C/code/定义并实现一个银行类(Bank).cpp

#include  <iostream>
using  namespace  std;
//Bank的定义
class  Bank{
                
private:
    long ID; 
    double Balance;

                static  double  Rational;  //存款利率
        public:
                
    Bank() : ID(10000), Balance(0) {}

    Bank(long id, double balance) : ID(id), Balance(balance) {}

    void setID(long id) {
        ID = id;
    }

    void setBalance(double d) {
        Balance = d;
    }

    double getBalance() {
        return Balance;
    }

    static void setRational(double r) {
        Rational = r / 100.0;  // 将百分比转换为小数
    }

    static double getRational() {
        return Rational;
    }

    void display() {
        double interest = Balance * Rational;
        cout << "账号:" << ID << ";   存款:" << Balance << ";   利息:" << interest << endl;
    }

};

double Bank::Rational = 0;


int  main()
{
                Bank  c;//系统缺省账户
        
    double rate;
    cout << "请输入利率:";
    cin >> rate;
    Bank::setRational(rate);


    Bank defaultAccount;
    Bank accounts[3];
    long id;
    double balance;
    cout << "请输入3个账号及对应的存款:" << endl;
    for (int i = 0; i < 3; ++i) {
        cin >> id >> balance;
        accounts[i].setID(id);
        accounts[i].setBalance(balance);
    }

    defaultAccount.display();

    for (int i = 0; i < 3; ++i) {
        accounts[i].display();
    }

    double totalInterest = defaultAccount.getBalance() * Bank::getRational();
    for (int i = 0; i < 3; ++i) {
        totalInterest += accounts[i].getBalance() * Bank::getRational();
    }

    double totalPrincipal = defaultAccount.getBalance();
    for (int i = 0; i < 3; ++i) {
        totalPrincipal += accounts[i].getBalance();
    }
    cout << "3个账户的本息:" << totalPrincipal + totalInterest << endl;

    return 0;

}