std::ostream_iterator<T,CharT,Traits>::operator++

From cppreference.com

ostream_iterator& operator++();
ostream_iterator& operator++( int );

Does nothing. These operator overloads are provided to satisfy the requirements of LegacyOutputIterator. They make it possible for the expressions *iter++=value and *++iter=value to be used to output (insert) a value into the underlying stream.

Parameters

(none)

Return value

*this