public SuperCalc CreateCalc(string strCalcType)
{
SuperCalc InnerCalc = null;
switch (strCalcType)
{
case "+":
InnerCalc = new AddCalc();
break;
case "-":
InnerCalc = new MinusCalc();
break;
case "*":
InnerCalc = new MultiCalc();
break;
case "/":
InnerCalc = new DiviCalc();
break;
default:
break;
}
return(InnerCalc);
}
static void Main(string[] args)
{
Factory myCalcFac = new Factory();
SuperCalc myCalc = myCalcFac.CreateCalc("+");
double result = myCalc.AcceptInput(5.0, 9.0);
Console.WriteLine("5.0 + 9.0 = {0}", result);
Console.ReadKey();
}