在 C# 中将利率添加到银行帐户

问题描述

我是 c# 新手，我为银行系统创建了三个帐户，分别是：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帐户中。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（不同），不允许透支，交易失败产生的费用。

Omni：仅对超过 1000 美元的余额支付利率；指定允许透支；失败交易的费用。

任何将其添加到我的类和代码中的帮助将不胜感激。只是现在真的卡住了。

// 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
    }

// Omni 帐户

    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
    }

// 帐号

       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");
        }


    }

解决方法

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