"round" problems
 

each time I try round(something);
it says "call of function without prototype"
how can I activate the function?

Re: "round" problems
 

what ever are you talking about?

Re: "round" problems
 

I'm talking about the round(x) function
it converts floats to integers

Re: "round" problems
 

If it's in the math library, you have to include the header file for it. I don't remember what the library's name actually is right now, but you'll have something like this:
near the top of the file where you're trying to call the function from.

EDIT: Looking it up, it's math.h, so you'll have:
Hope that helps :)

Re: "round" problems
 

I already tried it, and it doesn't help. could you try it wit your code and check if it is a unique problem of mine, or maybe it is just included in a different file?