public Employee AddEmployee(string empname, string experience, string quali)
        {
            EmployeeManager m     = new EmployeeManager();                                                //Creating the employee manager
            double          gs    = m.CalculateGross(experience, quali);                                  //Calculating gross salary
            double          tax   = m.CalculateTax(gs);                                                   //Calculating tax on gross salary
            double          bs    = 0.4 * gs;                                                             //Basic salary
            double          pfund = 0.12 * bs;                                                            //Providend Fund salary
            double          ns    = gs - (pfund + tax);                                                   //Net salary
            Employee        e     = new Employee(Id, empname, experience, quali, gs, bs, pfund, tax, ns); //Creating an employee object to add to list

            //Checking for existing employee
            if (employees.Contains(e))
            {
                Id--;         //Deleting the Id alotted
                return(null); //returning null
            }
            else
            {
                employees.Add(e); //Adding the employee
                Id++;             //Incrementing the Id
                return(e);        //returning the employee object
            }
        }
        static void Main(string[] args)
        {
            EmployeeManager manager = new EmployeeManager(); //creating the oject of Employee Manager Class

            manager.AddEmployee("Ravi", "1.4", "Masters");
            manager.AddEmployee("Ram", "2.3", "Degree");
            manager.AddEmployee("Rachel", "1.0", "Masters");

            //ORIGINAL PROGRAM BEGINS
            int choice = Convert.ToInt32(Console.ReadLine());

            switch (choice)
            {
            case 1:
                //VIEW THE EMPLOYEES
                List <Employee> emp = manager.ViewEmployees();
                if (emp == null)
                {
                    Console.WriteLine("No employees present");
                }
                else
                {
                    foreach (var em in emp)
                    {
                        string[] experinece = em.experience.Split('.');       //Splitting years and month
                        int      year       = Convert.ToInt16(experinece[0]); //Extract Years
                        int      month      = Convert.ToInt16(experinece[1]); //Extract Months
                        Console.WriteLine($"{em.empId}: {em.Name}, experience:{year}y{month}m, gross = {em.grossalary}, " +
                                          $"net = {em.netsalary}");
                    }
                }
                break;

            //ADDING EMPLOYEES
            case 2:
                string   name  = Console.ReadLine();
                string   exp   = Console.ReadLine();
                string   quali = Console.ReadLine();
                Employee e     = null;
                if (quali == "Degree" || quali == "Masters")
                {
                    if (!exp.Contains('.'))
                    {
                        Console.WriteLine("Invalid format!");
                    }
                    if (e == null)
                    {
                        Console.WriteLine("Employee already exists");
                    }
                    else
                    {
                        Console.WriteLine($"Name: {e.Name} \n Id: {e.empId} \n Experience: {e.experience} \n Qualification: {e.qualification}" +
                                          $"\n BasicPay: {e.basicsalary} \n Gross Pay: {e.grossalary} \n PF: {e.Pf} \n Tax: {e.tax} \n Net pay: {e.netsalary}");
                    }
                }
                else
                {
                    Console.WriteLine("Invalid Qualification");
                }
                break;
            }
        }