How much functionality is “acceptable” for a C++ struct?

Question

My first post so please go easy on me!

I know that there\'s no real difference between structs and classes in C++, but a lot of people including me use a struct or class

Answer 1

Consistency is most important. The point of conventions are to give a common point of reference for all those reading your code in the future.

Personally, I avoid structs if I feel I need the functionality of a class.
AKA: "plain old data" approach.

Look at your project and set a standard, or adhere to the one already there.

Though, I suggest you try to avoid inheritence, especially if all the struct is doing is holding POD. Nothing worse then tracing a bunch of super classes for an integer or char.