Question

In the code below, what do the first and second const mean?

I guess first or second means foo is constant; the other one means elements of foo are also constants. Is it true?

static const char * const foo[] = {"bar", "baz"};

Answer 1

It means its an array of const pointers (so you can’t change the pointers) to const chars (so you can’t change the chars via the pointers). This is a common way of defining fixed strings, such as command names, in an application.