利息计算中的无穷大

本文关键字：无穷大 计算 | 更新日期: 2023-09-27 18:27:01

感谢Laurence Burke在我关于isMaybeMoney函数的另一个问题中的回答，我能够确定输入是否为货币。

我现在正在做的是计算利息后的总额，但我一直在屏幕上写Infinity。我感兴趣的功能到底出了什么问题？当我用1234美元作为起始余额，利息为3.5%时，应该是3522.55美元。

有人能帮帮我吗？

static float money;
static void Main()
{
    string[] myMaybeBalances = Accounts.GetStartingBalances();
    myIsMaybeMoneyValidator Miimv = new myIsMaybeMoneyValidator();
    ArrayList interests = Miimv.interestsAccrued(myMaybeBalances);
    foreach (object interest in interests)
    {
        Console.WriteLine(interest);
    }
    Console.ReadLine();
}
public ArrayList interestsAccrued(string[] myMaybeBalances)
{
    ArrayList interests = new ArrayList();
    foreach (string myMaybeBalance in myMaybeBalances)
    {
        bool myResult = isMaybeMoney(myMaybeBalance);
        if (myResult == true)
        {
            decimal[] rates = Accounts.GetRates();
            for (int i = 0; i < rates.Length; i++)
            {
                decimal rate = rates[i];
                float total = 1;
                int n_X_t = 360;
                while (n_X_t != 0)
                {
                    rate = (1 + rates[i] / 12);
                    float myRate;
                    float.TryParse(rate.ToString(), out myRate);
                    total = total * myRate;
                    total = total * money;
                    n_X_t = n_X_t - 1;
                }
                interests.Add(total);
            }
        }
    }
    return interests;
}
public bool isMaybeMoney(object theirMaybeMoney)
{
    string myMaybeMoney = theirMaybeMoney.ToString();
    float num;
    bool isValid = float.TryParse(myMaybeMoney,
    NumberStyles.Currency,
    CultureInfo.GetCultureInfo("en-US"), // cached
    out num);
    money = num;
    return isValid;
}

利息计算中的无穷大

在while循环中，你将total乘以每一步的速率，这似乎很合理，但你也将total除以变量"money"的值，据我所知，这是起始余额。

所以你乘以起始平衡360倍。要是我的储蓄账户能这样就好了！我不确定其余的逻辑是否正确，但首先，请尝试移动

total = total * money;

在线下

float total = 1;

（或者最好只是从中更改

float total = 1;

至

float total = money;

并消除线路

total = total * money;

总共）

您所拥有的代码不会进行求值。利息计算的构造循环没有好处！这是不必要的，但引入了高并发症的很大风险

以下是您想要使用FUNCTIONARY封装的代码：

    static void Main() 
    { 
        var interests = new List<decimal>(); 
        foreach (string possibleBalance in Accounts.GetStartingBalances()) 
        foreach (decimal rate in Accounts.GetRates()) 
        { 
            decimal balance; 
            if (!decimal.TryParse(possibleBalance, NumberStyles.Currency, CultureInfo.CurrentCulture, out balance))  
                continue; 
            decimal interest = CalculateInterestAccrued(balance, rate, 12, 30); 
            interests.Add(interest); 
        } 
        foreach (decimal interest in interests) 
            Console.WriteLine(interest); 
        Console.ReadKey(); 
    } 
    static decimal CalculateInterestAccrued(decimal principal, decimal rate, int compoundsPerYear, int years) 
    { 
        return principal * (decimal)Math.Pow((double)(1 + rate / compoundsPerYear), compoundsPerYear * years); 
    }

谢谢，

PRASHANT:）

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