Variables

We use the term variable in the same sense as in mathematics and other programming languages.
That is, it means a named element that stores a value and can be changed.

Variables can be created in several ways.

• Some blocks, such as count with and for each item, use a variable and define its value.
  Such variables are traditionally called loop variables.
• Custom functions also use variables to define parameters or arguments.
• You can create a variable at any time with the set block, and any variable created this way is declared as a global variable.
• The block coding environment in RobomationLAB does not support local variables.

Clicking the dropdown on a variable block shows the following options.

• The names of all existing variables defined in the program are listed.
• "Rename Variable": renames that variable throughout the program. Choosing this option opens a window where you can enter the new name.
• "Delete Variable": deletes every block in the program that refers to this variable.

Set

The set block assigns a value to a variable.
If the variable has not been declared in the code, it declares the new variable and then assigns the value.

Python

item = VAL

Change

The change block adds a number to the value of a variable.

Python

item = item + 1

Get

The block below provides the value stored in a variable, but does not change that value.
It is possible to use this block without a set block, but that is not good programming practice.

Python

item