"C + + Chapter fourth personal bank Account management procedures case"

"Fourth chapter" personal Bank Account management procedure case Realization

#include <iostream> #include <cmath>using namespace Std;class savingsaccount//Savings account class {Private:int id;// Account double balance; Balance double rate; Deposit of the annual interest rate int lastdate; Date of last change of balance double accumulation; Balances are combined by daily and static double total; The total amount of all accounts//record one account, date, desc is the description void record (int date, double amount);//The deposit amount to a specified date is accumulated by a daily value of double accumulate (int Date) Const{return accumulation + balance* (date-lastdate);} public://constructor SavingsAccount (int date, int ID, double rate), int getId () const {return ID;} Double GetBalance () const {return balance;} Double getrate () const {return rate;} void deposit (int date, double amount); Deposit in cash void withdraw (int date, double amount); Withdraw cash//settlement interest, call the function void settle (int date) every January 1,//Display account information void Show () const;}; Savingsaccount::savingsaccount (int date, int ID, double rate): ID (ID), balance (0), rate, lastdate (date), Accumulation (0) {cout << date << "\t#" << ID << "is created" << Endl;} void Savingsaccount::record (int date, double AMount) {accumulation = accumulate (date), lastdate = Date;amount = Floor (Amount * 100 + 0.5)/100;//reserved decimal point two bits balance + = Amou Nt;cout << Date << "\t#" << ID << "\ t" << amount << "\ t" << balance << End l;} void SavingsAccount::d eposit (int date, double amount) {record (date, amount);} void Savingsaccount::withdraw (int date, double amount) {if (Amount>getbalance ()) cout << "Error:not enough money "<< Endl;elserecord (date,-amount);}  void Savingsaccount::settle (int date) {Double interest = accumulate (date) *rate/365;//Calculate annual interest if (interest! = 0) record (date, interest); accumulation = 0;} void Savingsaccount::show () const{cout << "#" << ID << "\tbalance:" << balance; int main () {//Establish several accounts SavingsAccount sa0 (1, 21325302, 0.015); SavingsAccount SA1 (1, 58320212, 0.015);//Several accounts sa0.deposit (5, 10000); Sa1.deposit (45, 5500); Sa1.withdraw (60, 4000);//The 90th day after the opening of the account to the bank's interest date, the settlement of all accounts at an annual sa0.settle (90);//output Individual account information SA0.show (); cout << endl;sa1.show (); cout << Endl;return 0;}

　　

Ps:

Supporting materials: PhD "C + + programming language"

Course: the Academy Online "C + + programming language"

"C + + Chapter fourth personal bank Account management procedures case"