Страницы справочника OS X

Эта страница руководства является частью версии 5.0 Инструментов XCode

Читать страницы руководства

ISLOWER(3)               BSD Library Functions Manual               ISLOWER(3)

NAME
     islower -- lower-case character test

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <ctype.h>

     int
     islower(int c);

DESCRIPTION
     The islower() function tests for any lower-case letters.  The value of the argument must be repre-sentable representable
     sentable as an unsigned char or the value of EOF.

     In the ASCII character set, this includes the following characters (with their numeric values shown in
     octal):

     141 ``a''     142 ``b''     143 ``c''     144 ``d''     145 ``e''
     146 ``f''     147 ``g''     150 ``h''     151 ``i''     152 ``j''
     153 ``k''     154 ``l''     155 ``m''     156 ``n''     157 ``o''
     160 ``p''     161 ``q''     162 ``r''     163 ``s''     164 ``t''
     165 ``u''     166 ``v''     167 ``w''     170 ``x''     171 ``y''
     172 ``z''

RETURN VALUES
     The islower() function returns zero if the character tests false and returns non-zero if the character
     tests true.

COMPATIBILITY
     The 4.4BSD extension of accepting arguments outside of the range of the unsigned char type in locales
     with large character sets is considered obsolete and may not be supported in future releases.  The
     iswlower() function should be used instead.

SEE ALSO
     ctype(3), isalnum_l(3), iswlower(3), tolower(3), ascii(7)

STANDARDS
     The islower() function conforms to ISO/IEC 9899:1990 (``ISO C90'').

BSD                              July 17, 2005                             BSD