error in copy constructor
 

Potion of my code:

class UserCommand{

        string cHandle;                        //definition of command

        int numPara;

        vector<int> cPara;                //parameter of command

public:

        UserCommand(string ucData);

        //copy constructor

        UserCommand(const UserCommand& uc);

        

        inline const string getHandle(){return cHandle;};

        inline const int getPara(int i){return cPara.at(i);};

        inline const int getNumPara(){return numPara;};

        

        //overload operator = here

           inline UserCommand operator=(UserCommand& uc); 

}; //



//...



UserCommand::UserCommand(const UserCommand& uc){ 

        cHandle=uc.getHandle();

        numPara=uc.getNumPara();

        for(int i=0;i<numPara;i++) cPara[i]=uc.getPara(i);

}

Pretty straighforward. But I keep got error:
error: passing `const UserCommand' as `this' argument of `std::string UserCommand::getHandle()' discards qualifiers

I am using gcc under redhat, anyone can help me on this? thanks in advance.

Re: error in copy constructor
 

        inline const string getHandle(){return cHandle;};

        inline const int getPara(int i){return cPara.at(i);};

        inline const int getNumPara(){return numPara;};

I believe it's telling you it would prefer that the this pointer be const. (And function definitions don't end with a semicolon.)

   inline string getHandle() const { return cHandle; }

   inline int getPara(int i) const { return cPara.at(i); }

   inline int getNumPara()   const { return numPara; }

Re: error in copy constructor
 

Thanks a lot, I always misplace the const keyword.