“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。 Z ? F*Z0y
ta*6xpz-\Q
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》。 O>M4%p
#~I.F4
以下是用不同语言写成的Hello World程序的几个例子: 'QP~uK
Ada q83!PI
with Ada.Text_Io; use Ada.Text_Io; Y)ig:m]#
procedure Hello is ~Pm[Ud
begin @hG]Gs[,o
Put_Line ("Hello, world!"); OsGKlWM/
end Hello; dfa^5`_
W]-c`32~S
vJ a?5Jr
汇编语言 *#| lhf'
VGVb3@
x86 CPU,DOS,TASM ?r%kif)
MODEL SMALL :~ ; 48m
IDEAL H6vO}pq)r
STACK 100H 6+iZJgwAy
gz~)v\5D/
DATASEG &~
.n}h&
HW DB 'Hello, world!$' &$x1^
!D!1%@
e
CODESEG ,WKWin
MOV AX, @data 9EU0R
H
MOV DS, AX DOa%|H'P
MOV DX, OFFSET HW ukAE7O(W&
MOV AH, 09H :W6R]y
INT 21H -Z<V?SFOK
MOV AX, 4C00H Q$B\)9`v[
INT 21H ? JliKFD%
END T:G8xI1
P
3yXSv1
sq;nUA=
x86 CPU,GNU/Linux,NASM 4r-CF#o
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). t91z<Y|
;Enter this into "hello.asm" then type: {*NM~yQ
;"nasm -f elf hello.asm" Z<4Du
;"ld hello.o -o hello" +W}dO#
;"./hello" dSkx*#FEE
9N*!C{VW
section .data ;data section declaration -h`[w:
msg db 'Hello World!',0AH d+iV19 #i
len equ $-msg ;string length +)06*"I
./r#\X)dc
section .text ;code section declaration ~1g)4g~
global _start ;entry point (start of execution) /f Ui2[y
_start: mov edx,len ;string length SbX#$; ks~
mov ecx,msg ;string start ^dP]3D1
@
mov ebx,1 ;file handle: stdout 4^uwZ:
mov eax,4 ;sys_write 5@/hqOiu
int 80h ;kernel system call 2$=I+8IL
zAA3bgaa
mov ebx,0 ;return value EA=EcUf'
mov eax,1 ;sys_exit Pgh)+>ON
int 80h ;kernel system call kWm[Lt
|-zefzD|
~]S%b3>
x86 CPU,Windows,MASM32 rIRkXO)
.386 '6zk>rN
.model flat,stdcall 9'I$8Su
option casemap:none C%T$l8$
;Include 文件定义 \*i[m&3;q
include windows.inc ZhnRsn9
include user32.inc FrL
;1zt
includelib user32.lib F*{1, gb
include kernel32.inc mO0a: i!
includelib kernel32.lib I;rh(FMV
;数据段 N&YQZ^o
.data 71wtO
szCaption db 'A MessageBox!',0 Zf*DC~E_
szText db 'Hello,world!',0 u7G9 eN
;代码段 f)9{D[InM^
.code ZD`p$:pT
start: RuBL_Vi
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK y-R:-K XH=
invoke ExitProcess,NULL JXKo zy41
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> me`|i-
end start %}ASll0uq
NxzRVsNF
mJFFst,
AWK 1_RN*M+#
BEGIN { print "Hello, world!" } ~z&Ho
9{Xh wi)z
|*te69RX
BASIC 5
cz6\A&
传统版BASIC(例如GWBASIC): -l i71.M
3uJ>:,~r
10 PRINT "Hello, world!" =cKrp'
20 END T.B}k`$
*R8qnvE\()
或在提示符输入: M7.
fz"M
1Uf8ef1,
?"Hello, world!":END EhK~S(r^
.N~YVul[a*
现代版BASIC(例如Quick BASIC): 6SVh6o@]
Ps=<@,dks
Print "Hello, world!" r]yI5 ;
YH-+s
以下的语句在Quick BASIC中同样有效: FTT=h0t
Y1s3>`
? "Hello,world!" %LZ-i?DL4Q
3lG=.yD
!^_G~`r$2J
BCPL Zzea
GET "LIBHDR" IKVS7m
h6uv7n~4
LET START () BE (8d"G9R(
$( \L4+Dv<z
WRITES ("Hello, world!*N") /aX#j`PrH
$) |\] _u 3
vm4q1!!(
/Zm5fw9
Befunge YdiXj |k+
"!dlrow olleH">v q+ )csgN
, UukHz}(E
^_@ ~RIn7/A
6S6E
1~
QCVwslj,K
Brainfuck ppXt8G3%x
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< w?Nx^)xX
+++++++++++++++.>.+++.------.--------.>+.>. q@8j[15
Yt#e[CYnu
81&5g'
C r5(-c]E7
#include <stdio.h> [2Rw)!N
xGVL|/?8
int main(void) I$vM )+v=
{ FEqR7
printf("Hello, world!\n"); p&<X&D
return 0; v.pj
PBU1
} }Pf7YuUZZ
#M5[TN!
Tt*n.HA
C++
(U#9
#include <iostream> :"e,&
%
3|g]2|~w@h
int main() mbCY\vEl
{ 2%oo.?!R
std::cout << "Hello, world!" << std::endl; m(c5g[6nO
return 0; e Zb8x
} RBM(>lU:
G>H',iOI
Kl)PF),
C++/CLI "J(7fL$!
int main() T.R(
{ j@b18wZ
System::Console::WriteLine("Hello, world!"); G: p!PB>=
} ' *x?8-K P
FMBzTD
~IP3~m D
C# (C Sharp) ]'a9>o
class HelloWorldApp 1XvB,DhJ
{ ]&kzIxh
public static void Main() 2 -
?
{ *q/oS8vavd
System.Console.WriteLine("Hello, world!"); 5Zdxn>
} h=Xr J
} kH10z~(e
{@gTs
g6=w
MRt[
COBOL q<` g
IDENTIFICATION DIVISION. Q?\rwnW?U
PROGRAM-ID. HELLO-WORLD. Mb#-I
GZ
l<l6Ey(
ENVIRONMENT DIVISION. eE'2B."F
=5yI>A0
DATA DIVISION. E*_lT`Hzf
V$7SVq
PROCEDURE DIVISION. TtaVvaz~>
DISPLAY "Hello, world!". )^o7%KX
STOP RUN. QX$i
]y%S
]/y&5X
3#@ETt0X(
Common Lisp &bO0Rn1F
(format t "Hello world!~%") xo46L\
nS}XY
HBc^[fJ^-
DOS批处理 8}0O @ wq
@echo off jLEwFPz
echo "Hello, world!" Zg@NMT
M6+_Mi.
TLk=HGw
Eiffel u\-f\Z7
class HELLO_WORLD Jc:gNQCsP
-r!N;
s$t
creation 2nFSu9}+r
make XdDy0e4{%<
feature .CL\``
make is 6jRUkI-!
local 1x^(vn#=
io:BASIC_IO -$]Tn#`Fb
do ?r,lgaw
!!io u}7#3JfLn
io.put_string("%N Hello, world!") ttwfWfX
end -- make IaU
end -- class HELLO_WORLD uW8LG\Z>D5
[ Yzh(a8
6J|Y+Y$
Erlang 4D`T_l
-module(hello). fdD?"z
-export([hello_world/0]). U0+Hk+
C>qKKLZ
hello_world() -> io:fwrite("Hello, World!\n"). +##b}?S%
$Qv+*%c
~8-Z=-
Forth [kyF |3k~
." Hello, world!" CR /Wh}
;YTv^
}D7q)_g=
L{)e1 p]q
Fortran !6pOY*> j
WRITE(*,10) FX FTf2*T
10 FORMAT('Hello, World!') xsx
@aF
STOP z~/z>_y$nv
END pv=g)
;^Vsd\ac0
K>h=
HTML 8gv\`
<HTML> aIv>X@U}
<HEAD> @}K'Ic
<TITLE> Hello World! </TITLE> m q`EMOH
</HEAD> t&SC>8M<
<BODY> l)glT]G3+
<p>Hello World!</p> t]~Lo3
</BODY> `5[d9z/ 6
</HTML> HXTBxh
[lqwzW{(UN
'*5I5'[ X,
HQ9+ LFCcV<~
H C|"h]
gp:,DC?(
Y{TzN%|LV
INTERCAL m
?a&XZ
PLEASE DO ,1 <- #13 Uj)~ >V'
DO ,1 SUB #1 <- #238 ,c@^u6a
DO ,1 SUB #2 <- #112 *v[WJ"8@
DO ,1 SUB #3 <- #112 gv}Esps
R
DO ,1 SUB #4 <- #0 z O
DO ,1 SUB #5 <- #64 8I)66
DO ,1 SUB #6 <- #238 I_('Mr)
DO ,1 SUB #7 <- #26 1 f ]04TI
DO ,1 SUB #8 <- #248 h&+dIk\[3
DO ,1 SUB #9 <- #168 $!L'ZO1_r
DO ,1 SUB #10 <- #24 3[E3]]OVa
DO ,1 SUB #11 <- #16 bu[v[U4
DO ,1 SUB #12 <- #158 kzG mDi
DO ,1 SUB #13 <- #52 nk,X6o9%
PLEASE READ OUT ,1 njveZav
PLEASE GIVE UP r^mP'#
8,p nm
XO+^q9
Java l+'@y (}Q
public class Hello K14e"w%6rs
{ .(OFYK<
public static void main(String[] args) ZR<T\w
{ $DZ\61
System.out.println("Hello, world!"); 2r2qZ#I}
} P%A^TD|
} IWvLt
.az+'1
vT V'D&x2
JSP 3%Z:B8:<