public static void Main()
{
Type boxType = typeof(Box);
FieldInfo[] fields = boxType.GetFields(BindingFlags.NonPublic | BindingFlags.Instance);
Console.WriteLine(fields.Count());
double inputLength = double.Parse(Console.ReadLine());
double inputWidth = double.Parse(Console.ReadLine());
double inputHeight = double.Parse(Console.ReadLine());
Box box = new Box(inputLength, inputWidth, inputHeight);
Console.WriteLine($"Surface Area - {box.CalcSurfaceArea():F2}");
Console.WriteLine($"Lateral Surface Area - {box.CalcLaterialSurfaceArea():F2}");
Console.WriteLine($"Volume - {box.CalcVolume():F2}");
}