[sgtnoodle]

Are those not equivalent expressions in modern C?

I imagine there are more optimal and less optimal ways of actually doing the indexing in machine code and the former may be better semantics, but I would think a compiler would generate identical machine code for both.

[tinus_hn]

I’m pretty sure you have to take the size of the objects in mind.

[throwaway525142]

No, these are equivalent.

The size of the objects is implicitly taken into account by the compiler, it knows the size of the objects by the type of the pointer.

[amelius]

"Pointer arithmetic" takes care of that. Adding an integer to a pointer will multiply the size of the type pointed to by the integer and adds that to the pointer.