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  • What is an abstract function?

    An abstract function has no implementation and must be in an abstract class. It can only be declared. This forces the derived class to provide the implementation of it. An abstract member is implicitly virtual.24 déc. 2008

  • What is abstract class function?

    An abstract class is a class that is designed to be specifically used as a base class. An abstract class contains at least one pure virtual function. You declare a pure virtual function by using a pure specifier ( = 0 ) in the declaration of a virtual member function in the class declaration.

  • Why do we use abstract functions?

    In object oriented programming, abstraction is defined as hiding the unnecessary details (implementation) from the user and to focus on essential details (functionality). It increases the efficiency and thus reduces complexity.
  • A pure virtual function (or abstract function) in C++ is a virtual function for which we can have an implementation, But we must override that function in the derived class, otherwise, the derived class will also become an abstract class. A pure virtual function is declared by assigning 0 in the declaration.11 jui. 2023
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