“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。 nXcOFU
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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》。 F5;x>;r
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以下是用不同语言写成的Hello World程序的几个例子: *[[TDduh&
Ada <)$b=z
with Ada.Text_Io; use Ada.Text_Io; 7"Iagrgw
procedure Hello is U4$CkTe2Y
begin 0`l(c
Put_Line ("Hello, world!"); 'CO3b,
end Hello; k=qb YGK
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asn
汇编语言 L
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x86 CPU,DOS,TASM YkbZ 2J*-
MODEL SMALL \%011I4
IDEAL S)[$F}
STACK 100H ^\zf8kPti
Um\_G@
DATASEG \LZVazXD
HW DB 'Hello, world!$' -
d(RK_
SRf.8j
CODESEG !]z6?kUK
MOV AX, @data S`?cs^?
MOV DS, AX gw);b)&mx
MOV DX, OFFSET HW 9Wi+7_)
MOV AH, 09H a)GT\1q
INT 21H 6t(I.>-
MOV AX, 4C00H dY%>C75O
INT 21H >,. x'{
END 4P\?vz"
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xnm!$ $W
x86 CPU,GNU/Linux,NASM G.#sX
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). \@i4im@%xU
;Enter this into "hello.asm" then type: kan4P@XVS
;"nasm -f elf hello.asm" m6=Jp<
;"ld hello.o -o hello" =ADdfuKN
;"./hello" ;+h-o
'
;PHuMY#X
section .data ;data section declaration geB]~/-p
msg db 'Hello World!',0AH Ue22,Pp6
len equ $-msg ;string length >k{KwFB^S
e+=P)Zp/
section .text ;code section declaration ^6U0n!nU
global _start ;entry point (start of execution) ($ l
t@j
_start: mov edx,len ;string length NN;'QiE
mov ecx,msg ;string start ]aF!0Fln~
mov ebx,1 ;file handle: stdout 79JU
mov eax,4 ;sys_write f.&((z?rC
int 80h ;kernel system call Pwh0Se5Z
d*{NAq'9X
mov ebx,0 ;return value V
K)%Us-
mov eax,1 ;sys_exit o1(?j}:c|
int 80h ;kernel system call (jY -MF3
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/Sag_[i
x86 CPU,Windows,MASM32 9s}y*Vp
.386 B Ctm05
.model flat,stdcall 8S_v} NUm
option casemap:none };=44E'7
;Include 文件定义 CnA0^JX
include windows.inc AT%@T|
include user32.inc 4Cdl^4(LT
includelib user32.lib !{,
`h<
include kernel32.inc pNzSy"Y$
includelib kernel32.lib ] oh.w
;数据段
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.data TQ\\/e:
szCaption db 'A MessageBox!',0 <CnTiS#
szText db 'Hello,world!',0 lZa L=HS#L
;代码段 sjISVJ?
.code xEfz AJ5&
start: 0=^A{V!m
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK M>BcYbXf
invoke ExitProcess,NULL }JKK"d}U
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> BCK0fk~
end start T+y3Ph--^
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;%H/^b.c
AWK K !MIA
BEGIN { print "Hello, world!" } |tkhsQ-;
i$ :\,
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BASIC b\l +S2
传统版BASIC(例如GWBASIC): sZ!/uN!6
CI };$4W~
10 PRINT "Hello, world!" hnbF}AD
20 END C/{tvY /o
L,B#%t
或在提示符输入: gADEjr*H
R} #6
?"Hello, world!":END DWQ@]\
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现代版BASIC(例如Quick BASIC): `zJTVi4
>sL"HyY#H
Print "Hello, world!" '&.QW$B\B_
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以下的语句在Quick BASIC中同样有效: lB0: 4cIj
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? "Hello,world!" _
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i!!1^DMrw
BCPL -8]M
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GET "LIBHDR" 85Hb~|0
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LET START () BE x*" 0dYH
$( G/*0*&fW
WRITES ("Hello, world!*N") P;#}@ /E
$) oq<n5
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c8'!>#$
Befunge )OAd[u<
"!dlrow olleH">v J,bE[52
, 9ntXLWK7e
^_@ 3 oG5E"G
n2JwZ?
!\0UEC
Brainfuck HktvUJ(Ii
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< -|l^- Qf!
+++++++++++++++.>.+++.------.--------.>+.>. -2dk8]KB]
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) DzbJ}
C Fj`6v"h
#include <stdio.h> (>E70|T
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int main(void) Zljj
{ `nxm<~-\
printf("Hello, world!\n"); kAEm#oz=g
return 0; xt%-<%s %f
} 4EO,9#0
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YmS}*>oz
C++ f,?P1D\
#include <iostream> g?'4G$M
c:/H}2/C
int main() bk**% ]
{ =c-,uW11[
std::cout << "Hello, world!" << std::endl; 1?6;Oc^
return 0; <3wfY
#;><
} i U^tv_1
5s >UM@})
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C++/CLI Wn(pz)+Y
int main() 4&Q.6HkL
{ O;u&>BMk
System::Console::WriteLine("Hello, world!"); ~"E@do("
} VFZ_Vw
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OIuEC7XM^C
C# (C Sharp) O43emL3
class HelloWorldApp #)aUKFX
{ /mb?C/ CI
public static void Main() ;$Eg4uX
{ *20$u% z2
System.Console.WriteLine("Hello, world!"); <_S>- ;by
} ZYy,gu<
} Q)\~=/Lb
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COBOL hcvWf\4'#q
IDENTIFICATION DIVISION. >i> %@
PROGRAM-ID. HELLO-WORLD. rpk
)i:k\
r>=)Y32Q
ENVIRONMENT DIVISION. \;z*j|;B
p nS{W
\Q
DATA DIVISION. >AT{\W!N
E1U~ew
PROCEDURE DIVISION. A8?uCkG
DISPLAY "Hello, world!". &*wN@e(c
STOP RUN. jpl"KN?X
H1]An'qz,
fa7I6 i
Common Lisp Pd99vq/
(format t "Hello world!~%") n5Ad@B g
[MmOPm}@
c:SA#.
DOS批处理 6R%Ra
@echo off ZSKSMI%D
echo "Hello, world!" 0-ISOA&
#K|:BS
y#'|=0vTvP
Eiffel V^a]@GK:
class HELLO_WORLD J2"n:
TG\3T%gH/s
creation H'fmQf
make a9CY,+z5B
feature Le&SN7I
make is r sf +dC
local <1HbjRw
io:BASIC_IO nu1s
do *C~O[:6D
!!io R^`# xQ
io.put_string("%N Hello, world!") 9sQ4
$
end -- make kKU,|>3h
end -- class HELLO_WORLD \/3Xb
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GXV<fc"1
Erlang G@Z,Hbgm
-module(hello). N`FgjnQ`
-export([hello_world/0]). "XWrd[Df
R<}n?f\#JZ
hello_world() -> io:fwrite("Hello, World!\n"). }B{bM<dF
K&zp2V
"~y@rqIba
Forth qNI2+<u)j
." Hello, world!" CR ('q u#.'
y$=$Yc&Ub
uqaP\
Fortran K5O8G
WRITE(*,10) |Co ?uv
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10 FORMAT('Hello, World!') {5tb.{
STOP ,q F;#nB-
END g5gq{KlU
}g1V6`8&
% #!`>S)O
HTML Mqu>#lL
<HTML> q*,g
<HEAD> EV}c,*);y
<TITLE> Hello World! </TITLE> K
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</HEAD> "*E#4e[
<BODY> Rf)lFi
<p>Hello World!</p> & 5!.!Z3
</BODY> :"Vfn:Q
</HTML> Uq0GbLjv"
YK[PC]w
r=Up-(j
HQ9+ ai7*</ls
H N/ 7Q(^
E1(2wJ-3"
KkVFY+/)
INTERCAL N"X;aVFs_
PLEASE DO ,1 <- #13 ?[n{M
DO ,1 SUB #1 <- #238 a}~Xns
DO ,1 SUB #2 <- #112 y8=(k}=3
DO ,1 SUB #3 <- #112 NA5AR*f'
DO ,1 SUB #4 <- #0 B3Id}[V
DO ,1 SUB #5 <- #64 Xr54/.{&@
DO ,1 SUB #6 <- #238 fAHK<G4
DO ,1 SUB #7 <- #26 f>LwsP
DO ,1 SUB #8 <- #248 l+e L:C!
DO ,1 SUB #9 <- #168 02U5N(s
DO ,1 SUB #10 <- #24 5$kv,%ah
DO ,1 SUB #11 <- #16 1'qllkT
DO ,1 SUB #12 <- #158 2b|$z"97jj
DO ,1 SUB #13 <- #52 %d..L-`]ET
PLEASE READ OUT ,1 >'>onAIL
PLEASE GIVE UP 8cq H0{
3l?D%E]P
7Sc._G{[%
Java
~f/nq/8
public class Hello cVHv>nd#
{ =.q
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public static void main(String[] args) $i s|B9B
{ JZQT}
System.out.println("Hello, world!"); Gw3H1:yo
} ]JQ';%dne
} *\9JIi 2
H5@N<v5u
(DzV3/+p^
JSP iOCx7j{BS
<% ?LP&VU1
out.print("Hello, world!"); 7_,)"J2^
%> "c[ D0{\{
uWs5+
>EQd;Af
MIXAL }]0f -}
TERM EQU 19 the MIX console device number 9mdp\A
ORIG 1000 start address h?f)Bt}ry
START OUT MSG(TERM) output data at address MSG h{ s- e.
HLT halt execution j7&57'
MSG ALF "MIXAL" $ b Q4[
ALF " HELL" C]22 [v4
ALF "O WOR" x.Sq2rw]V
ALF "LD " SDY!! .
END START end of the program R)s@2S
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QfI=
Nuva 5ZG-3qj
<..直接输出..> %G~f>
Hello, world! cN/8b0C
cTy;?(E
<..或者..> Im9^mVe
< *
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<. F8(6P1}E
// 不带换行 giU6f!%
? "Hello, world!" _x<CTFTL
Vz$X0C=W;H
// 或者 [cSoo+Mlx
Vx1xULdY
// 带换行 KMsm2~P
?? 'Hello, world!' hhu!'(j
.> Isa]5>
*ujn+0)[
P4vW.|@
OCaml tx=~bm"*?
let main () = >L6V!
print_endline "Hello world!";; t/?x#X
$0[T=9q <+
}nrl2yp:%
Pascal ;U6z|O7L
program Hello; a~b^`ykcWP
begin AplXl=
writeln('Hello, world!'); QO;W}c:N
end. mz\d>0F U.
k@qn'Zi
=;(w Bj
Perl R8
1z|+c|_
#!/usr/local/bin/perl X(m&
print "Hello, world!\n"; OS c&n>\t
:cv_G;?
}]cKOv2
PHP a=LjFpv/]
<?php ?(Dk{-:T'
print("Hello, world!"); RC5b'+E