### Question 11.24

Why can't I perform arithmetic on a `void *` pointer?

The compiler doesn't know the size of the pointed-to objects. Before performing arithmetic, convert the pointer either to `char *` or to the pointer type you're trying to manipulate (but see also question 4.5).

References: ANSI Sec. 3.1.2.5, Sec. 3.3.6
ISO Sec. 6.1.2.5, Sec. 6.3.6
H&S Sec. 7.6.2 p. 204

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