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

From reading through some STL source code which ships with Visual Studio, it appears that one criteria in use is are things "mostly public" (start with a struct) or "mostly private" (start with a class)?

In a similar vein, if what you write near the top (maybe because it's important) of your class is public, then go with struct. On the other hand, if you list member data first use class.