You are to write a class named "DataSet". The data set is a rectangular data set with a

fixed number of rows and columns that is readin from some file.

The class has the following private member data:

string $m_{{?}_f\text{i}\text{l}\text{e}\text{n}\text{a}\text{m}\text{e}\text{;}}//$ name of file that contained the data

int m$\_$numRows; $//$ number

int $m_{-}$numCols; $//$ number of columns in the data

double$*m_{-}$dataArray; $//$ array the data is stored in

it also has the private functions:

double ComputeAverage$($double$*$ array, int length$)$; $//$ Average the array values

double FindMaxValue$($double$*$ array, int length$)$; $//$ Find max value in array

The class has the following public member functions:

void SetDataDimensions$($int rows, int cols$)$; $//$ sets the number of columns & rows

void ReadData$($string fileName$)$; $//$ Reads in the data file after seting # columns & rows

$//$ The data is stored in m$\_$dataArray by column

double FindAverageInColumn$($int index$)$; $//$ Averages column column #index of data array

double FindMaxValueInColumn$($int index$)$; $//$ Finds max value in column #index

For the last two functions, index can be from $0$ to $m_{?}$numCols$-1.$

Declare your class in a file named DataSet.h$.$ Define any class functions in DataSet.cpp$.$

Using the data set in the file testDataSet.txt$,$ which has $1000$ rows and $4$ columns. In

your program main, create a instance of your DataSet class. Then, use it to set the rows

and columns in the data set $($to $1000$ and $4),$ and the read in the data in the file provided,

named testDataSet.txt$.$ Compute the average of column index $1($that is the second

column$).$ Also, find the maximum value in column index $3($that is the fourth column$).$