//策略模式
//数据和处理数据方法的解耦
//使数据处理方法更灵活的扩展和应用
static void Main(string[] args)
{
Console.WriteLine(MethodBase.GetCurrentMethod().DeclaringType.Namespace);
Record record = new Record(4, 6);
record.Algorithm = new Add();
record.Calc();
record.Algorithm = new Substract();
record.Calc();
record.Algorithm = new Multipy();
record.Calc();
record.Algorithm = new Divide();
record.Calc();
Console.ReadKey();
}
