static void Main(string[] args)
{
Dog p = new Pudle();
p.name = "푸들이";
p.jitda();
((Pudle)p).work();
Dog j = new Jindo();
j.name = "진도이";
j.jitda();
((Jindo)j).run();
}
static void Main(string[] args)
{
Pudle p = new Pudle();
p.name = "푸들이";
p.jitda();
p.work();
jindo j = new jindo();
j.name = "진도이";
j.jitda();
j.run();
}