Chapter $9$ defined the struct studentType to implement the basic properties of a student. Define the class studentType with the same components as the struct studentType, and add member functions to manipulate the data members. $($Note that the data members of the class studentType must be private.$)$

Write a program to illustrate how to use the class studentType.

The studentType struct needs to have $6$ data members in total. All fields except courseGrade should be set by passing a parameter into the set function. The course grade should reflect their performance in the two categories testScore and programmingScore. Anytime setGrade$()$ is called, it should be set to the average of these two scores. Do not pass in a parameter when calling setGrade.

Struct studentType:

struct studentType

$\{$

string firstName;

string lastName;

char courseGrade;

int testScore;

int programmingScore;

double GPA;

$\}$;

Implement the following member functions

firstName: setFirstName$($string val$)$ : getFirstName$()$

lastName: setLastName$($string val$)$ : getLastName$()$

courseGrade: setGrade$()$ : getGrade$()$

testScore: setTestScore$($int val$)$ : getTestScore$()$

programmingScore: setProgScore$($int val$)$ : getProgScore$()$

GPA: setGPA$($double val$)$ : getGPA$()$

An example of the program is shown below:

Name: Sara Spilner

Grade: A

Test score: $89$

Programming score: $92$

GPA: $3\mathrm{.}57$

$***************$