ISLOWER(3) BSD Library Functions Manual ISLOWER(3)NAME
islower — lower-case character test
SYNOPSIS
#include <ctype.h>
int
islower(int c);;
DESCRIPTION
The islower() function tests for any lower-case letters. In the ASCII
character set, this includes the following characters:
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.
SEE ALSOctype(3), ascii(7)STANDARDS
The islower() function conforms to ANSI X3.159-1989 (“ANSI C89”).
BSD June 4, 1993 BSD