It's incorrect to call a pointer an integral type. It doesn't behave like an integer (you can't add two pointers together). You can't even subtract two pointers from each other unless they point into the same array (or one element past) without causing undefined behaviour. You can't even reliably convert a pointer generally to an integer and back again unless it's a void *.

Edit: just remembered I wrote a rambling on this in 2014: https://ramblings.implicit.net/c/2014/04/21/pointers-are-not...