Give reasonably brief, but complete answers to the following.

7. When a function has an object parameter that it doesn't modify, what is the best way to declare the parameter (in the function signature), and why? Show an example using a function with a string object parameter. -------------------------------------------------------------------- 8. (a) When should a member function be declared as a 'const' member function? (b) What are the advantages of defining a member function as 'const'? -------------------------------------------------------------------- 9. a) When a class has objects as data members, why should its constructors use initialization lists (member and initializer syntax) vs. assignment to the members in the body of the ctor? b) Name two cases where you *must* use initialization lists in constructors (as opposed to assignment in the ctor body).