Is it possible in C# to inherit a subclass from a subclass?

Question

I'm studying OOP at the moment, and I've got this thesis. Because I know that inheriting a subclass from a superclass be like: class superClass : subClass{ } but I'm curious if this is an acceptable form: class superClass : subClass1 : subclass2 .

In a nutshell, I want to inherit a subclass from another one. Because what if I get into a problem like there is a subclass and it is inherited from a superclass because they have common data. Thats fine right?

But here is the catch: What if I need another subclass, which has common data with both of the first subclass and the super or main class?

Answer 1

You've got it backward. Subclasses derive from superclasses, by definition.

class SubClass : Superclass
{
}

Or

class Dog: Animal
{
}

If you want to derive from a subclass that is derived from a superclass, you just need to derive from the subclass:

class SubClass : Superclass
{
}

class SubClass2 : Subclass
{
}

Or

class Dog: Animal
{
}

class Terrier: Dog
{
}

By declaring that a Terrier is a type of Dog, you are also declaring it is a type of Animal, and will have access to all of Animal's methods and properties.