Answer Posted / pankajkolte

Virtual Destructor is used basically to ensure proper the
sequence of call to destructor.

class Employee {
virtual ~Employee() {}
};

class Manager : public Employee {
~Manager() {}
}

Employee * m = new Manager();//here was the mistake
delete m; // <-

In this case base class destructor if marked as virtual so
as derived class destructor will get called first then base
class destructor.

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