C++98: std::istream_iterator

The istream_iterator template class wraps a stream and returns an input iterator. Here is an example:

#include <iostream>
#include <iterator>

int main()
{
  int myInt;
  std::istream_iterator<int> myIstreamIterator(std::cin);

  myInt = *myIstreamIterator;
  std::cout << myInt << " "; // 1

  myIstreamIterator++;
  myInt = *myIstreamIterator;
  std::cout << myInt << " "; // 2

  myIstreamIterator++;
  myInt = *myIstreamIterator;
  std::cout << myInt << " "; // 3

  std::cout << std::endl;  
  return 0;
}
// Input : 1 2 3
// Output: 1 2 3

Reference: http://www.cplusplus.com/reference/iterator/istream_iterator/