What does “const class” mean?

Question

After some find and replace refactoring I ended up with this gem:

const class A
{
};

What does \"const class\" mean? It seems to compile ok

Answer 1

The const is meaningless in that example, and your compiler should give you an error, but if you use it to declare variables of that class between the closing } and the ;, then that defines those instances as const, e.g.:

const class A
{
public:
    int x, y;
}  anInstance = {3, 4};

// The above is equivalent to:
const A anInstance = {3, 4};