STL

// Demonstrating input and output with iterators.#include <iostream>#include <iterator> // ostream_iterator and isstream_iteratorusing namespace std;int main(){    cout << "Enter two integer: ";    // create istream_iterator for reading int values from cin    istream_iterator< int > inputInt( cin );    int number1 = *inputInt; // read int from standard input    ++inputInt; // move iterator to next input value    int number2 = *inputInt;  // read int from standard input    // create ostream_iterator for writing int values to cout    ostream_iterator< int > outputInt( cout );    cout << "The sum is: ";    *outputInt = number1 + number2; // output result to cout    cout << endl;}