Question

I need help with the implementation of the UML of the Rectangle class

#operators
Bool==(Rectangle)
Bool >(Rectangle)
Ostream& operator<(ostream&, Rectangle)

Answer 1

UML-
you mean the unified modeling language labeling system to describe a class?

Answer 2

Yes. am having troubles with that @woodrow73

Answer 3

3 boxes, top box is the class name,
2nd box holds all field names, followed by a : with data types on the right side
3rd box holds the methods, with the parameters followed by a return type like so
------------------------------------
+Rectangle
------------
-length : int
-width : int
------------
+calcArea(leng : int, wid : int) : int
-------------------------------------
this uml diagram of a class called rectangle says that the class name is Rectangle, the fields are length & width, and they are both of the int data types-- and the method in this class is called calcArea, it accepts 2 int variables into the arguments. The parameter displays the variables, followed by the data type. If there are multiple parameters, they are separated by a comma. After the parenthesis, you specify the method's return type after another : like I did.

Finally, you can tell by the +/- signs, about which of the class/fields/methods are public/private.. + = public && - = private.

That is how I'm taught to write a UML, though there exist some variations on the design.. subtle differences I think.

Answer 4

Here I explain UML much more in depth; http://openstudy.com/study#/updates/546e3100e4b0ecc3214a19c3