Question $15$

$2$ pts

What does the following function do$?$

int func$($char $*$str$)$

$\{$

int $c=0$;

while $($ str $!=\text{'}\frac{\frac{?}{?}}{0}\text{'})$

$\{$

c$++$;

str$++$;

$\}$

return c;

$\}$

A$.$ It accepts a pointer to a $C-$string as an argument and returns the number of times $\text{'}\frac{\frac{?}{?}}{0}\text{'}$ appears in the string.

B$.$ It accepts a pointer to a C$-$string as an argument and returns a pointer to the null terminator.

C$.$ It accepts a pointer to a C$-$string as an argument and returns the number of characters in the string, not including the null terminator.

D$.$ It accepts a pointer to a C$-$string as an argument and returns the number of characters in the string, including the null terminator.