Advanced Inheritence

Question 1

What is multiple inheritence in C++?

Answer 1

The ability to inherit from multiple classes simultaneously.

Question 2

What is the best practice for DTORs as it relates to multiple inheritence?

Answer 2

Have DTORs be virtual.

Question 3

How do you work around naming conflicts in multiple inheritence?

Answer 3

Specifing the namespace of the ambigious item.
Ex: namespace::item

Question 4

What is the “Dreaded Diamond”?

Answer 4

A multiple inheritence scenario where a Base class has two derived classes, and a fourth class inherits from both derived classes. Now there two seperate instances of the base class data members in the fourth class.

Question 5

What is the solution to the “Dreaded Diamond”?

Answer 5

Virtual Inheritence

Question 6

What is the cost of virtual inheritence?

Answer 6

Extra work for the compiler.