In C++ programming, suppose that you've implemented a class called FGH and that it has only one private member variable, a pointer x that points to an object of another class called JKL. It is not stated in particular here what problems FGH or JKL are intended to solve, nor the reason why FGH is storing the pointer x in a member variable. (To avoid biasing your answer to the questions below, I'm not specifying these things, because the questions ask you to explore various possibilities, focusing on why we would make certain design decisions instead of others.) Given these assumptions and no others, answer the following questions about them.
Under what circumstances would it be necessary to implement a destructor in the class FGH? Under what circumstances would it be fine to leave it out?
Suppose you felt that you needed to implement a destructor in FGH. Under what circumstances would it also be necessary to implement a copy constructor in the class FGH? Under what circumstances would it be fine to leave it out?
Suppose you felt that you needed to implement a destructor in FGH. Under what circumstances would it also be necessary to overload the assignment operator in the class FGH? Under what circumstances would it be fine not to overload it?