private static void Main(string[] args)
{
try
{
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();
string strResult = "";
Operation operation = new Operation();
switch (strOperate)
{
case "+":
operation = new OperationAdd();
break;
case "-":
operation = new OperationSub();
break;
case "*":
operation = new OperationMul();
break;
case "/":
operation = new OperationDiv();
break;
}
operation.NumberA = Convert.ToDouble(strNumberA);
operation.NumberB = Convert.ToDouble(strNumberB);
strResult = operation.GetResult().ToString();
Console.WriteLine("结果是：" + strResult);
Console.ReadLine();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
Console.ReadLine();
}
}
private static void Main(string[] args)
{
try
{
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();
string strResult = "";
Operation operation = new Operation();
switch (strOperate)
{
case "+":
operation = new OperationAdd();
break;
case "-":
operation = new OperationSub();
break;
case "*":
operation = new OperationMul();
break;
case "/":
operation = new OperationDiv();
break;
}
operation.NumberA = Convert.ToDouble(strNumberA);
operation.NumberB = Convert.ToDouble(strNumberB);
strResult = operation.GetResult().ToString();
Console.WriteLine("结果是：" + strResult);
Console.ReadLine();
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
Console.ReadLine();
}
}