Right. That's why, when you have an array of structs, say each 8 bytes in size, and a pointer ptr to the start of it, each time you do: ptr++; it increments

Right. That's why, when you have an array of structs, say each 8 bytes in size, and a pointer ptr to the start of it, each time you do: ptr++; it increments the address stored in ptr, not by 1, but by 8 (bytes) - so as to now point to the next struct in the array. Same if you do: ptr--; except in that case it decrements the address by 8. And if you did: ptr += 2; it would increment the address in ptr to point to 16 bytes further ahead in memory than it was earlier, for the same reason. ptr will now point to the struct which is two items further ahead in the array. So you can access that struct with the expression: *ptr