how can i change varable in class automatically

i defined two classes:

class A has an attribute x

class B has an attribute y

for example:

ma=A(3);

mb=B(ma);

so now as defined above, ma.x=3, mb.y.x=3.

the question is, if i want to change ma.x to 6. like use code :ma.x=3. how can i let the mb.y.x change automatically to 6 too?

Answer 1

[Prabhanjan Mentla]

Hi,

Here's the sample code of classA and classB. The main point here is change in the variable of one class reflected in both the classes.

classdef classA < matlab.mixin.Copyable
   properties
      x=0; 
   end
   methods
    function a = classA(x)
      a.x = x;
    end
   end
end

classdef classB < classA
   properties
      y=0;
   end
   methods
       function b = classB(x,y)
           b@classA(x);
           b.y = y;
        end
   end
end

>> a = classA(7);
>> b = classB(a,8)

b = 

  classB with properties:

    y: 8
    x: [1×1 classA]

>> b.x

ans = 

  classA with properties:

    x: 7

>> a.x=9

a = 

  classA with properties:

    x: 9

>> b.x

ans = 

  classA with properties:

    x: 9

You can try similar concepts to get work done and I would recommend you to check Object-Oriented Programming course get started with the Object-Oriented Concepts on MATLAB.

Hope this helps.