public static Test0 Get(string op)
{
Test0 t = null;
switch (op)
{
case "+": t = new Test1(); break;
case "-": t = new Test2(); break;
}
return(t);
}
static void Main(string[] args)
{
Console.WriteLine("数字1");
var num1 = Console.ReadLine();
Console.WriteLine("数字2");
var num2 = Console.ReadLine();
Console.WriteLine("符号");
var fuhao = Console.ReadLine();
Test0 t = SimpleFactory.Get(fuhao);
t.Num1 = num1;
t.Num2 = num2;
Console.WriteLine(t.GetResult());
Console.ReadKey();
}