using System;

namespace School_System { class Student { public Student() { get_studentdet(); } public void get_studentdet() {

    }

    
}
class Course
{
    internal int course;

    public Course()
    {
        get_courseName();
    }

    public void get_courseName()
    {
        Console.Write("What course do you want to register? ");
        Console.WriteLine("1. BBIT ");
        Console.WriteLine("2. BIF/ICS ");
        Console.WriteLine("3. BTC ");
        Console.Write('\n');
        course = Console.Read();

        switch (course)
        {
            case 1:
                Console.Write("Welcome to BBIT, you have to pay 180000");
                break;
            case 2:
                Console.Write("Welcome to BIF/ICS you have to pay 190000");
                break;
            case 3:
                Console.Write("Welcome to BTC you have to pay 180000");
                break;
        }

    }
}
class Finance : Course
{
    protected static double feesbbit = 180000;
    protected static double feesbif = 190000;
    protected static double feesbtc = 180000;
    public double bal, dep;

    public Finance()
    {
        pay();
        calculatefee();
        get_fees();
    }
    public void pay()
    {
        Console.Write(" Enter the amount you would like to pay  ");
        dep = Console.Read();
    }
    public void calculatefee()
    {
        if (course == 1)
        {
            bal = feesbbit - dep;
        }
        else if (course == 2)
        {
            bal = feesbif - dep;
        }
        else if (course == 3)
        {
            bal = feesbtc - dep;
        }
    }
    public void get_fees()
    {
        if (bal > 0)
        {
            pay();
        }
        else if (bal == 0)
        {
            Console.WriteLine("You have cleared your fees. good job!");
            Console.ReadKey();
        }
        else
        {

        }
    }

}
class Exam : Finance
{
    public Exam()
    {
        estatus();
    }
    public void estatus()
    {
        if (bal == 0)
        {
            Console.WriteLine("You have cleared your fees, you re legible for exams.");
            Console.ReadKey();
        }
        else
        {
            Console.WriteLine("Go pay your fees. You are not legible for exams!");
        }
    }
}
    
class Program
{
    static void Main(string[] args)
    {
        //variables for condition statements
        int x, choice;
        
        Console.WriteLine("How many students do you want to register?");
        x = Console.Read();
        Console.WriteLine(" Please register your students");

        string[] name = new string[x];
        int[] admino = new int[x];
        int[] year = new int[x];
        for (int i = 0; i < x; i++ )
        {
            //enter student details
            Console.WriteLine("Enter Student details");
            Console.Write("Enter Name: ");
            name[i] = Console.ReadLine();
            Console.WriteLine("Enter Admission Number: ");
            admino[i] = Console.Read();
            Console.WriteLine("Enter Academic year of student: ");
            year[i] = Console.Read();
            Console.Write('\n');

            Console.Read();
        }

        Console.Clear();
        Console.Write("Choose and option");
        Console.WriteLine("1. Register for your courses");
        Console.WriteLine("Check fee balance");
        Console.WriteLine("2. Pay Fees");
        Console.WriteLine("3. Find out if you are liable for exams");
        choice = Console.Read();

        switch (choice)
        {
            case 1:
                Course c = new Course();
                c.get_courseName();
                break;

            case 2:
                Finance f = new Finance();
                f.pay();
                break;
            case 3:
                Exam e = new Exam();
                e.estatus();
                break;
            case 4:
                Finance q = new Finance();
                q.get_fees();
                break;
        }


        Console.ReadKey();
    }
}

}