“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。 CPB{eQeDuv
1$Hou
将Hello World程序作为第一个学写的程序,现在已经成为一种传统。该程序最早出现在由Brian Kernighan和Dennis Ritchie写的计算机程序设计教程《C语言程序设计》。 5CK+\MK
rLTBBvV
以下是用不同语言写成的Hello World程序的几个例子: \$ 9C1@B@
Ada 2 "&GH1
with Ada.Text_Io; use Ada.Text_Io; \,S|>CPQ
procedure Hello is 9'MGv*Ho
begin ni;)6,i
Put_Line ("Hello, world!"); n)yDep]$G
end Hello; M?l v
bjVk9XvH6
@a9.s
汇编语言 "Enb
4cQP+ n
x86 CPU,DOS,TASM KV0*dB;
MODEL SMALL k^
<]:B
IDEAL !wp1Df[
STACK 100H =$OGHc
suE K;Bk9
DATASEG Nu7>G
HW DB 'Hello, world!$' &S4*x|-C&
Fk=SkSky
CODESEG ;nSF\X(;{
MOV AX, @data py;p7y!gxA
MOV DS, AX |d0ZB_ci
MOV DX, OFFSET HW B*tYp
MOV AH, 09H c64^u9
INT 21H @)>Z+g
MOV AX, 4C00H h,c*:
INT 21H @c^ Dl
END (dlp5:lQz
88HqP!m%P:
<::lfPP
x86 CPU,GNU/Linux,NASM >/ay'EyY;>
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Zn9tG:V
;Enter this into "hello.asm" then type: 8-#kY}d.
;"nasm -f elf hello.asm" 3ijPm<wn
;"ld hello.o -o hello" !hVbx#bXl
;"./hello" oC`F1!SfOO
:M(uP e=D
section .data ;data section declaration Sp>g77@
msg db 'Hello World!',0AH A8f.h5~9
len equ $-msg ;string length [9
MH"\
<vcU5
.K.
section .text ;code section declaration xn*$Ty+
global _start ;entry point (start of execution) y#Dh)~|k
_start: mov edx,len ;string length pGD@R=8
mov ecx,msg ;string start xMr,\r'+
mov ebx,1 ;file handle: stdout JQ?`l)4
mov eax,4 ;sys_write WEwa<%Ss
int 80h ;kernel system call _(-jk4 L
<WP@q&^k\
mov ebx,0 ;return value 5x+]uABE
mov eax,1 ;sys_exit #@FA=p[%
int 80h ;kernel system call M50I.Rd
?/YAB Y}L
cWAw-E5
x86 CPU,Windows,MASM32 vRe{B7}p;
.386 |gE1P/%k
.model flat,stdcall \Th<7WbR6#
option casemap:none y,5qY}P+
;Include 文件定义 wPg/.N9H
include windows.inc /\%<VBx ?q
include user32.inc rZ?:$],U!
includelib user32.lib JpS}X\]i
include kernel32.inc JP4DV=}L
includelib kernel32.lib AW5iwq6p
;数据段 ~5,^CTAM
.data MZGhN
brd
szCaption db 'A MessageBox!',0 l5-[a
szText db 'Hello,world!',0 !<M
eWo
;代码段 )JzY%a SP
.code uzdPA'u
start: T^ktfgXq
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK :)#;0o5
invoke ExitProcess,NULL $z=%e#(!I
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 7}&:07U
end start _:Qh1 &h
krfXvQJwJ
.D W>c}1
AWK o-6d$c}{f
BEGIN { print "Hello, world!" } `<9>X9.+
LGt>=|=bj
c`<2&ke
BASIC -'Z Gc8)
传统版BASIC(例如GWBASIC): `#$}P;W
7IxeSxXH
10 PRINT "Hello, world!" "0HUaU,e
20 END JY
~/G)z?+E
或在提示符输入: AERJ]$\
)'kpO> _G
?"Hello, world!":END _V$'nz#>e
4<Vi`X7[F
现代版BASIC(例如Quick BASIC): M
FIb-*wT
cK'g2S
Print "Hello, world!" t^'nh
1=
D1rVgM
以下的语句在Quick BASIC中同样有效: u=0O3-\h
{JfQQP&FV
? "Hello,world!" |<Ls;:5.
\\SQACN
1gHe$dzXk
BCPL c~hH
7/v
GET "LIBHDR" M|blg!j;
|O(>{GH
LET START () BE t9`{^<LH
$( /1EAj
WRITES ("Hello, world!*N") qA[lL(
$) Xc-["y64
YF{MXK}
.\caRb[
Befunge ]nsjYsT
"!dlrow olleH">v D_lRYLA+
, dWd%>9}
^_@ S1$^ _S
=
+@ChZ
%"`p&aE:
Brainfuck jt}Re,
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< 7.29'
+++++++++++++++.>.+++.------.--------.>+.>. FQ>$Ps*a[
]ogifnwv
$5pCfW8>
C ZO/e!yju
#include <stdio.h> r(r(&NU
7 z
int main(void) 8C{&i5kj\E
{ UPH#~D!
printf("Hello, world!\n"); }<WJR Y6j
return 0; 3l=q@72
} <);q,|eh2
q=t!COS
-jJhiaJ$<
C++ CA#g(SiZ
#include <iostream> ^{"i eVn
CFFb>d
int main() {L;sF=d
{ ;VLDXvGd
std::cout << "Hello, world!" << std::endl; v\@qMaPY
return 0; 5[;[ Te9=S
} e_b,{l#
Ii+3yE@c
$U[d#:]
C++/CLI 1>e30Ri,g
int main() eV"%(<{
{ \kQ)fk]^
System::Console::WriteLine("Hello, world!"); Onx6Fy]L
} 3#t9pI4
IRg2\Hq
/!ElAL
C# (C Sharp) >7BP}5`.;
class HelloWorldApp 30HUY?'K
{ A"S"La%"
public static void Main() ~m=GS[=
{ I<QUvs%e
System.Console.WriteLine("Hello, world!"); v:SHaUS
} cx:_5GF
} [h-6;.e
+ nR("Il
eP2Q2C8g
COBOL dSwfea_
IDENTIFICATION DIVISION. _YX% M|#
PROGRAM-ID. HELLO-WORLD. 04U|Frc
}tt%J[
ENVIRONMENT DIVISION. 1 fcV&qHR
l-w4E"n3
DATA DIVISION. 3}}/,pGSc
<qR$ `mLN
PROCEDURE DIVISION. !IOmJpl'
DISPLAY "Hello, world!". 6Y2,fW8i,
STOP RUN. )?[2Y%P
"1s ]74
$2Wk#F2c=
Common Lisp =\]gL%N-|
(format t "Hello world!~%") w5z]=dN
XI`_PQco
mywxV
DOS批处理 k$v7@|Aw
@echo off Qb@j8Xa4[
echo "Hello, world!" 2- L-=0
#:" ]-u^
#w L(<nE
Eiffel I0Do%
class HELLO_WORLD p+P@I7V
n`=S&oKH
creation ^U~Er'mT
make E{6ku=2F
feature k?h{6Qd
make is Mzg3i*
local NATi)A"TZ
io:BASIC_IO :(enaHn#~
do .U(6])%;@
!!io iY>xx~V
io.put_string("%N Hello, world!")
#4|RaI|.
end -- make {W?!tD43"
end -- class HELLO_WORLD f #h0O3
KeyKLkg>
X:Y1g)|K
Erlang `_vPElQXZ#
-module(hello). Vc'p+e|(
-export([hello_world/0]). [%>*P~6nK
q"Bd-?9
hello_world() -> io:fwrite("Hello, World!\n"). @dQr^'h
Yy
4Was#
"a(R>PV%
Forth ^Whc<>|
." Hello, world!" CR jEKa9rt
0(&uH0x
5M\0t\uEn
Fortran Mxz
X@GBX
WRITE(*,10) ,~;`@
10 FORMAT('Hello, World!') 36'J9h\
STOP rKPsv*w
END }c/#WA|b
QPVr:+\B{
8;=?F>]xn
HTML W=2.0QmW
<HTML> IF>v
-Z
<HEAD> ?Zv5iI
<TITLE> Hello World! </TITLE> &/EZn xl
</HEAD> Uj 3{c
<BODY> F4(;O7j9
<p>Hello World!</p> &[\zs&[@y
</BODY> &>B|?d
</HTML> _6FDuCVD-
*RkvM?o@jC
~=wBF
HQ9+ ,hK
=x
H mp3 Dc
7TAoWD3
a
w~a/T:
INTERCAL 'PMzm/;8st
PLEASE DO ,1 <- #13 JKmd'ZGw
DO ,1 SUB #1 <- #238 3!;o\bgK
DO ,1 SUB #2 <- #112 )P1NX"A
DO ,1 SUB #3 <- #112 ivdPF dJ
DO ,1 SUB #4 <- #0 }J5iY0
DO ,1 SUB #5 <- #64 unL1/JY z
DO ,1 SUB #6 <- #238 R U[
DO ,1 SUB #7 <- #26 &m(eMX0lU
DO ,1 SUB #8 <- #248 5NSXSR9c
DO ,1 SUB #9 <- #168 ziW[qH {
DO ,1 SUB #10 <- #24 2b
{Y1*
DO ,1 SUB #11 <- #16 EI9Yv>7 d{
DO ,1 SUB #12 <- #158 \l6mXIn=>
DO ,1 SUB #13 <- #52 ~$a%& ]\
PLEASE READ OUT ,1 K6<1&
PLEASE GIVE UP w*SF Q_6YE
#l2WRw_t
bVRxGn @l
Java h\-jqaq
public class Hello 0g#?'sD
{ QqY42hR
public static void main(String[] args) 'U`I
{ DF#WQ8?$]
System.out.println("Hello, world!"); 9DXu*}
} ]:^kw$
} d@|j>Z
Sdmynuv
U
S4O:?^28
JSP >|T?87
<% =7P; /EV
out.print("Hello, world!"); /=OSGIJzm
%> b!37:V\#}
X>jwjRK
$
q33!X!br
MIXAL 6a`_i
TERM EQU 19 the MIX console device number kLY9#p=X
ORIG 1000 start address \t&6$"n(B6
START OUT MSG(TERM) output data at address MSG I|[aa$G
HLT halt execution ?yz}
MSG ALF "MIXAL" xcIZ'V
ALF " HELL" nuv$B >
ALF "O WOR" 28+Sz>SP
ALF "LD " y+iuA@WCv
END START end of the program B<'V7#L_
H+2J.&Ch
HNoh B4vt
Nuva 7]9s_13]
<..直接输出..> -ap;Ul?
Hello, world! e;}5~dSi
>Q\H1|?
<..或者..> ELNA-ZKp
WU,72g=
<. $t</{]iX
// 不带换行 f{z%P I[
? "Hello, world!" Zk;;~ESOU
uJp}9B60_
// 或者 g9"_ BG
1y8:tri>N
// 带换行 tT#Q`cB
?? 'Hello, world!' XY QUU0R
.> <ct {D|mm
U14dQ=~b/
Z*e7W O.
OCaml t@19a6:Co
let main () = 7iJk0L$]x
print_endline "Hello world!";; .r*b+rc;]
U ._1'pW
=yNHJHRA#
Pascal #XY]@V\
program Hello; cwC,VYVl
begin J2[QHr&tn
writeln('Hello, world!'); +[}]a3)
end. $ .Z2Rdlv(
{:FITF3o
&Y=NUDt_
Perl fR[!=-6^f
#!/usr/local/bin/perl 17Gdu[E
print "Hello, world!\n"; ?h3Ow`1G
|95/'a*
`oz7Q(`
PHP ".i{WyTt
<?php $xZk{ rK
print("Hello, world!"); f"0H9
?> Y@\5gZ&T
o%9>elOju
-MEz`7c~
Pike Gf]s?J^a
#!/usr/local/bin/pike Pd;ClMa%
int main() dO//
{ yEqmB4^-
write("Hello, world!\n"); yaR;
return 0; V=*J9~K
} -5 W0 K}
kL|Y-(FPo%
qRGb3l
PL/I C[&&.w8Pm
Test: procedure options(main); v_@_J!s
declare My_String char(20) varying initialize('Hello, world!'); 6uXYZ.A
put skip list(My_String); :d2u? +F
end Test; t(rU6miN
G-^ccdT
1=a}{)0h
Prolog ,"VQ0Z1
goal eo_T.q
write("hello,world!"). 2M#CJ&
@YB\PVhW
+e:ZN
tr9
Python 2!3&Ub#FO
#!/usr/local/bin/python jgo@~,5R
print "Hello, world!" #rr-4$w+
&"h!SkX/
">QY'r
REXX bgK(l d`
say "Hello, world!" rpT<cCem1
N]<gHGj}
XfrnM^oty
Ruby _dBU6U:V
#!/usr/bin/ruby h*9o_
print "Hello, world!\n" .>'Z9.Xnk
9h(hx7]
?BZ][~n-Q
Scheme %Nn'p"
(display "Hello, world!") !m|%4/
M@
(newline) [;f"',)y,
^aW[~ c
V$%K=[
sed (需要至少一行输入) ZO1J";>u
sed -ne '1s/.*/Hello, world!/p' {LD8ie|x1`
KTEis!w
VT7NWTJ,
Smalltalk "'#Hh&Us
Transcript show: 'Hello, world!' &Kp+8D*
U}0/V
c26
a&