Employee.cs

using System;

namespace Theory_9
{
    class Employee
    {
        static void Main(string[] args)
        {
            int empId = 10;
            string empName = "Patrick";
            char? role = null;
            Console.WriteLine("Employee ID: " + empId);
            Console.WriteLine("Employee name: " + empName);
            if (role.HasValue == true)
            {
                Console.WriteLine("Role: " + role);
            }
            else
            {
                Console.WriteLine("Role: null");
            }
        }
    }
}