<?php
require_once 'book.php';
$book = new book();
$book->setTitle("ハリーポッター");
print $book->getTitle();
print $book->buyBook(400);
<?php
require_once 'book.php';
$book = new book();
$book->setTitle("ハリーポッター");
print $book->getTitle();
print $book->buyBook(400);
