Pure Virtual Function in C++

[Hetal Patel]

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What is a Pure Virtual Function in C++?

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A class is made abstract by declaring at least one of its functions as a pure virtual function.

We cannot create objects of abstract classes. A pure virtual function or abstract function in C++ is a virtual function for which we don’t have an implementation, we only declare it.

A virtual function with no function body and assigned with a value zero is called a pure virtual function.

Pure virtual functions must be implemented by derived classes before the class can be instantiated.

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