Name
isalnum function template — Determines whether a character is alphanumeric in a
locale
Synopsis
template <typename charT>
bool isalnum(charT c, const locale& loc);
The isalnum
function
determines whether the character c
is an alphanumeric character in the
locale loc
. It returns the
following:
use_facet<ctype<charT> >(loc).is(ctype_base::alnum, c)