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Why do we use virtual functions?
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Answer / uma sankar pradhan
we use virtual functions to achive dynamic binding
Dynamic binding is establishing relation between the
function call and function definition at run time
| Is This Answer Correct ? | 22 Yes | 2 No |
Answer / bijal
The virtual function can be allowed in base classes only.
The functions markd Virtual will only be overridable in
derieved classes.
If i m having a function in base class that shud come in
derieved class but i want it to have different behaviour.
This can only be acheived only if base class function is
virtual function.
| Is This Answer Correct ? | 23 Yes | 8 No |
A pure virtual member function is a member function that the
base class forces derived classes to
provide. Normally these member functions have no
implementation. Pure virtual functions are
equated to zero.
class Shape { public: virtual void draw() = 0; };
| Is This Answer Correct ? | 8 Yes | 4 No |
Answer / mona kawale
when there are two same classes in derived and base class then at the tym of running programm compiler get confuse about which function should b call first so it call derived class function automatically....but if we wrote base class function as virtual function then compiler will not get confuse.....
| Is This Answer Correct ? | 2 Yes | 0 No |
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STL 
