In only C++ please.

Repeat the former project that calculates mean and variance, except this time use arrays. Your program should: prompt the user for the number of values to take the mean and variance of allocate an array of doubles with the correct size to hold the values and loop to fill it make a mean function, and a variance function...both should take (1) an array of doubles and (2) the array size as arguments, and return the respective calculation recall that the mean and variance are defined as follows