I have limited experience with C but I'm trying to debug a problem with a motor encoder subroutine that works fine when I execute it by itself, but is not working within a larger program... my questions is in the use of SUB versus VOID for creating a subroutine.. and if I'm using this incorrectly (I have been using the SUB statement)

sub subname()
{
// sub statements (return statement not required)
}

void subname()
{
// statements
}

Do both of the above do the same thing?.. in particular I'm wondering if both are true subroutines or if the VOID simply copies the code 'in-line' each time the void reference appears in the main program. Can I use the 'sub' keyword to create a subroutine, or is this non-standard use of the sub keyword (in C tutorials I see on-line none use the sub keyword, so maybe I am using this incorrectly)


Should both be able to work fine for subroutine use.?

dave

No. You should not use "sub" statement.

I'm suprised that you were able to find it. It's an undocumented legacy from a very early version of ROBOTC. I've just added a warning message to the compiler when it is used. IT should behave exactly as a "void" function.

The preferred (and 'C' compliant) method is to use a function definition with return type "void".