Let's start building our final project. We'll use a template in the sample programs to start our project. Click on File, Open sample program, curriculum examples in double click barcode challenge template. This is what it will look like. You might have to change the motor and sensor setup to match your robot. Let me explain the array you see between the motor setup and the main program.

The arrays data type is char because we use characters, the arrays name is letters, and it has 27 elements 26 letters and underscore save this project under a new name because the template file is read only. Let's take a better look at that later array. arrays store data like we would address mail. Your street name would be the same as the array name, and the index would be your house number. Then the data we store in that index space is the person living in the house.