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我正在开发一个计算应付所得税的模块化程序。在我看来这是有道理的，但我的程序只运行一行代码，然后就停止了……没有错误消息，什么也没有。我感觉这与我的 CalculateTaxDue 类中的 while 循环有关

程序必须： a) 从用户那里获得有效输入（在一个类中） b) 计算应纳税额（在另一个类中） c) 显示用户输入的应纳税所得额，按照统一税率缴纳应纳税额，根据可变百分比的应缴税款和应缴税款总额（在另一类中）

到目前为止，这是我的程序。我觉得它应该运行正常，但它没有。

class Program
{
    static void Main(string[] args)
    {
        // declare variables
        double taxableIncome, incomeTaxDue, flatRate, variablePercentage;

        // get user input
        taxableIncome = GetTaxableInput.GetDouble("Please enter your total income: ");

        // calculate tax due
        incomeTaxDue = CalculateTaxDue.GetTaxableIncome(taxableIncome);

        // display taxable income
        DisplayTaxRate.DisplayTaxableIncome("Your total income is: ", taxableIncome);

        // display flat rate
        flatRate = CalculateTaxDue.GetFlatRate(taxableIncome);
        DisplayTaxRate.DisplayFlatRate("Your tax rate is: ", flatRate);

        // display variable percentage
        variablePercentage = CalculateTaxDue.GetVariablePercentage(taxableIncome);
        DisplayTaxRate.DisplayVariablePercentage("Your variable percentage is: ", variablePercentage);

        // display total tax due
        DisplayTaxRate.DisplayTotalTaxDue("Your total income tax due is: ", incomeTaxDue);

        // keep console open
        Console.ReadLine();
    }
}

class GetTaxableInput
{
    public static double GetDouble(string message)
    {
        // declare variable
        double result;
        // ask for input
        Console.Write(message);
        // capture and validate the user input
        while (!double.TryParse(Console.ReadLine(), out result))
        {
            Console.WriteLine("Invalid input ");
            Console.Write(message);
        };
        return result;
    }
}

class CalculateTaxDue
{
    public static double GetTaxableIncome(double taxableIncome)
    {
        double incomeTaxDue;
        double flatRate;
        double variablePercentage;

        // calculate and return total income tax due.
        while (!double.TryParse(Console.ReadLine(), out incomeTaxDue))
        {

            if (taxableIncome < 0)
            {
                flatRate = 0;
                variablePercentage = 0;
                incomeTaxDue = taxableIncome * variablePercentage + flatRate;
            }
            else if (taxableIncome < 49999)
            {
                variablePercentage = 0.05;
                flatRate = 0;
                incomeTaxDue = taxableIncome * variablePercentage + flatRate;
            }
            else if (taxableIncome < 99999)
            {
                variablePercentage = 0.07;
                flatRate = 2500;
                incomeTaxDue = taxableIncome * variablePercentage + flatRate;
            }
            else if (taxableIncome > 100000)
            {
                variablePercentage = 0.09;
                flatRate = 6000;
                incomeTaxDue = taxableIncome * variablePercentage + flatRate;
            }
        }
        return incomeTaxDue;
    }

    // calculate and return the tax rate
    public static double GetFlatRate(double taxableIncome)
    {
        double incomeTaxDue;
        double flatRate;
        double variablePercentage;

        while (!double.TryParse(Console.ReadLine(), out flatRate))
        {

            if (taxableIncome < 0)
            {
                flatRate = 0;
                variablePercentage = 0;
                incomeTaxDue = taxableIncome * variablePercentage + flatRate;
            }
            else if (taxableIncome < 49999)
            {
                variablePercentage = 0.05;
                flatRate = 0;
                incomeTaxDue = taxableIncome * variablePercentage + flatRate;
            }
            else if (taxableIncome < 99999)
            {
                variablePercentage = 0.07;
                flatRate = 2500;
                incomeTaxDue = taxableIncome * variablePercentage + flatRate;
            }
            else if (taxableIncome > 100000)
            {
                variablePercentage = 0.09;
                flatRate = 6000;
                incomeTaxDue = taxableIncome * variablePercentage + flatRate;
            }
        }
        return flatRate;
    }

    // calculate and return the variable percentage ( tax rate )
    public static double GetVariablePercentage(double taxableIncome)
    {
        double incomeTaxDue;
        double flatRate;
        double variablePercentage;

        while (!double.TryParse(Console.ReadLine(), out variablePercentage))
        {

            if (taxableIncome < 0)
            {
                flatRate = 0;
                variablePercentage = 0;
                incomeTaxDue = taxableIncome * variablePercentage + flatRate;
            }
            else if (taxableIncome < 49999)
            {
                variablePercentage = 0.05;
                flatRate = 0;
                incomeTaxDue = taxableIncome * variablePercentage + flatRate;
            }
            else if (taxableIncome < 99999)
            {
                variablePercentage = 0.07;
                flatRate = 2500;
                incomeTaxDue = taxableIncome * variablePercentage + flatRate;
            }
            else if (taxableIncome > 100000)
            {
                variablePercentage = 0.09;
                flatRate = 6000;
                incomeTaxDue = taxableIncome * variablePercentage + flatRate;
            }
        }
        return variablePercentage;
    }
}

class DisplayTaxRate
{
    public static void DisplayTaxableIncome(string message, double numberValue)
    {
        Console.WriteLine("{0} {1:c}", message, numberValue);
    }
    public static void DisplayFlatRate(string message, double numberValue)
    {
        Console.WriteLine("{0} {1:c}", message, numberValue);
    }
    public static void DisplayVariablePercentage(string message, double numberValue)
    {
        Console.WriteLine("{0} {1:P}", message, numberValue);
    }
    public static void DisplayTotalTaxDue(string message, double numberValue)
    {
        Console.WriteLine("{0} {1:c}", message, numberValue);
    }
}

它在那里。就像我之前说的，我没有收到任何错误消息，所以我不知道从哪里开始。谢谢！

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1 回答 1

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我想到了。出于某种原因，我有一个 while 循环来获取我的计算类的输入：/ 感谢 Chris Dunaway！现在就像一个魅力。

于 2012-12-09T01:47:24.887 回答