Question

我正在开发一个项目，该项目应该允许您创建表格的3个帐户（名称，帐户编号，余额），然后为您提供以下选项：

1）添加一个帐户。

2）关闭现有帐户。

3）存入金额。

4）撤回帐户

5）没有请求。

到目前为止，我能够成功创建3个帐户，显示它们，添加另一个帐户，再次显示它们，删除帐户并再次显示它们。但是，我无法找到从特定帐户存款或取款的方法。所以要明确的是，我的问题是：如何访问所选帐户的余额并存入/取出金额（请记住我使用向量来保存所有帐户）？

以下是我的代码：

的main.cpp

#include <iostream>
#include <vector>
#include "bank.hpp"
#include <string>
#include <fstream>
#include <stdlib.h>
using namespace std;

void fillaccounts(vector<bank>&);
void printaccounts(const vector<bank>&);
void createaccount(vector<bank>&);
void depositaccount(vector<bank>&);
void deleteaccount (vector<bank>&);

int main() {

vector<bank> mybank;

fillaccounts(mybank);

for (int i=0;i<5;i++) {

cout << "Please choose one of the following requests: " << endl;
cout << "(1) Create a new account." << endl;
cout << "(2) Close an existing account." << endl;
cout << "(3) Deposit an amount in one of your accounts." << endl;
cout << "(4) Withdraw an amount from one of your accounts." << endl;
cout << "(5) No request." << endl;
cout << "Enter your choice here: " << endl;

int request;
cin >> request;

switch (request) {
    case 1:
        createaccount(mybank);
        printaccounts(mybank);
        break;

    case 2:

        deleteaccount(mybank);
        printaccounts(mybank);
        break;

    case 3:

        depositaccount(mybank);
        printaccounts(mybank);
        break;

    case 4:

        break;

    case 5:

        break;

}
}
}


void fillaccounts(vector<bank>& newmybank) {

string name;
int accountnumber;
double balance;

for (int i=0; i<3;i++) {
    cout << "Enter your first name: " << endl;
    cin >> name;

    cout << "Enter account number: " << endl;
    cin >> accountnumber;

    cout << "Enter the amount you want to deposit: " << endl;
    cin >> balance;

    bank newAccount(name, accountnumber,balance);
    newmybank.push_back(newAccount);
    cout << endl;
}
cout << endl;

}

void createaccount(vector<bank>& newmybank) {

string name;
int accountnumber;
double balance;

    cout << "Enter your first name: " << endl;
    cin >> name;

    cout << "Enter account number: " << endl;
    cin >> accountnumber;

    cout << "Enter the amount you want to deposit: " << endl;
    cin >> balance;

    bank newAccount(name,accountnumber,balance);
    newmybank.push_back(newAccount);
    cout << endl;

}


void printaccounts(const vector<bank>& newmybank) {

for (unsigned int i=0; i<newmybank.size();i++) {

    cout << "(" << newmybank[i].getname() << "," <<    newmybank[i].getaccountnumber() << "," << newmybank[i].getbalance() << ")" << endl;

}
cout << endl;
}


void deleteaccount(vector<bank>& newmybank) {

string name;

cout << "Please enter your name to delete your account: " << endl;
cin >> name;
cout << endl;

for (int i=0; i<newmybank.size(); i++) {

    if (newmybank[i].newname == name) {

        newmybank.erase(newmybank.begin()+i);

    }
}
}

Bank.cpp

#include "Bank.hpp"
#include <iostream>
#include <string>
#include <vector>
using namespace std;

bank::bank() {

newname=' ';
newaccountnumber=0;
newbalance=0.0;
}

bank::bank(string name,int accnum,double amount) {
newname=name;
newaccountnumber=accnum;
newbalance=amount;
}

string bank::getname() const {
return newname;
}

int bank::getaccountnumber() const {
return newaccountnumber;
}

double bank::getbalance() const {
return newbalance;
}

void bank::setname(string name) {
newname=name;
}

void bank::setaccountnumber(int accountnumber) {
newaccountnumber=accountnumber;
}

void bank::setbalance(double balance) {
newbalance=balance;
}

Bank.hpp

class bank {


public:

string newname;
int newaccountnumber;
double newbalance;

bank(); //Constructor

bank(string,int,double); //Overload Constructor

string getname() const;
int getaccountnumber() const;
double getbalance() const;
void setname(string);
void setaccountnumber(int);
void setbalance(double);

};

有关如何跟进的任何建议？谢谢你们！

Answer 1

执行此操作的一种方法是向您的银行类添加一项功能，该功能会向帐户余额添加特定金额，然后在您想要更改帐户值（即存入/取款）或创建2时调用此方法单独的方法。

类似的东西：

void bank::deposit(int num)
{
    newbalance += num;
}

然后，您将有一个用户指定银行帐号（或名称），因为我认为您不希望更改每个帐户的每个余额。函数getAccountIndex可能遍历每个帐户以查找指定的数据，然后返回向量中的索引。

当您拥有索引时，您可以像deposit

那样调用mybank[index].deposit(amount);方法

请注意，bank类中的变量是公共的，因此您不需要获取/设置方法，但这被认为是不好的做法，因此您应该将这些变量设为私有。

使用向量的银行账户（存款和取款）

1 个答案: