public static void Main(string[] args)
{
SectionManager sectionManager = new SectionManager();
Console.WriteLine("Choose Section to Run:");
sectionManager.DisplaySectionNames();
UserInput userInput = new UserInput();
IProblem problem = sectionManager.GetProblem(userInput.intUserInput());
if (problem != null)
{
problem.Begin();
}
Console.WriteLine("Main Program Done.");
}