import java.io.*;
public class GradeApp
{
	//Define variables for numbers of labs, quizzes, and exams.
	final static int NUMLABS = 13;
	final static int NUMREPORT = 2;
	final static int NUMQUIZZES = 10; // Use the 10 highest scores
	final static int NUMEXAMS = 4;
	
	public static void main(String[] args) throws IOException
	{
	// DEFINE VARIABLES
	// Define variables for student name and ID number.
	String inputName = "";
	int inputNum = 0;
	
	// Define variable for course number.
	String courseNum;
	String courseName; 
	
	// Define variables to use in summing.
	int sumAssign = 0;
	int sumAttend = 0;
	int sumReport = 0;
	int sumQuiz = 0;
	int sumExam = 0;
	
	// Define variable for final exam grade. Provided by user.
	int finalExam = 0;
	
	// Define variable for grade read in from fiel and cast to int
	int grade = 0;
	
	// Define variable for semester course grade.
	double semesterGrade = 0.0;
	
	// Instantiate input object to read from keyboard
	BufferedReader in = new BufferedReader(new InputStreamReader
	                                           (System.in));
	                                           
    // Instantiate file object to read lab assignment grades from file.
    BufferedReader labAssignFile = new BufferedReader
                  (new FileReader("labassign.txt"));
                  
    // Instantiate file object to read lab attendance grades from file.
    BufferedReader labAttendFile = new BufferedReader
                  (new FileReader("labattend.txt"));

    // Instantiate file object to read report/experiment grades from file.
    BufferedReader reportFile = new BufferedReader
                  (new FileReader("report.txt"));

    // Instantiate file object to read quiz grades from file.
    BufferedReader quizFile = new BufferedReader
                  (new FileReader("quiz.txt"));
                  
    // Instantiate file object to read exam grades from file.
    BufferedReader examFile = new BufferedReader
                  (new FileReader("exam.txt"));


    System.out.println("Please input the student's name: ");
    inputName = in.readLine();
    System.out.println("Please input the student's ID: ");
    inputNum = Integer.parseInt(in.readLine());
    System.out.println("Please input the course's name: ");
    courseName = in.readLine();
    System.out.println("Please input the course's number: ");
    courseNum = in.readLine();
    
    // Instantiate course object
    Course csCourse = new Course (courseNum, courseName);
                                    
    //START ADDING GRADES
    //Compute lab assignment sum.
    for (int i = 1; i <= NUMLABS; i++)
      {
         grade = Integer.parseInt(labAssignFile.readLine());
         sumAssign += grade;         
      }
	
	//Compute lab attendance sum.
	//Number of days attendance is numlabs * 2 + 2.
	for (int i = 1; i <= NUMLABS * 2 + 2 ; i++)
      {
         grade = Integer.parseInt(labAttendFile.readLine());
         sumAttend += grade;
      }
	
	//Compute report sum
	for (int i = 1; i <= NUMREPORT; i++)
      {
         grade = Integer.parseInt(reportFile.readLine());
         sumReport += grade;
      }
	
	//Add highest 10 quiz grades
	for (int i = 1; i <= NUMQUIZZES; i++)
      {
         grade = Integer.parseInt(quizFile.readLine());
         sumQuiz += grade;
      }
      
    //Add exam grades
    for (int i = 1; i <= NUMEXAMS; i++)
      {
         grade = Integer.parseInt(examFile.readLine());
         sumExam += grade;
      }
	
	//Now add an estimated final exam grade into the formula.
	//Prompt the user to enter a final exam grade.
	System.out.println("Please enter an estimated final exam grade " +
	                   "for this student: " );
	finalExam = Integer.parseInt(in.readLine());
	
	//Now compute semester grade for student.
	semesterGrade = csCourse.computeGrade(sumAssign, sumAttend,
	                                   sumReport, sumQuiz, sumExam, finalExam);
	                                   
	System.out.println("For course "+ csCourse.toString() +
	                   "\nThe grade for student " + inputName +
	                   " (ID:" + inputNum + ") " +
	                   "is: " + semesterGrade);
	}
}