用C++编写相关程序3

Question

请编写程序,上机调试，题目如下图，请按题目要求编写，并给出程序

Answer 1

运行结果：

代码：

#include <iostream>
using namespace std;

class Bank
{
protected:
    double interest; //利息
    int year;
    double money;
    double rates; //利率
public:
    Bank(int y, double m, double r) { year = y,money = m; rates = r; }

    void Cal_interest()
    {
        interest = year * money * rates;
        //cout << "parent Cal..." << endl;
        //return interest;
    }
    double GetInterest() { return interest; }
};

class ContructionBank:public Bank
{
private:
    double year;
    double rates;
public:
    ContructionBank(double y, double m, double ry,double rd) :Bank((int)y, m, ry)
    {
        year = y;
        rates = rd;
    }
    void Cal_interest()
    {
        Bank::Cal_interest();
        //cout << "Constructbank Cal..." << endl;
        //得到天数
        double t = this->year - Bank::year;
        while ((t-(int)t) > 0.00001)
        {
            t *= 10;
        }
        //天利息
        double r2 = (int)t * money * this->rates;
        //
        interest = GetInterest() + r2;
        //return interest;
    }
};

class XMBank :public Bank
{
private:
    double year;
    double rates;
    double largemoney; //大额
public:
    XMBank(double y, double m, double ry, double rd) :Bank((int)y, m, ry)
    {
        year = y;
        rates = rd;
    }
    void Cal_interest()
    {
        Bank::Cal_interest();
        //cout << "XMbank Cal..." << endl;
        //得到天数
        double t = this->year - Bank::year;
        while ((t - (int)t) > 0.00001)
        {
            t *= 10;
        }
        //天利息
        double r2 = (int)t * money * this->rates;
        //
        interest = GetInterest() + r2;
        //return interest;
    }
    void Set_large_deposit(double m, double yr, double dr)
    {
        if (money >= m)
        {
            Bank::rates = yr;
            this->rates = dr;
        }
    }
};

int main()
{
    ContructionBank cb(5.216, 50000, 0.035, 0.0001);
    XMBank xb(5.216, 50000, 0.035, 0.00015);
    xb.Set_large_deposit(20, 0.04, 0.00018);//大额存款
    cb.Cal_interest();
    xb.Cal_interest();

    double cbr = cb.GetInterest();
    double xbr = xb.GetInterest();
    cout <<"5万元存5年零216天，在建行和厦门银行的利率差为：" << cbr - xbr << endl;
    return 0;
}