Test Average and Grade Write a program that asks the user to enter five test scores. The program should display a
letter grade for each score and the average test score. Write the following methods in the
program:

calcAverage:
This method should accept five test scores as arguments and return the
average of the scores.

determineGrade:
This method should accept a test score as an argument and return a
letter grade for the score, based on the following grading scale:

Score Letter Grade
90-100 A
80-89 B
70-79 C
60-69 D
Below 60 F

What is the worst-case complexity of the maxrepeats function? assume that the longest string in the names array is at most 25 characters wide (i.e., string comparison can be treated as o( class namecounter { private: int* counts; int nc; string* names; int nn; public: namecounter (int ncounts, int nnames); int maxrepeats() const; }; int namecounter: : maxrepeats () { int maxcount = 0; for (int i = 0; i < nc; ++i) { int count = 1; for (int j = i+1; j < nc; ++j) { if (names[i] == names[j]) ++count; } maxcount = max(count, maxcount); } return maxcount; }