Use of Nested Functions

Nested functions allow the child functions to access their parent functions’ variables as long as they are declared in the parent function. Let us see the same through the following example.

Example 2:

Output:

In the above function, we declare a variable num and then calculate and display its square within a child function. See the output below.

Workspaces in MATLAB are the scopes of a particular code entity such as a function. In general, data cannot be shared between two workspaces or, one can say that a data variable created in one workspace cannot be accessed by some other workspace, without additional support. In this article, we shall discuss this very additional support or ways in which data can be shared by different workspaces. For implementation purposes, this article uses functions to represent different workspaces. However, different scripts or live scripts also are types of different workspaces. 

Let us now understand the ways to share data/variables among workspaces in MATLAB.