Need a little help with how to break out of the box

[amateurrobotguy]

I want to do some automation. I put Automation(); in the user routines fast.c under the 'insert auto in here'. Does this need to be Automation(void);?

I put Automation(); in the userroutines.h. Does this need to be automation(void);?

What would be an example of why the void is used? I know it is something like if the function returns output but do I need to expressly say this function has run?

I put my my automation function in user_routines.c defining it as void automation(void) {

Please tell me if all that I said is o.k.

Now how do I make it so that I can put Automation in its own .c file? Will it need its own .h? Do I have to define the .c file in ht userroutines.h? How will it know to use automation.h? to get to automation.c? to get to automation().

Now, how do I test this auto code without being in a match? Do I just move the call to automation from urf.c to ur.c?