Josh Lospinoso, the author of this blog, has now corrected this to read "pointer to const int"

C declaration syntax confounds even the experts.

I highly recommend this article to all interested in C and C++, and programming languages generally.

"... const int* x_ptr_3 = &x; // (3) ... Finally, we see the preferred approach, which is taking a const pointer (3)"

Not a const pointer, but a pointer to const int.

Thank you for the correction!