“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。 o%vIkXw
j)6@q@P/
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》。 Ytl:YzXCi
DH}s1mNMP
以下是用不同语言写成的Hello World程序的几个例子: uU8*$+ "
Ada PFImqojHd
with Ada.Text_Io; use Ada.Text_Io; h-z%C6
procedure Hello is +}Qv6s#
begin o%kSR ]V|
Put_Line ("Hello, world!"); ZkJY.H-F
end Hello; ~J8cS
$=\oJ-(!@S
5"76R
Gw=
汇编语言 ?3]h~(=
I>N-95
x86 CPU,DOS,TASM *D,v>(
MODEL SMALL [,\'V0
IDEAL E&RoaY0
STACK 100H [VfLv.8w
*T.={>HE8
DATASEG RM?_15m
HW DB 'Hello, world!$' rnzsfr-|(2
,gAr|x7_
CODESEG jK ?
MOV AX, @data [+%p!T
MOV DS, AX o`<h=+a\
MOV DX, OFFSET HW pHI%jHHJ
MOV AH, 09H f)&`mqeE
INT 21H r?Ev.m
MOV AX, 4C00H dg!1wD
INT 21H +^^S'mP8
END K1m!S9d`x
]pM5?^<~
"k>{b:R|
x86 CPU,GNU/Linux,NASM b?+Yo>yF8
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). w]]x[D]L
;Enter this into "hello.asm" then type: sqq/b9 uL/
;"nasm -f elf hello.asm" &(z8GYBr
;"ld hello.o -o hello" x9XGCr
;"./hello" hq|jC
j8D$/
section .data ;data section declaration @F""wKnV
msg db 'Hello World!',0AH puf;"c6e'
len equ $-msg ;string length )_x8?:lv
30gZ_8C>}
section .text ;code section declaration C%x(`S^/
global _start ;entry point (start of execution) h=p-0 Mx .
_start: mov edx,len ;string length ^)eessZ
mov ecx,msg ;string start N7j]yvE
mov ebx,1 ;file handle: stdout FM@W>+
mov eax,4 ;sys_write ;-<<1Jz/2
int 80h ;kernel system call 1xFhhncf
e!:?_z."
mov ebx,0 ;return value .@x"JI>;
mov eax,1 ;sys_exit 'vf,T4uQ"
int 80h ;kernel system call ,M+h9_&0?
S7\|/h:4
nU">> 1!U
x86 CPU,Windows,MASM32 e>)}_b
.386 >mGGJvTx
.model flat,stdcall `Tm8TZd66
option casemap:none tyGnG0GK
;Include 文件定义 ^{6UAT~!R
include windows.inc l*m]2"n]
include user32.inc sKE*AGFLd
includelib user32.lib hj#+8=
include kernel32.inc H)?" 8 s
includelib kernel32.lib ]0/~6f
;数据段 +Qb2LR
.data ]UpHD.Of[t
szCaption db 'A MessageBox!',0 4n.i<K8K[
szText db 'Hello,world!',0 lHj7O&+
;代码段 9X^-)G>
.code a3E*%G
start: epY;1,;>
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK b`;b}ug
invoke ExitProcess,NULL a#^4xy:
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> `OF;>u*:
end start BZ'y}Zu*
#L+s%OJ`
!513rNO
AWK Wpg?%+Y
BEGIN { print "Hello, world!" } Z?G3d(YT
X\^3,k."
#L1yL<'
BASIC .q;RNCUt
传统版BASIC(例如GWBASIC): XN 0RT>@
802]M
10 PRINT "Hello, world!" :ayO+fr#
20 END H 29 _ /
?M1 QJ
或在提示符输入: 4HYH\ey
=tvm=
?"Hello, world!":END ,y{fqa4
iM-hWhU
现代版BASIC(例如Quick BASIC): hzf}_1
, K"2tb
Print "Hello, world!" S)AE
\)6?u_(u
以下的语句在Quick BASIC中同样有效: -%QEzu&
Wf&G9Be?8
? "Hello,world!" ?eg@
7n
(}7o
a9Q<
\FaB!7*~
BCPL 4j=@}!TBt
GET "LIBHDR" #@OKp,LJ
|H|eH~.yg&
LET START () BE V'|g
$( V[2<ha[n>
WRITES ("Hello, world!*N") 14)kKWG
$) U:\oGa84A
-<VF6k<
^/RM;`h0
Befunge P$#}-15?|_
"!dlrow olleH">v W} +6L|
, TY{?4
^_@ )~o`QM+
E(K$|k_>
'5+, lRu
Brainfuck I{P$B-
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< -B++V
+++++++++++++++.>.+++.------.--------.>+.>. 'kONb
u+i/CE#w
#| e5
C K|' ]Hje\
#include <stdio.h> qm&53
}v|[h[cZ
int main(void) ]r{#268
{ l9Cy30O6
printf("Hello, world!\n"); &^Q~G>A
return 0; /URj$|
} C
@[9 LB
iF2IR{h
C@:N5},]
C++ *{n,4d\..
#include <iostream> fJN9+l
:~YyHX
int main() ZI:d&~1i1
{ TbUkqABm
std::cout << "Hello, world!" << std::endl; ,Y/>*,J
return 0; a*ixs'MJ
} pmXWI`s
|r*1.V(
mwiPvwHrg
C++/CLI !QzMeN;D
int main() ~d1RD
{ q\b9e&2Y
System::Console::WriteLine("Hello, world!"); 7JK 'vT
} !c;p4B)
{>qrf:
PyJblW
C# (C Sharp) FH@e:-*=
class HelloWorldApp D2mAyU-
{ sg~/RSJ3
public static void Main() o0v m?CL#
{ _3?xIT
System.Console.WriteLine("Hello, world!"); :zTj"P>"I
} HH7gT
} I,q~*d
Gl\RAmdc
3uiitjA]
COBOL 7PPsEU:rf
IDENTIFICATION DIVISION. 6I'VXdeN
PROGRAM-ID. HELLO-WORLD. uqH! eN5
.
*+7xL
ENVIRONMENT DIVISION. bJu,R-f
TuPxyB
DATA DIVISION. u(Q(UuI
_!T$|,a
PROCEDURE DIVISION. p5 PON0dS
DISPLAY "Hello, world!". Z-=7QK.\{
STOP RUN. &]A1 _dy
%x)U8
+mel0ZStS
Common Lisp Lgw@y!Llij
(format t "Hello world!~%") kxiyF$
9
(W6\%H2u
H0:6zSsc=|
DOS批处理 Kd21:|!t^
@echo off O?<_,-.
echo "Hello, world!" {twf7.eY
{+59YO
t z>X'L
Eiffel 0{@Ovc
class HELLO_WORLD M%LwC/h:,
R1rfp;
creation p_y*-,W
(
make tg4&j$
feature ph. :~n>z
make is $BN+SD!
local , 0ja _
io:BASIC_IO O-m}P
do %=>xzP(z
!!io Z%d4V<fn
io.put_string("%N Hello, world!") ]nGA1 S{
end -- make "s^@PzQpN
end -- class HELLO_WORLD U*l>8
ijSYQ
u8\QhUk'G
Erlang H`..)zL|
-module(hello).
BNUf0;
-export([hello_world/0]). e=$xn3)McY
7q=xW6
hello_world() -> io:fwrite("Hello, World!\n"). DEuW' .o>
-igZU>0B_
MH(g<4>*
Forth -B! TA0=oJ
." Hello, world!" CR ]zAg6*-/B
a];i4lt(c
G-> @
Fortran T0C'$1T
WRITE(*,10) q&x#S_!
10 FORMAT('Hello, World!') <\
c8q3N
STOP Qc/J"<Lx
END 7guxkN#
@K>Pw arl
b8Sl3F?-~
HTML RGOwm~a
<HTML> %ua5T9H Z
<HEAD> KL{uhb0f
<TITLE> Hello World! </TITLE> [#H8Mb+7
</HEAD> Z k_&Kw|
<BODY> g*9>z)
<p>Hello World!</p> ,\"gN5[$(
</BODY> DSa92:M}
</HTML> cViCWc2
KLB?GN?Pb
]C^*C|
HQ9+ QJ'C?hn
H Nzt1JHRS
)`0 j\
}3e+D
INTERCAL B 8,{jwB
PLEASE DO ,1 <- #13 n`1i k'x?
DO ,1 SUB #1 <- #238 -JkO[IF
DO ,1 SUB #2 <- #112 ->UrWW^
DO ,1 SUB #3 <- #112 Gd 9B
DO ,1 SUB #4 <- #0 =0|evC
DO ,1 SUB #5 <- #64 YTA&G
DO ,1 SUB #6 <- #238
C5?M/xj
DO ,1 SUB #7 <- #26 ,@MPzpH
DO ,1 SUB #8 <- #248 *a4eL [
DO ,1 SUB #9 <- #168 ':@qE\(
DO ,1 SUB #10 <- #24 +/'jX?7x%
DO ,1 SUB #11 <- #16 /PlsF
DO ,1 SUB #12 <- #158 6cvm\opH
DO ,1 SUB #13 <- #52 ,\IZ/1
PLEASE READ OUT ,1 ce\-oT
PLEASE GIVE UP D=$<Ex^p
f
#14%?/
c+c^F/
Java z~al
h?H
public class Hello hJM0A3(Cm
{ u ""=9>0
public static void main(String[] args) ZVL0S{V-mh
{ WfVie6
System.out.println("Hello, world!"); J\BdC];
} k-/$8C
} Z:{Z&HQC
*W
l{2&
$qqusa}`K
JSP YDwns
<% Q2o:wXvj
out.print("Hello, world!"); Syb:i(Y
%> `:&{/|uP7
}Z|a?J@CZm
pI4<`
K
MIXAL e0P1FD<@
TERM EQU 19 the MIX console device number w~`P\i@
ORIG 1000 start address RXDk8)^
START OUT MSG(TERM) output data at address MSG ur|2FS7
HLT halt execution -Y6JU
MSG ALF "MIXAL" ~H.;pJ{ 8
ALF " HELL" 0;9LIL5
ALF "O WOR" R?(j#bk
ALF "LD " Gu-Sv!4p
END START end of the program B4?P"|
z'm;H{xf
f"Z2&