static void Main(string[] args)
{
Student student = new Student();
Grade grade = new Grade();
Department department = new Department();
Console.WriteLine("Enter First Name: ");
string firstName = Console.ReadLine();
Console.WriteLine("Enter Middle Name: ");
string middleName = Console.ReadLine();
Console.WriteLine("Enter Last Name: ");
string lastName = Console.ReadLine();
string fullName = student.GetFullName(firstName, middleName, lastName);
string reverseName = student.GetReverseName(firstName, middleName, lastName);
Console.WriteLine("Your full name is: " + fullName);
Console.WriteLine("Your reverse name is: " + reverseName);
Console.WriteLine("Enter your Marks: ");
int marks = Convert.ToInt32(Console.ReadLine());
string gradeName = grade.GetGrade(marks);
Console.WriteLine("Your Grade is: " + gradeName);
Console.WriteLine("Enter your Department Name: ");
string deptName = Console.ReadLine();
Console.WriteLine("Enter your Department Teacher: ");
string deptTeacher = Console.ReadLine();
department.DepartmentName = deptName;
department.TeachersName = deptTeacher;
Console.WriteLine("Your Department Name is: " + deptName);
Console.WriteLine("Your Department Teacher is: " + deptTeacher);
}