static void Main(string[] args)
{
Console.Title = "计算器";
try
{
double numberA = 0;
double numberB = 0;
var opStr = string.Empty;
Operation op = null;
double result = 0;
Console.Write("请输入第一个操作数:");
numberA = double.Parse(Console.ReadLine());
Console.Write("请输入第二个操作数:");
numberB = double.Parse(Console.ReadLine());
Console.Write("请输入运算符(+,/):");
opStr = Console.ReadLine();
op = OperationFactory.CreateOpertion(opStr);
op.NumberA = numberA;
op.NumberB = numberB;
result = op.GetResult();
Console.WriteLine("\n");
Console.WriteLine("******************");
Console.WriteLine("运算结果为:" + result);
Console.WriteLine("******************");
}
catch (Exception ex)
{
Console.WriteLine($"发生错误,原因:{ex.Message}");
}
Console.ReadKey();
}
