The
isblank ();
function tests for a space or tab character.
For any locale, this includes the following standard characters:
"``\t'' `` ''"
In the "C" locale
isblank ();
successful test is limited to this characters only.
The value of the argument must be representable as an
Vt unsigned char
or the value of
EOF
RETURN VALUES
The
isblank ();
function returns zero if the character tests false and
returns non-zero if the character tests true.
COMPATIBILITY
The
BSD 4.4
extension of accepting arguments outside of the range of the
Vt unsigned char
type in locales with large character sets is considered obsolete
and may not be supported in future releases.
The
iswblank ();
function should be used instead.
