static void Main(string[] args)
{
// declaring an object
Rectangle r = new Rectangle();
// user inputs length of the rectangle
Console.Write("Enter length of the rectangle: ");
double lengthR = double.Parse(Console.ReadLine());
// user inputs width of the rectangle
Console.Write("Enter width of the rectangle: ");
double widthR = double.Parse(Console.ReadLine());
r.AcceptDetails(lengthR, widthR); // calling AcceptDetails() method
r.Display(); // calling Display() method
Console.Read(); // pausing program to read information
}