HP 3000 Manuals

HP C/iX Library Reference Manual

islower 

Tests whether an argument is a lowercase letter.

Syntax 

     #include <ctype.h>
     int islower (int c);

Parameters 

c             An argument to be evaluated.  The argument must be
              representable as an unsigned char or the macro EOF.

Return Values 

!=0           The argument passed in c is a lowercase letter.

0             The argument passed in c is not a lowercase letter.

Description 

The islower function returns a nonzero value if the argument passed in c 
is a lowercase letter (ASCII characters a through z); otherwise, the
returned value is zero.

See Also 

isalnum, isalpha, iscntrl, isdigit, isgraph, isprint, ispunct, isspace,
isupper, isxdigit, ANSI C 4.3.1.6, POSIX.1 8.1

MPE/iX 5.0 Documentation