Purpose: The purpose of this assignment is to allow you to gain some experience with using iterative do loops for summation and products as well as to force you to think about algorithms. Your goal: Write a Fortran program that uses an iterative do loop to evaluate the sum i=0N(Ci(2i)!x2i) where Ci={11ifiisoddifiiseven Your code should prompt the user to enter a real value for x>0 and an integer value for N. It should also output the value of the sum to STDOUT. You may assume that N will be greater than or equal to zero and will small enough, i.e. N