“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。 }dHdy{$
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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》。 bdY:-8!3
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以下是用不同语言写成的Hello World程序的几个例子: ~A1!!rJX
Ada aj,o<J
with Ada.Text_Io; use Ada.Text_Io; 1;DRcVyS+
procedure Hello is V#b=mp
begin B^]PKjLNZ
Put_Line ("Hello, world!"); ;TS%e[lFhQ
end Hello; #vhN$H :&q
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OScqf]H
汇编语言 89;@#9
(KwC,0p
x86 CPU,DOS,TASM =Xg/[J%
MODEL SMALL "<{|ni}
IDEAL ,p OGT71
STACK 100H 3Pllxq<n
"wuO[c&%/
DATASEG jd,i=P%
HW DB 'Hello, world!$' %q~q,=H$]
fm`V 2'Rm
CODESEG +iFt)
MOV AX, @data |
oK9o6m4
MOV DS, AX ~;a\S3
MOV DX, OFFSET HW HsUh5;
MOV AH, 09H #r]Z2Y]
INT 21H .)_2AoT7[
MOV AX, 4C00H ~#jiX6<I
INT 21H la)^`STh
END AS@(]T#R
2%L`b"9}V
beC%Tnb7
x86 CPU,GNU/Linux,NASM )XGz#C_P
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Lt=32SvTn
;Enter this into "hello.asm" then type: q\x.e.@
;"nasm -f elf hello.asm" Rw%?@X3m]
;"ld hello.o -o hello" l_yF;5|?z
;"./hello" ;>f\fhi'
3l45(%g+
section .data ;data section declaration (XW'1@b
msg db 'Hello World!',0AH Eu:/U*j
len equ $-msg ;string length '?mF,Co{
_^NaP
section .text ;code section declaration 6%ofS8[
global _start ;entry point (start of execution) $Seh4
_start: mov edx,len ;string length @+H0D"
mov ecx,msg ;string start
l
EzN
mov ebx,1 ;file handle: stdout z fv@<'
mov eax,4 ;sys_write H@Ot77(*
int 80h ;kernel system call *d;TpwUI
R:YVmqd
mov ebx,0 ;return value R-9o3TPa
mov eax,1 ;sys_exit +(92}~RK
int 80h ;kernel system call Q,^/Lm|]k
)LIn1o_,
X,_K
)f
x86 CPU,Windows,MASM32 /\# f@Sg
.386 c6#E gN,X
.model flat,stdcall -` ViuDX=
option casemap:none =g!Pw]
;Include 文件定义 {yWL|:#K
include windows.inc VOM@x% 6#c
include user32.inc MiIxj%,(
includelib user32.lib 2Kz$y
JTp
include kernel32.inc !ess.U&m'
includelib kernel32.lib f"P866@oWn
;数据段 #jrlNg4(
.data (C#0
ML
szCaption db 'A MessageBox!',0 >MN"87U6
szText db 'Hello,world!',0 ?%UiW7}j';
;代码段 oJr+RO
.code p|2GPrA]aL
start: [B+F}Q^;
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK 6>rz=yAM_
invoke ExitProcess,NULL U364'O8_
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> m^!j)\sM5
end start ufIvvZ*
Cj-&L<
1:](=%oM&k
AWK x@Z{5w_a
BEGIN { print "Hello, world!" } #f24a?n|
~Jr'4%
X"+p=PGZK
BASIC K+!e1
'
传统版BASIC(例如GWBASIC): 4Ii5V
c
jaodcT0
10 PRINT "Hello, world!" IRx%L?
20 END 7$Z_'GJ]1C
5(J?C-Pk
或在提示符输入: D^6iQW+.P
g/!MEOVx
?"Hello, world!":END UIyLtoxu
OxGfLeP.R!
现代版BASIC(例如Quick BASIC): >fI\f <ez
UWC4PWL,>C
Print "Hello, world!" YR-G:-(#b
h`\$8oV
以下的语句在Quick BASIC中同样有效: UHvA43
lWj*tnnn[
? "Hello,world!" 7)jN:+4N
uK$ Xqo%L
~SBb2*ID
BCPL u1 M8nb
GET "LIBHDR" 9 ;p5z[jI
mI,lW|/l,
LET START () BE /\- }-"dm
$( y!P!Fif'
WRITES ("Hello, world!*N") 0a{hCx|$J
$) 7`J2/(
n'V{
o/o6|[=3
Befunge :G@z?ZJ[
"!dlrow olleH">v :cWU,V
, r
YKGX?y
^_@ zY:3*DiM
f;BY%$
D1Zy Js#
Brainfuck 4h|*r !
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< g]: [^p
+++++++++++++++.>.+++.------.--------.>+.>. hQ<7k'V
4bA^Gq
7:?\1a
C FqA4 OU
#include <stdio.h> %AA&n*m
]b%U9hmL^f
int main(void) ZN$%\,<
{ 3pvqF,"~D
printf("Hello, world!\n"); FNH)wk
return 0; nL=+`aq_
} Yft [)id
C}mhnU@
,H+Y1N4W(
C++ U[x$QG6 m!
#include <iostream> 4%~*}
>4luZnWMI
int main() XN Uw
{ Q&r.wV|
std::cout << "Hello, world!" << std::endl; -fFtHw:kHh
return 0; =hvPq@C%
} 9n\>Yieu
2sIt~ Gn
~M^[
C++/CLI r_$*euh@
int main() WyatHC
{ ?K7uy5Y
System::Console::WriteLine("Hello, world!"); N
Nk
} "NA<^2W@J
XyN
" Jr
JK<[]>O
C# (C Sharp) }wiyEVAh{
class HelloWorldApp jdJTOT
{ @ !su7
public static void Main() 8b'@_s!_
{ !38KHq^|&
System.Console.WriteLine("Hello, world!"); P*iC#w]m
} bI:W4y>I=
} 5e,u*J]
>eG<N@13p
v2rO>NY4
COBOL (J5}1Q<K
IDENTIFICATION DIVISION. k5aB|xo
PROGRAM-ID. HELLO-WORLD. @z ",1^I
#tu>h
ENVIRONMENT DIVISION. d~~, 5E
>"!ScYn
DATA DIVISION. ;]grbqXVE
/.7RWy`
PROCEDURE DIVISION. 1qNO$M
DISPLAY "Hello, world!". N gF7$@S
STOP RUN.
"LB
MYZ
pTq DPU
?}8r h%
Common Lisp Jg=!GU/::
(format t "Hello world!~%") "!zJQl@
p*0[:/4
WC<[<uI*
DOS批处理 W=^.s>7G
@echo off LJ
<pE;`d
echo "Hello, world!" gQ0,KYmI3_
,uC-^T
|n
u@e.5_:S)
Eiffel 1Mp-)-e
class HELLO_WORLD qA)YYg/G
Sk+XBX(}
creation axUj3J>
make ow9a^|@a
feature 2k<#e2
make is 7OmT^jV2
local *tj(,:!
io:BASIC_IO I{dy,\p
do V4jMx[
!!io cX
C [O
io.put_string("%N Hello, world!") GgY8\>u
end -- make
,==_u
end -- class HELLO_WORLD v}u]tl$,
!0?o3,of-
^7+;XUyg
Erlang 'u v=D
-module(hello). d*s*AV
-export([hello_world/0]). ZcjLv
oH6zlmqG"
hello_world() -> io:fwrite("Hello, World!\n"). ZT!8h$SE:
(4 ZeyG@
:lo5,B;k
Forth AA[1[
." Hello, world!" CR N8Rq7i3F?a
WT,I~'r=S
bT 42G[x
Fortran C lf;+G0
WRITE(*,10) {H[N|\
10 FORMAT('Hello, World!') W;I{4ed6
STOP K'
`qR
END QnOgF 3t
k"cMAu.
I[|Y
2i
HTML QD!NV*
<HTML> 9dA+#;?
<HEAD> ?[ )}N
_o#
<TITLE> Hello World! </TITLE> 8d5#vm
</HEAD> hOk9 y=
<BODY> ,e'm@d$Q*
<p>Hello World!</p> <J+Oh\8tad
</BODY> rd0Fd+t/
</HTML> vVo'f|fW
3?V'O6
^AU-hVj
HQ9+ trrNu
H 0=HB!{@
&j:prc[W
'e]>lRZ
INTERCAL <jJ'T?,
PLEASE DO ,1 <- #13 05ClPT\BCr
DO ,1 SUB #1 <- #238 `Z,WKus
DO ,1 SUB #2 <- #112 #3
E"Ame
DO ,1 SUB #3 <- #112 (Z$7;OAI
DO ,1 SUB #4 <- #0 :'wxm3f
DO ,1 SUB #5 <- #64 H6`k%O*
DO ,1 SUB #6 <- #238 TfZ M0Wz
DO ,1 SUB #7 <- #26 wnd
#J `
DO ,1 SUB #8 <- #248 @>46.V{P}B
DO ,1 SUB #9 <- #168 8m' f8.x
DO ,1 SUB #10 <- #24 x`7Le&4f
DO ,1 SUB #11 <- #16 ":+d7xR?o
DO ,1 SUB #12 <- #158 </_QldL_
DO ,1 SUB #13 <- #52 ,H6P%
PLEASE READ OUT ,1 zNo,PERG
PLEASE GIVE UP @Ik5BT
J&\Q3_vro9
\wz^Z{U
Java ! N2uJ?t
public class Hello ^}$t(t
{ Xk|a%%O*H
public static void main(String[] args) i/_rz.c~3
{ f91]0B`C
System.out.println("Hello, world!"); 9{fP.ifdv7
} TW&s c9
} @xo8"kl
'L O3[G{
-S]ercar
JSP `?=3[
<% A nl1+
out.print("Hello, world!"); I(VqtC:K.
%> axC{azo|
b&`~%f-
>(H:eRKq
MIXAL Y S7lB
TERM EQU 19 the MIX console device number c$[2tZ
ORIG 1000 start address
5:gpynE|
START OUT MSG(TERM) output data at address MSG _$T
!><)y
HLT halt execution qfT9g>EF
MSG ALF "MIXAL" c}OveR$'&
ALF " HELL" [F*yh9%\
ALF "O WOR" ^n~Kr1}nj
ALF "LD " ?yAb=zI1b
END START end of the program e:-pqZT`
4ZUtK/i+r
]~
N.
Nuva "Fmq$.$%
<..直接输出..> 8t=H
Hello, world! _"Y7}A\9
}*!L~B!
<..或者..> QyTNV
n5~Dxk
<. aO1.9!<v
// 不带换行 8HLL3H0
? "Hello, world!" T$MXsq
OcF_x/#
// 或者 |g{50r'=
l5^Q
// 带换行 Yl au
?? 'Hello, world!' +/$&P3
.> ^-?^iWQG
7n .A QII
C\"C12n{
OCaml 0aR.ct%
let main () = .6[8$8c
print_endline "Hello world!";; .sit5BX
nl2Lqu1
t5l<Lm)
Pascal DHn\ =M
program Hello; ;FwUUKj
begin iDDq<a.A
writeln('Hello, world!'); >j]Gz-wC
end. tC1'IE-h
%Jl6e}!
>N!
Xey
Perl E5S(1Z}]p{
#!/usr/local/bin/perl gF9GU5T:
print "Hello, world!\n"; @+~URIG)
'U&]KSzxv
;LC|1_ '
PHP ?-&k?I
<?php ?7CdJgJp
print("Hello, world!"); 2vUcSKG7
?> D3g5#.$,}>
+-t&li%F
(oiQ5s^f
Pike '#A_KHD
#!/usr/local/bin/pike 0*P-/)o x
int main() gmTBp}3
{ ]c_lNHssmq
write("Hello, world!\n"); \s8h.xjU
return 0; C-49u<;,
} e 0$m<5
B;Z _'.i,d
hb1h.F
PL/I [Ti' X#
Test: procedure options(main); _{if"
declare My_String char(20) varying initialize('Hello, world!'); (F;*@Z*R
put skip list(My_String); 1F0];{a
end Test; K7x;/O
Pj56,qd>s
D)L~vA/8b
Prolog jbg9EtQ!*
goal XH0Vs.w
write("hello,world!"). c;29GHs2
HIj:?y
o|84yT!~
Python Qe7
SH{
#!/usr/local/bin/python o^uh3,.
print "Hello, world!" RigS1A\2l
9nO&d(r g
^|U5@u_
REXX mOjjw_3gq
say "Hello, world!" `K$;K8! 1
&j'k9C2p
kMzDmgoxNg
Ruby N-}OmcO]e
#!/usr/bin/ruby k_^
4NU
print "Hello, world!\n" @/01MBs;
b<r*EY
g-x;a0MQx
Scheme 8j]QnH0&
(display "Hello, world!") kotKKs
(newline) <#Fex'4
S:2 xm8
i
H`3w=T+I
sed (需要至少一行输入) lzFg(Ds!f
sed -ne '1s/.*/Hello, world!/p' }]=A:*jD
2,|@a\H
G'HLnx}Yi
Smalltalk GXv2B%i8
Transcript show: 'Hello, world!' h52+f
- 3<&sTR
/'v!{m
SNOBOL `x L@%
OUTPUT = "Hello, world!" geM`O|Np
END h_Er$ZT64
>9g^-~X;v
RHu,t5,
SQL z&qOu8Jh
create table MESSAGE (TEXT char(15)); T sJ71
insert into MESSAGE (TEXT) values ('Hello, world!'); /3"S_KE1@+
select TEXT from MESSAGE; &