Your company performs a full backup on Mondays and an incremental backup on all other days. You need to restore the data to the state it was in on Thursday. How many backups will you need to restore?

The relationship between function templates and function-template specializations is most similar to the relationship between:

a. Classes and objects. b. Classes and functions. c. Functions and return types. d. Headers and source files.

Why is it an error to add a const modifier, as shown to the declaration for the member function input given here?

``` class BankAccount { public: void input( ) const; // other members }; ```