4 Commits

Author	SHA1	Message	Date
261067224	15eb607fb4	for循环体现多态	2026-10-07 21:16:54 +08:00
261067224	2a89b2278e	子类Square	2026-10-07 21:06:35 +08:00
261067224	24392c9022	子类Circle”	2026-10-07 21:04:35 +08:00
261067224	5f97747490	父类shape和方法area的return0	2026-10-07 20:55:51 +08:00