C/C++ :: Zip And Unzip Files Using Huffman Encoding

I am writing a program to zip and unzip files using Huffman Encoding. I have successfully Built my Huffman Tree but I am unable to traverse through it to retrieve code the code for each character in sample files using the GetCode() method.

Here is my zip.cpp file:

#include <iostream>
#include <fstream>
#include <algorithm>
#include <cctype>
#include "huffman.h"
using namespace std;
void CountLetters(int frequency[]);
int main(int argc, char *argv[]) {

[Code] ....

Specifically I am having trouble with the following segment in zip.cpp where I want to go through my built tree and print out each character and it's associated ascii value using the GetCode() method in huffman.cpp

cout << " Here are the codes: "<< endl;
for(char ch = char(0); ch <= char(255); ch++)
//for(int i= 1; i < 256; i++ )
{ //int x = (char) i;
if(mytree.inTree('*'))

[Code] ....