string not included error

Code:

---

#ifndef LINES_H_INCLUDED
#define LINES_H_INCLUDED
#include <string>


/** @file Lines.h */

typedef string ListItemType;
/** class Lines*/

class Lines
{
    private:

    /** A node in the list*/
    struct Node
    {
        ListItemType item;

        Node *next;

        int lines;
    };
    Node *head;

    public:

    /** Default Constructor*/
    Lines();

    /** Copy Constructor*
    * @param line = The list to copy*/
    Lines(const Lines& line);

    /** Destructor */
    ~Lines();

    //List operations
    void insert(int index, const ListItemType& newItem);
    void remove(int index);
    void copy(int index, ListItemType& dataItem) const;
    void cut(int index,ListItemType& dataItem);




};






#endif // LINES_H_INCLUDED

---

This is the header file for a link list, when i try to compile this, it produces an error stating "string is not included"
when i change the string to => typedef char ListItemType
there's no problem...

In an h file, you need to fully quality it as std::string.

or specify namespace std, but Lindley's way is prefered

Quote:

---

Originally Posted by ninja9578

or specify namespace std, but Lindley's way is prefered

---

It's not a good idea to specify a "using" statement in a header file (at least, in an unrestricted scope) because that defeats the purpose of namespaces.

Hense why I said your way is preferred, but you can.

I figured that, but I wanted the reason for it on the record.