getopt function

["Dima Sorkin" <dima.sorkin@xxxxxxxxx>]

Hi.
1) A question on libc function:
int getopt(int argc, char * const argv[],
                 const char *optstring);
The fact that it declares "char * const argv[]" and not
"const char * const argv[]" means that it changes argv ?

2) Is libc containing POSIX functions shipped
with gcc, or it is a completely different project ?

Regards and thank you
Dima.