“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。 ^e,RM_.
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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》。 ~&:R\
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以下是用不同语言写成的Hello World程序的几个例子: vrv*k
Ada swFOh5z
with Ada.Text_Io; use Ada.Text_Io; -JENY|6
procedure Hello is @ 1A_eF
begin ix+x-G
Put_Line ("Hello, world!"); i|^6s87"N2
end Hello; *~uuCLv_
{ bn#:75r
!?*!"S-Sl
汇编语言 AZy2Pu56
[]0~9,u
x86 CPU,DOS,TASM }AqD0Qd2Hj
MODEL SMALL Y7)@(7G)\
IDEAL 2oG|l!C
STACK 100H " G6jUTt
h,'+w
DATASEG @EZONKT
HW DB 'Hello, world!$' |=T<WU1$
q*nz4QTOE
CODESEG W@dY:N}
MOV AX, @data UJ$:5*S=u
MOV DS, AX odf^W
MOV DX, OFFSET HW ,P@-DDJ
MOV AH, 09H *$C[![
INT 21H
0QqzS
MOV AX, 4C00H HjS^
nYl
INT 21H !y~b;>887
END j]"xck
!@Lc/'w
9nS!
x86 CPU,GNU/Linux,NASM %:?QE
;
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). #aX@mPm
;Enter this into "hello.asm" then type: SqF.DB~
;"nasm -f elf hello.asm" 4"x;XVNM[
;"ld hello.o -o hello" iBC>w+t14
;"./hello" (v:ek_
!F#aodM1N
section .data ;data section declaration qjzW9yV+
msg db 'Hello World!',0AH +|YZEC
len equ $-msg ;string length Q5n :f+
a
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section .text ;code section declaration S{T d/1}
global _start ;entry point (start of execution) jY+S,lD
_start: mov edx,len ;string length ,GU/l)os`
mov ecx,msg ;string start ,D2_Z]
mov ebx,1 ;file handle: stdout gCr|e}w-
mov eax,4 ;sys_write 8{]Gh 0+
int 80h ;kernel system call 1DtMY|wP
8Vhck-wF
mov ebx,0 ;return value ?}v% JUcs
mov eax,1 ;sys_exit >TnQ4^;v.
int 80h ;kernel system call kseJm+Hc
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cievC,3*
x86 CPU,Windows,MASM32 CN~NyJL H
.386 PFy;qk
.model flat,stdcall 65#:2,s
option casemap:none tlLn
;Include 文件定义 )z235}P
include windows.inc {a8^6dm*E
include user32.inc DE\bYxJ
includelib user32.lib uE#,c\[8
include kernel32.inc g+ 1=5g
includelib kernel32.lib /:{_| P\
;数据段 ~uR6z//%
.data <-B"|u
szCaption db 'A MessageBox!',0 ]Bd3d%
szText db 'Hello,world!',0 |EV\a[
;代码段 w1@b5-
.code "=\_++
start: 6eYf2sZ;J
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK =l2Dm
invoke ExitProcess,NULL
uV}WSoq[
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 66@3$P%1p
end start s7nX\:Bw:
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W({TC
AWK j-`X_8W
BEGIN { print "Hello, world!" } ~J>gVg%66
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b}Hl$V(uD
BASIC 1m<?Q&|m$
传统版BASIC(例如GWBASIC): !H|82:`t+
v<3o[m q
10 PRINT "Hello, world!" Hn9F
gul&
20 END h>Uid
&:?
]ZKt1@4AY
或在提示符输入: o47 f
g2{H^YUN$_
?"Hello, world!":END }{wTlR.]
(21 W6
现代版BASIC(例如Quick BASIC): tdnXPxn[
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Print "Hello, world!" O(D5A?tv!
mk%"G =w
以下的语句在Quick BASIC中同样有效: B(\r+" PB
H8-D'q>R
? "Hello,world!" 1 73<x){
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Vvyrty
BCPL 33<fN:J]f
GET "LIBHDR" e@:P2(WWl
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LET START () BE qH
h'l;.
$( q]N?@l]
WRITES ("Hello, world!*N") RJRq` T|m
$) ?#*
{;iHYr-zs
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Befunge k)5_1 y
"!dlrow olleH">v _iGU|$a
, iL0jpa<}
^_@ O[(?.9
RF4$
\U!@OX.R'M
Brainfuck O J35En
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< d2A
wvP
+++++++++++++++.>.+++.------.--------.>+.>. ^5;vx
)ew[ Ak|
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C UEEBWz H
#include <stdio.h> 7bonOt
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V/3 {^Fcr
int main(void) ~[zFQ)([
{ -OrY{^F
printf("Hello, world!\n"); 0\cnc^Z
return 0; ntj`+7mw
} =|E
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\m=-8KpU
8
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C++ 8
)mjy!,
#include <iostream> -7I1Lh#M
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int main() q}<.x8\
{ 1iNsX\M
std::cout << "Hello, world!" << std::endl; \-Iny=$
return 0; R%b*EBZ
} &r'{(O8$N
I%}L@fZ
<AI>8j6#B
C++/CLI v}F4R $
int main() &gGs) $f[
{ 7_Ba3+9jpa
System::Console::WriteLine("Hello, world!"); ='dLsh4P2N
} 3:[!t%Yb
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(px*R~}
C# (C Sharp) Sc&)~h}YF
class HelloWorldApp lx{.H,1~
{ &GdL 9!hH
public static void Main() =5y`(0 I`U
{ B*?ZE4`
System.Console.WriteLine("Hello, world!"); Hva2j<h
} &l.x:eD
} y$IaXr5L
(O8,zqP9l
n}< ir!ZTO
COBOL y#S1c)vU
IDENTIFICATION DIVISION. M!N`
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PROGRAM-ID. HELLO-WORLD. 4 ,p#:!
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ENVIRONMENT DIVISION. L]k*QIn:h
N9i}p^F<_
DATA DIVISION. CN.6E<9'kK
e7@li<3>d
PROCEDURE DIVISION. %{R_^Y8t
DISPLAY "Hello, world!". p`>AnfG
STOP RUN. 3<c*v/L{C\
[AXsnpa/C
6xQ"bFm
Common Lisp sA/,+aM
(format t "Hello world!~%") B/jrYT$;m
Ln
~4mN^
0TTIaa$
DOS批处理 DpA\r_D
@echo off "_ LkZBW.
echo "Hello, world!" hzaLx8L
:3*`IB !
Ur^YG4(
Eiffel C/F@ ]_y
class HELLO_WORLD fd4;mc1T
@&?a]>L
creation W|;nJs:e
make / ^w"' '
feature a*Rz<08
make is 3PfiQ|/b
local <z^SZ~G
io:BASIC_IO Q> kiVvc
do +x(YG(5\w
!!io aSRjFL^
io.put_string("%N Hello, world!") ^~^mR#<P$
end -- make F?7u~b|@{
end -- class HELLO_WORLD Q"A_bdg5
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uu}'i\Q
Erlang 8{oZi]ob
-module(hello). vx'l>@]k
-export([hello_world/0]). #`/bQ~s
}A-{ 6Qe
hello_world() -> io:fwrite("Hello, World!\n"). f[x~)=
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{p*z
$( S*GF$S
Forth .+OB!'dDK^
." Hello, world!" CR c8T/4hU
MN
Truc[A.2Z
>GgE,h
Fortran bn $)f6%
WRITE(*,10) !6lOIgn
10 FORMAT('Hello, World!') ^D>fis
STOP ]* 0(-@
END '?5S"??
Qe_+r(3)k
2zhn`m
HTML \fTTkpM
<HTML> fTBVvY4(
<HEAD> bV_j`:MD
<TITLE> Hello World! </TITLE> i&JpM]N
</HEAD> C?/r;
<BODY> J2m"1gq,
<p>Hello World!</p> 22z1g(;@
</BODY> DacN{r"3
</HTML> yx2z%E
YV-j/U{&
1DUb
[W8
HQ9+ a~,Kz\Tt
H F'1k<V?
-OWZ6#v(
QCWf.@n
INTERCAL guU=NQZ
PLEASE DO ,1 <- #13 $(3uOsy
DO ,1 SUB #1 <- #238 [P{a_(
DO ,1 SUB #2 <- #112 ^+wk
DO ,1 SUB #3 <- #112 40u7fojg2
DO ,1 SUB #4 <- #0 CI^[I\$&
DO ,1 SUB #5 <- #64 \0nlPXk?G
DO ,1 SUB #6 <- #238 })PO7:
DO ,1 SUB #7 <- #26 d.p'pGL
DO ,1 SUB #8 <- #248 88+
=F
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DO ,1 SUB #9 <- #168 =5?.'XMk
DO ,1 SUB #10 <- #24 ]w!0u2K<Q\
DO ,1 SUB #11 <- #16 wqP2Gw7jh6
DO ,1 SUB #12 <- #158 F_
81l<
DO ,1 SUB #13 <- #52 U9
bWU'
PLEASE READ OUT ,1 33 :@*
PLEASE GIVE UP okstY4f'
p-xd k|'[
cAb>2]M5V
Java w//omF'`
public class Hello yPoSJzC=[
{ afx'
public static void main(String[] args) 4@h;5
{ Kk=LXmL2
System.out.println("Hello, world!"); %&h c"7/k
} J#''q"rZ
} n}JPYu
_lX8K:C(
ALXTR%f
JSP zW5C1:.3K
<% b1xpz1
out.print("Hello, world!"); &))\2pl
%> |NJ}F@t/5
vQgq]mA?
w^Ag]HZN
MIXAL 6Hk="$6K
TERM EQU 19 the MIX console device number ~>g+2]Bn>$
ORIG 1000 start address \x(^]/@
START OUT MSG(TERM) output data at address MSG f}iU& 3S
HLT halt execution dw9T f ^V
MSG ALF "MIXAL" hO3{
ALF " HELL" Wo!;K|~P
ALF "O WOR" u h)o
ALF "LD " {n&Uf{
END START end of the program k3>YBf`fC
H O*YBL
[9AM\n>g
Nuva F?BS717qS%
<..直接输出..> cDIBDC
Hello, world! 6e.[,-eU
UFw](%=&M
<..或者..> E{%SR
U*\17YU6h
<. YG`?o
// 不带换行 D"^'.DL@wG
? "Hello, world!" e)b%`ntF
gi$XB}L+X
// 或者 Ac`;st%l.
{$33B'wk
// 带换行 KmmQ ,e%
?? 'Hello, world!' 2khh4?|\
.> ~KPv7WfG
4-^[%&>}
0[Eb .2I
OCaml )+EN$*H
let main () = |>+uw|LtZ
print_endline "Hello world!";; Oaa"T8t
59lj7
sJU`u'w
Pascal
qybxXK:
program Hello; ]iVLHVqz
begin /iG7MC\`
writeln('Hello, world!'); WbcS: !0
end. 4TZ cc|B5
8:dQ._#v
5FOqv=6S
Perl p$XKlg&
#!/usr/local/bin/perl a
<wL#Id
print "Hello, world!\n"; i\Wdo/c-H
%\6Q .V#s
24B<[lSK
PHP x-;`-Uo%
<?php t)a;/scT
print("Hello, world!"); HdNnUDb$B
?> !0"nx{7.
N'?u1P4G
*x(Jq?5O7X
Pike >2lwWXA
#!/usr/local/bin/pike pj8azFZ
int main() g7n"
{ &