include <vector>
  using namespace std;
  
  int main(int argc, char** argv)
  {
    vector<int> intVector(10, 0);
    // other code...
    intVector.assign(5, 100);
  
    vector<int> vectorOne(10, 0);
    vector<int> vectorTwo(5, 100);
  
    vectorOne.swap(vectorTwo);
    // vectorOne now has 5 elements with the value 100.
    // vectorTwo now has 10 elements with the value 0
  
    return (0);
  }