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我是 c# 的新手，我为银行系统创建了三个帐户，它们是：Everyday、Investment 和 Omni。我遇到的问题是我无法弄清楚如何将利率和费用添加到班级账户中。以下是每个班级的要求：

日常账户：无利息、无透支、无费用

投资：所有资金支付的利率（可变），不允许透支，交易失败产生的费用。

Omni：仅对超过 1000 美元的余额支付的利率；指定允许透支；交易失败的费用。

将不胜感激将其添加到我的课程和代码中的任何帮助。只是此刻真的卡住了。

// 日常账户

    class Everyday : Account
    {
        //field

        private double minBalance;
        private double maxBalance;


        //properties
        public double MinBalance
        { get { return this.minBalance; } }

        public double MaxBalance
        { get { return this.maxBalance; } }

        //constructors

        public Everyday(double balance) : base()
        {
            this.minBalance = 0;
            this.maxBalance = 1000000000000;
            this.balance = balance;
            accountType = "Everyday Account";
        }

        //methods
    }

// 投资账户

    class Investment : Account
    {
        //field

        private double minBalance;
        private double maxBalance;


        //properties
        public double MinBalance
        { get { return this.minBalance; } }

        public double MaxBalance
        { get { return this.maxBalance; } }

        //constructors

        public Investment(double balance) : base()
        {
            this.minBalance = 0;
            this.maxBalance = 1000000000000;
            this.balance = balance;
            accountType = "Investment Account";
        }

        //methods
    }

// 全方位账户

    class Omni : Account
    {
        //field

        private double minBalance;
        private double maxBalance;


        //properties
        public double MinBalance
        { get { return this.minBalance; } }

        public double MaxBalance
        { get { return this.maxBalance; } }

        //constructors

        public Omni(double balance) : base()
        {
            this.minBalance = 0;
            this.maxBalance = 1000000000000;
            this.balance = balance;
            accountType = "Omni Account";
        }

        //methods
    }

// 帐户

       class Account : Customer
       {

        // Fields

        private double accountNumber;
        protected string accountType;

        protected double balance;
        protected double deposit;
        protected double withdrawal;

        // Properties

        public string AccountType
        {
            get { return this.accountType; }
        }

        public double Withdrawal
        {
            get { return this.withdrawal; }
            set { this.withdrawal = value; }
        }
        public double Deposit
        {
            get { return this.deposit; }
            set { this.deposit = value; }
        }
        public double AcctNumber
        { get { return this.accountNumber; } }

        public double Bal
        { get { return this.balance; } }


        // Creating Random Account Number

        public virtual double AccountNumb()
        {
            Random rand = new Random();
            this.accountNumber = rand.Next(100000000, 1000000000);
            return accountNumber;
        }


        //Computes General Balance(resets values)
        public virtual double Balance()
        {
            balance = balance + deposit - withdrawal;
            deposit = 0;
            withdrawal = 0;
            return balance;
        }

        //Computers Balance when withdrawal equals zero
        public virtual double DepositBalance(double input)
        {
            deposit = input;
            withdrawal = 0;
            balance = balance + deposit - withdrawal;
            return balance;
        }

        //Computers balance when deposit equals zero
        public virtual double WithBalance(double input)
        {
            withdrawal = input;
            deposit = 0;
            balance = balance + deposit - withdrawal;
            return balance;
        }


        //displays online banking menu
        public virtual void DisplayMenu()
        {
            Console.WriteLine("Welcome to your online bank account\nPlease choose from the options below: ");
            Console.WriteLine("");
            Console.WriteLine("1.View Client Info");
            Console.WriteLine("");
            Console.WriteLine("2. View Account Balance:");
            Console.WriteLine("     2A.Everyday\n     2B.Investment\n     2C.Omni");
            Console.WriteLine("");
            Console.WriteLine("3.Deposit Funds:\n     3A.Everyday\n     3B.Investment\n     3C.Omni");
            Console.WriteLine("");
            Console.WriteLine("4.Withdraw Funds:\n     4A.Everyday\n     4B.Investment\n     4C.Omni");
            Console.WriteLine("");
            Console.WriteLine("5.Exit");
        }


    }
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1 回答 1

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在投资类：`类投资：帐户{ //字段

    private double minBalance;
    private double maxBalance;
    //add this
    private double tax;


    //properties
    public double MinBalance
    { get { return this.minBalance; } }

    public double MaxBalance
    { get { return this.maxBalance; } }
    public double Tax{get{return this.tax;}}

    //constructors

    public Investment(double balance) : base()
    {
        this.minBalance = 0;
        this.maxBalance = 1000000000000;
        this.balance = balance*Tax+balance;
        accountType = "Investment Account";
    }

    //methods
}

and in omni class: Omni 类：帐户 { //字段

    private double minBalance;
    private double maxBalance;
    private double Tax;


    //properties
    public double MinBalance
    { get { return this.minBalance; } }

    public double MaxBalance
    { get { return this.maxBalance; } }

    public double Tax{get{return this.tax;}}
    //constructors

    public Omni(double balance) : base()
    {
        this.minBalance = 0;
        this.maxBalance = 1000000000000;
        if (balance>=1000){this.balance=blance*Tax+balance}
        else {this.balance=balance}
        accountType = "Omni Account";
    }

    //methods
}

`

于 2021-09-02T13:36:49.207 回答