* getargs - this routine will generate a vector of
* pointers (arps) to the substrings in string "s".
* Each substring is separated by blanks and/or tabs.
* return - the number of subfields.
while (*s
== ' ' || *s
== '\t')
while (*s
!= '\0' && *s
!= ' '
&& *s
!= '\t' && *s
!= '\n')