A three level Class Hierarchy example with systax?

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A three level Class Hierarchy example with systax?
Question Posted on 18 Feb 2021

Home >> DotNet >> C# >> A three level Class Hierarchy example with systax?

A three level Class Hierarchy example with systax?
Below is the example of three level Class Hierarchy example where we have 3 class as define below and some dervied class

public class A
{

}
public class B: A
{

}
public class C: B
{

}

Notes:-
(1)Here in above example A is a base class for B and B is base class for C.
(2)Derived class always have something more than a base class so base is smaller than the derived class.
(3)Below Facts
A objA1=new A(); (Correct)
A objA2=new B(); (Correct)
A objA3=new C(); (Correct)
B objA4=new C(); (Correct)
B objA5=new A(); (Incorrect)
(4)As in above class initialization a base class can hold a derived class but a derived class cannot hold a base class.

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