Const static arrays and classes

[Ramzi89]

Hi

I'm trying to create a const static array of string for a pure virtual base class. Can anyone see what I'm doing wrong?

  class Item
{
private:
protected:
	string sellername;
	int price;
	static const string mediumar [ ] = {"Oils","Watercolour", "Other"};
public: 
	Item(string sellername1, int price1);
virtual void display()= 0;

};

[AbstractionAnon]

Are you using a C++11 compiler?
The syntax in line 7 is only supported in C++11.

[Ramzi89]

hmm good question. I am using g++ on linux and installed it a couple of weeks ago so don't think that will be a problem. Will check tho.

[Ramzi89]

I'm using g++ 4.6. Should that make a difference? All i want to do is make a const array of string that a class can use. How else could I initialize the array cos the compiler is still throwing out errors?

/tmp/ccWbqy0Y.o: In function `Painting::display()':
qu7.cpp:(.text+0x103): undefined reference to `Item::mediumar'
collect2: ld returned 1 exit status

[coder777]

put mediumar outside Item (maybe in anamespace).

You don't need static

[Ramzi89]

What if I only want the Item class to access it? and I want to share the array among the item class?

I only say this because the exercise i'm trying to do requires this,

[JLBorges]

// header file item.h
class item
{
    protected:
        std::string sellername;
        int price;
        static const std::string mediumar [] ;
    public:
        item( std::string sellername1, int price1);
        virtual ~item() {} // *** added
        virtual void display() const = 0 ; // *** const added
};

// implementation file item.cc (.cpp,.cxx)
const std::string item::mediumar []  = {"Oils","Watercolour", "Other"} ;