Latest C++ Aptitude Question SOLUTION: What are virtual functions?

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What are virtual functions?

Asked In C++ (10 years ago)

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Indira Roy  (8 years ago)

A virtual function is one which has the same name in the base and sub class with the same number of parameters and return type of parameters.
A *ptr;// A base class
A aobj;
B bobj;
ptr=&a;
ptr->display();// display() virtual method , this invokes base class method
ptr=&b;
ptr->display();// display() this invokes sub class method

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