Call stack Questions

Question

How can I determinate the size of a Function Stack?
When I have a lot of code and I organize and wrap those codes into small functions and maybe re-use them. But is it posible that I could crash the application if a don't consideer how many functions is the function in execution have? The only way that my application crashed by that reason is using recursive function that is not very well design.
I hope that somebody could answe...
Thanks...