“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。 `*y%[J,I#
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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》。 52.%f+Oa
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以下是用不同语言写成的Hello World程序的几个例子: 9yWSlbPr]
Ada Kj/Lcx;bh
with Ada.Text_Io; use Ada.Text_Io; x\aCZ
procedure Hello is =+w/t9I[
begin &/8B(0<
Put_Line ("Hello, world!"); qflOi8
end Hello; 1^tM%2rP'
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汇编语言 l._g[qa
=4
NKXP~C
x86 CPU,DOS,TASM $J =`fx
MODEL SMALL {=6CL'_
IDEAL cv-;fd>'
STACK 100H T$1(6<:+.
-FQc_k?VF
DATASEG iHeu<3O
HW DB 'Hello, world!$' :;K Q]<
wQ?Z y;/S
CODESEG 2Ws'3Jz
MOV AX, @data S2:G#%EAa
MOV DS, AX aj]pN,g@N
MOV DX, OFFSET HW ]sJjV
A
MOV AH, 09H k,LaFe`W
INT 21H 7ea%mg\
MOV AX, 4C00H &(h@]F!
INT 21H L~*nI d
END T@mYHKu
Mo]aB:a
>%A~ :
x86 CPU,GNU/Linux,NASM y(X^wC
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). ?d_vD@+\
;Enter this into "hello.asm" then type: ??z&w`Yy,
;"nasm -f elf hello.asm" m O"Rq5
;"ld hello.o -o hello" =yZ6 $ hK
;"./hello" R0e!b+MZ.
C:z7R" yj
section .data ;data section declaration IwR=@Ne8
msg db 'Hello World!',0AH B$MHn?
len equ $-msg ;string length UaBNoD
8i
Ew;I_
section .text ;code section declaration wcW7k(+0
global _start ;entry point (start of execution) s){R/2O3F
_start: mov edx,len ;string length q+ka}@
mov ecx,msg ;string start )kIjZ
mov ebx,1 ;file handle: stdout nPhREn!
mov eax,4 ;sys_write *i V#_
int 80h ;kernel system call FpZ5@
JPpNCC.b
mov ebx,0 ;return value [a7S?%>Bh
mov eax,1 ;sys_exit ]L?WC
int 80h ;kernel system call rh T!8dTk
74a k|(!
*
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x86 CPU,Windows,MASM32 WnhH]WY
.386 RmQ>.?
.model flat,stdcall 2=$ F*B>9
option casemap:none )h1 `?q:5
;Include 文件定义 (zw.?ADPCT
include windows.inc tR(L>ZG{
include user32.inc |WSmpuf
includelib user32.lib ~*L@|?
include kernel32.inc l"%WXi"X
includelib kernel32.lib 99~ZZG
;数据段 xP &@|Ag
.data W?0u_F
szCaption db 'A MessageBox!',0 Hk?E0.
szText db 'Hello,world!',0 y1#QP3'Z1
;代码段 2[Xe:)d
.code 06I(01M1
start: 9#a/at]
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK $x2G/5?
invoke ExitProcess,NULL mxICQ>s
b
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> FYH^axpp
end start JC9OL.Ob
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LG'1^W{a
AWK Kr%`L/%
BEGIN { print "Hello, world!" } 1pT/`x
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;0}C2Cz'
BASIC 2ZKy7p0/
传统版BASIC(例如GWBASIC): :-~x~ah-
KJ_L>$
]*
10 PRINT "Hello, world!" 9g7Ok9dF
20 END 8KWhXF
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或在提示符输入: qG0gc\C}
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?"Hello, world!":END i|fkwV,5
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现代版BASIC(例如Quick BASIC): ;V^ I>-fnm
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Print "Hello, world!" 29NP!W
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以下的语句在Quick BASIC中同样有效: Z$S0X$q}
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? "Hello,world!" t}gK)"g
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BCPL n yNHjn
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GET "LIBHDR" jyC>~}?
hcQv!!Q"k$
LET START () BE #J%Fi).^)
$( [Rzn>
WRITES ("Hello, world!*N") [}y"rs`!
$) kLbo |p"cT
h|ja67VG
\?AA:U*
Befunge kaV Ye)~
"!dlrow olleH">v HK<oNr.d52
, hYh~[Kr^@^
^_@ 6H:EBj54?
{=_xze)
Y4*?QBYA
Brainfuck *'R2Lo<C
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< >IHf5})R
+++++++++++++++.>.+++.------.--------.>+.>. 0!`!I0
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C 6/Z 8/PL
#include <stdio.h> ,@t#)HV
(ce"ED`1
int main(void) IE&G7\>(yO
{ Yq:TWeZD
printf("Hello, world!\n"); IF3 V5Q
return 0; _x?S0R1
} m\ /V 0V\
\>4x7mF!
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C++ Fprhu;h
#include <iostream> 6
i]B8Ziq{
#^q@ra
int main() b!g8NG
{ sUsIu,1Q
std::cout << "Hello, world!" << std::endl; V_pKe~
return 0; 5@~5RNrq2
} LU@+ O12
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DJHE6XJ
C++/CLI
&r
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int main() H$]FUv8
{ sB`zk[R;
System::Console::WriteLine("Hello, world!"); }pv<<7}|
} r;8$ 7C.
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h<
z#sSLE.$Z
C# (C Sharp) P4~C0z
class HelloWorldApp N9cUlrDO
{ ^v@&
q
public static void Main() U+g<lgH1J
{ vjD||!g'
System.Console.WriteLine("Hello, world!"); on0>_-n)
} Y ptP_R:2p
} sTO9>~sj
Q?W}]RW
JKs&!!
COBOL Le}-F{~`^
IDENTIFICATION DIVISION. NeY,Of|
PROGRAM-ID. HELLO-WORLD. woR }=\K
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ENVIRONMENT DIVISION. .R{P%r
B!z5P"C(~
DATA DIVISION. }4"T#
[n#
F#XzhDs
PROCEDURE DIVISION. ~UV$(5&-
DISPLAY "Hello, world!". ,Mw;kevw
STOP RUN. yS(tF`H[
OAtn.LU
@60/IE{-v
Common Lisp QOY M/1U
(format t "Hello world!~%") &sJ%ur+G
2:& [r*
`1"Xj ^
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DOS批处理 4';(\42
@echo off bO?Us
echo "Hello, world!" C\p _
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`=cOTn52
Eiffel m;KD@E!
class HELLO_WORLD 8?&u5
.m\' |%
creation ^{Y9!R*9U*
make 0|_d{/VK4
feature >R}p*=J
make is 9q!./)
local xBi``x2eY
io:BASIC_IO ]pP [0S
do yjxv D
!!io 96
!e:TU
io.put_string("%N Hello, world!") z gDc=
end -- make seo.1.Da2
end -- class HELLO_WORLD 2DTBL:?`
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:IlJQ{=W
Erlang 'VTLp.~G~
-module(hello). rfS kQT
-export([hello_world/0]). 73OYHp_j
(Cjw^P|Y@
hello_world() -> io:fwrite("Hello, World!\n"). _l;$<]re\k
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g}=opw6z
Forth <rpXhcR
." Hello, world!" CR \zPcnDB
/{d5$(Y"
@-QDp`QtI
Fortran y6S:[Z{~A
WRITE(*,10) OJF41Z
10 FORMAT('Hello, World!') S
2SJFp
STOP Zl+Ba
END Xi!`+N4
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|SF5'\d'
HTML ]DO"2r
<HTML> sAz]8(Fi0
<HEAD> ]#VNZ#("
<TITLE> Hello World! </TITLE> " ~&d=f0m
</HEAD> {)d{:&*K.
<BODY> k3wAbGp
<p>Hello World!</p> v}AVIdR
</BODY> >?Ps5n]b
</HTML> wO
{-qrN
&p2fMVWJ7
EFb"{L
HQ9+ `vPc&.-K
H w,QO!)j!
0'9zXJ"
5E!G
INTERCAL oj1,DU
PLEASE DO ,1 <- #13 P@z,[,sy"$
DO ,1 SUB #1 <- #238 W;Ei>~E
DO ,1 SUB #2 <- #112 c _v;"Q Z
DO ,1 SUB #3 <- #112 RIO4`,
DO ,1 SUB #4 <- #0 5==}8<$
DO ,1 SUB #5 <- #64 }}'0r2S
DO ,1 SUB #6 <- #238 V]$Tbxg
DO ,1 SUB #7 <- #26 It/IDPx4ga
DO ,1 SUB #8 <- #248 :"oQ _bLT
DO ,1 SUB #9 <- #168 xi
=\]
DO ,1 SUB #10 <- #24 ^
|^Q(
DO ,1 SUB #11 <- #16 LiF(#OuZ
DO ,1 SUB #12 <- #158 S!;:7?mq
DO ,1 SUB #13 <- #52 V=v7<I=]
PLEASE READ OUT ,1 'sCj|=y2Qc
PLEASE GIVE UP c$>$2[*=
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R3
r
XeT{y]lkd
Java &m>sGCZ
public class Hello ?$#,h30
{ (7qdrAeP
public static void main(String[] args) #K3`$^0 s
{ >$yqx1=jW
System.out.println("Hello, world!"); DVWqrK}q
} *l[;g
} _V`Gmy[]p
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}H4Z726
JSP Rn-RMD{dh
<% LT3ViCZ-n
out.print("Hello, world!"); m%bw$hr
%> /bd1Bi
LPNJuz
_K?{DnTb
MIXAL 2/c^3[ccR
TERM EQU 19 the MIX console device number rIE
m
ORIG 1000 start address 2yyJ19Iul
START OUT MSG(TERM) output data at address MSG $C;) Tlh
HLT halt execution dSkW[r9Z%l
MSG ALF "MIXAL" E?z~)0z2`
ALF " HELL" ^atX/
ALF "O WOR" cN5,\I.
ALF "LD " !A\Qwg>
END START end of the program \MA4>
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w)hH8jx{
Nuva $dp;$X3
<..直接输出..> v{Rj,Ou
Hello, world! : ;nvqb d
cBO.96ZHE
<..或者..> U '#Xwax
E26 zw9d
<. avb'J^}f
// 不带换行 Vk/!_)
? "Hello, world!" ?J<V-,i
bk-veJR
// 或者 TA.ugF)h
.^fVm
// 带换行 J m5).
?? 'Hello, world!' PE IUKlX
.> tf VK
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5u<F0$qHc
OCaml
;PO{
ips
let main () = vnNX)$f
print_endline "Hello world!";; B~[QmK
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