Now that you know about the different simple data types that Swift supports, let's look at how to store them, so you can do operations on them later.

You can use constants or variables. Both are containers that have a name and can store values, but a constant's value can only be set once and can't be changed once it's set.

You must declare constants and variables before you use them. Constants are declared with the let keyword and variables with the var keyword.

You may have noticed that the names for constants and variables start with a lowercase letter, and if there is more than one word in the name, every subsequent word starts with a capital letter. This is known as camel case. You don't have to do this, but this is encouraged, as most experienced Swift programmers adhere to this convention.

Now, let's explore...