“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。 wsdB;
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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》。 E-5ij,bHv3
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以下是用不同语言写成的Hello World程序的几个例子: <=5,(a5g
Ada ;W$w=j:
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with Ada.Text_Io; use Ada.Text_Io; tS_xa
procedure Hello is &V ^
begin Xy3g(x]
Put_Line ("Hello, world!"); Y%n{`9=
end Hello; T6/$pJl
S\yu%=h
8o%<.]
汇编语言 df21t^0/
~:ub
x86 CPU,DOS,TASM *Dd(+NI
MODEL SMALL
]*kP>
IDEAL pUCEYR
STACK 100H k=ior
X$j|/))
DATASEG ~x+:44*
HW DB 'Hello, world!$' eE#81]'6a
cAsSN.HFS
CODESEG gnKU\>2k
MOV AX, @data vJ# rW8y
MOV DS, AX 5~ *'>y
MOV DX, OFFSET HW N>F2
c)rm
MOV AH, 09H On2Vf*G@|
INT 21H kG|>_5
MOV AX, 4C00H )|59FOWg
INT 21H dcrJ,>i}
END ^Yf)lV&[
dctA`W@:-
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x86 CPU,GNU/Linux,NASM Q9 x` Uy
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). M Z|c7f&`
;Enter this into "hello.asm" then type: z</XnN
;"nasm -f elf hello.asm" N~Sue
;"ld hello.o -o hello" ~,`\D7Z3
;"./hello" mTb2d?NS
w'5dk3$"
section .data ;data section declaration CwH)6uA
msg db 'Hello World!',0AH .LGkr@P
len equ $-msg ;string length fd,}YAiX
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section .text ;code section declaration nCSd:1DY
global _start ;entry point (start of execution) D/!eov4"
_start: mov edx,len ;string length Js^r]=\F'
mov ecx,msg ;string start @Z=y'yc'y.
mov ebx,1 ;file handle: stdout 2\iD;Z#gM
mov eax,4 ;sys_write v0H>iKh7
int 80h ;kernel system call BHRrXC\
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mov ebx,0 ;return value u1pYlu9IW
mov eax,1 ;sys_exit q9a
wzj
int 80h ;kernel system call ~;O=
7
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_+R_ms
x86 CPU,Windows,MASM32 ek0;8Ds9
.386 x/jN&;"/
.model flat,stdcall EiIFVP
option casemap:none [&]YVn>kj
;Include 文件定义 {*5;:QnT
include windows.inc 7:R{~|R
include user32.inc /="D]K)%b8
includelib user32.lib ^JF_;~C
include kernel32.inc fi-&[llg
includelib kernel32.lib 6&xW9' 6b:
;数据段 XM5;AcD
.data H?/cG_^y0
szCaption db 'A MessageBox!',0 7]HIE]#
szText db 'Hello,world!',0 K&"Pm9
;代码段 &oK/]lub
.code R^Eu}?<f
start: +D{*L0$D"
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK xzGsfd
invoke ExitProcess,NULL "=Fn.r4I
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> !\D]\|Bo
end start [0,q7d?"
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AWK (j"~]T!)1
BEGIN { print "Hello, world!" }
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PB3!;
BASIC VkP:%-*#v
传统版BASIC(例如GWBASIC): Xm:gD6;9
Iy1Xn S*
10 PRINT "Hello, world!" s%TO(vT
20 END @*`UOgP7
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或在提示符输入: ;(iUY/ h[h
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?"Hello, world!":END Iz$W3#hi
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现代版BASIC(例如Quick BASIC): B6!<@*BI
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Print "Hello, world!" $P}]|/Yb
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以下的语句在Quick BASIC中同样有效: '>WuukC
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? "Hello,world!" Qmc;s{-r;
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BCPL m=y,_Pz>U
GET "LIBHDR" T[$hYe8%^
$^+KR]\q
LET START () BE z?) RF[
$( v.^
'x
WRITES ("Hello, world!*N") $X\`
7`v
$) 63dtO{:4
#?|1~HC
@aPu}Hi
Befunge n~>CE"q
"!dlrow olleH">v ~aq?Kk
, +nyN+X34B
^_@ y8WXp_\
`::(jW.KO
UeiJhH,u
Brainfuck iKEKk\j-w
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< L"vG:Mq@D
+++++++++++++++.>.+++.------.--------.>+.>. cS ;=_%~
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C @f01xh=8
#include <stdio.h> u9~V2>r\
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int main(void) -N!soJ<
{ `&Of82*w
printf("Hello, world!\n"); VS@W.0/
return 0; c68$pgG
} RknSWuFKt
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C++ AeQ&V d|
#include <iostream> zSvHv s
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int main() @KRn3$U
{ Fu$Gl$qV?%
std::cout << "Hello, world!" << std::endl; ]` Gz_e
return 0; QR"O)lP
} M
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C++/CLI 6!PX!
UkF
int main()
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{ Gg,k
System::Console::WriteLine("Hello, world!"); T`0gtSS
} *E q7r>[
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C# (C Sharp) zgOwSg8
class HelloWorldApp b0CaoSWo
{ M@ZpgAfq
public static void Main() <T~fh>a
{ RpXG gw
System.Console.WriteLine("Hello, world!"); 1UWgOCc
} EC\:uK
} gK_[3FiKt
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COBOL ;xC~{O
IDENTIFICATION DIVISION. HQj4h]O#
PROGRAM-ID. HELLO-WORLD. /faP]J)
:v ~q
ENVIRONMENT DIVISION. ~l(tl[
}(IDPaJ
DATA DIVISION. BJ2W}R
oa|*-nw
PROCEDURE DIVISION. '"p*FN
DISPLAY "Hello, world!". | Dpfh
STOP RUN. otVdx&%]
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Common Lisp MM$"6Jor
(format t "Hello world!~%")
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tF1%=&ss
wDY7B
DOS批处理 gxtbu$
@echo off tdK^X1
echo "Hello, world!" +W[#;)ea(
:u+#:8u
<G =@Gl
Eiffel 9uoj3Rh<
class HELLO_WORLD B>21A9&
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creation UoT}m^ G
make ITPpT
feature JNCtsfd
make is &Y2P! \\2
local -zkL)<7
io:BASIC_IO l:}4
6%
do -%$
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!!io ee[NZz
io.put_string("%N Hello, world!") Pt;Ahmi
end -- make [,X,2
end -- class HELLO_WORLD !9OgA
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Erlang QP0X8%+p
-module(hello). ZO$T/GE6%
-export([hello_world/0]). 7OHw/-j\
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hello_world() -> io:fwrite("Hello, World!\n"). [)c|oh%
84cH|j`w
=i %w_e
Forth RL8wSK
." Hello, world!" CR ZJM^P'r.1c
Bq`kVfx
k;X1x65uP
Fortran zwK;6&(W
WRITE(*,10) K7Tell\`
10 FORMAT('Hello, World!') =%G[vm/-)
STOP qE=OQs9
END Lwk-
W4Q]<<6&
C{^@. 8:
HTML iP_Xr~w
<HTML> z5w|+9U
<HEAD> .q }k
<TITLE> Hello World! </TITLE> %W@IB8]Vr
</HEAD> nmrk-#._@9
<BODY> S3wH
M
<p>Hello World!</p> qRLypm
</BODY> 6%1o<{(%f
</HTML> y Dw!u[:
sRnMBW.
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HQ9+ KK|Jach
H (Ad!hyE(
_.LWc^Sg
!-~(*tn
INTERCAL &|] ^ u/
PLEASE DO ,1 <- #13 W{aN S@1
DO ,1 SUB #1 <- #238 c>.X c[H
DO ,1 SUB #2 <- #112 ZeV)/g,w
DO ,1 SUB #3 <- #112 v21?
DO ,1 SUB #4 <- #0 ~Wv?p4
DO ,1 SUB #5 <- #64 !~v>&bCG>9
DO ,1 SUB #6 <- #238 Z8UM0B=i
DO ,1 SUB #7 <- #26 F
tjm@:X
DO ,1 SUB #8 <- #248 j]SkBZgik
DO ,1 SUB #9 <- #168 ?yK\L-ad
DO ,1 SUB #10 <- #24 ]aL}&GlHt
DO ,1 SUB #11 <- #16 $vz%
DO ,1 SUB #12 <- #158 ^Yz05\
DO ,1 SUB #13 <- #52 ZZ7U^#RT
PLEASE READ OUT ,1 d5hE!=
PLEASE GIVE UP =<xbE;,0
k=_@1b-
W -&5
v
Java _Oq\YQb v
public class Hello miqCUbcU
{ xM\ApN~W
public static void main(String[] args) K(S/D(\
FL
{ n
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System.out.println("Hello, world!"); >j3N-;o@?
} { VO4""m
} ?Q2pD!L{
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@Iu-F4YT
JSP l-EQh*!j
<% T(F8z5s5
out.print("Hello, world!"); =ndKG5
%> W^f#xrq>
TVA1FD
O6]~5&8U.
MIXAL W[s>TDc`v
TERM EQU 19 the MIX console device number EM}z-@A>
ORIG 1000 start address 5{Wl(jwb
START OUT MSG(TERM) output data at address MSG RkzBn
HLT halt execution P+h&tXZn8
MSG ALF "MIXAL" 67?5Cv
ALF " HELL" G]CY3xw98
ALF "O WOR" H;1}Nvvd
ALF "LD " ;\N*iN#K
END START end of the program $EF@x}h:A
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M-Bw9`#Jw
Nuva ~JpUO~i/
<..直接输出..> _!7o
Hello, world! |sz9l/,lG
(i8t^
<..或者..> %3j5Q
)VC) }
<. PQ>JoRs
// 不带换行 T^_9R;
? "Hello, world!" nCU4a1rZ
L_,U*Jyo
// 或者 jL SZ#H
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// 带换行 ~@JC1+
?? 'Hello, world!' &
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.> 7}k8-:a%
hr5)$qZW
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OCaml wG
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let main () = c3##:"wr
print_endline "Hello world!";; S J5kA`
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|+;"^<T)l
Pascal VzesqVx
program Hello; )Yml'?V"
begin ?}[keSEh>
writeln('Hello, world!'); VM[8w`
end. @d\F; o<
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Perl n>WS@b/o
#!/usr/local/bin/perl XJ;/kR
print "Hello, world!\n"; 00i9yC8@6
(agdgy:#
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PHP 3>+;G4
<?php mX89^
print("Hello, world!"); fvDwg
?> *M:Bhw
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n[@Ur2&