More on pointers/arrays: Function Arguments

[jbf at ccieng5.UUCP]

>    char *index (s, c)
>	char s [], c;
>    {
>	while (*s != '\0' && *s != c)
>	    ++s;				/* AARGH!! */
>	return (*s == c ? s : NULL);
>    }
>
>This passes through Berkeley CC and LINT unscathed, and compiles.
>Yet K&R Appendix A Section 14.3 Sentence 2 (sound biblical?) says
>"...arrays are not lvalues" and Section 7.2 clearly states
>autoincrement as "++ lvalue".  Hmmm ...

The argument s is actually a string pointer rather than an array.  In
K&R's reference manual Section 10.1 "External Function Definition", it
states in the penultimate sentence of the last paragraph that
"declarations of formal parameters declared 'array of' are adjusted to
read 'pointer to..' ".

Azhrarn
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