static void Main(string[] args)
{
// доставка по EMS
var emsStrategy = new EMSStrategy();
// доставка по USP
var upsStrategy = new UPSStrategy();
// доставка по FeDex
var fedexStrategy = new FEDEXStrategy();
var shippingCostCalculator = new ShippingCostCalculator();
// расчет для EMS
shippingCostCalculator.Strategy = emsStrategy;
var result = shippingCostCalculator.Calculate(new Order());
// расчет для USP
shippingCostCalculator.Strategy = upsStrategy;
result = shippingCostCalculator.Calculate(new Order());
// расчет для FeDex
shippingCostCalculator.Strategy = fedexStrategy;
result = shippingCostCalculator.Calculate(new Order());
}
