“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。 lJt?0;gn
Sb^o`~ Eh
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》。 FiKGB\_]
|Q$Dj!!1P
以下是用不同语言写成的Hello World程序的几个例子: bzh:
Ada )!Zm*(
with Ada.Text_Io; use Ada.Text_Io; lsU`~3nr
procedure Hello is { a_&L
begin i93^E~q]
Put_Line ("Hello, world!"); |eqp3@Y1E
end Hello; |y4j:`@.
/L=Y8tDt
, 8o
Y(h
汇编语言 IU\h,Ug
C0W-}H
x86 CPU,DOS,TASM E.G]T#wt0
MODEL SMALL |a=7P
IDEAL {?Cm
STACK 100H MP~+@0cv
I "HEXsSe
DATASEG /%TL{k&m$
HW DB 'Hello, world!$' ?~ <NyJHN%
]{18-=
CODESEG x!fgZr{
MOV AX, @data Esf\Bo"
MOV DS, AX >3&9Wbv>
MOV DX, OFFSET HW `!<#'PR
MOV AH, 09H nZ[`Yrq)0
INT 21H 4xgfm.9I^
MOV AX, 4C00H vw
:&c.zd
INT 21H =l>=]O~h
END VyWzb
n$<n
Yr`X
6foiN W+
x86 CPU,GNU/Linux,NASM {Gw{W&<
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). t(UdV
;Enter this into "hello.asm" then type: 04:QEC"9mj
;"nasm -f elf hello.asm" uG(XbDZZ1W
;"ld hello.o -o hello" EPU3Jban
;"./hello" P?Kg7m W
XO}SPf-
section .data ;data section declaration !UHX?<3r
msg db 'Hello World!',0AH yeA]j[ #
len equ $-msg ;string length 3g5D[>J'
A}i>ys
section .text ;code section declaration sLf~o"yb
global _start ;entry point (start of execution) l_pf9!z
_start: mov edx,len ;string length Z9j`<VgN
mov ecx,msg ;string start G4uA&"OE
mov ebx,1 ;file handle: stdout ,;n[_f
mov eax,4 ;sys_write lD$\t/8B
int 80h ;kernel system call D[`~=y(
K+`deH_d
mov ebx,0 ;return value } wx(P3BHD
mov eax,1 ;sys_exit Mg&<W#$K
int 80h ;kernel system call J:G{
cyB2=,
BzTzIo5
x86 CPU,Windows,MASM32 @>`qfy?
.386 fYlqaO4[
.model flat,stdcall +@~e9ZG%a
option casemap:none dw%g9DT
;Include 文件定义 o0TB>DX$`
include windows.inc 0@RVM|
include user32.inc =b>e4I@
includelib user32.lib Fi#
9L
include kernel32.inc MJU*Sq
includelib kernel32.lib 68~5Dx
;数据段 U "v=XK)!
.data M|7][!<G!
szCaption db 'A MessageBox!',0 U5[r&Y
D
szText db 'Hello,world!',0 |{La@X
;代码段 # ELYPp]6
.code zpg512\y
start: hHgH'
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK =]o2{d
invoke ExitProcess,NULL u/%Z0`X
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ,r;E[k@
end start
p]jG
,S
K4b2)8
@{ L|&Mk!
AWK bjq.nn<=
BEGIN { print "Hello, world!" } o)8VJ\ &
kArF Gb2c
O;.DQ
BASIC "
"S&zN
传统版BASIC(例如GWBASIC): B5[As8Sa
M-(,*6Q
10 PRINT "Hello, world!" 1jd.tup
20 END %yK- Q,'O
\W|ymV_Ki
或在提示符输入: r(<91~Ww
3gv?rJV
?"Hello, world!":END r9p ((ir
I_|W'%N]
现代版BASIC(例如Quick BASIC): &_' evZ8
V!s#xXD }
Print "Hello, world!" n>,? V3ly
F(w<YU%6
以下的语句在Quick BASIC中同样有效: CKX3t:HP0
d"S\j@
? "Hello,world!" _p<wATv?7t
%&wi@ *#
:0p$r
pJP
BCPL HC"yC;_
GET "LIBHDR" $|VdGRZ1
CHDt^(oa!B
LET START () BE xu>grj
$( 8v6AfTo%
WRITES ("Hello, world!*N") pv^: G;
$) RY\0dv>
Nj +^;Y
f||S?ns_
Befunge ~|ha91
"!dlrow olleH">v wdIJ?\/763
, rj/nn)vv;
^_@ #;h>
x
]2_=(N\Kt
/xd|mo)D
Brainfuck cDz^jC
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< C1OiM b(:
+++++++++++++++.>.+++.------.--------.>+.>. c=re(
3pyE'9"f6
4W=fQx]
C fIn^a3TV
#include <stdio.h> O2/_$i[F
| NyANsI
int main(void) <slrzc_>&
{ g|j15&x
printf("Hello, world!\n"); /&l4 sF1
return 0; 34L1Gxf
} .]N`]3$=
"O_)~u
ak{XLzn
C++ 3~Ll<8fv
#include <iostream> \T?6TDZ]
l!:L<B
int main() H>%L@Btw
{ .&n!4F'
std::cout << "Hello, world!" << std::endl; hJ75(I
*j
return 0; kpMo7n
} #!P>.".
(/ -90u
sYB2{w
C++/CLI "oh;?gQ.
int main() z~ua#(z1S
{ V14+?L
System::Console::WriteLine("Hello, world!"); GQ sE5Vb
} SQ<{X/5
B[d%?L_
F:A Vik
C# (C Sharp) z Ece>=C
class HelloWorldApp Lzx2An@R
{ T&j:gg
public static void Main() pk6<wAs*?#
{ A>)Ced!
System.Console.WriteLine("Hello, world!"); RQ4+EW1G
} |gU)6}V@
} CD4@0Z+
EtQ:x$S_
24\^{3nOK
COBOL cI-@nV
IDENTIFICATION DIVISION. *DvQnj
PROGRAM-ID. HELLO-WORLD. i/PL!'oq
r(rT.D&
ENVIRONMENT DIVISION. onm"7JsO'
Ql"~ z^L
DATA DIVISION. *a-KQw
%q6I-
PROCEDURE DIVISION. #$l:%
DISPLAY "Hello, world!". >` u8(
STOP RUN. 0qW"b`9R
,o}CBB! k
AuY*x;~
Common Lisp U[z2{\
(format t "Hello world!~%") f<y3/jl4
a3,A_M}M'
Hk$do`H-=Y
DOS批处理 j.c{%UYj
@echo off x+v&3YF
echo "Hello, world!" [kMWsiZ
3E}j*lo
1v*N]}`HU
Eiffel |o@U
L
class HELLO_WORLD #k,.xMJ~
0n\AUgVPF
creation WP'.o
make "`h.8=-
feature COj^pdE3
make is >O0<u
local ,[3}t%Da
io:BASIC_IO fP 3t0cp
do PJ,G_+b!
!!io (-VH=,Md
io.put_string("%N Hello, world!") dJ>tM'G
end -- make 8!MVDp[|"
end -- class HELLO_WORLD OHv9|&Tpl
-fN5-AC
40[@d
Erlang 0a1Mu>P,
-module(hello). 0v``4z2Z
-export([hello_world/0]). P G
zwS
RFq=`/>dG
hello_world() -> io:fwrite("Hello, World!\n"). u/xP$
2iC BF-,
]ZH6
.@|
Forth ,rOh*ebF
." Hello, world!" CR l~[
K.p&
W{1l?Wo
=%|f-x
Fortran SZ:R~4 A
WRITE(*,10)
$QwzL/a
10 FORMAT('Hello, World!') j$4lyDfD
STOP !j3Xzn9
END cQ3p|a `
UG]x CkDS
uE>m3Y(aP
HTML #c9MVQ_
<HTML> X|L_}Q7
<HEAD> u++a0>N
<TITLE> Hello World! </TITLE> }H/94]~tH
</HEAD> i_nUyH%b
<BODY> pp2 Jy{\d
<p>Hello World!</p> *z]P|_:&G
</BODY> 3h6,x0AG
</HTML> 3wQ\L=
nYO$ |/e
e~nh95
HQ9+ pP%+@;
H 5f75r
!e~d,NIy
M>i *e
INTERCAL oWggh3eXk
PLEASE DO ,1 <- #13 }a%Wu 7D
DO ,1 SUB #1 <- #238 .tsXQf
DO ,1 SUB #2 <- #112 3%u: c]-wF
DO ,1 SUB #3 <- #112 |T-Ytuy8
DO ,1 SUB #4 <- #0 '=d y
=
DO ,1 SUB #5 <- #64 qj^A
DO ,1 SUB #6 <- #238 K3&k+~$
DO ,1 SUB #7 <- #26 kjr q;j:
DO ,1 SUB #8 <- #248 J3'0^JP*
DO ,1 SUB #9 <- #168 |1Nz8Vr.
DO ,1 SUB #10 <- #24 gL1r"&^L
DO ,1 SUB #11 <- #16 Vkqfs4 t
DO ,1 SUB #12 <- #158 k"cKxzB
DO ,1 SUB #13 <- #52 1+l[P9?R[
PLEASE READ OUT ,1 bHzZ4i
PLEASE GIVE UP l a_
[?da BXS
v'Up& /(
Java
\P*%u
public class Hello $$R->
{ o+\?E.%%g
public static void main(String[] args) e)i-$0L"
{ ]agdVr^
System.out.println("Hello, world!"); f%REN3=5K
} =4Jg6JKYg
} 3 >^B%qg6
ul"Z%
1]
'NnmLM(oh
JSP t'C9;
<% t2qWB[r
out.print("Hello, world!"); RC!T1o~L
%> #QW%
;^
`$/M\aM%
UQtG<W]<
MIXAL x/ P\qI
TERM EQU 19 the MIX console device number WhV>]B2+"
ORIG 1000 start address 5zt5]zl'
START OUT MSG(TERM) output data at address MSG ;bq
EfV0`2
HLT halt execution +:z%#D
MSG ALF "MIXAL" |mz0
]
ALF " HELL" aQ)g7C
ALF "O WOR" u#Uc6? E
ALF "LD " B_%O6
END START end of the program y{nX 6
6<UI%X
r\|"j8
Nuva oXqx]@7
<..直接输出..> utw@5
Hello, world! 3N{
ZX{}
4_\]zhS
<..或者..> hPUYq7B
2V*<J:;wb
<. zrur-i$N+
// 不带换行 oF0*X$_X
? "Hello, world!" McU]U9:z
|CjdmQ u
// 或者 Pu!%sG jD
VHU,G+ms
// 带换行 {>#4{D00
?? 'Hello, world!' &E!-~'|z
.> N_E:?Jo
7me1:}4
;p)fW/<
OCaml fOO[`"'Pq
let main () = 6j~'>w(F
print_endline "Hello world!";; 5LxzET"P
z^9df(
LD}ZuCp!
Pascal #'kVW{
program Hello; %:.00F([r
begin 26c1Yl,DMn
writeln('Hello, world!'); -ID!kZx
end. e@{8G^o>D
O7T wM Yh
i52:<<