C++函數重定義

我不斷收到函數重定義錯誤，我不知道爲什麼。我已經看過類似的問題，但我無法從他們那裏收集任何答案 - 我有頭衛兵，據我所知，我已經包含了正確的文件，並沒有重新定義標題。錯誤如下：C++函數重定義

Contact.cpp:188:2: error: redefinition of ‘communication::Contact::Contact(const communication::Contact&)’ 
Contact.h:35:3: error: ‘communication::Contact::Contact(const communication::Contact&)’ previously defined here 
Contact.cpp:208:18: error: redefinition of ‘communication::Contact& communication::Contact::operator=(const communication::Contact&)’ 
Contact.h:36:12: error: ‘communication::Contact& communication::Contact::operator=(const communication::Contact&)’ previously defined here

CPP文件的標題和相關塊如下。任何幫助深表感謝。

頁眉：

#ifndef CONTACT_H 
#define CONTACT_H 

namespace communication { 
     class Contact 
     { 
       char m_name[21]; 
       long long* m_phoneNumbers; 
       int m_noOfPhoneNumbers; 
     public: 
       Contact(); 
       Contact (const char * c_name, long long contactList[], int numContacts); 
       ~Contact(); 
       void display() const; 
       bool isEmpty() const; 
       void addPhoneNumber(long long phoneNumber); 

       //Definitions of the functions causing problems 
       Contact(const Contact& other) = delete; 
       Contact& operator=(const Contact& other) = delete; 
     }; 
} 

#endif

CPP：

//Copy constructor 
     Contact::Contact (const Contact& other) { 
       strcpy(m_name,other.m_name); 
       m_noOfPhoneNumbers = other.m_noOfPhoneNumbers; 

       //Checks to see if the array being copied is empty 
       if (other.m_phoneNumbers != nullptr) { 
         //Allocates the appropriate amount of memory to m_phoneNumbers 
         m_phoneNumbers = new long long[m_noOfPhoneNumbers]; 

         //Goes through and copies the phone numbers to this.m_phoneNumbers from other.m_Phon$ 
         for (int i = 0; i < m_noOfPhoneNumbers; i++) { 
           m_phoneNumbers[i] = other.m_phoneNumbers[i]; 
         } 
       } 
       else { 
         m_phoneNumbers = nullptr; 
       } 
     } 
     //Copy assignment operator 
     Contact& Contact::operator=(const Contact& other) { 
       //Checks to make sure that the object is not being assigned to itself 
       if (this != &other) { 
         //Copies name and number of phone numbers to the left operand 
         strcpy(m_name,other.m_name); 
         m_noOfPhoneNumbers = other.m_noOfPhoneNumbers; 

         //Deallocates memory that may have been given previously 
         delete [] m_phoneNumbers; 

         //Checks to see if the array being copied is empty 
         if (other.m_phoneNumbers != nullptr) { 
           //Allocates the appropriate amount of memory to m_phoneNumbers 
           m_phoneNumbers = new long long[m_noOfPhoneNumbers]; 

           //Goes through and copies the phone numbers to this.m_phoneNumbers from other.m_PhoneNumbers 
           for (int i = 0; i < m_noOfPhoneNumbers; i++) { 
             m_phoneNumbers[i] = other.m_phoneNumbers[i]; 
           } 

         } 
         else { 
           m_phoneNumbers = nullptr; 
         } 
       } 

       return *this; 
     }

來源

2017-03-03 clocksnclogs

您已將它們標記爲刪除，這意味着編譯器不會期望它們。是否有一個原因？ –

你爲什麼刪除這些功能？ –

另外，使用std :: string，而不是char數組。 –

在你的頭文件，你已經聲明

Contact(const Contact& other) = delete; 
Contact& operator=(const Contact& other) = delete;

在源（CPP）

爲delete，然後提交你試圖實現它們，這是編譯器意想不到的行爲。您應該刪除頭文件中的delete關鍵字，或從源文件（cpp）中刪除它們的實現。

來源

2017-03-03 00:53:31

C++函數重定義

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