My task is to write a function that calculates the nth Fibonacci number by making a call to 'nniadd', a program I have previously written. nniadd preforms the addition of two nonnegative integers where the integers and their sum are given in row vector form (12345 = [1 2 3 4 5]). nniadd also have definitions in the program that are as follows:
x = a nonnegative integer in row vector form
y = a nonnegative integer in row vector form
x_plus_y = the sum of x and y in row vector form
I am pretty sure the goal of this assignment is to replace the addition in the fibonacci definition with the program 'nniadd' however I am not sure how to do so. Here is what I have so far, please help me with what to do next.