What is pure virtual function in C++ programming ? #interviewquestions

YouTube Excerpt: A pure virtual function in c++ is a virtual function for which we do not have an implementation. We do not write any functionality in it. Instead, we only declare this function. A pure virtual function does not carry any definition related to its base class. A pure virtual function is declared by assigning a zero (0) in its declaration. Any class containing one or more pure virtual functions can not be used to define any object. For this reason, these classes are known as abstract classes. Classes derived from abstract classes need to implement the pure virtual functions of these classes.

A pure virtual function in c++ is a virtual function for which we do not have an implementation. We do not write any functionality in it. Instead,...

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