Determines whether a character is a lowercase alphabetic character.
Files
lib_ascii.h/lib_ascii.c
Prototypes
Arguments
ch
Character to examine.
Returned Value
DEF_YES,
if character is a lowercase alphabetic character;
DEF_NO,
if character is not a lowercase alphabetic character.
Required Configuration
None.
Notes / Warnings
ISO/IEC 9899:TC2, Section 7.4.1.7.(2) states that “islower() returns true only for the lowercase letters”.