private static void Main(string[] args)
{
Console.Write("请输入数字A: ");
string strNumberA = Console.ReadLine();
Console.Write("请选择运算符号(+ - * /): ");
string strOperate = Console.ReadLine();
Console.Write("请输入数字B: ");
string strNumberB = Console.ReadLine();
IOperationFactory factory = null;
switch (strOperate)
{
case "+":
factory = new AddFactory();
break;
case "-":
factory = new SubFactory();
break;
case "*":
factory = new MulFactory();
break;
case "/":
factory = new DivFactory();
break;
}
Operation operation = null;
if (factory != null)
{
operation = factory.CreateOperation();
}
operation.NumberA = Convert.ToDouble(strNumberA);
operation.NumberB = Convert.ToDouble(strNumberB);
Console.WriteLine("结果为: " + operation.GetResult());
Console.ReadLine();
}
private static void Main(string[] args)
{
Console.Write("请输入数字A: ");
string strNumberA = Console.ReadLine();
Console.Write("请选择运算符号(+ - * /): ");
string strOperate = Console.ReadLine();
Console.Write("请输入数字B: ");
string strNumberB = Console.ReadLine();
IOperationFactory factory = null;
switch (strOperate)
{
case "+":
factory = new AddFactory();
break;
case "-":
factory = new SubFactory();
break;
case "*":
factory = new MulFactory();
break;
case "/":
factory = new DivFactory();
break;
}
Operation operation = null;
if (factory != null)
{
operation = factory.CreateOperation();
}
operation.NumberA = Convert.ToDouble(strNumberA);
operation.NumberB = Convert.ToDouble(strNumberB);
Console.WriteLine("结果为: " + operation.GetResult());
Console.ReadLine();
}