1. Consider asimple singly-linked listthat implements anordered listof integers in a class called IList.

1. Give appropriatedeclarationsfor the data members of the class.

1. Write aniterativeclass member function list_sum() that returns thesumof the values in such a list.

1. Write the necessary parts of arecursiveimplementation of the function in part (b).

1. How would either of the public member functions in parts (b) and (c) becalledin a client program?