HOW MANY INSTANCES OF THE VIRTUAL BASE CLASS WILL BE CRAETED IN THE BOTTOM CLASS.
a is BASE CLASS class a
b and c are DERIVED CLASSES class b and class c
d is DERIVED DERIVED CLASS class d
class b: public a
class c:public a
class d: public b ,public c
So How many Instances of class a are present in class d. Is there any way to change the number of Instances