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Using p->a would only let you access public variables of A. Since a is a protected variable, you should use cout << a, since a is inherited in class B.

I think you could use cout << p->a by friending class B.

Or by using a pointer to B instead of a pointer to A, as Jon noted.

Using p->a would only let you access public variables of A. Since a is a protected variable, you should use cout << a, since a is inherited in class B.

I think you could use cout << p->a by friending class B.

Or by using a pointer to B instead of a pointer to A, as Jon noted.

Using p->a is using the public version of the variable. If you wanted to use the protected version, you should use cout << a, since a is inherited in class B.

I think you could use cout << p->a by friending class B.

Or by using a pointer to B instead of a pointer to A, as Jon noted.

Using p->a would only let you access public variables of A. Since a is a protected variable, you should use cout << a, since a is inherited in class B.

I think you could use cout << p->a by friending class B.

Or by using a pointer to B instead of a pointer to A, as Jon noted.

Using p->a is using the public version of the variable. If you wanted to use the protected version, you should use cout << a, since a is inherited in class B.

I think you could use cout << p->a by friending class B.

Using p->a is using the public version of the variable. If you wanted to use the protected version, you should use cout << a, since a is inherited in class B.

I think you could use cout << p->a by friending class B.

Or by using a pointer to B instead of a pointer to A, as Jon noted.