“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。 /Ur]U
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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》。 3Q_)Xs
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以下是用不同语言写成的Hello World程序的几个例子: )Zrn?KM
Ada [V0%=q+ R
with Ada.Text_Io; use Ada.Text_Io; _;:B@Z
procedure Hello is |j4;XaG)
begin DK#Tr: 7
Put_Line ("Hello, world!"); 3
op{h6
end Hello; ,?!MVN-
Z;6?,5OSc
1z@{4)
汇编语言 cq8JpSB(
MFqb_q+
x86 CPU,DOS,TASM s_U--y.2r(
MODEL SMALL s2 $w>L
IDEAL ![m6$G{y
STACK 100H [\=1|t5n~
e)|5P
DATASEG M?I^`6IOc8
HW DB 'Hello, world!$' D*ZswHT{y
l@>@2CB
CODESEG Oo9'
MOV AX, @data ;6*$!^*w
MOV DS, AX 2QKt.a
MOV DX, OFFSET HW `Yyi;!+0
MOV AH, 09H iT</
INT 21H `Cz_^>]|=
MOV AX, 4C00H (Z Q?1Qxo
INT 21H M/YS%1
END *4c5b'u
&,$N|$yK}|
seZb;0
x86 CPU,GNU/Linux,NASM M} Mgz
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Ce} m_
;Enter this into "hello.asm" then type: B\+uRiD8w
;"nasm -f elf hello.asm" |q
Pu*vR
;"ld hello.o -o hello" z]!w@:
;"./hello" Sp[]vm8N
+(h{3Y|
section .data ;data section declaration Tj!rAMQk
msg db 'Hello World!',0AH p,7?rI\N
len equ $-msg ;string length dAi.^! !
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section .text ;code section declaration STz@^A
global _start ;entry point (start of execution) )g`~,3G
_start: mov edx,len ;string length 1tl qw
mov ecx,msg ;string start ,vuC0{C^
mov ebx,1 ;file handle: stdout LXf|n
mov eax,4 ;sys_write &5hs
W1`
int 80h ;kernel system call gq~"Z[T
Nwk^r75l q
mov ebx,0 ;return value c~!ETwpHQ
mov eax,1 ;sys_exit %{0F.
int 80h ;kernel system call i\=I` Yn+
KIY9?B=+
Nop61zj
x86 CPU,Windows,MASM32 $}=r45e0K
.386 vILgM\or
.model flat,stdcall c!mMH~#
option casemap:none 6Y9<| .
;Include 文件定义 <|hrmwk|
include windows.inc uFFC.w
include user32.inc kkXe= f%
includelib user32.lib ){KrBaGa4
include kernel32.inc nD}<zj$D2
includelib kernel32.lib j_S3<wEJ
;数据段 A:5P
.data W3n[qVZIC
szCaption db 'A MessageBox!',0 kB=5=#s
szText db 'Hello,world!',0 l`a_0
;代码段 t<%+))b
.code (N5"'`NZA
start: F1p|^hYDW
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK AnpO?+\HF
invoke ExitProcess,NULL $)'LbOe
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> .`oKd@I*"
end start W >|'4y)
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^}lL@Bd|
AWK m<!CF3g
BEGIN { print "Hello, world!" } ?\zyeWK0L
}&%&0$%
-?Cu-'
BASIC &iT^IkA{
传统版BASIC(例如GWBASIC): _B\87e
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10 PRINT "Hello, world!" >E
WK
cocM
20 END 3M>y.MS
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或在提示符输入: ){w!<Lb
"WH
&BhQYD
?"Hello, world!":END wkT4R\H >
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现代版BASIC(例如Quick BASIC): nWUau:%
l!ZzJ&
Print "Hello, world!" muO;g&
^ tVIPH.R
以下的语句在Quick BASIC中同样有效: +y][s{A
Se(apQH
? "Hello,world!" {fMo#`9=
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;XXEvRk
BCPL Uh^j;s\y
GET "LIBHDR" =q[ynZ8O\w
EdZNmL3cB
LET START () BE N8X)/W
$( 4ZB]n,pfT
WRITES ("Hello, world!*N") Kc+9n%sp
$) ~L.5;8a3Pe
$=Tq<W*c
Zm#,Ike?#
Befunge <g, 21(bc
"!dlrow olleH">v <XzRRCYQ
, d!"gb,ec
^_@ lT'V=,Y
t
\*c=bz&l
s*vtCdrE.
Brainfuck Sf
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++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ")w~pZE&+
+++++++++++++++.>.+++.------.--------.>+.>. AS lmW@/9v
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sO)!}#,
C N]G`]
#include <stdio.h> .G|U#%"6x
o^u}(wZ{
int main(void) =E&1e;_xlE
{ e(9K.3@{
printf("Hello, world!\n"); mHNqzdaa
return 0; ~~#/jULbV
} > Qh#pn*
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UiZ1$d*
C++ ?y^ ix+M
#include <iostream> ##U/Wa3
y <P1VES
int main() `Vh&XH\S
{ ;\iu*1>Z,&
std::cout << "Hello, world!" << std::endl; yRz l}
return 0; a(x#6
} Bhe0z|&
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ShOB"J-
C++/CLI %i&\X[
int main() P}-S[[b73s
{ :Y)G- :S+
System::Console::WriteLine("Hello, world!"); T"E%;'(cp)
} Ky{C;7X
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C# (C Sharp) C3; d.KlV
class HelloWorldApp R#/0}+-M
{ 7[8d-Sf24{
public static void Main() g]._J
{ 5~"m$/yE
System.Console.WriteLine("Hello, world!"); P2 +^7x?
} xic&m5j
m
} ak(P<OC-
#}8gHI-9%
mMad1qCi7
COBOL 5
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IDENTIFICATION DIVISION. >F/5`=/'h
PROGRAM-ID. HELLO-WORLD. j7C&&G q
8HdjZ!
ENVIRONMENT DIVISION. ,m)YL>k
q_:B=w+bC
DATA DIVISION. -J++b2R\%
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PROCEDURE DIVISION. 1(4IcIR5T;
DISPLAY "Hello, world!". N'8}5Kx5
STOP RUN. ))uki*UNK
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wQX%*GbL2
Common Lisp 0f,Ii_k bT
(format t "Hello world!~%") <:~'s]`zf
d'p@[1/
nAyyjd3!S
DOS批处理 lUHpGr|U%
@echo off E\~!E20^
echo "Hello, world!" !(qaudX{>k
6CzN[R}
It8@Cp.dU
Eiffel <Kq!)) J'
class HELLO_WORLD -)E6{
+Z/aG k;
creation $9<P3J 1
make y?V#LW[^E
feature {c=H#- A
make is &fwb?Vn4
local u]t#Vf-$u
io:BASIC_IO o&rNM5:
do |z.Ov&d4)(
!!io zA&]#mc
io.put_string("%N Hello, world!") WO{9S%ck
end -- make E XQ3(:&
end -- class HELLO_WORLD ],Y+|uX->
uh~,>~a|
$:*/^)L
Erlang *iujJi
-module(hello). ]q@W(\I
-export([hello_world/0]). <{A |Xs
UC?i>HsJrX
hello_world() -> io:fwrite("Hello, World!\n"). (k>I!Z/&2
M!]g36h[
U("m}^
Forth |?<r
." Hello, world!" CR |dk9/xdX
1&JB@F9!
_6MNEoy?
Fortran _<;westq
WRITE(*,10) {@3p^b*E)1
10 FORMAT('Hello, World!') 8Sg:HU\
STOP > 0NDlS%Q:
END tfq; KR
\ dZD2e4
)R"deb=s
HTML "z ;ky8
<HTML> "?Xb$V7
<HEAD> yI}_
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<TITLE> Hello World! </TITLE> +L<x0-&
</HEAD> !\N|$-M
<BODY> FLOSdMYdw
<p>Hello World!</p> T~-PT39E
</BODY> Z/=HQ8
</HTML> h%(0|
HXRK<6k$
H%`|yUE(
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H -$5nqaK?
1N\-Ku
L9(!L$
INTERCAL ]iVoF N}^
PLEASE DO ,1 <- #13 p+d?k"WN?
DO ,1 SUB #1 <- #238 pbb6?R,
DO ,1 SUB #2 <- #112 XKT2u!Lx
DO ,1 SUB #3 <- #112 9x9~u8j
DO ,1 SUB #4 <- #0 #u6ZCv7u
DO ,1 SUB #5 <- #64 8gI~x.k`
DO ,1 SUB #6 <- #238 ,mW-O!$3W
DO ,1 SUB #7 <- #26 K=X13As_
DO ,1 SUB #8 <- #248 b py576GwA
DO ,1 SUB #9 <- #168 \%011I4
DO ,1 SUB #10 <- #24 ?.b.mkJ
DO ,1 SUB #11 <- #16 N8w@8|KM
DO ,1 SUB #12 <- #158 h$eVhN&Vv
DO ,1 SUB #13 <- #52 74q|FQ
PLEASE READ OUT ,1 Rt10:9Kz$
PLEASE GIVE UP jFMf=u&U
8rA?X*|S!
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