“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。 rv/O^aL`Y
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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》。 ~s_n\r&23
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以下是用不同语言写成的Hello World程序的几个例子: >cm*_26;I
Ada 4RgEN!d?H
with Ada.Text_Io; use Ada.Text_Io; L~nVoKY*V
procedure Hello is
%W!C
begin EC*rd
Put_Line ("Hello, world!"); r=8(n<;Co
end Hello; V[&4Km9C
rp*f)rJ
D@:w/W
汇编语言 C(( 7
F2QX ^*
x86 CPU,DOS,TASM &gdtI
MODEL SMALL )%e`SGmp
IDEAL YcJZG|[
STACK 100H 4{!7T
-8;@NAUa
DATASEG r q2]u
HW DB 'Hello, world!$' rdK=f<I]
}:NE
CODESEG .QRa{l_)
MOV AX, @data 7s#,.(s
MOV DS, AX
WW5AD$P*
MOV DX, OFFSET HW d51.Tbt#%7
MOV AH, 09H 6$#p}nE
INT 21H UA@(D
MOV AX, 4C00H 3<:(Eda}
INT 21H wvH=4TT=w"
END e!_+TyI
<=fYz^|XT
w9QY2v,U
x86 CPU,GNU/Linux,NASM QIZ }7
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). Gn}G$uk61
;Enter this into "hello.asm" then type: <pAN{:
;"nasm -f elf hello.asm" KW^#DI6tr
;"ld hello.o -o hello" qY^OO~[
;"./hello" pwq a/Yi
&PJ&XTR
section .data ;data section declaration j6zZ! k
msg db 'Hello World!',0AH M<'AM4
len equ $-msg ;string length yb)!jLnH
tqdw
y.
section .text ;code section declaration ZH]n&%@j
global _start ;entry point (start of execution) 4`(b(DL]
_start: mov edx,len ;string length n}NO"eF>-s
mov ecx,msg ;string start 5[^pU$Y
mov ebx,1 ;file handle: stdout \*5`@>_
mov eax,4 ;sys_write v[S>
int 80h ;kernel system call zoFCHsr
ZaxBr
mov ebx,0 ;return value E+>$@STv#
mov eax,1 ;sys_exit |3tq.JU
int 80h ;kernel system call GEJEhwO;H
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QFn .<@
x86 CPU,Windows,MASM32 R $vo
.386 @m*^v\q<u
.model flat,stdcall J!l/!Z>!cF
option casemap:none }=)
;Include 文件定义 <B,z)c
include windows.inc p[kEFE,%
include user32.inc nP9zTa
includelib user32.lib ko-:)z
include kernel32.inc NWK+.{s>m
includelib kernel32.lib 85$W\d
;数据段 9~AAdD
.data kB41{Y -
szCaption db 'A MessageBox!',0 Qfx:}zk{
szText db 'Hello,world!',0 >Q159qZ
;代码段 ~N2<-~=si
.code fU@{!;|Pz
start: p-p]dV
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK B]):$#{Rxl
invoke ExitProcess,NULL 7WuhYJbf
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> HvhP9_MB
end start $JH_
#0yU
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}E?{M~"<
AWK xW`,@a}
BEGIN { print "Hello, world!" } Tnw0S8M
Xi^#F;@sU
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BASIC lRIS&9vA3
传统版BASIC(例如GWBASIC): T@V<J'
"RZVv~BD
10 PRINT "Hello, world!" >5,nB<
20 END F(?A7
n*7Ytz3#'
或在提示符输入: x>Hg.%/c[
^Q)&lxlxpx
?"Hello, world!":END ^
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~,199K#'
现代版BASIC(例如Quick BASIC): 5.1 c#rL
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Print "Hello, world!" kZ8+ev=
IaDN[:SX
以下的语句在Quick BASIC中同样有效: "oZ$/ap\
/wF*@ /PTH
? "Hello,world!" )U>JFgpIW
t-, =sV
}3{ x G+,
BCPL #q[k"x=c
GET "LIBHDR" *^]lFuX\&E
o;d><
LET START () BE K'Gv+UC*6
$( Het5{Yb.
WRITES ("Hello, world!*N") p>GTFXEi6
$) s<}d)L(
Gw\-e;,
w_O3];
Befunge m[k@\xS4e
"!dlrow olleH">v U{^~X_?
, U64WTS@
^_@ X>0$zE@0
m^6& !`CD
dZSv=UY)
Brainfuck 8&gr}r-
5
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< #&L[?jEn
+++++++++++++++.>.+++.------.--------.>+.>. )Ha`>
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5)IJ|"]y
C {
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#include <stdio.h> tH7@oV;
-F7GUB6B
int main(void) WAzYnl'p
{ =.*+c\
printf("Hello, world!\n"); mJj
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return 0; =vqy5y
} '+@q
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C++ |oYqkP|
#include <iostream> `7f><p/q
!9w;2Z]uum
int main() 9:JFG{M
{ S 54N
std::cout << "Hello, world!" << std::endl; #Tr>[ZC
return 0; M/O4JZEqh
} oNkASAd
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51,RbADB
C++/CLI ]8Eci^i
int main() =V)88@W
{ %syFHUBw
System::Console::WriteLine("Hello, world!"); M9_G
} `PV+.V}
7W{xK'|]
3 &aBU[
C# (C Sharp) Aqc
Cb[1r
class HelloWorldApp fmDn1N-bG
{ lur$?_gt
public static void Main() m'L7K K-Y)
{ 'aq9]D_k
System.Console.WriteLine("Hello, world!"); $r>\y (W
} lphELPh
} u$3wdZ2&m
6m=FWw3y
O%w"bEr)N
COBOL \[nvdvJv
IDENTIFICATION DIVISION. %Ydzzr3
PROGRAM-ID. HELLO-WORLD. >z(AQ
)yHJc$OlMx
ENVIRONMENT DIVISION. w<m)T
m|7lDfpb
DATA DIVISION. } Fw/WD
DE0gd
ux8
PROCEDURE DIVISION. xh7[{n[;
DISPLAY "Hello, world!". /Ir|& <yB
STOP RUN. ,>:
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yq?7!X
Common Lisp
R%(ww
(format t "Hello world!~%") oj8_e xx
Sxj _gn
Ca&p;K9FR
DOS批处理 #P)7b,3pe
@echo off ]m>N!Iu
echo "Hello, world!" v7V.,^6+
z>,fuR?9
zoj3w|G
Eiffel wFgL\[$^|
class HELLO_WORLD SP&Y|I$:
FqvMi:F
creation >N&C-6W
make d )}@0Q
feature @V9qbr=Z
make is /7bIE!Cn
local M~6x&|2
io:BASIC_IO bZ/4O*B
do Cb{n4xKW6
!!io fnZa IV=H
io.put_string("%N Hello, world!") SM<kR1bo
end -- make f9Vxtd
end -- class HELLO_WORLD C< :F<[H
U%Igj:%?;`
k:+Bex$g
Erlang #ny&bJj
-module(hello). np>RxiB^
-export([hello_world/0]). 5i 6*$#OM_
K*ZH<@o4
hello_world() -> io:fwrite("Hello, World!\n"). g _2m["6*
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:4{;^|RgU
Forth WWO@ULGY
." Hello, world!" CR V4('}Q!
+
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97$1na3gq
Fortran #WOb&h
WRITE(*,10) a^9-9*
10 FORMAT('Hello, World!') aCL_cVOMR
STOP A?
=(q
END mXX9Aa>
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]^='aQ
HTML *kI1NchF
<HTML> a ]PS`
<HEAD> Jkc1ih`^
<TITLE> Hello World! </TITLE> @Ju!|G9z/p
</HEAD> NwK(<dzG
<BODY> ^'g1? F$_
<p>Hello World!</p> QQd%V#M?
</BODY> *@M7J
</HTML> ~)RKpRga\p
4_#yl9+
wbC'SOM
HQ9+ %cWy0:F5VY
H [7QIpt+FSo
M5SAlj
\2rCT~x
INTERCAL {kLL&`ii
PLEASE DO ,1 <- #13 WsA(8Ck<
DO ,1 SUB #1 <- #238 IT`r&;5
DO ,1 SUB #2 <- #112 %cDTy]ILu
DO ,1 SUB #3 <- #112 nUAs:Q
DO ,1 SUB #4 <- #0 ..ig jc#UF
DO ,1 SUB #5 <- #64 /r4QDwu
DO ,1 SUB #6 <- #238 aZe[Nos
DO ,1 SUB #7 <- #26 iNTw;ov
DO ,1 SUB #8 <- #248 fP>K!@!8
DO ,1 SUB #9 <- #168 YWfw%p?n"
DO ,1 SUB #10 <- #24 7VP[U,
DO ,1 SUB #11 <- #16 H:~41f[
DO ,1 SUB #12 <- #158 8Nr,Wq
DO ,1 SUB #13 <- #52 y6[^I'kz
PLEASE READ OUT ,1 ]FJpe^
ua
PLEASE GIVE UP k)2L<Lmn
n9J.]+@J
qR
WWG&
Java {y{&tzZ
public class Hello HWr")%EhD
{ DhQYjC[
public static void main(String[] args) </K"\EU
{ jLULf+8&
System.out.println("Hello, world!"); hL\gI(B
} iU5Aj:U3
} qlT'gUt=H
G3j&8[
Wr \rruH6
JSP '`$US;5
<% eBD7 g-
out.print("Hello, world!"); EDm,Y
%> kEM5eY
MDfE(cn2q
&^HqbLz
MIXAL D4:c)}
TERM EQU 19 the MIX console device number 4XkSj9D~z
ORIG 1000 start address 5WR(jl+M
START OUT MSG(TERM) output data at address MSG =H'7g6
HLT halt execution Bn7~ p+N
MSG ALF "MIXAL" ]-o0HY2
ALF " HELL" GEg8\
ALF "O WOR" ZMSP8(V
ALF "LD " RH,1U3?
END START end of the program p,y(Fc~]g'
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Nuva a@&^t( 1
<..直接输出..> rYnjQr2a
Hello, world! c'=p4Fcm
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<..或者..> u`l1
zMk
WcyN,5
<. kfF.Ctr1a
// 不带换行 ~E2xIhV
? "Hello, world!" giy4<
+LwE=unS
// 或者 mdu5aL
mVYLI!n}0#
// 带换行 JW!SrM xF
?? 'Hello, world!' t]Ey~-Rx
.> &j@i>(7
1*_wJ
fJ[(zjk
OCaml b"+J8W
let main () = M1Jnn4w*d
print_endline "Hello world!";; 33O@jbs@
u!([m;
x|
su~_l[6
Pascal 8oI)q4V
program Hello; ~!c~jcq]lZ
begin ' LT6%<|
writeln('Hello, world!'); +DwyMzeE
end. P)?)H]J"
nw3CI&Y`
[XA
f=x
Perl lFT_J?G$'
#!/usr/local/bin/perl +zpmy3Q
print "Hello, world!\n"; DkP%1Crdr
tlU&p'
hP4*S^l
PHP ~=5 vc''
<?php ~F`t[p
print("Hello, world!"); J4
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?> {1^9*
&lYZ=|6
~Co7 %e V
Pike ;;E "+.
#!/usr/local/bin/pike L0{ehpvM
int main() B]K@'#
{ b??k|q
write("Hello, world!\n"); ;C8'7
return 0; Ak!l}d
} A&i
7Zl-|
hB#z8D
PL/I .!kqIx*3
Test: procedure options(main); |okS7.|IX
declare My_String char(20) varying initialize('Hello, world!'); fu/v1Nhm
put skip list(My_String); ~Tv
%6iaeE
end Test; Aj06"ep
v4}kmH1
4
|$|]E
Prolog |C9qM
goal YShtoaCx>
write("hello,world!"). ?@
ei_<A{
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Python Ws[[Me,=
#!/usr/local/bin/python p<