//////////////////////////////  nodedata.h  //////////////////////////////////
// Simple node data containing one integer and one character
#ifndef NODEDATA_H
#define NODEDATA_H

#include <iostream>
#include <fstream>
using namespace std;

//---------------------------  class NodeData  ------------------------------
class NodeData {                                 // incomplete class
   friend ostream& operator<<(ostream &, const NodeData &);

public:
   NodeData(int n = 0, char c = 'a');       // default constructor
   bool setData();                          // sets data by prompting user
   bool setData(ifstream&);                 // reads data from file

   // <, > are defined by order of num; if nums are equal, ch is compared
   bool operator<(const NodeData& N) const;      
   bool operator>(const NodeData& N) const;
   bool operator==(const NodeData& N) const;
   bool operator!=(const NodeData& N) const;

   // other operators: >=, <=, ==, != are left to the reader

private:
   int num;
   char ch;
};

#endif