Originally Posted by astroboom
While I can believe you have a function ntCallback, I don't know what type an 'i' is!
void i ntCallback(t_ipamax *x, int inletnumber)
It is far better (for you and for us as helpers) if you can isolate the the MaxMSP-isms from the pure c (e.g., from the code you've posted, we cannot tell if t_ipamax is a MaxMSP creature, or one of yours). Then you can cut-and-paste and show us something that we can understand and compile.
In your original post it seemed that you were having trouble understanding a basic 'c' issue: the use of arrays. Certainly learning about arrays can be handled using ANSI-C and not some hardware-specific version of it.