In large programs, it can be helpful to have a function specifically for printing out an error message to the user or to a log when an exception (an error) has occurred. Generally speaking, errors are tracked through unique error codes, making it easy for the programmer to implement. Assume you are given the task to implement a function for Mac users to print error messages based on some integer error code being passed into the function. Your manager wants you to implement a basic function for now to check the functionality. Implement a function called displayError , with no return value , that prints the integer error code passed to the function in the format specified. Below are two examples calling the function: displayError(-99)

'Exception thrown from error code -99.

>> displayError(-1)

'Exception thrown from error code -1.

>> Correct the bug in the function header!

% begin writing your function below function outArg = displayError(errorCode)

At their core, cell arrays are vectors of "cells" - universal containers that can hold numbers, strings, vectors, matrices... even other cells. Cell arrays use the "curly braces" {} to index individual cells, and parentheses () to index elements within each cell. To practice this, write a function cell_idx() that indexes a random cell array input for the following: 1. The third element of the second element in the array. For example: the number 4 in {'dog', [1 2 4 8 16], 14.567}; 2.The first element in the 4th element in the array. For example: the string 'cat' in {'foo', 'bar', [12 16; 32 -7], {'cat', 'rabbit', 'bat', 'dog'}} 3. The third cell in the array. For example: {'hey'} in {[2 1 -6 0], -81.23, 'hey', 'foobar'}

These three elements should be returned by your function in the same order. You can assume that the input mycell is always valid.

function [first, second, third] = cell_idx(mycell) first = ? second = ? third = ? end