C++ Vectors: Count Holes Function Needed
readImage: Creates a two-dimensional vector (a matrix) of 1's and 0's based on the input files that you send it.
printImage: Takes the matrix created in readImage and prints it out.
countHoles: You must come up with a way to iterate through the matrix that you have been dealing with in the past two functions and identify where and what type of holes are in the data. Internal holes (i) are made up of three 0's and one 1; External holes (e) are made up of three 1's and one 0. All other combinations are meaningless and should not be taken into account. Then, with the number of external and internal holes that you determined, use the formula provided ((#e - #i) / 4) to determine how many holes are in the matrix as a whole.