C++ Questions, please help

TRUE/FALSE By passing a string argument to a function, we can often make that function more re-usable. TRUE/FALSE This is especially true for functions that control input-prompts make ideal candidates for string arguments. TRUE/FALSE As always, we like to pass strings by reference to avoid the nasty copying issues of value arguments. TRUE/FALSE But, since we aren't going to change the prompts, we typically make the argument a constant reference-fast from not copying and still protected from accidental change like a value argument! TRUE/FALSE Being constant reference (instead of plain reference), we can even provide default values for these arguments! (A common one for prompt is ""-the empty string.) Could a class have the following two methods in it and still compile/run fine? void f(void): void f(void) const: How would the compiler know which one to call?! Is the inline keyword needed to inline a class method? Why/Why not? Show how to rewrite the following method definition as a single line. (See the explanation in #18 about what a rational number is.) Rational Rational:: divide (const Rational & r) const { Rational t: t = r. reciprocal(): t = multiply(t): return t: } Other than those you chose above (#24), what methods might/should a complex class include? A) Complex add(const Complex & c) const: B) Complex add(double x) const: C) Complex reciprocal (void) const: D) Complex conjugate (void) const: E) double magnitude (void) const: Why is it that the mutator of a rational class is difference in that it works with both data members simultaneously whereas a Complex class has separate mutators for its two [numeric] data members? Don't we normally follow that latter tactic? What's up with the Rational class mutator