c++银行账户管理程序4（最终版）

c++银行账户管理程序4（最终版）

在C++银行账户管理程序3的基础上做如下改进：
在基类Account中添加deposit、withdraw、settle这3个函数并将其声明为纯虚函数；将show函数声明为虚函数，通过基类的指针可以调用派生类的相应函数。将计算两个日期相差天数的distance函数改为“—”运算符重载函数。

main.cpp

#include<iostream>
#include<string.h>
#include"date.h"
#include"account.h"
using namespace std;
double Account::total = 0;
int main()
{
   
   
    Date d01(2008,11,5),d02(2008,12,5),d11(2008,11,25),d12(2008,12,20),d2(2009,1,1),dc1(2008,11,15),dc2(2008,12,1);
    Account *ptr;           //定义基类指针
    cout<<"--------------------------------"<<"1001"<<"------------------------------"<<endl;
    SavingsAccount s0(2008,11,1,1001,0,0.015);
    ptr=&s0;                //基类指针调用
    ptr->deposit(d01,5000);
    ptr->deposit(d02,5500);
    ptr->settle(d2);
    d2.show();
    ptr->show();
    cout<<"------------------------------------------------------------------"<<endl;
    cout<<"--------------------------------"<<"1002"<<"------------------------------"<<endl;
    SavingsAccount s1(2008,11,1,1002,0,0.015);
    ptr=&s1;
    ptr->deposit(d11,10000);
    ptr->withdraw(d12,4000);
    ptr->settle(d2);
    d2.show();
    ptr->show();
    cout<<"------------------------------------------------------------------"<<endl;
    cout<<"--------------------------------"<<"1003"<<"------------------------------"<<endl;
    CreditAccount c0(2008,11,1,1003,0,10000,0.0005,50);
    ptr=&c0;
    ptr->deposit(dc1,2000);
    ptr->withdraw(dc2,2000);
    ptr->withdraw(dc2,-c0.getDebt(dc2));    //结算利息
    ptr->settle(d2);
    d2.show();
    ptr->show();
    cout<<"------------------------------------------------------------------"<<endl;
    d2.show();
    ptr->getTotal();
    cout<<"------------------------------------------------------------------"<<endl;