Istream iterator

Question

Refer code below :

Istream iterator has input argument as cin... whats advantage of using istream iterator compared to cin alone as cin>>a?
https://code.sololearn.com/cRfVfAhjMqFK/?ref=app

Answer 1

https://code.sololearn.com/c0o4A8ZCWPMp/?ref=app

Some other intersting used cases are mentioned on cppreference :

https://en.cppreference.com/w/cpp/iterator/istream_iterator