C-L-value-R-value

Expression	R-value	L-value
ch	yes	yes
&ch	yes	illegal
cp	yes	yes
&cp	yes	illegal
*cp	yes	yes
*c + 1	yes	illegal
*(c + 1)	yes	yes
++cp	yes	illegal
cp++	yes	illegal
*++cp	yes	yes
*cp++	yes	yes
++*cp	yes	illegal
(*cp)++	yes	illegal
++*++cp	yes	illegal
++*cp++	yes	illegal