void Start()
{
Operation operation = default(Operation);
operation = OperationFactory.CreatOperate("+");
operation.NumberA = 1;
operation.NumberB = 2;
var res = operation.GetResult();
print("Result:" + res);
}
static void Main(string[] args)
{
// Ui 获取输入.
string _strFirstNum = Console.ReadLine();
string _strOperation = Console.ReadLine();
string _strSecondNum = Console.ReadLine();
string _strResult = "";
Operation oper;
oper = OperationFactory.createOperate(_strOperation);
oper.NumberA = Convert.ToDouble(_strFirstNum);
oper.NumberB = Convert.ToDouble(_strSecondNum);
double result = oper.GetResult();
Console.WriteLine("Reuslt is {0}", result);
}
