What is an IS-A relationship?

Ou want a method with behavior similar to a virtual method--it is meant to be overridden --expect that it does not have a method body. It just has a method signature. What kind of method should you use?

Which code creates a new object from the Employee class?

Which type of constructor cannot have a return type?

When is a constructor executed?

F a local class is defined in a function, what is true for an object of that class?

Why would you implement composition using an id instead of a reference?

Which two blocks are used to handle and check errors?