未定义引用错误++动态成员

-1

大家好即时通讯新的节目，所以借口noob问题...我想尽方法与不确定refernce错误打通，但它不断抛出的错误我我尝试使用指针“ - >”和“::”符号以及点“。”。我该怎么办？为什么不能编译？未定义引用错误++动态成员

这是我的CPP文件：

#include <cstdlib> 
#include "account.hpp" 

using namespace std; 

int Account::getAccountNumber() 
    { 
     return accountNumber; 
    } 
double Account::getBalance() 
    { 
     return balance; 
    } 
void Account::createAccount(LinkedList<Account>& accountsList, string name, int idNumber) 
{ 
... 
    case 1: 
     accountsList.addFront(newAcc); //Where the error occurs. 
     break; 
    case 2: 
     do 
     { 
      cout << "\n\tWhich position would you like to insert the\n" 
       << "\tnew account into?\n" 
       << "\tPosition number: #"; 
      cin >> target; 
      if (cin.fail()) 
      { 
       cin.clear(); 
       cin.ignore(20,'\n'); 
       cout << "\n\n\tSorry, wrong input. Please enter a correct position.\n\n"; 
       system("pause"); 
      } 
     } 
     while(cin.fail()); 
     accountsList.addMiddle(newAcc, target); //and here 
     break; 
    case 3: 
     accountsList.addEnd(newAcc); //and here 
     break; 
    } 
    cout << "\n\n\tAccount Created Successfully\n\n" 
     << accountsList; 
    system("pause"); 
}

，这里是我的.HPP

#ifndef ACCOUNT_HPP_INCLUDED 
#define ACCOUNT_HPP_INCLUDED 
#include "linkedlist.hpp" 
#include "generic.hpp" 

class Account : public GenericAccount 
{ 
    int accountNumber; 
    double balance; 
public: 
    Account(string name = "empty", int idNumber = 0, int accountNumber = 0, double balance = 0) 
     : GenericAccount(name, idNumber), accountNumber(accountNumber), balance(balance) {} 
    int getAccountNumber(); 
    double getBalance(); 
    void createAccount(LinkedList<Account>&, string, int); 
    void deposit(LinkedList<Account>&, Account&); 
    void withdraw(LinkedList<Account>&, Account&); 
    void displayAccount(LinkedList<Account>&, Account&); 
    void deleteAccount(LinkedList<Account>&); 

    friend istream& operator>> (istream& is, Account& x) 
    { 
     is >> x.accountNumber; 
     return is; 
    } 

    friend ostream& operator << (ostream& os, Account& c) 
    { 
     os << "Account Number= " << c.getAccountNumber() << "\t" 
      << "Balance= "<< c.getBalance() << endl; 
     return os; 
    } 

    friend bool operator == (Account& a, Account& target) 
    { 
     return (a.getAccountNumber() == target.getAccountNumber()); 
    } 

}; 


#endif // ACCOUNT_HPP_INCLUDED

整个项目可refernce 下载HERE谢谢大家前进！

来源

2013-08-24 user2657029

[什么是未定义的引用/未解析的外部符号错误，以及如何解决它？]（http：/ /stackoverflow.com/questions/12573816/what-is-an-undefined-reference-unresolved-external-symbol-error-and-how-doi-i-fix） –

它是'my.hpp'还是'account.hpp '因为你已经在my.ccp中包含后者 –

@gx_感谢您的链接我已经在我的搜索过程中检查出来 – user2657029

我认为问题是addFront方法没有被定义为账户类型（实际上是任何类型）。请参阅Why can templates only be implemented in the header file?以获得更好的解释。

在.h文件中移动内联cpp的内容应该有所诀窍。另一个选择是将.cpp文件重命名为.inl并将其包含在linkedList.hpp的底部

来源

2013-08-24 17:34:59 luke

未定义引用错误++动态成员

回答

相关问题