“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。 l;h5Y<A%?
$^W|@et{
]
将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 pMkM@OH
gKRlXVS
以下是用不同语言写成的Hello World程序的几个例子: |j4;XaG)
Ada _+ >V(,{G
with Ada.Text_Io; use Ada.Text_Io; W&2r{kCsQ
procedure Hello is MgHO WoF
begin ;p:CrFv
Put_Line ("Hello, world!"); \$,8aRT>#U
end Hello; ,?!MVN-
%%lJyLq'Vk
9dp1NjOtAc
汇编语言 #YSFiy:+r_
}jYVB|2
x86 CPU,DOS,TASM <M\#7.](
MODEL SMALL @y,>cDg
IDEAL E-#C#B
STACK 100H b3q&CJ4|
%\!@$]3q
DATASEG o1[[!~8e
HW DB 'Hello, world!$' xxpzz(S ]A
8>(/:u_x
CODESEG A9LVS&52
MOV AX, @data mh#_lbe'
MOV DS, AX au/5`
MOV DX, OFFSET HW 'Ge8l%p
MOV AH, 09H GsIqUM#R
INT 21H JY$;m3h
MOV AX, 4C00H JC7:0A^
INT 21H H)5" <=]
END Oo9'
C%"aj^u
Om2w+yU
x86 CPU,GNU/Linux,NASM Y\E7nll:.
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ~FnY'F<35
;Enter this into "hello.asm" then type: `Yyi;!+0
;"nasm -f elf hello.asm"
`dIwBfg_
;"ld hello.o -o hello" aX.//T:':?
;"./hello" 6e"Lod_ L
U Fyk%#L
section .data ;data section declaration c=p!2jJ1K~
msg db 'Hello World!',0AH "FLiSz%ME
len equ $-msg ;string length &PFK0tY
)%HIC@MM6
section .text ;code section declaration L!~ap
global _start ;entry point (start of execution) {}BAQ9|q
_start: mov edx,len ;string length LB^xdMXi
mov ecx,msg ;string start ]qiX"<s>~C
mov ebx,1 ;file handle: stdout !'> ,37()
mov eax,4 ;sys_write FPu$N d&\
int 80h ;kernel system call 1?,C d
'-P+|bZW4
mov ebx,0 ;return value 2h1P!4W85
mov eax,1 ;sys_exit ?B<.d8i
int 80h ;kernel system call G}@a]EGm
2fP;>0?
&@'+h*
b
x86 CPU,Windows,MASM32 Tb{RQ?Nw'
.386 }|l7SFst
.model flat,stdcall i_av_I-
option casemap:none mBQpf/PG
;Include 文件定义 \Npvm49
include windows.inc 593!;2/@
include user32.inc @IOl0db
includelib user32.lib 3Qu-X\
include kernel32.inc dEam|
includelib kernel32.lib sk@aOv'*(
;数据段 d"thM
.data nY,LQ0r
szCaption db 'A MessageBox!',0 |Gr@Mi5
szText db 'Hello,world!',0 P[r$KGz
;代码段 {HjJ9ZGQ
.code c!mMH~#
start: ~w}=Oby'y
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK x\YVB',h
invoke ExitProcess,NULL <Ik5S1<h$H
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> c,#Nd@
end start ){KrBaGa4
.p(r|5(b
f,ql8q(|J
AWK ;Pvnhy
BEGIN { print "Hello, world!" } 18]Q4s8E
EBpg
a >k9&
w
BASIC yGH')TsjD
传统版BASIC(例如GWBASIC): +P.JiH`\=
l`a_0
10 PRINT "Hello, world!" "e/"$z'ca
20 END =`l><
"+hUt
或在提示符输入: fyxc4-D
^1Bk*?Yx\x
?"Hello, world!":END y (=0
|7!B k$(vA
现代版BASIC(例如Quick BASIC): $)'LbOe
qos/pm$&i
Print "Hello, world!" \\35}
9
XnRm9%
以下的语句在Quick BASIC中同样有效: ^MVOaV65
o5G]|JM_
? "Hello,world!" *p|->p6,u
SKGnx
!e('T@^u6u
BCPL ,I:[-|Q
GET "LIBHDR" Wj, {lJ,
;HiaX<O!
LET START () BE -?Cu-'
$( P@Vs\wAT
WRITES ("Hello, world!*N") C#RueDa.
$) Pd~z%VoO
U\>k>|Jr{
".?y!VY
Befunge \U'*B}Sz
"!dlrow olleH">v u(JuU/U
, 7<k@{xI/
^_@ 6` 3kNk;
_:JV-lM
<80M$a
g
Brainfuck 1 K]
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< ML%JTx0+Z
+++++++++++++++.>.+++.------.--------.>+.>. 0UQ
DB5u
m`jGBSlw_
#q8/=,3EG
C _,w*Rv5=
#include <stdio.h> FPEab69
Ad4-aWH
int main(void) ^$<:~qq!
{ }{v0}-~@
printf("Hello, world!\n"); 4 &0MB>m
return 0; ,,-j5Y
} M->#WGl\B
f|2QI~R
~O
4@b/!4
C++ 3w! NTvp
#include <iostream> z'0
=3
S(: |S(
int main() Az/P;C=
{ k0xm-
std::cout << "Hello, world!" << std::endl; @"m+9ZY
return 0; 9xL`i-7]
} 2-^['R
w7~&Xxa/
fm Fs
C++/CLI
.L^F4
int main() Hq,znRz~`
{ ;9qwB
System::Console::WriteLine("Hello, world!"); !0cb f&^:
} xww\L
&y
OGW0lnQ/
u2*."W\
C# (C Sharp) w# ;t$qz}
class HelloWorldApp l!IN #|{(
{ Ub[UB%(T
public static void Main() OO;I^`Yn
{ |2I
p*
System.Console.WriteLine("Hello, world!"); kZ!&3G9>-
} }m S+%w"j
} (R!.=95@
)F6p+i="
C 6d#+
COBOL zZV9`cqZ{
IDENTIFICATION DIVISION. XL(2Qk
PROGRAM-ID. HELLO-WORLD. tz2$j@!=
/q^_
'Lp
ENVIRONMENT DIVISION. `U{#;
w^S]HzMd
DATA DIVISION. :{?Pq8jP
,MD>Jx|
PROCEDURE DIVISION. YwJ<0;:+hS
DISPLAY "Hello, world!". :oJ!9\5
STOP RUN. UQjZhH
RI]x=
$EZr@n
Common Lisp h5[.G!
(format t "Hello world!~%") MA v-#
'@#l/9
={~A}
X01
DOS批处理 dz?Ey~;M
@echo off Ev&aD
echo "Hello, world!" ^1XnnQa
C3; d.KlV
R#/0}+-M
Eiffel Qa1G0qMEIF
class HELLO_WORLD Vje LPbk)
&lW~ot1,
creation P2 +^7x?
make xic&m5j
m
feature Q5;EQ.#
make is ?<soX8_1
local L(BL_
io:BASIC_IO AUR{O
do >F/5`=/'h
!!io j7C&&G q
io.put_string("%N Hello, world!") g+=f=5I3
end -- make @T{I;8S
end -- class HELLO_WORLD 2X=*;r"{J
i\\,Z
L
MUp{2_RA
Erlang iRL|u~bj
-module(hello). q)]S:$?BT
-export([hello_world/0]). @ oFuX.
u~27\oj,
hello_world() -> io:fwrite("Hello, World!\n"). ~<=wTns!
8uB6C0,6?
,
ins/-3
Forth h8HA^><Xr
." Hello, world!" CR z4(Q.0x7
\p!mX|
BR0P :h
Fortran lAx8m't}6
WRITE(*,10) TzsNhrU{
10 FORMAT('Hello, World!') ( z.\,M
STOP &P>a
END SY+$8^
xx,|n
\05 n$.
HTML Z'y:r2{ql
<HTML> s=)1:jYk
<HEAD> g]}E1H6-
<TITLE> Hello World! </TITLE> >\ PNKpn{
</HEAD> n}q/:|c
<BODY> N#vV;
<p>Hello World!</p> ;3N>m|?D=
</BODY> m H&WoL<K
</HTML> h?&S*)1
],Y+|uX->
gOn^}%4.I
HQ9+ (%|L23
H 8MCSU'uQ
OyTp^W`&
<{A |Xs
INTERCAL UC?i>HsJrX
PLEASE DO ,1 <- #13 (k>I!Z/&2
DO ,1 SUB #1 <- #238 M!]g36h[
DO ,1 SUB #2 <- #112 I#](mRJ6
DO ,1 SUB #3 <- #112 gz`P~7-w:
DO ,1 SUB #4 <- #0 !T26#>mV
DO ,1 SUB #5 <- #64 1&JB@F9!
DO ,1 SUB #6 <- #238 _6MNEoy?
DO ,1 SUB #7 <- #26 _<;westq
DO ,1 SUB #8 <- #248 {@3p^b*E)1
DO ,1 SUB #9 <- #168 8Sg:HU\
DO ,1 SUB #10 <- #24 > 0NDlS%Q:
DO ,1 SUB #11 <- #16 tfq; KR
DO ,1 SUB #12 <- #158 \ dZD2e4
DO ,1 SUB #13 <- #52 )R"deb=s
PLEASE READ OUT ,1 Z$ Mc{
PLEASE GIVE UP O.wk*m!9
-'::$
{
)Xd2qbi
Java H iDL:14
public class Hello ~er4w+"
{ 2W=am_\0e.
public static void main(String[] args) %z AN@
{ .5?Md
System.out.println("Hello, world!"); >tVD[wVF0
} -nC!kpo
} -$5nqaK?
? Glkhf7(
GbbD)
JSP e=EM07z
<% L9(!L$
out.print("Hello, world!"); NW@guhK.
%> .eM
A*C~n
X4:SH>U!
s4Y7x.-
MIXAL BJ7m3[lz
TERM EQU 19 the MIX console device number &&{_T4
ORIG 1000 start address [[9XqD]
START OUT MSG(TERM) output data at address MSG mRC6m
K>
HLT halt execution \j3XT}
MSG ALF "MIXAL" 7Ys\=W1
ALF " HELL" eXZH#K7S#
ALF "O WOR" A;#GU`
ALF "LD " $sR-J'EE!
END START end of the program 4|DGQ
MbeO(Q
Xw[|$#QKM
Nuva XveG#oyiU
<..直接输出..> 6?(vXPpT$
Hello, world! \Dn
an5H/
MnymV;y"
<..或者..> Y'%k
G5nF
G/5]0]SO
<. m;"dLUb
// 不带换行 f1UGDC<p9
? "Hello, world!" &nEQ