DO ,1 SUB #10 <- #24 0fzHEL
DO ,1 SUB #11 <- #16 ^D8~s; ?
DO ,1 SUB #12 <- #158 1I?`3N
DO ,1 SUB #13 <- #52 2h:{6Gq8
PLEASE READ OUT ,1 D/YMovH%
PLEASE GIVE UP ?[<#>,W
yu>)[|-
SA?lDRF
Java PH$C."Vv
public class Hello +Ly@5y"
{ 19b@QgfWpb
public static void main(String[] args) ?DGg.2f
{ QpD-%gN
System.out.println("Hello, world!"); HA74s':FN
} 0[]) wl
} &u2H^ j
xn=#4:f
T5Iz{Ha
JSP p1UYkmx[
<% (YM2Cv{4
out.print("Hello, world!"); 1ixBwnp?
%> <?>tjCg'
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v{SZ(;
MIXAL GTM@9^
TERM EQU 19 the MIX console device number zygH-3C7o
ORIG 1000 start address I0*N
"07n
START OUT MSG(TERM) output data at address MSG x[=,$;o+
HLT halt execution 5PsjGvm.%
MSG ALF "MIXAL" $0R5 ]]db)
ALF " HELL" &F:%y(;{Y
ALF "O WOR" jO-T1P']Y
ALF "LD " : T{VCw:*
END START end of the program gBr/Y}I
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Nuva sJ{r+wY
<..直接输出..> 8<Pi}RH
Hello, world! ~b@"ir+g4
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<..或者..> *q"1I9zvT
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<. 6l:uQz9
// 不带换行 ~ mz X1[
? "Hello, world!" =h xyR;
uFA}w:Fm
// 或者 >0_{80bdO
eX1_=?$1P
// 带换行 +|Izjx]ZV
?? 'Hello, world!' $xCJ5M4
.> d_!}9
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+p[O|[z
OCaml 5=\^DeM@
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let main () = KZO[>qC"R
print_endline "Hello world!";; Cp+tcrd_s
Fi/`3A@68
'P*OzZ4>$
Pascal c/^l2CJ0
program Hello; 4
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begin fR?'HsQg
writeln('Hello, world!'); %}JSR y
end. PjofW%7F
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YC$>D?FW
Perl hXvC>ie(i
#!/usr/local/bin/perl qHgzgS7a
print "Hello, world!\n"; m#ig.z|A
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\r9E6LLX'
PHP #l h'
!
<?php Qsw.429t
print("Hello, world!"); V CVKh
?> nch#DE82
Khl0 ~
cY Qm8TR<
Pike /E3~z0
#!/usr/local/bin/pike 'y5H%I!
int main() 2'@D0L
{ '
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write("Hello, world!\n"); Q~/=p>=uu
return 0; 7nBX@Uo
} aK_k'4YTm
}u1h6rd `
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PL/I ZvLI~ul(zT
Test: procedure options(main); 'v@*xF/L6a
declare My_String char(20) varying initialize('Hello, world!'); YI;MS:Qj
put skip list(My_String); `4?|yp.|L
end Test; >3*a&_cI=k
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JNT|h zV
Prolog 'MW O3
goal <EdNF&S-
write("hello,world!"). w+Gav4
2R
^6L@fw
0|i|z!N>
Python _T7XCXEk
#!/usr/local/bin/python [:}"MdU'
print "Hello, world!" UkXa mGoy3
%eh.@8GL`
'vYt_T
REXX !]5V{3
say "Hello, world!" jtq^((Ux
sl"H!cwF
d^v.tYM$N
Ruby k2.k}?w!JO
#!/usr/bin/ruby p$ETAvD
print "Hello, world!\n" TA8
OOXP1L
-%Ce
Scheme +G\i$d;St
(display "Hello, world!") gX$gUB) x
(newline) xJnN95`R@
;.rY`<|
JStEOQF4
sed (需要至少一行输入) ]vPdj"7
sed -ne '1s/.*/Hello, world!/p' O4:_c-V2
uRYq.`v,
5iI(A'R[7
Smalltalk ~w9`l8/0
Transcript show: 'Hello, world!' zD<8.AIGC
=6f)sZpPh
6__HqBQ
SNOBOL /"8|26
OUTPUT = "Hello, world!" /{/mwS"W
END 9Zmq7a
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SQL c.5u \I9"
create table MESSAGE (TEXT char(15)); \rO!lvX
insert into MESSAGE (TEXT) values ('Hello, world!'); +\u\BJ!LAJ
select TEXT from MESSAGE; [0]J
2
drop table MESSAGE; 'm"Ez'sS
a#x@e?GvI
DO9K
Tcl f"NWv!
#!/usr/local/bin/tcl ]0SqLe
puts "Hello, world!" g[uf
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gjFQDrz(
TScript ?<5KLvG v
? "Hello, world!"
QAMcI:5
1_]%,
TJ>1?W\Z
Turing baL<|&
c
put "Hello, world!" =P_*.SgR
Sfp-ns32%A
om=kA"&&Q
UNIX-style shell XW\
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程序中的/bin/sh可改为您使用的shell 4Ss y (gt
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w =
#!/bin/sh YfMs~}h,
echo 'Hello, world!' c,M"a
t<$J
3h/"
;O5Iu
GUI "3|OB, <;:
&&m1_K
Delphi A/fM30
program HelloWorld; S v#,L8f
uses f^F"e'1
Dialogs; SQ]M"&\{y
begin i70\`6*;B
ShowMessage('Hello, World!'); ]2ycJ >w
end. 4L4u<
ne 3t|JZ
l Ft&cy2
Nuva tp }Bz&V
<. rOj(THoc{
System.Ui.ShowMessage('Nuva', 'Hello, world!', ['OK']) AAKc8{
.> ,^ dpn
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aGws?<1$
Visual Basic 'z)cieFKP
MsgBox "Hello, world!" &OEBAtc/
'或者 ;B(16&l=q
Print "Hello, world!" qV,x )y:V
,S@B[+VZ
E9t8SclV
Visual FoxPro "Vp:Sq9y
? "Hello, world!" l8_RA
fA[T5<66
:Z_abKt
X11 Ir*{IVvej
用一个程序 (v:8p!QN
C7}iwklcsa
xmessage 'Hello, world!' hstGe>f[6
r>PKl'IbE
用C++和gtkmm 2 )KkV<