Delegate: Delegate is A function Pointer. Wch Is Used to Point the Address Of Another Variable.
Delegate Are Two Types:
--> SingleCast Delegate
--> Multicast Delegate
When ever delegate Object refer to The addrss Of the Single method then it is Said to be singlevast Delegate.
When Ever delegate object Refer To multiple methods then it is said to be multicast Delegate
Pointer:
Pointer Is A Variable That Stores the Address Of Another Variable.
Interface:
InterFace contains undefined method..
OR
Its is a collection of members.. Without Any Defination..
Abstract Class:
Abstract Class Contains Defined And Undefined Methos
Or
It is A collection members.. With OR Without Any Any Defination