COHERENT manpages

This page displays the COHERENT manpage for islower() [Check if a character is a lower-case letter].

List of available manpages
Index

islower() -- ctype Function (libc)

Check if a character is a lower-case letter
#include <ctype.h>
int islower(c) int c;

islower() tests  whether the argument  c is a lower-case  letter (a-z).  It
returns a number  other than zero if c is  is a lower-case letter, and zero
if it is not.  islower() assumes that c is an ASCII character or EOF.

Example

For an example of how to use this macro, see the entry for ctype.h.

See Also

ASCII,
libc
ANSI Standard, §7.3.1.6
POSIX Standard, §8.1