Give examples for pointers within pointers?

Answer 1

If you mean pointers referring pointers then here you are:

int main (int argc, char **argv)

{

printf ("argv (pointer) is %p\n", argv);

printf ("*argv (pointer) is %p "%s"\n", *argv, *argv);

printf ("**argv (char) is %c\n", **argv);

return 0;

}