public static void Main()
{
MemberHelper memberHelper = new MemberHelper();
memberHelper.AddMember("Maryam", "Airport", 033267888);
AuthorHelper authorHelper = new AuthorHelper();
authorHelper.AddAuthor("Mark Ryan");
BookHelper bookHelper = new BookHelper();
bookHelper.AddBook("Calculus", 3);
BookIssueHelper bookIssueHelper = new BookIssueHelper();
bookIssueHelper.AddBookIssue("23-12-2020", 2, 3);
}