Vector product in 2D

#include <iostream>
#define N 3
using namespace std;
int main()
{
int i;
int *u, *v, w;
u=new int [N+1];
for(int i=1; i<=N; i++)
{
    cin>>u[i];
}
cout << endl << "Vector u:" << endl;
for (i=1;i<=N;i++)
cout << u[i] << " ";
cout << endl;
v=new int [N+1];
for(int i=1; i<=N; i++)
{
    cin>>v[i];
}
cout << "Vector v:" << endl;
for (i=1;i<=N;i++)
cout << v[i] << " ";
cout << endl;
w=0;
for (i=1;i<=N;i++)
w += u[i]*v[i];
cout << "the product w=u.v is " << w << endl;
delete u,v;
}