Variables

Variables are like boxes. They have labels and hold values.

Create a variable by 'defining' it. We need to specify what kinds of values can go into it.

Set its value.

We can only set a variable to a value that it allows.

We can also update variables. Here, it gets incremented by one.

Now, imagine we have two variables. (type name = value; is shorthand).

The variable c should be the sum of a and b.

Let's first try just setting c to a.

Then, we also add + and b to get the correct value.