perl 中一个随机编故事的程序（rand随机函数的应用举例）+好的程

use strict;
use warnings;

#定义变量
my $count;
my $input;
my $number;
my $sentence;
my $story;

#定义四个数组
#定义了人物数组
my @nouns=
(
	'Dad','TV','Mom','Groucho','Rebecca','Harpo','Robin Hood','Joe and Moe',);

#定义了动作数组
my @verbs=
(
	'ran to','giggled with','put hot sauce into the orange juice of','exploded','dissolved','sang stupid songs with','jumped with',);

#定义了地点数组
my @prepositions=
(
	'at the store','over the rainbow','at the beach','before dinner','in New York City','in a dream','around the world',);


do 
{
	#每次运行以前，清空$story的内容
	$story='';
	#以下是随机组合生成故事
	for ($count =0;$count<6;$count++)
	{
		#我们划分一下结构，scalar @nouns 是获取@nouns数组元素的个数，然后用rand总这几个数中随机生成几个，最后int是将得到的数取整
		$sentence =$nouns[int(rand(scalar @nouns))]
		." "
		.$verbs[int(rand(scalar @verbs))]
		." "
		.$nouns[int(rand(scalar @nouns))]
		." "
		.$prepositions[int(rand(scalar @prepositions))]
		.'.';
		$story .=$sentence;
	}
	print "n",$story,"n";
	print "nType "quit"to quit,or press Enter to continue:";
	$input=<STDIN>;
}
#这里是利用正则表达式来匹配首字符是q的字符串，如果有，那么就退出，/^是匹配起始位置，/i是不区分大小写
until ($input=~/^s*q/i);
	exit;