Programming Language: C++

1 - Add the following function to the class Student and use it inside main():

char letterGrade() const: returns the mean of the grades saved in an array of grades like letters A,B,C,D, or F using the usual ranges (88.5 to 100 for A, 79.5 to 89.5 for B, etc. For example, if grades have (0,0,0,100,100) returns F as a mean of 40.

2 - Add the following external function and use it inside main:

double getMaxOverallGrade(StudentA[], int size): given an array of objets Student of size (size) returns the max grade between all students. For example, if the array consists of two students and the first has the grades (10, 20, 3, 4, 5,) and the second (10, 30, 40, 95, 90), the function will return 95.