import java.io.*;
import java.util.*;

//imports
public class CreateFinalGrade {

                 private Scanner input;
                 private Formatter output;
                 private GradeRecord[] records;
                 CreateFinalGrade(){

                 }
                 // This method opens an input file, whose name is given in the parameter, File.
                 // The method also initializes the instance variable: records, and its array
                 // length to hold all the records. The length, denoting the total number of
                 // records, is given in the first line of the input file.
                 public void openInputFile( String File ) {
                     input = new Scanner(File);

                     int arraylength = input.nextInt();
                     records = new GradeRecord[arraylength];
                 }

                 // The method closes the input file
                 public void closeInputFile() {
                     input.close();
                 }

                 // This method reads all records from the input file to an array of
                 // GradeRecord objects.
                 public void readRecords() {
                     //Scanner scanner = new Scanner(input);
                     //input.useDelimiter(" ");
                    for (int i=0 ; i<records.length;i++){
                	    records[i].setFirstName(input.next());
                	    records[i].setLastName(input.next());
                	    records[i].setExam1(input.nextInt());
                	    records[i].setExam2(input.nextInt());
                	    records[i].setExam3(input.nextInt());
                	    records[i].setExam4(input.nextInt());
                	    input.nextLine();
                    }
                 }

                 // This method processes each record to generate the values of emailID,
                 // average, and finalGrade.
                 public void processFinalGrade() {
                	 for(int i =0;i<records.length;i++){
                      	records[i].setAverage( (records[i].getExam1() + records[i].getExam2() +records[i].getExam3() + records[i].getExam4())/4);
                      	records[i]. genFinalGrade();
                	 }
                 }

                 // This method opens an output file for storing updated student records.
                 public void openOutputFile( String File ) throws IOException {
                	 output = new Formatter(new FileWriter(File));

                 }

                 // This method close the output file.
                 public void closeOutputFile() {
                     output.close();
                 }

                 // This method write all the updated records in the same order to
                 // the output file.
                 public void writeRecords() {
                	 for(int i = 0;i<records.length;i++)
                     output.format("%s\t%s\t%s\t%d\t%d\t%d\t%d\t%d\t%c\n",records[i].getFirstName(),records[i].getLastName(),records[i].getEmailID(),records[i].getExam1(),records[i].getExam2(),records[i].getExam3(),records[i].getExam4(),records[i].getAverage(),records[i].getFinalGrade());
                 }

                 // define any methods or constructors, if necessary.
             }