UNIX 6th Ed. - /usr/source/iolib/nexch.c

   1: IEH3nxch ()
   2: /* returns next character which is not IEH3spce */
   3: {
   4:     char ch, cgetc();
   5:     extern int IEH3sfil;
   6: while ((ch = cgetc(IEH3sfil)) > 0 && IEH3spce(ch));
   7: if  (ch > 0)
   8:     return (ch);
   9: return (-1);
  10: }

Defined functions