Arrays are used to reference, calculate and display multiple variables by using a single name and one or more reference numbers. This makes writing, reading and modifying code much easier. In the calendar example, think of displaying the months of the year on the screen.
You could write:
Print “March”, etc.
Or you could put the array in a loop such as this:
For vMonth = 1 to 12
Now think of the same situation, but with a variable with hundreds of elements.