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Abstract Classes

Abstract Classes

Question:
Can I instantiate an abstract class?

Answer:
No, you cannot instantiate an abstract class. However, you can declare a pointer or a reference to it:

class Abs{public:  virtual void Perform() = 0; //pure virtual};class Derived: public Abs{public:void Perform() {/*..*/}}void func(Abs& derived); //reference to abstractint main(){  Abs * p = new Derived; //pointer to abstract   func(*p);}

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