static void Main(string[] args)
{
Console.Write("Please input the first number: ");
string firstNumber = Console.ReadLine();
Console.Write("Please input the operator: ");
string opt = Console.ReadLine();
Console.Write("Please input the second number: ");
string secondNumber = Console.ReadLine();
try
{
Operation oper = OperationFactory.CreateOperation(opt);
oper.NumA = Convert.ToDouble(firstNumber);
oper.NumB = Convert.ToDouble(secondNumber);
double result = oper.GetResult();
// result = Operation.GetResult(Convert.ToDouble(firstNumber), Convert.ToDouble(secondNumber), opt);
// switch (opt)
// {
// case "+":
// result = Convert.ToDouble(firstNumber) + Convert.ToDouble(secondNumber);
// break;
// case "-":
// result = Convert.ToDouble(firstNumber) - Convert.ToDouble(secondNumber);
// break;
// case "*":
// result = Convert.ToDouble(firstNumber) * Convert.ToDouble(secondNumber);
// break;
// case "/":
// result = Convert.ToDouble(firstNumber) / Convert.ToDouble(secondNumber);
// break;
// default:
// Console.WriteLine("Unsupported operator.");
// return;
// }
Console.WriteLine(String.Format("The result is {0:F}", result));
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
static void Main(string[] args)
{
try
{
Console.WriteLine("请输入第一个数");
double numA = Convert.ToDouble(Console.ReadLine());
Console.WriteLine("请输入操作符");
string operate = Console.ReadLine();
Console.WriteLine("请输入第二个数");
double numB = Convert.ToDouble(Console.ReadLine());
Operation oper = OperationFactory.CreateOperate(operate);
oper.NumberA = numA;
oper.NumberB = numB;
Console.WriteLine(oper.GetResult());
Console.ReadKey();
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
Console.ReadKey();
}
}