$44.$ T F Static member variables cannot be accessed by nonstatic member functions$\mathrm{.}45.$ T F Static member variables are defined outside their class declaration$\mathrm{.}46.$ T F A static member function may refer to nonstatic member variables of thesame class, but only after an instance of the class has been defined$\mathrm{.}47.$ T F When a function is declared a

friend

by a class, it becomes a member ofthat class$\mathrm{.}48.$ T F A

friend

function has access to the private members of the class declaringit a

friend

$\mathrm{.}49.$ T F An entire class may be declared a

friend

of another class$\mathrm{.}50.$ T F In order for a function or class to become a friend of another class, it mustbe declared as such by the class granting it access$\mathrm{.}51.$ T F If a class has a pointer as a member, it$$s a good idea to also have a copyconstructor.