Option 3: Write a program (grade.cpp) that will read in grades, the number of which is also input by the user. The program will find the sum of those grades and pass it, along with the number of grades, to a function which has a pass by reference parameter that will contain the numeric average of those grades as processed by the function. The main function will then determine the letter grade of that average based on a 10-point scale. (Should create a void type function with 3 parameters, totalSum, numOfGrades, avgGrade, and NO cout statements in the function.)

Coded in C++

90100 A

8089 B

7079 C

6069 D