public member type
std::num_get::iter_type
<locale>
typedef InputIterator iter_type;
Iterator type
This is a member alias of the second template parameter of
num_get (referred as
InputIterator in this reference).
It is the
iterator type of the input iterators pointing to the beginning, end and final elements in the character sequence.
Notice that
InputIterator defaults to the
istreambuf_iterator type for the first template parameter
charT.