In C is there (or should there be) a limit to the number of levels of nested conditionals and/or loops? Like if you have an if-else (or switch-case) that calls another function based on the condition, and inside that function is another conditional branch that calls another function, and so on. Is there an arbitrary limit to this kind of nesting? Is there a better way in C to do a menu / sub-menu / sub-menu / sub-menu system without nesting function calls within function calls? I have several books on C, C++, and game programming, but none really cover topics like this. And I am speaking in terms of platform-independence, not using the Win32 API.

The maximum number of nested scopes (loops, if statements etc) is probably set by your compiler. If you hit this limit you need to seriously reconsider your design.

The maximum number of successive function calls is limited by the stack. You are quite unlikely to hit this limit unless you are using very deep recursion. You would need to write ALOT of functions for a series of non recursive calls to overflow the stack. (Yes you could overflow the stack in a few calls if you put some enormous data structure on it, but that's just a bad idea all around)