“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。 "CBe$b4
)P@t,mxW/
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》。 s2riayM9/
XKLkJZN
以下是用不同语言写成的Hello World程序的几个例子: [GZ%K`wx
Ada E"&fT!yi
with Ada.Text_Io; use Ada.Text_Io; z'3
procedure Hello is 2 Q,e1'=
begin N|?"=4Z?
Put_Line ("Hello, world!"); |/[?]`
end Hello; BftW<1,U^
0J z'9
` *x;&.&v
汇编语言 I/rq@27o
!.H< dQS
x86 CPU,DOS,TASM $0V<wsVM
MODEL SMALL O8TAc]B
IDEAL =K~<& l8
STACK 100H BZ<Q.:)
4]u53`
DATASEG 5Q,#Co
HW DB 'Hello, world!$' /`>BPQH`}
<H`&Zqqk
CODESEG xq-R5(k
MOV AX, @data 1om :SHw
MOV DS, AX +'Pf|S
MOV DX, OFFSET HW ihBlP\C
MOV AH, 09H L0Bcx|)"$`
INT 21H h)7{Cj
MOV AX, 4C00H ;'NB6[x
INT 21H %fnL
END 6%~ Z^>`N
(eS4$$g
v1<3y~'f
x86 CPU,GNU/Linux,NASM M%5qx,JQY
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). LJ`*&J
;Enter this into "hello.asm" then type: R2yiExw<
;"nasm -f elf hello.asm" (e6JI]tz{
;"ld hello.o -o hello" Eb{Zm<TP
;"./hello" Tn<
<i
%WiDz0o
section .data ;data section declaration 5Jh=${
msg db 'Hello World!',0AH ='a[(C&Y
len equ $-msg ;string length e<6fe-g9;
`WGT`A"
section .text ;code section declaration x
hBlv
global _start ;entry point (start of execution) "VR>nyG%
_start: mov edx,len ;string length =<MSM\Rb
mov ecx,msg ;string start r ) ;U zd
mov ebx,1 ;file handle: stdout <R582$( I
mov eax,4 ;sys_write {Y6U%HG{{r
int 80h ;kernel system call WM$}1:O
c+,F)i^`
mov ebx,0 ;return value ozwPtF5
mov eax,1 ;sys_exit "MQy>mD6
int 80h ;kernel system call UUJbF$@;
oP;"`^_
/ CEn yE/
x86 CPU,Windows,MASM32 8+5#FC7
.386 YAQ]2<H
.model flat,stdcall yaza
option casemap:none P~`gWGC}
;Include 文件定义 $OB 2ZS"
include windows.inc 1`J-|eH=Q
include user32.inc XFKe6:
includelib user32.lib ad1 I2
include kernel32.inc uMKO^D
includelib kernel32.lib :6~Nq/hZB
;数据段 ]=!wMn* *
.data ?~c=Sa-
szCaption db 'A MessageBox!',0 k#X~+}N^
szText db 'Hello,world!',0 f]Z%,'1^
;代码段 gpDH_!K
.code y:u7*%"
start:
b5lZ| |W.
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK k=!lPIx
invoke ExitProcess,NULL s:ig;zb
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> r0t4\d_&
end start ^=`7]E [p
1=:=zyEEo
x`~YTOfYk
AWK mrWPTCD{
BEGIN { print "Hello, world!" } l*~O;do
?!TFoD2'
dJxdrs
BASIC qM78s>\-h
传统版BASIC(例如GWBASIC): m_YXTwwx
rYe z$e^r
10 PRINT "Hello, world!" m1H|C 3u8
20 END }zC9;R(E
d1]CN6 7{G
或在提示符输入: 3+vbA;R
2q]y(kW+
?"Hello, world!":END ,yc_r=_
" E+V>V+
现代版BASIC(例如Quick BASIC): Cge@A'2
GPV=(}z
Print "Hello, world!" &iKy
=2v/f_
以下的语句在Quick BASIC中同样有效: z7TMg^9#
Z
0&=Lw
? "Hello,world!" hK^(Y
@'n075)h
h|~I'M]*
BCPL JC6?*R
GET "LIBHDR" d8D0 28d
=D-u".{
LET START () BE =T"R_3[NC
$( iB4`w\-o
WRITES ("Hello, world!*N") D2}N6i
$) NzS(,F
p GZiADT
$O
nh2
^
Befunge ]q^6az(Ud
"!dlrow olleH">v ?
nx3#<
, +}3l$L'bY
^_@ u7||]|2
PY81MTv0;
9u[^9tL+D
Brainfuck k-it#'ll{x
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< FgwIOpqE*
+++++++++++++++.>.+++.------.--------.>+.>. $[f-{B{>*
1N\/61+aA
l9{}nz
C P=3mLz-
#include <stdio.h> suKr//_
$?P 5A E
int main(void) [G!#y
{ hp|.hN(kS]
printf("Hello, world!\n"); lV%oIf[OB
return 0; CcCcuxtR
} qAI%6d
T'6MAxEZUq
B^;"<2b*
C++ + /+> :
#include <iostream> P;8nC:z L
vJ,r}$H3
int main() xP{)+$n
{ sdp3geBYo
std::cout << "Hello, world!" << std::endl; JjMa
return 0; i}Q"'?
} W6c]a/
njxfBA:
]`eP"U{
C++/CLI 33},lNS|
int main() vKO/hZBh
{ gwGw
System::Console::WriteLine("Hello, world!"); C))x#P36
} ;_X2E~i[
sHqa(ynK
G!T_X*^q2U
C# (C Sharp) %6.WGuO
class HelloWorldApp rdH3!
{ Z".Xroq~
public static void Main() .Gt_~x
{ 6?(yMSKa
System.Console.WriteLine("Hello, world!"); P,J+'.@
} Y_zMj`HE
} xovsh\s
c/DK31K
O!G!Gq&
COBOL &+5ij;AD
IDENTIFICATION DIVISION. QYg V[\&
PROGRAM-ID. HELLO-WORLD. C4aAPkcp2$
xyD2<?dGUb
ENVIRONMENT DIVISION. $c{fPFe-
~ &<Ls
DATA DIVISION. AqiH1LAE
$GR
rT C!
PROCEDURE DIVISION. 9?iA~r|+
DISPLAY "Hello, world!". (kTu6t*
STOP RUN. 0%<OwA2d
6H1;Hl
f
=&i#NSK
Common Lisp l*.u rG
(format t "Hello world!~%") s(T0lul
!,|-{":
boq=@Qh
DOS批处理 l6*MiX]q
@echo off %Q]3`kxp
echo "Hello, world!" ^H0#2hFa
OO2uE ;( 3
S]&:R)#@
Eiffel n$ rgJ
class HELLO_WORLD Xub*i^(]
,j6R/sg
creation GT7&>}FJ)
make k|,Y_h0Y
feature _\.4ofK(
make is [l/!&6
local jF@BWPtF=
io:BASIC_IO sW-0G$,|
do <Umr2Vw-
!!io .07"I7
io.put_string("%N Hello, world!") Aydpr_lp
end -- make bcq&yL'D
end -- class HELLO_WORLD 7YxVtN
G^sx/H76J
Xs{PAS0
Erlang g< xE}[gF
-module(hello). BRy3D\}
-export([hello_world/0]). k;B[wEW@
]$uC~b
hello_world() -> io:fwrite("Hello, World!\n"). ?b:Pl{?
+T&YYO8>5
y/E:6w
Forth 7},oY""8
." Hello, world!" CR i)$P1h
jGi{:} `lB
0l3[?YtXc
Fortran $4mCtonP=
WRITE(*,10) $ q*a}d[Q
10 FORMAT('Hello, World!') 80=LT-%#
STOP NLr a"Z
END ^Ze(WE)
&~Y%0&F,&
&b`'RZe
HTML gnGh )
<HTML> !Rc
%
<HEAD> 02tt.0go
<TITLE> Hello World! </TITLE> Wco2i m
</HEAD> 74ho=
<BODY> Q}G2f4
<p>Hello World!</p> sv!zY= 6
</BODY> DZ @B9<Zz{
</HTML> dk^jv +
et/:vLl13
<(@Z#%O9)
HQ9+ !u'xdV+bf
H "F}dZ
z#Fel/L`O
q 'd]
INTERCAL ]ag{sU@#
PLEASE DO ,1 <- #13 Q5}XD
DO ,1 SUB #1 <- #238 s1E 0atT
DO ,1 SUB #2 <- #112 tfe]=_U
DO ,1 SUB #3 <- #112 0%Le*C'yk
DO ,1 SUB #4 <- #0 c~4Cpy^
DO ,1 SUB #5 <- #64 ZY8w1:'
DO ,1 SUB #6 <- #238 &l0K~7)b
DO ,1 SUB #7 <- #26 _|4R^*/4
DO ,1 SUB #8 <- #248 /@|iI<|
DO ,1 SUB #9 <- #168 UWnF2,<s;
DO ,1 SUB #10 <- #24 /7])]vZ_
DO ,1 SUB #11 <- #16 Ka6u*:/
DO ,1 SUB #12 <- #158 I`(53LCqo
DO ,1 SUB #13 <- #52 `Th~r&GvF
PLEASE READ OUT ,1 (6B;
PLEASE GIVE UP 4D2U,Ds
OX 'V
Y6&v&dA;
Java 'YB[4Q /0
public class Hello PJ;WNo8
{ 2GORGS%
public static void main(String[] args) (c)=Do=
{ 8HFCmY#
System.out.println("Hello, world!"); ?_FL
'G
} V'e%%&g~N
} Q
8Hl7__^
Wlxmp['Bh
@I-,5F|r
JSP $m)gfI]9
<% [.^ol6
out.print("Hello, world!"); &9^4-5]
%>
+WAkBE/
@"`}%-b
c+&Kq.~K
MIXAL 9DJ&J{2W
TERM EQU 19 the MIX console device number zt:
!hM/Vt
ORIG 1000 start address ZT@=d$Z&t
START OUT MSG(TERM) output data at address MSG ?IYu"UO<)|
HLT halt execution zzhZ1;\
MSG ALF "MIXAL" E&
.^|<n
ALF " HELL" D
h;5hu2"
ALF "O WOR" }3A~ek#*~
ALF "LD " y~\ujp_5w
END START end of the program qF4tjza;k
"d:rPJT)(@
vRH^en
Nuva 'KIT^k0"Ih
<..直接输出..> C{}PO u
Hello, world! bJetqF6n
X5YOxMq
<..或者..> t$(#$Z,RS
[:.wCG5
<. |,p"<a!+{w
// 不带换行 W M` 3QJb
? "Hello, world!" COsmVQ.
d_d&su
E
// 或者 =TDKU
}< H> 9iJ:
// 带换行 jQ;/=9
?? 'Hello, world!' bw zx_F/
.> &muBSQ-
':fp|m)M
ttUK~%wSx
OCaml t*9 gusmG
let main () = I)V=$r{
print_endline "Hello world!";; g%l ,a3"
'o6}g p)
CyR`&u
Pascal 6w7;
program Hello; Nna.N U1
begin kW)3naUf<
writeln('Hello, world!'); }ofb]_C,
end. g}v](Q
&Gh0f"?
j{OA%G(I
Perl ]5jS6@Vl*
#!/usr/local/bin/perl KR#,6
print "Hello, world!\n"; ":$4/b6
s-#EV
c 9f"5~
PHP {6H[[7i
<?php }lIc{R@H
print("Hello, world!"); V*b/N
?> Cu8mN B{H
T4]2R
qg& /!\
Pike vSR&>Q%X
#!/usr/local/bin/pike ;:D-}t;
int main() ;.uYWP|9
{ VKl,m ;&