“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。 W1~0_;
4RO}<$Nx}
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》。 4s-!7
23PGq%R
以下是用不同语言写成的Hello World程序的几个例子: **%37
Ada RZLq]8pM
with Ada.Text_Io; use Ada.Text_Io; $4LzcwG
procedure Hello is o-5TC
begin [,Gg^*umS
Put_Line ("Hello, world!"); `yyG/l
end Hello; 6x`t{g]f,
QRUz`|U
[0!( xp^
汇编语言 01]f2.5
K-v#.e4
x86 CPU,DOS,TASM D*jM1w_`
MODEL SMALL pi(m7Ci"
IDEAL Sjqpec8
STACK 100H 9[4xFE?|
Wr
4,YQM
DATASEG XFl6M~ c
HW DB 'Hello, world!$' }bxs]?OW>
c 9Mz]1@f
CODESEG 7Q 3 k7
MOV AX, @data ?,z}%p
MOV DS, AX oH@78D0A
MOV DX, OFFSET HW |yCMt:Hk
MOV AH, 09H 6k%f
INT 21H e~OpofJNb
MOV AX, 4C00H 2y4bwi
INT 21H *dQSw)R
END 5pX6t
f*Hr^b}`8
z{
dEC %
x86 CPU,GNU/Linux,NASM &C}*w2]0S
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). =_CzH(=f#
;Enter this into "hello.asm" then type: "oyo#-5z
;"nasm -f elf hello.asm" wwqEl(
;"ld hello.o -o hello" Wtnfa{gP%
;"./hello" F?0Ykjh3
OUnA;_
section .data ;data section declaration pa+hL,w{6
msg db 'Hello World!',0AH #!=tDc
&
len equ $-msg ;string length VbYdZCC
ZJoM?g~WFI
section .text ;code section declaration }f ?y*
H
global _start ;entry point (start of execution) mH(:?_KrS-
_start: mov edx,len ;string length zLQx%Yg!
mov ecx,msg ;string start }MySaL>
mov ebx,1 ;file handle: stdout w0.
u\
mov eax,4 ;sys_write + {]j]OP
int 80h ;kernel system call k$Vl fQ'+
]Ljf?tk
mov ebx,0 ;return value UKGPtKE<
mov eax,1 ;sys_exit *~`(RV
int 80h ;kernel system call h[ ZN+M
i8p6Xht
jXJyc'm7
x86 CPU,Windows,MASM32
7GGUV
.386 A/(a`"mK|'
.model flat,stdcall 42{~Lhxt
option casemap:none gYj'(jB
;Include 文件定义 7zMr:JmV
include windows.inc %T[]zJ(
include user32.inc BtZ yn7a
includelib user32.lib sW$XH1Uf#
include kernel32.inc 0RfZEG)
includelib kernel32.lib u*R_\*j@
;数据段 c-w)|-ac.
.data z:O8Ls^\T
szCaption db 'A MessageBox!',0 )7@0[>
szText db 'Hello,world!',0 )oZ dj`
;代码段 lZ0 =;I
.code *p d@.|^)m
start: 3`HV(5U[
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK gw(z1L5
n
invoke ExitProcess,NULL K3C <{#r
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> <@}9Bid!o
end start al0L&z\
jIyQ]:* p
Kw}'W
8` c
AWK nN;u,}e
BEGIN { print "Hello, world!" } zs;JJk^
(H]AR8%W
/reX{Y
BASIC u2I Cl
传统版BASIC(例如GWBASIC): BUFv|z+H
=a!=2VN9y
10 PRINT "Hello, world!" & kIFcd@
20 END :&Nbw
$]1=\I
或在提示符输入: 6*?F @D2&
$>gFf}#C
?"Hello, world!":END E^PB)D(.
i4Jc.8^9$
现代版BASIC(例如Quick BASIC): oU|c.mYe
|qLh5Ty
Print "Hello, world!" 0x7'^Z>-oe
$kgVa^
以下的语句在Quick BASIC中同样有效: e!`i3KYn"
!k%#R4*>
? "Hello,world!" 3$w65=
^aQ"E9
g}i61(
BCPL PH"%kCI:
GET "LIBHDR" Ru XC(qcq
=;k|*Ny
LET START () BE neh(<>
$( "b[5]Y{
U
WRITES ("Hello, world!*N") @o^Ww
$) ;jPXs
<VcQ{F
MDN--p08
Befunge BVm0{*-[|
"!dlrow olleH">v DlT{`
, 2:R+tn(F
^_@ *I'yH8Fcn
kT?J5u_o
v<;Md-<
Brainfuck Jwp7gYZ
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 'S~5"6r
+++++++++++++++.>.+++.------.--------.>+.>. ~
1 pr~
(t.Nk[
x"(KBEK~
C JRFtsio*
#include <stdio.h> +V+a4lU14
/=h` L,
int main(void) p'fYULYE
{ {$r[5%L\H
printf("Hello, world!\n");
5IN(|B0
return 0; F?cK-.
} }Lv;!
9l,oP?
n(Uyz`qE
C++ :4s1CC+@\
#include <iostream> _U0f=m
1}37Q&2
int main() M;NX:mX9
{ 6RM/GM
std::cout << "Hello, world!" << std::endl; Ie^l~Gb
return 0; f5k6`7Vj]
} 7KPwQ?SjT
$N\Ja*g
F"<vaqT2
C++/CLI ccnK#fn v
int main() [Yyk0Qv|4
{ l@\FWWQ
System::Console::WriteLine("Hello, world!"); Tr|JYLwF
} *kVV+H<X|b
b\ PgVBf9
KgG4*<
C# (C Sharp) 8_tQa^.n\
class HelloWorldApp ':}\4j&{E
{ 2Hdu:"j
public static void Main() ]d`VT)~vje
{ !+ njS
System.Console.WriteLine("Hello, world!"); DJ%PWlK5
} |' .
} &?vgP!d&M
i&k7-<
s7EinI{^
COBOL L(o15
IDENTIFICATION DIVISION. V,9cl,z+
PROGRAM-ID. HELLO-WORLD. 8D].MI^
_wOt39e&
ENVIRONMENT DIVISION. iOdpM{~*
fQ98(+6
DATA DIVISION. +O5hH8<&b
V+~Nalm O
PROCEDURE DIVISION. +>9Q/E
DISPLAY "Hello, world!". ap~^Ty<>
STOP RUN. Ewm9\qmg
GF
WA>5n'
<ih[TtZ
Common Lisp !-Y3V"
(format t "Hello world!~%") Ve=b16H
}-fl$j?9E
" Jr-J#gg
DOS批处理 &[SC|=U'M
@echo off kN>!2UfNS
echo "Hello, world!" `"~%bS
QM]YJr3rE
ZC}QId
Eiffel T)})
pt!V
class HELLO_WORLD `lPfb[b
ipILG4
creation 5-G@L?~Vw
make D6^6}1WI
feature wPl%20t
make is pmilrZmm]
local \;-|-8Q
io:BASIC_IO 4X$Qu6#i
do -^57oU
!!io qw8Rlws%
io.put_string("%N Hello, world!") n(|^SH4$b
end -- make %IRi1EmN8
end -- class HELLO_WORLD o]:9')5^
4&f3%eTi
0RK!/:'
Erlang LK"69Qx?5q
-module(hello). * 4Izy14e
-export([hello_world/0]). yZ`wfj$Jj
Y<rU#Z #T
hello_world() -> io:fwrite("Hello, World!\n"). Uwi7)
q]M0md
X76e&~
Forth }T$p)"
." Hello, world!" CR ~,~eoW7
k'"%.7$U!
@R
6@]Dm
Fortran U?=Dg1
WRITE(*,10) 9E tz[`|
10 FORMAT('Hello, World!') qv*^fiT
STOP e]tDy0@
END h@h! ,;
2Gdd*=4z
RGU\h[
HTML r4f~z$QK
<HTML> TU7'J
<HEAD> `#gie$B{
<TITLE> Hello World! </TITLE> ##o#eZq:"
</HEAD> ow#1="G,=
<BODY> 42{:G8
<p>Hello World!</p> ; Hd7*`$
</BODY> 1r7y]FyH$
</HTML> @]#1(9P
w-{c.x
p"Z-6m~
HQ9+ eN~=*Mn(za
H 3{h_&Gbo'D
!L8#@BjU
$pudoAO
INTERCAL }{<
'8J.R
PLEASE DO ,1 <- #13 So
5N5,u@=
DO ,1 SUB #1 <- #238 PY0j9$i?
DO ,1 SUB #2 <- #112 o+9j?|M
DO ,1 SUB #3 <- #112 [=_jYzD,j|
DO ,1 SUB #4 <- #0 6u}</>}
DO ,1 SUB #5 <- #64 orvp*F{7[H
DO ,1 SUB #6 <- #238 $2el&I
DO ,1 SUB #7 <- #26 ;ZG\p TCA
DO ,1 SUB #8 <- #248 65m"J'
DO ,1 SUB #9 <- #168 ?NP1y9Y]i
DO ,1 SUB #10 <- #24 rc>6.sM
%
DO ,1 SUB #11 <- #16 \B
7tX
DO ,1 SUB #12 <- #158 )];K .zP
DO ,1 SUB #13 <- #52 5P$4 =z91
PLEASE READ OUT ,1 Ip]KPrwp
PLEASE GIVE UP (%:c#;#
9<)NvU^-r
(Clkv
Java 4 N7^?
public class Hello zkdetrR
{ :#~j:C|
public static void main(String[] args) ++#5
{ {GcO3G#FZ
System.out.println("Hello, world!"); ,i@:5X/t
} Z87|Zl
} >6pf$0
Zoc0!84<z
EUgs6[w 4
JSP zZC9\V}R
<% V,?yPi$#E
out.print("Hello, world!"); o\)F}j&b#=
%> O5t[
z%LIX^q9
HgkC~'
MIXAL E`k@{*Hn&
TERM EQU 19 the MIX console device number qWKAM@
ORIG 1000 start address ]P2"[y
START OUT MSG(TERM) output data at address MSG $"&{aa
HLT halt execution BFJnV.0M!
MSG ALF "MIXAL" [R7Y}k:9U
ALF " HELL" s&!a
ALF "O WOR" ?8Cq{
ALF "LD " k,F6Tx
END START end of the program aCLq k'
A6iq[b]
Nl(3Xqov
Nuva fe#\TNeQJ[
<..直接输出..> D+7Rz_=
Hello, world! q=qcm`ce
Mzw X>3x
<..或者..> H ?y,ie#u
*``JamnSO
<. Q( {
r@*g
// 不带换行 m<qJcZk
? "Hello, world!" =k:,qft2
,$+V
// 或者 yN
s,Ll~
Vr1<^Ib
// 带换行 e2W".+B1
?? 'Hello, world!' r!a3\ep
.> H_<C!OgR
f &wb
"{Eta
OCaml \<6CZ
let main () = usL*
x9i
print_endline "Hello world!";; f[^Aw(o
84 pFc;<
=+MPFhvg!
Pascal .JiziFJ@mj
program Hello; M6-&R=78K
begin x`IEU*z#
writeln('Hello, world!'); %O;bAC_M
end. n`&U~s8w
x6ARzH\
2q4<t:!
Perl PO7Lf#9]
#!/usr/local/bin/perl /mu*-,aeX
print "Hello, world!\n"; JyOo1E.
c+nq] xOs'
0aa&m[Mk
PHP (%W&4a1di
<?php ^7KH _t8
print("Hello, world!"); g5QZ0Qkj
?> x&T [*i
WoRZW%
y(pks$
Pike "s_lP&nq
#!/usr/local/bin/pike -JjM y X
int main() `&sH-d4v
{ E5lBdM>2
write("Hello, world!\n"); GMl;7?RA
return 0; - kwXvYu\
} _ T):G6C8
-rli(RR)|
SHo$9+
PL/I /&+tf*
Test: procedure options(main); vVe';|8v
declare My_String char(20) varying initialize('Hello, world!'); -f>%+<