How to define an object witch has parameters and functions?

How to define an object witch has parameters and functions?

[per isakson]

See Create a Simple Class and you will find:

Here is the definition of BasicClass:

classdef BasicClass
   properties
      Value
   end
   methods
      function r = roundOff(obj)
         r = round([obj.Value],2);
      end
      function r = multiplyBy(obj,n)
         r = [obj.Value] * n;
      end
   end
end