std::ostreambuf_iterator<CharT,Traits>::operator++

From cppreference.com

ostreambuf_iterator& operator++();
ostreambuf_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