How should I order the members of a C++ class?

Question

Is it better to have all the private members, then all the protected ones, then all the public ones? Or the reverse? Or should there be multiple private, protected and pub

Answer 1

i think it's all about readability.

Some people like to group them in a fixed order, so that whenever you open a class declaration, you quickly know where to look for e.g. the public data members.

In general, I feel that the most important things should come first. For 99.6% of all classes, roughly, that means the public methods, and especially the constructor. Then comes public data members, if any (remember: encapsulation is a good idea), followed by any protected and/or private methods and data members.

This is stuff that might be covered by the coding standards of large projects, it can be a good idea to check.