static void Main(string[] args) { Type boxType = typeof(Box); FieldInfo[] fields = boxType.GetFields(BindingFlags.NonPublic | BindingFlags.Instance); Console.WriteLine(fields.Count()); var length = double.Parse(Console.ReadLine()); var width = double.Parse(Console.ReadLine()); var height = double.Parse(Console.ReadLine()); var box = new Box(length, width, height); var result = new StringBuilder(); result.AppendLine($"Surface Area - {box.CalculateSurface():F2}"); result.AppendLine($"Lateral Surface Area - {box.CalculateLateralSurface():F2}"); result.AppendLine($"Volume - {box.CalculateVolume():F2}"); Console.Write(result); }