“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。 <ytKf<a%e
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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》。 _~ZQ b
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以下是用不同语言写成的Hello World程序的几个例子: \1mM5r~
Ada )^f9[5ee
with Ada.Text_Io; use Ada.Text_Io; 9id~NNr7
procedure Hello is Cxk$"_
begin _8b]o~[Z+
Put_Line ("Hello, world!"); M=[q+A
end Hello; Kwl qi]~
;5Vk01R
?3,64[
汇编语言 s>@#9psm
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x86 CPU,DOS,TASM qN1 -plY
MODEL SMALL nN=:#4
>Y
IDEAL q"+ q
STACK 100H x1:Pj
VyoE5o
DATASEG YKe0:cWc
HW DB 'Hello, world!$'
sO6g IPU^
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CODESEG -S,ir
MOV AX, @data Dl zmAN
MOV DS, AX p_5>?[TW:
MOV DX, OFFSET HW t}XB|h
MOV AH, 09H ]~\SR0
INT 21H yxC Ml.
MOV AX, 4C00H ,dZ#,<
INT 21H y4/>Ol]
END O,=Q1*c,&
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qX
p,d
x86 CPU,GNU/Linux,NASM hINnb7o
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). s3Krob`C5
;Enter this into "hello.asm" then type: T Oco({/_/
;"nasm -f elf hello.asm" uXQ7eXX
;"ld hello.o -o hello" V#zhGAMy.
;"./hello"
1o|0x\ q
R(2HYZ
section .data ;data section declaration cXb
@H#
msg db 'Hello World!',0AH vLnq%@x
len equ $-msg ;string length "#-Nqq
B:3+',i1
section .text ;code section declaration =j|v0&
AGC
global _start ;entry point (start of execution) x2j/8]'o
_start: mov edx,len ;string length *R_'$+
mov ecx,msg ;string start $Yx6#m}[M
mov ebx,1 ;file handle: stdout {t844La"
mov eax,4 ;sys_write O1x0[sy
int 80h ;kernel system call 9n>$}UI\
(30<oE{
mov ebx,0 ;return value i{tTUA
mov eax,1 ;sys_exit kyW6S+ #-
int 80h ;kernel system call ^8?j~&u$F
/S7+B]
93Mdp9v+i
x86 CPU,Windows,MASM32 '2|1%NSW9
.386 !
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.model flat,stdcall n!0${QVnS
option casemap:none !X5o7b )
;Include 文件定义 6}VUD
-}B
include windows.inc G 2%
include user32.inc 6QN1+MwB
includelib user32.lib ./ "mn3U
include kernel32.inc hlAR[ ]
includelib kernel32.lib 5TXg;v#Z
;数据段 b@=zrhQ
.data r?64!VS;
szCaption db 'A MessageBox!',0 R&6n?g6@/V
szText db 'Hello,world!',0 _:wZmZU}
;代码段 IXGW2z;
.code uz*d^gr}
start: a`7%A H)
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK f!5F]qP>-
invoke ExitProcess,NULL o;ik Z*+*
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> mWNR( ()v
end start |'ZN!2u
0-*Z<cu%l
$Llta,ULE
AWK jmkRP"ZnA
BEGIN { print "Hello, world!" } CfQf7-
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tY{;
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BASIC Q2*/`L}m\
传统版BASIC(例如GWBASIC): j._G7z/LJ
.j:i&j(
10 PRINT "Hello, world!" -Bj.hx*
20 END JYPxd~T/-
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或在提示符输入: S,lxM,DL&
^rL,&rk
?"Hello, world!":END llNXQlP\B
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现代版BASIC(例如Quick BASIC): [1NaH
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Print "Hello, world!" ~NxEc8Y
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以下的语句在Quick BASIC中同样有效: QO@6VY@
4 &|C}
? "Hello,world!" Z)NrhJC
|Td_S|:d
q&Q/?g>f
BCPL rw&y,%2
GET "LIBHDR" zyDZ$Dhka
oB4#J*
LET START () BE M2dmG<
$( 58J_ w X
WRITES ("Hello, world!*N") 3g;T?E
$) H3KTir"on
ZI13
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Befunge :E_a0!'
"!dlrow olleH">v :0~QRc-u
, SaDA`JmO
^_@ = !2NU
:%4imgY`
r@}bDkx
Brainfuck HZjf`eM,
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< v/QUjXBr
+++++++++++++++.>.+++.------.--------.>+.>. Paf%rv2
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tY/vL^mi
C Oe!6){OG)
#include <stdio.h> Y "jE'
;y>a
nE}n{
int main(void) #/-_1H
{ \OwpD,'
printf("Hello, world!\n"); `wz[='yM
return 0; 6[ga$nF?
} `N87h"
VG@};dwbz*
z~oDWANP
C++ 1Y/$,Oa5
#include <iostream> &Z^(y}jPr
|Ul,6K@f"5
int main() C"pB"^0
{ Qyh/ed/
std::cout << "Hello, world!" << std::endl; '-PC7"o
return 0; LF<wt2?*
} @cvP0A
Y%`SHe7M
> 0>
C++/CLI Kx`/\u=/
int main() t'qL[r%?
{ )0 Z! n
System::Console::WriteLine("Hello, world!"); gBw^,)Q{0Y
} U>qHn'M
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9(_{`2R8
C# (C Sharp) M4f;/ `w
class HelloWorldApp OYL]j{
{ n(ir[w#,]"
public static void Main() 9.OA, 6
{ P
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System.Console.WriteLine("Hello, world!"); y0bq;(~X~
} _k66Mkd#b
} ':h
=*v8a
UmU:j@xvg
db72W
x0>
COBOL s}5+3f$f
IDENTIFICATION DIVISION. 0"WDH)7hJ
PROGRAM-ID. HELLO-WORLD. *A}WP_ZQ
QrYa%D+
ENVIRONMENT DIVISION.
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{=:#S+^ER
DATA DIVISION. K7TzF&
<O~WB
PROCEDURE DIVISION. wVl+]zB
DISPLAY "Hello, world!". m6mwyom.
STOP RUN. d'
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|`d0^(X
Common Lisp ShOX<Fb&
(format t "Hello world!~%") 0ZpFE&
]bdFr/!'S+
LtgXShp_!
DOS批处理 FqFapRX66Z
@echo off =}!Mf'
echo "Hello, world!" GwU?wIIj^
(oz$B0HO:
Lv[OUW#S
Eiffel XM1`x
class HELLO_WORLD Y.#:HRtgW
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creation 0U/,aHvhP
make sM[I4.A3
feature {svn=H
/
make is $
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local \G@wp5
io:BASIC_IO -Y 9SngxM
do !5@_j,lW(
!!io G9P!_72
io.put_string("%N Hello, world!") ![6EUMx
end -- make ;TiUpg</_3
end -- class HELLO_WORLD $!@\
s)
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4\ c,)U}
Erlang t>)45<PEw
-module(hello). b,TiMf9},h
-export([hello_world/0]). }ArpPU
:]
-5l6&Y
hello_world() -> io:fwrite("Hello, World!\n"). #zUXyT#X
NG&_?|OmV
N/QiI.V6
Forth `fXyWrz-k
." Hello, world!" CR 8e~|.wOL
69y;`15
V! |qYM.
Fortran g.JN_t5
WRITE(*,10) ^E`(*J/o
10 FORMAT('Hello, World!') |%a4`w
STOP `IpA.| Y
END (m[bWdANnW
{%v-(
yqXH:757~
HTML YNrp}KQ
<HTML> %%ae^*[!n
<HEAD> 'V+dBt3
<TITLE> Hello World! </TITLE> J~B
7PW
</HEAD> bOp54WI-g
<BODY> {4aWR><
<p>Hello World!</p> q*![AzFh
</BODY> /%aiEhL
</HTML> q}BzyC=:n
g @I6$Z
g42)7
HQ9+ 2O"P2(1}v
H juF{}J2
4F>Urh+
ZD#9&q'4<
INTERCAL 9mc!bj^811
PLEASE DO ,1 <- #13 PfS:AIy
DO ,1 SUB #1 <- #238 Zc
|/{$>:W
DO ,1 SUB #2 <- #112 Rd7_~.Bo
DO ,1 SUB #3 <- #112 '1fNBH2
DO ,1 SUB #4 <- #0 $GQ`clj<
DO ,1 SUB #5 <- #64 1T_QX9
DO ,1 SUB #6 <- #238 WnUweSdW
DO ,1 SUB #7 <- #26 Ll4bdz,
DO ,1 SUB #8 <- #248 x6afI<dm
DO ,1 SUB #9 <- #168 zOEY6lAwI
DO ,1 SUB #10 <- #24 oBq 49u1
DO ,1 SUB #11 <- #16 v1k)hFjPK
DO ,1 SUB #12 <- #158 @UBjq%z
DO ,1 SUB #13 <- #52 GT hL/M
PLEASE READ OUT ,1 n26Y]7N
PLEASE GIVE UP thO ~=RB
O<)y-nx;X
``,k5!a66\
Java WD;Y~|
public class Hello `s '#
{ H_!4>G@
public static void main(String[] args) t#nn@Yf
{ SYeadsvF
System.out.println("Hello, world!"); DcMJ^=r8O:
} UY2X
} L{l6Dd43q
.*$OQA
[>#*B9
JSP ;Z j]~|
<% !/ y!QXj
out.print("Hello, world!"); t:JI!DR
%> {:c]|^w6
V Km!Ri$
Gc.P,K/hr
MIXAL ]Ni$.@Hu$
TERM EQU 19 the MIX console device number E@a3~a
ORIG 1000 start address ~`>e5OgOJ
START OUT MSG(TERM) output data at address MSG wpA`(+J
HLT halt execution T9 <2A1
MSG ALF "MIXAL" T{]~07N?
ALF " HELL" IfO;S*Qt
ALF "O WOR" 4GG>!@|
ALF "LD " _<$>*i
R
END START end of the program dX8hpQ
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Nuva oIGrA-T}
<..直接输出..> %or,{mmiM:
Hello, world! k~%<Ir1V]
GN#<yv$av
<..或者..> %2'A
pp
SUWD]k >PH
<. sDgXU@
// 不带换行 |vte=)%
? "Hello, world!" W$JebW<z(
n}A\2bO
// 或者 0.r4f'vk
%CZ-r"A
// 带换行 C\_zdADUb%
?? 'Hello, world!' oMcK`%ydm
.> 2:}fe}
%I!:ITa
N-lGa@ j
OCaml * v8Ts
let main () = DfJ2PX}q
print_endline "Hello world!";; {qKxz9.y
ogM%N
4vK8kkW1
Pascal 0,*%vG?Q
program Hello; BE&B}LfvfO
begin 3`hUo5K
writeln('Hello, world!'); Kzy/9
end. !.7udYmB
I4rPHZ|
R8*Q$rH<
Perl r%wA&FQ8U
#!/usr/local/bin/perl Uu6L~iB
print "Hello, world!\n"; r#WT`pav
n?#!VN3
HQ!Xj.y
PHP @J[6,$UVu
<?php < (RC|?
print("Hello, world!"); "_L?2ta
?> e"-X U@`k1
#Z=tJ
nGZX7Fx5
Pike k'`m97B
#!/usr/local/bin/pike >-T`0wI
int main() JnD{J`:
{ z;]CmR@Ki
write("Hello, world!\n"); Auy".br'
return 0; RnVtZ#SCh
} C`oa3B,z
w5/X{
`6/Yf@b
PL/I ~m09yc d<
Test: procedure options(main); j6d"8oH
_
declare My_String char(20) varying initialize('Hello, world!'); FC-*?
put skip list(My_String); ?m
r@B
end Test; ?OYwM?Uf
}GNH)-AG)$
.yh2ttf<gB
Prolog G~hILW^
goal ~aR='\<