Gobal Variable Value Persistence

Using Arduino Programming Questions
#1

I know this is elementary, but I’ve looked in my C programming books and can’t find the answer.
Global Variables declared with a value.
I assume that unlike function local variables, which are not retained and re-initialized between calls, global variables that have values updated inside a function retain that value the next time the function is called, that is, until the variable is assigned a new value.

Is that true?

Thanks,
John

#2

Yes.

#3

Thanks,

John

#4

Just to add some more info, you can add static in front of variables in functions and they will persist between calls whilst still retaining the function-only scope.

#5