Write a MATLAB program to read in numbers from a file one at a time until a negative even number is read in or there are no numbers left to be read. Calculate the average of the numbers that were read in, not including the negative even number. The program will display this average along with the number of numbers used to determine it. Remember to account for the case where the first number read in is a negative even number. Use the three input files provided on Blackboard to test your program.