How to convert vector to array

Question

How do I convert a std::vector to a double array[]?

Answer 1

You can do some what like this

vector  id;
vector  v;

if(id.size() > 0)
{
    for(int i = 0; i < id.size(); i++)
    {
        for(int j = 0; j < id.size(); j++)
        {
            double x = v[i][j];
            cout << x << endl;
        }
    }
}