// manipulation of vector elements
#include <iostream>
#include <vector>
using namespace std;

int main()
{

  float prod=0;
  vector<float> v1(10), v2(10);

  for(int i=0;i<10;i++)
  {

    v1[i] = 1.2*i;
    v2[i] = i+2.5;

    prod = prod + v1[i]*v2[i];

    cout << " v1(" << i << ") = " << v1[i]
         << "\tv2(" << i << ") = " << v2[i]
         << "\tv1(" << i << ")*v2(" << i << ") = "
         << v1[i]*v2[i] << endl;
  }

  cout << "The sum of the product of "
       << "v1 and v2 elements is " << prod << endl;

  return 0;

}