Lessons learned on virtual

                                            virtual usage

Child class doesn't need virtual keyword for virtual function, even if defined it's redundant

the parent class should contain same function signature as child class also contains the same function signature but parent class should declare it as virtual.

function signature same no of arguments , same sequence of types and same function name.

Object type will decide which function to call

When you are allocation object with new then only virtual destructor works, if you allocating object on stack then it will automatically destroy child obj first then parent obj.


http://www.vishalchovatiya.com/part-3-all-about-virtual-keyword-in-c-how-virtual-destructor-works/



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