C$++$ problem, need help with creating $2$ functions.

FUNCTION $1$:

$//$create INITIAL huffman "tree"

$//$put the $26$ letters and their fequencies $($from counters$)$

$//$into the huffman tree, which is just an STL list.

void huffman$\_$enc::setList$()$

$\{$

$\}$

FUNCTION $2$:

$//$ initial "tree" has been created $($from setList$()),$

$//$create the huffman treeS

$//$upon completion THE huffman tree is built.

void huffman$\_$enc::makeTrees$()$

$\{$

$\}$

Files that are provided are:

#include

#include

#include

#include

#include

using namespace std;

#ifndef HUFFMAN$\_$ENC$\_$H$\_\_$

#define HUFFMAN$\_$ENC$\_$H$\_\_$

const int howmany $=26$;$//26$ letters of alphabet

struct info

$\{$

char letter;

int weight;$//$holds frequency of each letter in message

info $*$ llink, $*$rlink;

bool operator $<($info & n$)$

$\{$

return weight $<$ n$.$weight;

$\}$

$\}$;

$//$a huffman$\_$enc tree is just a STL list

$//$in other words, a huffman tree is just a linked list

class huffman$\_$enc : protected list

$\{$

public:

void getfile$()$;

void setList$()$;

void makeTrees$()$;

void showTrees$()$;

void encode$()$;

private :

int counters$[26]$;$//$array to hold weights$/$frequencies of each letter

void inorder$($ofstream &$,$info $*,$int &$)$;$//$helper function to read tree,determine code

list code;$//$list to temporarily store the binary code for an individual letter

char text$\_$filename$[60]$;$//$name of file containing the message to be encoded

char code$\_$filename$[60]$;$//$name of file containing the huffman code of each letter

$\}$;

#endif