SStream reading, reseting

// Example program
#include <iostream>
#include <string>
#include <sstream>

using namespace std;
    int first, second;
    string input;

int main()
{
  stringstream sstream;

    cout << "First integer: ";
    getline(cin, input);
    sstream.str(input);
    sstream >> first;     // state of sstream may be eof

    cout << "Second integer: ";
    getline(cin, input);
    sstream.str(input);
    sstream.clear();      // clear eof state
    sstream >> second;    // input from sstream
}