“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。 eUKl
Co
yf#%)-7(
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》。 OnPy8mC
u7Y'3x,`
以下是用不同语言写成的Hello World程序的几个例子: Io4:$w
Ada ?lET45'
with Ada.Text_Io; use Ada.Text_Io; G2yUuyAZ
procedure Hello is "{ry 9?z
begin rlO%%Qn`
Put_Line ("Hello, world!"); Dt~}9HrU
end Hello; QIMv9;
+U_-Lq )
`6BS-AVO7
汇编语言 FbCZV3Y
|B{$URu
x86 CPU,DOS,TASM ,5A>:2 zs
MODEL SMALL "{ QHWZ
IDEAL Nh\8+v*+{
STACK 100H N>}K+M>
{OhkuON
DATASEG H-cBXp5z
HW DB 'Hello, world!$' R
!%m5Q?5
?k:])^G5
CODESEG Er/5 ,
MOV AX, @data 'd.@4 9
MOV DS, AX
oRbYna?J
MOV DX, OFFSET HW MZP><Je&
MOV AH, 09H `Z7ITvF>
INT 21H SAll9W4
MOV AX, 4C00H R&=GB\`:a
INT 21H mZ5K hPvf8
END :{xN33@6\X
zloaU
SJ[@fUxO)
x86 CPU,GNU/Linux,NASM =<'iLQb1
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Kf?{GNE7
;Enter this into "hello.asm" then type: F;X q:e8
;"nasm -f elf hello.asm" ;~@PYIp
;"ld hello.o -o hello" ~oW8GQ
;"./hello" WGG)
mh&-
mQA<t)1
section .data ;data section declaration klC^xSx
msg db 'Hello World!',0AH h%w\O Z7
len equ $-msg ;string length '3u]-GU2_
1uge>o&
section .text ;code section declaration UWWD8~:
global _start ;entry point (start of execution) _g`0td>N
_start: mov edx,len ;string length NX""?"q
mov ecx,msg ;string start qVRO"/R
mov ebx,1 ;file handle: stdout wpdEI(
mov eax,4 ;sys_write (z1%lZ}(
int 80h ;kernel system call vYt:}$AE
~Ro:mH:w
mov ebx,0 ;return value UH^wyKbM
mov eax,1 ;sys_exit +#I~#CV!
int 80h ;kernel system call TnU$L3k
^)IL<S&h
; ?lM|kK
x86 CPU,Windows,MASM32 F",abp!
.386 7fzyD
.model flat,stdcall oJ@PJvmR&a
option casemap:none 9]F&Fz/G
;Include 文件定义 i+x6aQ24
include windows.inc [ 6o:v8&3
include user32.inc q\HBAry
includelib user32.lib OO
wA{]gK
include kernel32.inc m',_kY3
includelib kernel32.lib '=b&)HbeK
;数据段 -0r"#48(%
.data E)_!Hi0<s
szCaption db 'A MessageBox!',0 =+-.5M
szText db 'Hello,world!',0 KZ}4<{3
;代码段 >)A
.code [;#.DH]
start: %^%-h}1
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK g+/U^JIc4l
invoke ExitProcess,NULL 3N%Evo
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 6dy4{i
end start )B&<Bk+
~\}EROb<
Q
fyERa\rb
AWK c3!|h1h/v
BEGIN { print "Hello, world!" } ^$,kTU'=
SyVbCj
&?`&X=Q
BASIC |M/
\'pOe
传统版BASIC(例如GWBASIC): PZhZK
VZx
OK J%M]<
10 PRINT "Hello, world!" JHZo:Ad -&
20 END :=7 '1H
x71!r
或在提示符输入: Xsn - +e
_]ttKT(
?"Hello, world!":END ulSTR f
q4ko}jn
现代版BASIC(例如Quick BASIC): 6:z&ukqE
3L]^x9Cu)
Print "Hello, world!" )Qj9kJq
Q0; gF?
以下的语句在Quick BASIC中同样有效: 4$2T zJE
!cq|g
? "Hello,world!" ,h`D(,?X
t RyGxqiG
6Vzc:8o>
BCPL 2,Dc]oj
GET "LIBHDR" /"{ ,m!
+sl uu!~
LET START () BE `6sQlCOnF
$( %R"/`N9R,
WRITES ("Hello, world!*N") yaYt/?|
$) L0VR(
?HyioLO
e CUcE(
Befunge ZWW8Hr
"!dlrow olleH">v $K5s)!
, 9qy 9
^_@ }o:sx/=u_
`oWjq6
y]Tn#4 ,/
Brainfuck 1p<?S}zg@
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< w&cyGd D5
+++++++++++++++.>.+++.------.--------.>+.>. E
d/O\v@
_NnOmwK7
H
7F~+Q-}
C o5XUDDi
#include <stdio.h> uPv?Hq
0_pwY=P
int main(void) ZDmk<}A-U
{ R.`J"J0/~
printf("Hello, world!\n"); H&IP>8Dk
return 0; :Qp/3(g e
} 3A}8?
(4{9
QO
h1o+7
C++ h#ot)m|I
#include <iostream> E+Mdl*
b}*bgx@<
int main() &Q+V I/p
{ ',j-n$Z^=
std::cout << "Hello, world!" << std::endl; BD#;3?|
return 0; bd*(]S9d
} O~OWRJ@p
A3pQ?d[
DkKD~
C++/CLI
/?xn
int main() 9cj-v}5j
{ \^LR5S&
System::Console::WriteLine("Hello, world!"); k $&A
} B9:0|i!!A`
|?=1tS{iT
BVp.A]
C# (C Sharp) K3D $
hb
class HelloWorldApp '+zsj0!A
{ ahv=HWX k
public static void Main() oA@^N4PD
{ mXaUWgO
System.Console.WriteLine("Hello, world!");
@+#p:sE
} .WE0T|qDX
} ;_&L^)~P$
&L~rq)r/&
(UXB#I~
COBOL (Fd4Gw<sq
IDENTIFICATION DIVISION. io3'h:+9s
PROGRAM-ID. HELLO-WORLD. K(<P" g(
#7ZBbq3=
ENVIRONMENT DIVISION. p<19 Jw<
rNC3h"i\
DATA DIVISION. R\amcQ
9
kl"Cm`b)
PROCEDURE DIVISION. )d`$2D&iY
DISPLAY "Hello, world!". !P3|T\|]+
STOP RUN. M0
8Y
<);u]0
Ec
7M'~1
Common Lisp )yZE>>3-
(format t "Hello world!~%") QjU"|$
>@uYleD(
]#.# ]}=
DOS批处理 B4ze$#
@echo off n#/m7
echo "Hello, world!" our5k
qJj5J;k
9V\`{(R
Eiffel 0O4mA&&!oK
class HELLO_WORLD EtGr&\,
.r'.5RI A
creation ]NsaFDi\
make rRel\8
feature V= PoQ9d
make is ^]gl#&"D
local {'kL]qLg
io:BASIC_IO pBkPn+@
do =^v Ub
!!io 3)\qts5
io.put_string("%N Hello, world!") _4Pi>
end -- make Hefqzu
end -- class HELLO_WORLD {!h[@f4
>,vuC4v-
{piS3xBi
Erlang Z4' v
-module(hello). E}2[Pb)e
-export([hello_world/0]). h+(s/o?\
7RJW
hello_world() -> io:fwrite("Hello, World!\n"). < *OF
LL+rdxJO^
/]&1 XT?
Forth ')cu/
." Hello, world!" CR +Wc[$,vk
DYK|"@
-NeF6
Fortran E !M+37/
WRITE(*,10) m=V2xoMw6
10 FORMAT('Hello, World!') C:{'0m*jKs
STOP K%B i8d
END +i =78
{o`5&EoM
[4yQ-L)]e
HTML a\E]ueVD2j
<HTML> l/LUwDI{
<HEAD> H#E0S>Jw|
<TITLE> Hello World! </TITLE> Nl _Jp:8s
</HEAD>
P_g
<BODY> |0-L08DW
<p>Hello World!</p> *
=l9gv&
</BODY> +
aFjtb
</HTML> ppjrm
nv]64mL3
1S:H!h3
HQ9+ LlJvuQ 28
H z16++LKmM
[f}1wZ*
04t_
INTERCAL u 36;;z
PLEASE DO ,1 <- #13 S\m]z e
DO ,1 SUB #1 <- #238 D=Y HJ>-wB
DO ,1 SUB #2 <- #112 jBbc$|O4SY
DO ,1 SUB #3 <- #112 \
PqV|
DO ,1 SUB #4 <- #0 B?'ti{p
A9
DO ,1 SUB #5 <- #64 J4i0+u
DO ,1 SUB #6 <- #238 /'&LM\
DO ,1 SUB #7 <- #26 sJWwkR
DO ,1 SUB #8 <- #248 O"Q=66.CR
DO ,1 SUB #9 <- #168 u 6+
DO ,1 SUB #10 <- #24 [geY:v_B
DO ,1 SUB #11 <- #16 Pt+_0OsR
DO ,1 SUB #12 <- #158 kn.z8%^(
DO ,1 SUB #13 <- #52 M> <
PLEASE READ OUT ,1 </QSMs
PLEASE GIVE UP .9ne'Ta
*#_jTwQe
(
9l|^w["
Java K]l)z* I
public class Hello j>iM(8`t1
{ T5h[{J^
public static void main(String[] args) =Sq7U^(>
{ mVLGQlvVK
System.out.println("Hello, world!"); BJ5#!I%h
} #z.x3D@^r6
} ~cjvo?)&e;
DI\sq8J^
Fwr,e;Z
JSP eMwf'*#
<% r[x7?cXsW
out.print("Hello, world!"); 7Fp2=j
%> X)~-MY*p
.\ZxwD|
:lAR;[WFS
MIXAL (hoqLL\}k
TERM EQU 19 the MIX console device number OsXQWSkj~
ORIG 1000 start address >/*\xg&J
START OUT MSG(TERM) output data at address MSG y~fy0P:T
HLT halt execution __M}50^
MSG ALF "MIXAL" w'!gLta
ALF " HELL" Syk^7l
ALF "O WOR" nL?B
ALF "LD " Xqy{=:0
END START end of the program !`gg$9
`
T!O
)5
;#due
Nuva |*b8-a8<
<..直接输出..> `W9_LROD
Hello, world! `6/7},"9t
fCKcv |
<..或者..> &V"&