#include <string>
#include <iostream>
#include <conio.h>
#include <dos.h>

using namespace std;

class huffman
{
private:
	typedef struct
	{
		char elem;
		int weight,parent,lchild,rchild;
	}hfnode,*hftree;
	hftree hft;
	int n;
	bool selectmin(int m,int &lc,int &rc);
	bool readdate();
	bool readhfm(string filename);
	bool writehfm(string filename);
public:
	huffman();
	bool creathuffmantree();
	bool creathuffmantree(string filename);
	~huffman();
	bool encoding(string filename);
	bool decoding(string filename);
};

bool fileprint(string filename);