The C23 edition of Modern C

Important reminder just in the Preface :-)

Takeaway #1: "C and C++ are different: don’t mix them, and don’t mix them up"

Specially relevant to all those folks that insist on "Coding C with a C++ compiler", instead of safer language constructs, and standard library alternatives provided by C++ during the last decades.

Perfectly valid to do if you need to interface with a large C code base and you just want to do some simple OO here and there. Especially if you cannot have runtime exceptions and the like.

This is how I managed to sneak C++ into an embedded C codebase. We even created some templates for data structures that supported static allocation at compile time.

What would be an example of "simple OO here and there" that cannot be done cleanly in plain C?

You can do anything in C that you want to. Of course one can make v-tables and all of that, and even do inheritance.

But having the "class" keyword is nice. Having built in support for member functions is nice.

Sometimes a person just wants the simplicity of C++ 2003.

(In reality I was working on a project where our compiler only supported C++ 2003 and we had a UI library written in C++ 2003 and honestly pure C UI libraries kind of suck compared to just sprinkling in a bit of C++ sugar.)

    > You can do anything in C that you want to.

How about destructors?