Function returning a pointer to an int array

Question

I am learning C++ from Primer 5th edition and I am at Returning a Pointer to an Array. The declaration of this function is:

 int (*func(int i))[10]; 
         


        

Answer 1

int(*)[10] is a pointer to an array of 10 ints. int* is a pointer to int. These are different types.

However, an array decays to a pointer to its first element, so you can do:

int a[10];
int(*p)[10] = &a;
int* q = a; // decay of int[10] to int*

But not:

q = p;
p = q;