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Answer Posted / rock
When a derived class object pointed to by a base class
pointer dynamically is deleted only the base class
destructor is invoked inorder to even invoke derived class
destructor we use virtual destructor.
class shape
{
virtual ~shape(){}
};
class circle:public shape
{
~circle(){}
};
void main()
{
shape *sh = new circle;
delete sh; //both the destructors are invoked
}
If virtual keyword is not added to the base class
destructor only the base class destructor is called.
| Is This Answer Correct ? | 3 Yes | 0 No |
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