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Also notice that you can create whatever methods in your derrived classes... like you could make Dog have a fetch method, it will still run through the MakeAnimalSpeak method just fine, but you cant make a MakeAnimalFetch method because the bird doesn't have a fetch method... you could make a MakeDogFetch method and have classes derrive from Dog... like Chow, Doberman...etc run through the method fine as long as you mark the Fetch method as virtual.
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Also notice that you can create whatever methods in your derrived classes... like you could make Dog have a fetch method, it will still run through the MakeAnimalSpeak method just fine, but you cant make a MakeAnimalFetch method because the bird doesn't have a fetch method... you could make a MakeDogFetch method and have classes derrive from Dog... like Chow, Doberman...etc run through the method fine as long as you mark the Fetch method as virtual.

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Hello Experts<br />
<br />
What is importace of Abstract Classes<br />
What are adventages to use abstract classes
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Hello Experts

What is importace of Abstract Classes
What are adventages to use abstract classes

What is importance of Abstract Classes

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).