Question

在setter方法中设置字符串时，我需要做些什么吗？这是我的班级：

class SavingsAccount
{
public:
    void setData();
    void printAccountData();
    double accountClosure() {return (accountClosurePenaltyPercent * accountBalance);}
private:
    int accountType;
    string ownerName;
    long ssn;
    double accountClosurePenaltyPercent;
    double accountBalance;
};

void SavingsAccount::setData()
{
    cout << "Input account type: \n";
    cin >> accountType;
    cout << "Input your name: \n";
    cin >> ownerName;
    cout << "Input your Social Security Number: \n";
    cin >> ssn;
    cout << "Input your account closure penalty percent: \n";
    cin >> accountClosurePenaltyPercent;
    cout << "Input your account balance: \n";
    cin >> accountBalance;
}


int main()
{
    SavingsAccount newAccount;
    newAccount.setData();
}

Answer 1

不要称它为“setter”:)？它不接受任何参数并从stdin读取数据，而对于setter，通常的语义是获取参数并将其分配给适当的字段。这个可以被称为“readData（）”

Answer 2

您是否收到了代码中的任何错误，或者您只是在寻求最佳方法？实际上，您应该将相关代码重构为相关函数，以便在主方法中保持控制台输入和输出，并通过参数将数据传递给函数。但无论如何没有重构尝试这个：

#include <sstream>
#include <iostream>

using namespace std;

class SavingsAccount
{
 public:
  void setData();
  void printAccountData();
  double accountClosure() {return (accountClosurePenaltyPercent*accountBalance);}
 private:
  int accountType;
  string ownerName;
  long ssn;
  double accountClosurePenaltyPercent;
  double accountBalance;
};

void SavingsAccount::setData()
{
 stringstream str;

 cout << "Input account type: \n";
 cin >> str;
 str >> accountType; // convert string to int

 cout << "Input your name: \n";
 cin >> str;
 str >> ownerName;

 cout << "Input your Social Security Number: \n";
 cin >> str;
 str >> ssn; // convert to long

 cout << "Input your account closure penalty percent: \n";
 cin >> str;
 str >> accountClosurePenaltyPercent; // convert to double

 cout << "Input your account closure penalty percent: \n";
 cin >> str;
 str >> accountClosurePenaltyPercent; // convert to double

 cout << "Input your account balance: \n";
 cin >> str;
 str >> accountBalance; // convert to double
}

int main()
{
 SavingsAccount newAccount;
 newAccount.setData();
}

在setter方法中设置字符串

2 个答案: