Answer Posted / talha bilal

Pure Virtual Function

class Base //Abstract base class
{
public:
virtual void show() = 0; //Pure Virtual Function
};
class Derived:public Base
{
public:
void show()
{
cout << "Implementation of Virtual Function in Derived class";
}
};

int main()
{
Base obj; //Compile Time Error
Base *b;
Derived d;
b = &d;
b->show();
}

Virtual Function

class Base
{
public:
virtual void show()
{
cout << "Base class";
}
};
class Derived:public Base
{
private:
void show()
{
cout << "Derived Class";
}
};

int main()
{
Base *b; //Base class pointer
Derived d; //Derived class object
b = &d;
b->show(); //Late Binding Occurs
}

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