Write a program that reads students’ names followed by their test scores. The program should output each student’s name followed by the test scores and the relevant grade. It should also find and print the highest test score and the name of the students having the highest test score. Student data should be stored in a struct variable of type studentType, which has four components: studentFName and studentLName of type string, testScore of type int (testScore is between 0 and 100), and grade of type char. Suppose that the class has 20 students. Use an array of 20 components of type studentType. Your program must contain at least the following functions: a: A function to read the students’ data into the array. b: A function to assign the relevant grade to each student. c: A function to find the highest test score. d: A function to print the names of the students having the highest test score. Your program must output each student’s name in this form: last name followed by a comma, followed by a space, followed by the first name; the name must be left justified. Moreover, other than declaring the variables and opening the input and output files, the function main should only be a collection of function calls. Functions.cpp #include  #include  #include  #include    using namespace std; // declare studentType struct // part a inline void getData(ifstream& inFile, studentType sList[], int listSize) {     // function code } // part b inline void calculateGrade(studentType sList[], int listSize) {     // function code } // part c inline int highestScore(const studentType sList[], int listSize) {     // function code } // part d inline void printResult(ofstream& outFile, const studentType sList[], int listSize) {     // function code }   ________________________________________________________________________________ Students Duckey Donald 85 Goof Goofy 89 Brave Balto 93 Snow Smitn 93 Alice Wonderful 89 Samina Akthar 85 Simba Green 95 Donald Egger 90 Brown Deer 86 Johny Jackson 95 Greg Gupta 75 Samuel Happy 80 Danny Arora 80 Sleepy June 70 Amy Cheng 83 Shelly Malik 95 Chelsea Tomek 95 Angela Clodfelter 95 Allison Nields 95 Lance Norman 88   ________________________________________________________________________________ What I have,won't work, and isn't connecting properly to functions.cpp #include  #include  #include  #include  #include  using namespace std; struct studentType  {     string studentFName[20];     string studentLName[20];     string studentData[20][3];     int testscore[20][5];     char grade[20]; }; studentType s; int main()  {     int index;     int maxindex;     int maxindex1;     int coldex;     int coldex1;     int totalscore[20];     double avscore[20];     double highscore;     double highindivscore;     maxindex = 0;     maxindex1 = 0;     coldex1 = 0;     ifstream infile;     infile.open("test.txt");         for(index = 0; index < 20; index++)     {         infile >> s.studentFName[index] >> s.studentLName[index] >> s.testscore[index][0] >> s.testscore[index][1] >> s.testscore[index][2] >> s.testscore[index][3] >> s.testscore[index][4];         totalscore[index] = ((s.testscore[index][0]) + (s.testscore[index][1]) + (s.testscore[index][2]) + (s.testscore[index][3]) + (s.testscore[index][4]));         avscore[index] = (static_cast(totalscore[index])/5);         if(avscore[index]<= 100)         {             s.grade[index] = 'A';         }         if(avscore[index]<= 89.9)         {             s.grade[index] = 'B';         }         if(avscore[index]<= 79.9)         {             s.grade[index] = 'C';         }         if(avscore[index] <= 69.9)         {             s.grade[index] = 'D';         }         if(avscore[index] <= 59.9)         {             s.grade[index] = 'F';         }     }     for (index = 0; index < 20; index++)     {         cout << s.studentLName[index] << "," << " " << s.studentFName[index] << " " << s.testscore[index][0] << " " << s.testscore[index][1] << " " << s.testscore[index][2] << " " << s.testscore[index][3] << " " << s.testscore[index][4] << " " << s.grade[index] << endl;     }     cout << endl;     for (index = 1; index < 20; index++)         for (coldex = 0; coldex < 5; coldex++)         {             if (s.testscore[maxindex1][coldex1] < s.testscore[index][coldex])             {                 maxindex1 = index;                 coldex1 = coldex;             }         }     highindivscore = s.testscore[maxindex1][coldex1];     for (index = 1; index < 20; index++)     {         if (avscore[maxindex] < avscore[index])         {             maxindex = index;         }     }     highscore = avscore[maxindex];     cout << s.studentFName[maxindex] << " " << s.studentLName[maxindex] << " Achieved The Highest Average Test Score Of A: " <