static void Main(string[] args) { Console.Write("Enter X:"); double entryX = double.Parse(Console.ReadLine()); Console.Write("Enter Y:"); double entryY = double.Parse(Console.ReadLine()); Console.Write("Enter Z:"); double entryZ = double.Parse(Console.ReadLine()); Console.Write("Enter X1:"); double entryX1 = double.Parse(Console.ReadLine()); Console.Write("Enter Y1:"); double entryZ1 = double.Parse(Console.ReadLine()); Console.Write("Enter Z1:"); double entryY1 = double.Parse(Console.ReadLine()); var a = new Point3D(entryX, entryY, entryZ); var b = new Point3D(entryX1, entryY1, entryZ1); Console.WriteLine($"{DistanceCalculator.DistanceBetweenPoint3D(a, b):F8}"); }