LESSON 35: Passing Parameters and Variables by Reference in Arduino Functions

WE have learned in earlier lessons that is it poor programming practice to use global variables. In today's lesson we learn how to pass variables and parameters to and from arduino functions by using the pass by reference method.

[tbac]

Hello sir, Will you be making more videos?
You are missed by many

[glsek]

I wish I had a teacher like you when I was attending school. With your explenation everything looks so simple!

[cammy]

"BOOM!!"
me: *spills coffee*

[davidstonier-gibson]

I came across this while researching for training for a young friend in Nigeria. I like your very gently staged style. And I love that background music ;-)

[antrikshfulwani]

Wow, this series was good. I finished it in 3 days, and I don't wanna stop. Thank you for another amazing series!

[jamesmoon]

Last few lessons have made so much sense and made my programming 300% better

[elecdesignhub]

All the 36 YouTubes are built with lot of care and really useful for learning Arduino. Thanks Paul.

[bliksemdonder]

After a hiatus of more than 30 years from programming I started "playing" with Arduino projects. I remembered some of the C lessons, lectures and exercises from back then but things like state machines and pointers I needed refreshing. Your short and to the point lessons are very good for learning and refreshing. Thank you.

[joelennox]

This was very useful to me. I’ve watched the second Arduino series and the robotics but this clarifies the workings of variables in functions. Always good to plug in with you Paul.

[naboulsikhalid]

what a great explanation (passing by reference), first time explained, first time understood. Thank you

[davypeleman]

Thanks for the lessons on arduino, watched all. You explained it so well. Good luck with further projects.

[rickm]

Thanks Paul, I use your lesson's as a reference guide. Please keep the video's coming!

[erygion]

Thank you again for another great lesson Mr. Mcwhorter. I'm excited to be done with these and start your new arduino lessons. I appreciate the walkthrough. I'm going to join your patreon as soon as I can.

[AO_Cthulhu]

Thank you so much for your videos! I started learning arduino in my spare time and going through your first few lessons got the ball rolling. As I wanted to advance my programs I kept coming back to learn how to do so.

[robertherzog]

I have learned so much from your lessons, both if using the Arduino controller and in the programming language itself. In this lesson, it was all programming. I enhanced the program to use a separate function for ADD, SUBTRACT, MULTIPLY, DIVIDE and finding the SQUARE of the first number. I used REFERENCE to pass parameters back as well as the return command.

[brians]

Paul, your teaching style is great! I have been trying to learn arduino programming for a while. It is finally starting to click. Thanks to your tutorials.

[paparoysworkshop]

I've used the Arduino for several years now but one thing I am not good at is teaching it to others. So whenever someone asks me how to program the Arduino I first direct them to watch your videos. After they've watched most of this series, I then also encourage them to watch other channels such as Ralph S Bacon.

Your videos are fantastic and your teaching style works well with beginners. It's the best channel I've found to start learning with.

[ivandiazdeleon]

Keep them coming, you saved me. Great job, thanks a lot!

[seditiousmonkeyart]

Hello Paul. I have now watches several of your videos and really getting a lot from them. You explain things clearly and thoroughly. Definitely up with the best. You have helped me get my head around functions and getting cleaner code.
Thank you and keep up the great work.

[dannyjensen]

Really good example at the end on the pass by reference and that is what I was interested in. I just did a fast forward got what I needed. For some reason I could not find this in all my google searches. You really do a good job on the videos and they will last forever. Thanks for all your efforts. Thank BOOM was exactly what I wanted!