CPP Class Practice Questions

You have an object of class Car. If Car contains a virtual destructor, what is its functionality?

• AA. It is never called
• BB. It cleans up resources
• CC. It prevents slicing
• DD. It allocates memory

In a class hierarchy, why is using a const reference preferable for function parameters?

• AA. It restricts access
• BB. It improves performance
• CC. It requires copies
• DD. It allows modification

If you overload the + operator for a class, what must it return?

• AA. bool
• BB. Class object
• CC. int
• DD. void

What happens if you neglect to declare your class methods as virtual in the base class?

• AA. They can't be invoked
• BB. They can't be accessed
• CC. They can't be inherited
• DD. They won't be overridden