Does *p++ increment p, or what it points to?
Unary operators like *, ++, and -- all associate (group) from right to left. Therefore, *p++ increments p (and returns the value pointed to by p before the increment). To increment the value pointed to by p, use (*p)++ (or perhaps ++*p, if the order of the side effect doesn't matter).
References:
K&R1 Sec. 5.1 p. 91
K&R2 Sec. 5.1 p. 95
ANSI Sec. 3.3.2, Sec. 3.3.3
ISO Sec. 6.3.2, Sec. 6.3.3
H&S Sec. 7.4.4 pp. 192-3, Sec. 7.5 p. 193, Secs. 7.5.7,7.5.8 pp. 199-200
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