@Ry- Mistake or intention -- in any case it is (like most code involving pointers to arrays) rather unidiomatic and unnecessarily complicated.
int *pint = s[i]; would be more common: s[i] is an array of 2 ints which decays to a pointer to the first element (which is a single int) when used in a context other than the operand of sizeof or &. Sure, &s, s and *s all have the same numerical value and it is with arguably all implementations known to mankind safe to arbitrarily cast between these types. But that doesn't mean one should, or that it is conformant.