in C what is the meaning of this declaration: int *(*table())[30];

Question

int *(*table())[30];

I cannot find a solution anywhere. What is the *table(), can it be a function or array?

Can you please tell me what that means?

Answer 1

You can decode this from the inside out:

int *(*table())[30];

The innermost binding istable(), which is a function with unspecified arguments. The next level is *table(), so table is returning a pointer to something. The next level is (*table())[30], so it's returning a pointer to a 30-length array of something. The next level is *(table())[30], so it's returning a pointer to a 30-length array of pointers to something. The final level adds the type specifier, int *(*table())[30].

So table is a function (with unspecified arguments) that returns a pointer to a 30-length array of pointers to int.