Answer / asif aslam

Abstract class start with the keyword abstract,we can't
create direct instantiate of the abstract class,an abstract
class may contain the pure virtual,abstract function.

Answer / shivanand arur

Abstract class is a class which can have both, abstract and non-abstract methods. Abstract methods are the one's which are just declared in the class but does not have any body inside it. The abstract classes are defined by a keyword "abstract". The class which inherits this abstract class, has to declare the method in it and has to give its function body...An abstract class cannot be instantiated and its methods are internally virtual.

Interfaces are always chosen over these abstract classes since interfaces provide multiple inheritance but once a class is inherited that class cannot inherit any other class.

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