“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。 7Bs:u
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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》。
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以下是用不同语言写成的Hello World程序的几个例子: hcX`X2^
Ada +rN&@}Jt.
with Ada.Text_Io; use Ada.Text_Io; ~Kiu"
g
procedure Hello is f2.|[
begin .d;|iwl
Put_Line ("Hello, world!"); }P*x/z~
end Hello; 3D^!U}E
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汇编语言 I;GbS`
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x86 CPU,DOS,TASM 45aFH}w:
MODEL SMALL ,.,spoV
IDEAL 4qvE2W}&
STACK 100H ZgI ?#e
Y:#nk.}>
DATASEG kT1 2
HW DB 'Hello, world!$' p"tCMB
Wz&[cj
CODESEG _/[}PQC6G
MOV AX, @data ,qu7XFYrY
MOV DS, AX ^_5t5>
MOV DX, OFFSET HW d]r?mnN W
MOV AH, 09H 155vY
INT 21H F!qt=)V@w
MOV AX, 4C00H LCMZw6p
INT 21H <Gw>}/-^
END reI4!,x
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bx._,G
x86 CPU,GNU/Linux,NASM '4e,
e|r
;"Hello World" for Linux on Intel 80x86 using nasm (Intel syntax). 3](At%ss
;Enter this into "hello.asm" then type: %n)H(QPW
;"nasm -f elf hello.asm" kK%@cIXS3
;"ld hello.o -o hello" CAbR+y
;"./hello" vp&N)t_
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section .data ;data section declaration 6^NL>|?
msg db 'Hello World!',0AH 8k9Yoht
len equ $-msg ;string length o>75s#=
b=
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section .text ;code section declaration /H~]5JZ3-E
global _start ;entry point (start of execution) }F4%5go
_start: mov edx,len ;string length ;|r<mT/,
mov ecx,msg ;string start =HHtLW.|,
mov ebx,1 ;file handle: stdout JsK_q9]$e
mov eax,4 ;sys_write Ev]oPCeA
int 80h ;kernel system call :3A^5}iz
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mov ebx,0 ;return value moCr4*jDX,
mov eax,1 ;sys_exit 6(8zt"E
int 80h ;kernel system call ZO8r8
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x86 CPU,Windows,MASM32 B+4WnR1%T
.386 RXw }Tb/D8
.model flat,stdcall &|I{ju_
option casemap:none -58Sb"f
;Include 文件定义 z`:tl7
include windows.inc F~C7$
include user32.inc
Fp~0 ^
includelib user32.lib
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include kernel32.inc MmH(dp+
includelib kernel32.lib 63HtZ=hO7
;数据段 r*f:%epB%
.data d$B+xW
szCaption db 'A MessageBox!',0 WXFCe@
szText db 'Hello,world!',0 3eN(Sw@p
;代码段 <RCeY(1
.code ~tZy-1
start: t*wV<b
invoke MessageBox,NULL,offset szText,offset szCaption,MB_OK n'9&q]GN|
invoke ExitProcess,NULL M,sZ8eeq
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> gQ$0 |0O
end start 6QePrf
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BEGIN { print "Hello, world!" } yC\!6pg
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BASIC @r]1;KG
传统版BASIC(例如GWBASIC): 1xj w=
48LzI@H&
10 PRINT "Hello, world!" u85?f
20 END f"Kl?IN8
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或在提示符输入: A\-r%&.
9)J)r\
?"Hello, world!":END C *]XQ1F4
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现代版BASIC(例如Quick BASIC): jwO7r0?\`G
#B@*-
Print "Hello, world!" JlE b
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以下的语句在Quick BASIC中同样有效: s)}EMDY
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? "Hello,world!" j$Vtd&
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BCPL ,
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GET "LIBHDR" )F m'i&F_
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LET START () BE sfR0wEqI
$( Fiaeo0
WRITES ("Hello, world!*N") @vPGkM#oW
$) ]69z-;
C
A $R
J=B,$4)9
Befunge cdTG ]n
"!dlrow olleH">v ALt^@|!d
, uO4R5F|tL
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j1K?QH=e#{
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Brainfuck i+~H~k}"X
++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<< @T)>akEOt
+++++++++++++++.>.+++.------.--------.>+.>. YzYj/,?r
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C B+lnxr0t
#include <stdio.h> gsVm)mkd
[-h=L
Jf#
int main(void) [-2Tj)P
C
{ .83z =
printf("Hello, world!\n"); k@Bn}r
return 0; #R#|hw
} ]]/p.#oD,
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oD_#oX5\
C++ M[6WcH0/T
#include <iostream> ]?V2L`/
9`G}GU]@}
int main() !uN_<!
{ FmhN*ZXr#
std::cout << "Hello, world!" << std::endl; z6'l" D'h
return 0; L87=*_!B;
} %i@Jw
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C++/CLI rQ&F Gb
int main() )P9&I.a8
{ +A<7:`sO
System::Console::WriteLine("Hello, world!"); p"QV| `
} '/@i}
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C# (C Sharp) ^A$p)`KR
class HelloWorldApp =EUi|T4:
{ s`o_ER
public static void Main() =:Lc-y >
{ 6Lz:J:Q)
System.Console.WriteLine("Hello, world!"); ::!{f+Up
} &u0on)E
} s3oQ( wC %
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COBOL 89[OaT_hs
IDENTIFICATION DIVISION. XZ_vbYTj
PROGRAM-ID. HELLO-WORLD. =QW:},sp
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ENVIRONMENT DIVISION. leO..M
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DATA DIVISION. 8~v E
k[/`G5
PROCEDURE DIVISION. v v]rXJu1
DISPLAY "Hello, world!". V,>uM
>$
STOP RUN. ,{g B$8z^
)k&!&
B/bS:
Common Lisp G$CI~0Se:
(format t "Hello world!~%") C%;J9(r
e18}`<tW-
6" |+\
DOS批处理 Fes/8*-
@echo off HsAKz]Mq
echo "Hello, world!" k>!A~gfP~
A IsXu"
(zhi/>suG
Eiffel u;=a=>05IR
class HELLO_WORLD _A=Pr_kN
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creation !T1)tGrH
make !z?;L_Lb
feature A9ru]|?
make is %<;PEQQ|C
local _2nNCu (
io:BASIC_IO mY!&*nYn|
do n]snD1?KX
!!io 8?&!@3n
io.put_string("%N Hello, world!") h}f l:J1C
end -- make ZqJyuTPv
end -- class HELLO_WORLD {{Z3M>Q
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Erlang
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-module(hello). {%XDr,myd
-export([hello_world/0]). j$}W%ibj
dnstm@0k
hello_world() -> io:fwrite("Hello, World!\n"). ~ A4_
#~:@H&f790
o :_'R5
Forth
d/&~IR
." Hello, world!" CR [qQ~\]
<wO8=bem
cA25FD
Fortran LV$`bZ
WRITE(*,10) !&@!:=X,
10 FORMAT('Hello, World!') 4%,E;fB?=
STOP ~+bS D<!b
END P |kfPohI=
nZ~J&QK-
1bpjj'2%x
HTML Ah1fcXED
<HTML> i")ucrf
<HEAD> ky|Py
<TITLE> Hello World! </TITLE> h-=lZ~W~
</HEAD> t.= 1<Ed
<BODY> Kf'oXCs
<p>Hello World!</p> J?84WS
</BODY> `HJRXoLySW
</HTML> GJbU1k]
ad'C&^o5
wEMg~Hh
HQ9+ -KFozwr5/
H @#KZ2^
^{w]r5d
E>3(ff&
INTERCAL R,KoymXP
PLEASE DO ,1 <- #13 */E5<DO
DO ,1 SUB #1 <- #238 =U_O;NC
DO ,1 SUB #2 <- #112 }='1<~0
DO ,1 SUB #3 <- #112 <ZgbmRY8
DO ,1 SUB #4 <- #0 M3/_E7Qoj
DO ,1 SUB #5 <- #64 gDBdaxR<
DO ,1 SUB #6 <- #238
9M!J7 W
DO ,1 SUB #7 <- #26 D}6~2j
DO ,1 SUB #8 <- #248 fKjUEMRK
DO ,1 SUB #9 <- #168 oJbMUEQQq
DO ,1 SUB #10 <- #24 ]Z#=w
DO ,1 SUB #11 <- #16 MNZD-[
DO ,1 SUB #12 <- #158 p:CpY'KV_
DO ,1 SUB #13 <- #52 D+xHTQNTL
PLEASE READ OUT ,1 `dK%I
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PLEASE GIVE UP R3ru<u>k&
sqP (1|9
1*ui|fuK
Java i\z ,)xp
public class Hello .iXIoka
{ jj8h>"d
public static void main(String[] args) n*vzp?+Y
{ l~i&r?,]^
System.out.println("Hello, world!"); % C.I2J`_
} Qfd4")zhG
} 13KfI
uf<nVdC.
y0f"UH/
JSP yJGM"$
<% l=?G"1
out.print("Hello, world!"); /1R` E9
%> t>izcO
1#-=|:U
TSHQ>kP
MIXAL m C&*K
TERM EQU 19 the MIX console device number \C.s%m
ORIG 1000 start address w5tcO%+k1
START OUT MSG(TERM) output data at address MSG vS_Ji<W~E
HLT halt execution -k I;yL
MSG ALF "MIXAL" "g>, X[g
ALF " HELL" )T26cT$
ALF "O WOR" wtpz ef=
ALF "LD " jizp\%W+
END START end of the program B+8B<xZ
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mcFJ__3MAV
Nuva x\MzMQ#Bf
<..直接输出..> xgV(0H}Mf
Hello, world! B6gn(w3
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<..或者..> l'0fRQc
^B`*4
<. FyV)Nmc%t
// 不带换行 WfF~\DlrD
? "Hello, world!" pNIu;1M5a
Tz{f5c&
// 或者 {, `)
[c_o.`S_\
// 带换行 oe*Y(T\G
?? 'Hello, world!' 27q=~R}
.> "Gh5
^$w?j
ql_GN[c/
uiQR RT
OCaml G34fxhh
let main () = Oj ?
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print_endline "Hello world!";; *8?0vkZZ2
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N,M[Opm
Pascal LWp#i8,
program Hello; 0v/}W(
begin TCI%Ox|a
writeln('Hello, world!'); 1P[[PvkD6
end. /3pvq%i
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]
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Perl AYnk.H-v
#!/usr/local/bin/perl -cqR]'u
print "Hello, world!\n"; _2N7E#m" S
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PHP R%\K<#^\
<?php ^<