Hello there! First time poster. I am playing around with creating functions in ROBOTC and have a couple of questions I was hoping the community could help answer. I didn't want to overload this one post though since each question is a little different, so I'm going to break it up into a few posts

I'm a bit confused how to navigate the difference between global and local variables in ROBOTC. Am I able to execute a function which uses global variables when I call the function? For example:



Or instead do I have to define a local variable within the function to pass along?



What would happen if I did the 2nd example, but declared the variable name "forwards" within the moveforwards function instead of "forwards_temp"? Would I get a compile error because there are two different variables, one global and one local, being declared with the same name? Or would ROBOTC just take the move recent declaration/assignment as the final one?

Thanks for the help!

Hey there,

In your first example you return the value of a variable that is already global in its nature, which is not really necessary.

You *can* have multiple variables with differing scopes (global vs local), but that may lead to bad programming habits, which you should avoid. The standard best practice for variables is: make their scope as limited as possible. That means that if a variables does not need to be global, then make it local. Resort to globals only when you have to.

Also, this is perfectly OK to do:

Thanks for the info/advice! This helps a lot.