Back to notes -- Keyboard shortcut: 'u'              Slide program -- Keyboard shortcut: 't'    The while loop in the context of a full C++ program.Lecture 3 - slide 18 : 36
Program 1
#include <iostream>
#include <string>

using namespace std;

int main(){
  int i;
  while (cin >> i)   // convert istream to bool or int
     cout << i*2 << " " << endl;
  cout << "DONE";
}