#include <iostream>
#include <cstdlib>
using namespace std;
class student 
{
public:
   void inputScores(); // Prompts user to enter 2 quiz, a mid term, and a final score; store 
   // them in corresponding data members.
   void computeGrade(); // Compute average and then convert the average to letter grade
   void displayRecord(); // Displays the name; two quiz, midterm, and final scores; letter grade 
   // of a student in a single row, e.g., John 95 85 90 90 90 A
private:
   string name;
   int quiz1; // 0 - 10
   int quiz2; // 0 - 10
   int midterm; // 0 - 100
   int final; // 0 – 100
   float average;
   char grade; // letter grade: A, B, C, D, or F
   int num;
   int i;
};

const int SIZE = 10;
student s[SIZE];

int main()
{
   int test;
   student stats;

   stats.inputScores();
   stats.computeGrade();
   stats.displayRecord();
   cin >> test;
   return 0;
};
void student::displayRecord()
{
   cout <<"\n\n\nQuiz1 Quiz2 Midterm Final Average Grade Name" << endl;
   cout <<"_____ _____ _______ _____ _______ _____ ____" << endl;

   for ( i = 0; i < num; i++)
   {
      cout << s[i].quiz1  << " " << s[i].quiz2  <<" " << s[i].midterm  <<" "; 
      cout << s[i].final << " " << s[i].average << " " << s[i].grade << " ";
      cout << s[i].name << endl;
   }
}


void student::computeGrade()
{
   float quizaverage, midtermaverage, finalaverage;

   for ( i = 0; i < num; i++)
   { 
      quizaverage = ((s[i].quiz1 + s[i].quiz2) / 2) * .25; 
      midtermaverage = s[i].midterm * .25;
      finalaverage = s[i].final * .5;
      s[i].average = quizaverage + midtermaverage + finalaverage; 

      if (s[i].average  >= 90 && s[i].average  <= 100)
         s[i].grade  = 'A';
      else if (s[i].average  >= 80 && s[i].average  <= 89) 
         s[i].grade  = 'B';
      else if (s[i].average  >= 70 && s[i].average  <= 79) 
         s[i].grade = 'C';
      else if (s[i].average  >= 60 && s[i].average  <= 69) 
         s[i].grade  = 'D';
      else
         s[i].grade  = 'F';
}
}
void student::inputScores()
{
   cout << "Enter the number of students whose grades you wish to compute: ";
   cin >> num;
   for (i = 0; i < num; i++)
   {
      cout <<"\nEnter the students name: ";
      cin >> s[i].name;
      cout << "\nEnter the first quiz grade: ";
      cin >> s[i].quiz1;
      cout << "\nEnter the second quiz grade: ";
      cin >> s[i].quiz2;
      cout << "\nEnter your midterm grade: ";
      cin >> s[i].midterm;
      cout << "\nEnter your final test grade: ";
      cin >> s[i].final;
   } 
}