CODEWITHSUNDEEP
oopc#-4.0inheritance
Dhinesh
Dhinesh

Reputation: 53

New Object Creating C#

Class A :- 

class classOne
{
    public int intOne = 0;
    public  int Sub()
    {
        return 1;
    }
    public virtual int  Add()
    {
        return 1;
    }
}

Class Two:-

class classTwo:classOne
{
    public new int Sub()
    {
        return 2;
    }
    public override int Add()
    {
        return 2;
    }

}

Class Three

class classThree : classTwo
{
    public int Sub()
    {
        return 3;
    }

}

Program.cs

classOne obj = new classOne();
classThree obj3 = new classThree();
obj = obj3;
Console.WriteLine(obj.Sub());

Output is 1.

My doubt is I initialized a obj with classOne .Then I assigned the same object with ClassThree using new keyword classThree obj3 = new classThree(); . How does it call classOne.sub() . How is this happening ? My understanding is, it supposed to call classThree.Sub() .

Upvotes: 0

Views: 57

Answers (1)

Sean
Sean

Reputation: 62542

You haven't made Sub virtual, so the compiler will use the static type of the variable to determine which instance to call. Since the static type of obj is classOne it will call classOne.Sub()

Upvotes: 1

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