Help in deriving a class

[Junaid2pac]

Can someone explain how to derive a class and explain the use for it???

Thank

[wtd]

The question you should be asking is "what is polymorphism, and why should I care?"

[Junaid2pac]

That was actually my next question

So ya...Any guidance will be helpful

[Junaid2pac]

K i kinda have a good idea of polymorphism and understand downcasting, but don't understand y u would upcast to the base class

[wtd]

An elephant is a mammal, but a mammal is not necessarily an elephant.

There are things an elephant can do that all mammals cannot, and if you only know you have a mammal, then you can't flex its trunk.