#include <iostream>
#include <sstream>
#include <algorithm>
#include <iterator>

int main()
{
    std::string str = "To be or not to be...", str2;
    std::istringstream ist(str);
    for (int i = 0; i < 2; i++)
    {
        std::copy(std::istream_iterator<char>(ist),
                  std::istream_iterator<char>(),
                  std::back_inserter(str2) );
        ist.str(str);
    }
    std::cout << str2;
    return 0;
}