public override double Calculate(Package package)
{
// calculations...
return 39.40;
}
public double Calculate(Package package)
{
return company.Calculate(package);
}
public abstract double Calculate(Package package);
static void Main(string[] args)
{
Package package = new Package()
{ From = 76712, To = 10012, Weight = "1kg"};
// the 3 strategies
UPS ups = new UPS();
USPS usps = new USPS();
Fedex fedex = new Fedex();
Shipping shipping = new Shipping();
shipping.SetStrategy(ups);
Console.WriteLine("UPS Strategy: " + shipping.Calculate(package));
shipping.SetStrategy(usps);
Console.WriteLine("USPS Strategy: " + shipping.Calculate(package));
shipping.SetStrategy(fedex);
Console.WriteLine("Fedex Strategy: " + shipping.Calculate(package));
}