import java.util.Scanner;
import java.io.*;
public class TestStudentRecord {

	public static void main(String[] args) throws IOException {
		
		File myFile = new File("records.txt");
		Scanner input = new Scanner(myFile);
		Scanner user_input = new Scanner(System.in);
		
		StudentRecord[] records = new StudentRecord[20];
		for (int i = 0; i < records.length; i++)
		{
		    records[i] = new StudentRecord(String.valueOf(input.nextInt()), input.nextInt(), input.nextDouble(), input.nextDouble(), input.nextDouble(), input.nextDouble());
		}
		input.close();
		int num;
		do
		{
			System.out.println(printMenu());
			num = user_input.nextInt();
		} while (num < 1 || num > 5);
		user_input.nextLine();
		switch (num)
		{
		    case 1: 
		    	for (StudentRecord student: records)
		    	{
		    		System.out.println(student.getStudentID());
		    	}
		    	break;
		    case 2:
		    	for (StudentRecord student: records)
		    	{
		    		System.out.println(student.getLetterGrade());
		    	}
		    	break;
		    case 3:
		    	for (StudentRecord student: records)
		    	{
		    		System.out.println((int)(student.getNumericGrade()*100) + "%");
		    	}
		    	break;
		    case 4:
		    	System.out.println("Enter a student ID: ");
		    	String user_id = user_input.nextLine();
		    	for (int i = 0; i < records.length; i++)
		    	{
		    		if (user_id.equals(records[i].getStudentID()))
		    		{
		    			System.out.println(records[i].toString());
		    		}
		    	}
		    	break;
		    default:
		    	System.out.println("Goodbye");
		    	System.exit(0);
		}
		

		

	}


    public static String printMenu()
    {
	    return "1 - Display all Ids\n"
			    + "2 - Display letter grade for all students\n"
			    + "3 - Display numeric average for all students\n"
			    + "4 - Search and display 1 student record\n"
			    + "5 - Exit";
    }
    
    
}