Create an array of $5$ grades $($double$)$ in your main program

Add Option $7$ in your menu to allow the user to calculate a quiz grade average

Create a void function getGrades that accepts the array as a parameter. Note that arrays are passed by reference by default. The function will request each grade from the user and populate the array that was passed.

Create a void function displayGrades that will display each of the grades in the grade array

Create a function averageGrades that will return $($double$)$ the average of the grade array

Option $7$ will manage the grades. When the user selects this option, it will ask for the grades, show all the grades and show the user the average.

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