int
isblank(
int c
)
)
function tests for the standard blank-space characters.
The standard blank-space characters are the following:
\t
In the
``C''
locale,
isblank()
returns true only for the standard blank-space characters.
)
function returns zero if the character tests false and
returns non-zero if the character tests true.
)
must be
EOF
or representable as an
otherwise, the behavior is undefined.
See the
CAVEATS
section of
ctype(3)
for more details.