// File: WordList.h
// Abstract base class for containers of word data
// Known subclasses:
//      WordDataList
// Coming soon: ParallelArrayWordList, WordVectorList, ...

#ifndef WORDLIST_H
#define WORDLIST_H

#include <fstream>
#include <string>

using namespace std;

class WordList {
public:

  // Place the line of text into the data structure
  virtual void parseIntoList(ifstream &inf)=0;

  // Print the data iteratively
  virtual void printIteratively()=0;
  
  // Print the data recursively
  virtual void printRecursively()=0;
  
  // Print the data recursively with a pointer
  virtual void printPtr() {}   // not pure virtual; why?
    
};
  
#endif