Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

 ◄Description► ◄Example►                     ◄Up► ◄Contents► ◄Index► ◄Back►
─────Run-Time Library───────────────────────────────────────────────────────
 
  Include:   <ctype.h>
 
  Syntax:    int __toascii( int c );
             int tolower( int c );
             int _tolower( int c );
             int toupper( int c );
             int _toupper( int c );
 
  Returns:   (__toascii)  the ASCII value of <c>.
             (tolower)    the lowercase equivalent of <c>.
             (_tolower)   the lowercase equivalent of <c>, only
                          if <c> is an uppercase letter.
             (toupper)    the uppercase equivalent of <c>.
             (_toupper)   the uppercase equivalent of <c>, only
                          if <c> is a lowercase letter.
 
  See also:  _strupr, _strlwr, \ais...
                                    -♦-