Write C++ code to: (9 points)Create a function called "avgArray" that:

Accepts an integer array and its size as input.

Returns the average of the values in the array.

Create a main function that:

Defines a three-element integer array initialized with the point values of the three questions on this quiz (not counting extra credit).

Calls your avgArray function with that array.

Display the average

Extra Credit: Create a storeArray function that:

Accepts an integer array its size as input, and a string filename as input.

Fills the array with the values read from a file.

Make sure the code is not that advanced. I'm in highschool