C/code/定义并实现一个银行类(Bank).cpp

#include <iostream>
using namespace std;

class Bank {
private:
    long ID;
    double Balance;
    static double Rational;

public:
    Bank() : ID(10000), Balance(0) {} // 默认构造函数
    Bank(long id, double balance) : ID(id), Balance(balance) {} // 带参数构造函数

    void setID(long id) { 
		ID = id; 
	}
    void setBalance(double d) { 
		Balance = d; 
	}
    double getBalance() { 
		return Balance; 
	}

    static void setRational(double r) { 
		Rational = r; 
	}
    static double getRational() { 
		return Rational; 
	}

    void display() {
        cout << "账号:" << ID << ";   存款:" << Balance << ";   本息:" << Balance * ( Rational / 100) << endl;
    }
};

double Bank::Rational = 0; // 初始化静态数据成员

int main() {
    double rate;
    cout << "请输入利率:";
    cin >> rate;
    Bank::setRational(rate); // 设置利率

    long id;
    double balance;

    cout << "请输入3个账号及对应的存款:" << endl;
    
    c.display(); // 输出系统缺省账户信息
 
 	double totalInterest = 0;
    for (int i = 0; i < 3; ++i) {
        cin >> id >> balance;
        Bank account(id, balance);
        account.display(); // 输出新建账户信息
        totalInterest += balance * (1 + Bank::getRational() / 100);
    }

    cout << "3个账户的本息:" << totalInterest << endl;

    return 0;
}