If any member function is defined to be virtual, the destructor should also be defined to be virtual. 2-If an assignment operator is defined in the base class, then an assignment operator must be defined in the derived class. 3-The copy constructor for the derived class automatcally calls the default constructor of the base class before it runs.

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OOPs

In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career. 

Constructor

The easiest way to think of a constructor in object-oriented programming (OOP) languages is: