“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。 Rm
RV8 WJ6
l*eA
?Qz
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》。 %[0"[ <1a
kxP6#8*:
以下是用不同语言写成的Hello World程序的几个例子: yU\|dL
Ada %guot~S|
with Ada.Text_Io; use Ada.Text_Io; YP7<j*s8
procedure Hello is g N[r*:B
begin #wo_
Put_Line ("Hello, world!"); 4eKJ\Q=nX5
end Hello; ;#+#W+0
[kXe)dMX8
= FE,G*
汇编语言 $$4% .J26Z
kO4C^pl"v
x86 CPU,DOS,TASM 4
qnQF]4
MODEL SMALL ]u:NE'0Xy
IDEAL 5u&jNU5m_
STACK 100H mB\5bSFY`
u,C-U!A
DATASEG b&ADj8cKC
HW DB 'Hello, world!$' vH=I#Ajar
+X< Z
43
CODESEG Z`
Aiw."|
MOV AX, @data (*EN! -/
MOV DS, AX Ii9vA ^53
MOV DX, OFFSET HW D,7! /u'
MOV AH, 09H #8`G&S*
INT 21H CI,-qi
MOV AX, 4C00H V;z?m)ur
INT 21H BP7_o63/G
END ka5>9E
^'h~#7s
-{<%Wt9
x86 CPU,GNU/Linux,NASM B)(A#&nrb
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 7}*5Mir p
;Enter this into "hello.asm" then type: C?|gf?1p
;"nasm -f elf hello.asm" >!$4nxq2>
;"ld hello.o -o hello" UeRenp
;"./hello" Y5;:jYk#<_
q q`UvU
section .data ;data section declaration 8'YL!moG|
msg db 'Hello World!',0AH y0Tb/&xN
len equ $-msg ;string length LC}]6
(]pQ.3
section .text ;code section declaration ^8 z*f&g
global _start ;entry point (start of execution) |k)u..k{>
_start: mov edx,len ;string length CkP!4^J qQ
mov ecx,msg ;string start xS.0u"[
mov ebx,1 ;file handle: stdout u/MIB`@,
mov eax,4 ;sys_write * T-XslI
int 80h ;kernel system call 4uv }6&R
&O'yhAP] j
mov ebx,0 ;return value > ):b AfI
mov eax,1 ;sys_exit R38
w!6{
int 80h ;kernel system call l})uYae/
n;MoMGnPh,
(d ( whlF
x86 CPU,Windows,MASM32 QCjmg5bf'7
.386 CN >q`[!
.model flat,stdcall `*slQ}i
option casemap:none | zA ey\
;Include 文件定义 cB<Zez
include windows.inc gt
?&!S^
include user32.inc T.xW|Iwx
includelib user32.lib .OjJK?
include kernel32.inc :S%|^QAN
includelib kernel32.lib w90y-^p%
;数据段 "?Y0Ng[
.data ,Pl[SMt!
szCaption db 'A MessageBox!',0 7(oxmv}#Q
szText db 'Hello,world!',0 O`2%@%?I
;代码段 Cjd +\7#G
.code S-1}3T%
start: ,^'Y7"
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK KL xg
invoke ExitProcess,NULL \UiuJ+
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> H: U_k68
end start "XH]B
)I*V('R6|
86I".R$d
AWK I[R?j?$}>
BEGIN { print "Hello, world!" } E{FN sa
'Hq}h)`
xNx!2MrR;
BASIC *BF1Sso
传统版BASIC(例如GWBASIC): 2^juLXc|R
zgO?%O
10 PRINT "Hello, world!" ^{bP#f
20 END {d3r>Ub)7d
=\q3;5[
或在提示符输入: rsIjpPa
^RY_j>i
?"Hello, world!":END UgUW4x'+
lKm?Xu'yH
现代版BASIC(例如Quick BASIC): 5ogbse"
h rZ\ O?j
Print "Hello, world!" !?KY;3L:
%xY'v$
%
以下的语句在Quick BASIC中同样有效: Obw uyhjQ
=]D##R
? "Hello,world!" I*0W\Qz@
%Jw;c`JM
;DRJL
BCPL <=0_[M
GET "LIBHDR" ?1[go+56X
Wy|=F~N
LET START () BE rm2TWM|
$( KLoHjBq
WRITES ("Hello, world!*N") 8]0R[kjD
$) 8*|@A6ig
2Ay2
G-
q k !Q2W
Befunge O ~"^\]\
"!dlrow olleH">v N!P* B$d
, ^+}<Q#y-
^_@ ,,i;6q_f
WjA)0HL(
\tQRyj\|
Brainfuck &"d4J?io`
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<
LDbo
+++++++++++++++.>.+++.------.--------.>+.>. ]ao]?=q C
\ii^F?+b
x*_c'\F|
C )EO$JwQ
#include <stdio.h> 4YdmG.CU
/423!g0Q
int main(void) :CV&WP
{ aZmSCi:&'
printf("Hello, world!\n"); 2Qn%p[#n
return 0; `B^?Za,xN
} &<L+;k~P%
ost~<4~
;8UNM
C++ `f b}cJUa
#include <iostream> s'i1!GNF
B
thkL<
int main() 9g>ay-W[(
{ 0C0iAp
std::cout << "Hello, world!" << std::endl; BB~Qs
return 0; Ha;^U/0|
} 73P(oVj<
YRB,jwne
9=h A#t.#
C++/CLI /*st,P$"
int main() }bHdU]$}
{ =_TCtH
System::Console::WriteLine("Hello, world!"); ;zs4>>^>
} u dH7Q&"
Vj`9j. 5
+]B^*99
C# (C Sharp) YKj7~yK?
class HelloWorldApp uYJ6"j
{ dGZVWEaPfx
public static void Main() 'os-+m@
{ _sw,Y!x%dF
System.Console.WriteLine("Hello, world!"); \<V{6#Q=
} uTOL
} .\i9}ye
y|c]r!A
_e/vw:
COBOL m,Os$>{Ok
IDENTIFICATION DIVISION. .(3B}}gB>
PROGRAM-ID. HELLO-WORLD. W4T>@b.
(3 B;
V
ENVIRONMENT DIVISION. ]W]Vkkg]
sgFpZk
DATA DIVISION. E@t^IGDr
ij%\ld9kd
PROCEDURE DIVISION. MB:E/
DISPLAY "Hello, world!". yl)}1DPP
STOP RUN. MX
qH
RaG-9gujI
YW}1Mf=_
Common Lisp z[V|W
(format t "Hello world!~%") .LdLm991,Y
kE/>Ys@w
C S+6!F]
DOS批处理 wB"&K;t
@echo off 4km=KOx[
echo "Hello, world!" c7S<ex,
f |aO9w
/ [:@j+n\
Eiffel 7@MVInV9
class HELLO_WORLD oO!@s`
S+_}=25
creation tOS%.0W5J
make HuCH`|v-
feature _! \X>rfz
make is !PJ;d)\T
local '^n2]<
io:BASIC_IO ^uC1\!Q1
do ZA+$ZU^
!!io J?u",a]|H"
io.put_string("%N Hello, world!") <#LHL
end -- make 5"k_Ms7R,
end -- class HELLO_WORLD _qM'm^z5
NC|&7qQ
Yw4c`MyL
Erlang J3g>#N]='(
-module(hello). V_(lZDjh*
-export([hello_world/0]). U3az\E)HV
8Q?)L4.]
hello_world() -> io:fwrite("Hello, World!\n"). p%_r0
DBbmM*r
-Z)$].~|t
Forth ct fKxGH
." Hello, world!" CR DSD#',
T&6{|IfM_
ngn%"xYX
Fortran qqLmjDv
WRITE(*,10) ok2$ p
10 FORMAT('Hello, World!') 9^)ochY3
STOP (Sv 7^}j
END !G Z2|~f9
_hK7hvM>
o~ 2bk<]z
HTML +.mIC:9
<HTML> !nC Z,
<HEAD> NhS0D=v6
<TITLE> Hello World! </TITLE> ~`u?|+*BO
</HEAD> c-n'F+fZ
<BODY> ^s_E |~U
<p>Hello World!</p> _|x%M}O},
</BODY> %t`a-m
</HTML> hQ#'_%:
k-Le)8+b
) yRC$7I
HQ9+ t-3wjS1v
H V
:*GG+4
?20y6c <
;M>0,
INTERCAL C5*j0}
PLEASE DO ,1 <- #13 P2!@^%o
DO ,1 SUB #1 <- #238 wwmMpK}f
DO ,1 SUB #2 <- #112 LPvyfD;Zy
DO ,1 SUB #3 <- #112 *.~hn5Y|?
DO ,1 SUB #4 <- #0 )j]S;Mr
DO ,1 SUB #5 <- #64 Lb{~a_c
DO ,1 SUB #6 <- #238 m{I_E
G
DO ,1 SUB #7 <- #26 6^s]2mMfk
DO ,1 SUB #8 <- #248 7a->"W
DO ,1 SUB #9 <- #168 8pg?g'A~}
DO ,1 SUB #10 <- #24 Zj[Bm\8
DO ,1 SUB #11 <- #16 )|q,RAn
DO ,1 SUB #12 <- #158 RHz'Dz>0
DO ,1 SUB #13 <- #52 VsNqYFHes&
PLEASE READ OUT ,1 ?so3Kj6H
PLEASE GIVE UP T<mk98CdE
'[{M"S
4ehajK
Java &:nWZ!D
public class Hello mAX]m 1s
{ )U`H7\*)
public static void main(String[] args) fI t:eKHr
{ pzCD'
!*
System.out.println("Hello, world!"); uZW
? 0W
} U]@t\T3W
} 4Q,HhqV'
-~p@o1k0
(TDLT^
JSP NV^ktln
<% (IAl$IP63s
out.print("Hello, world!"); k'xnl"q
%> <xOpm8
8L|rj4z<#
7'xT)~*$4
MIXAL 7"Zr:|$U
TERM EQU 19 the MIX console device number e*jn7aya
ORIG 1000 start address ]9]3=;b>
START OUT MSG(TERM) output data at address MSG ghx8dX}
HLT halt execution lva]jh2
MSG ALF "MIXAL" ,D
[
ALF " HELL" LyS139P$
ALF "O WOR" f>;5ZE4Zu
ALF "LD " tI{pu}/"#
END START end of the program +pnT6kU|
)><cL:IJ}S
t'Nu^_#
Nuva |0b$60m$!t
<..直接输出..> GQ$0`?lp
Hello, world! aGr(djD
(t&P.N/
<..或者..> /#G^?2oM
O (tcu@vfl
<. BO#fzq%
// 不带换行 fp:j~a>E
? "Hello, world!" qF%wl
AA^3P?iD
// 或者 QtW5;A-h
_g0
qpa
// 带换行 wpb6F '
?? 'Hello, world!' ePrbG4xv
.> #:"\6s
\I/l6H>o3
`g6ZhG:W
OCaml H]mY 6D51"
let main () = A&Ut:OiA
print_endline "Hello world!";; '4L
i
WvAl!^{`
RIC'JLWQ
Pascal c_kxjzA#
program Hello; nR!qolh
begin )
ok_"wB
writeln('Hello, world!'); s><RL]+{G+
end. +7sdQCO(Co
&julw;E
WLDt5R
Perl h}g _;k5R
#!/usr/local/bin/perl >Djv8 0
print "Hello, world!\n"; sq@Eu>Ng(X
5\S)8j `8
4T Gg`$e;
PHP .Uh-Wi[
<?php w44{~[0d4
print("Hello, world!"); sog?Mvoq
?> #v89`$#`2
SdnqM`uFo
aS'G&(_
Pike rw
^^12)
#!/usr/local/bin/pike :uu\q7@'
int main() qV/"30,K
{ *xkbKkm
write("Hello, world!\n"); N{q5E,}
return 0; '"GdO;}&
} .J&NM(qeZ
{SqY77
ZZ] /9oiF%
PL/I E$F)z
Test: procedure options(main); [\ @!~F{
declare My_String char(20) varying initialize('Hello, world!'); YZr^;jfP
put skip list(My_String); b1\z&IdC
end Test; QEQ8gfN9>
Kcsje_I-M
/fBZRdB
Prolog wI#rAx7f-
goal @wl80v
write("hello,world!"). +M-' K19
E4T?8TO$o%
L((z;y>q|
Python wAF>C[ <\
#!/usr/local/bin/python 96}/;e]@
print "Hello, world!" j<"0ym)A
(J\D"4q
b?B"u^b!
REXX vTh-I&}:
say "Hello, world!" ~Xh(JK]
TG{=~2
p%xo@v(
Ruby {|%5}\%
#!/usr/bin/ruby [|ky~sRr
print "Hello, world!\n" NO`LSF
tN3Xn]
AY[7yPP
Scheme [9'5+RXw3
(display "Hello, world!") L6r&