reading doubly linked list n position - linked-list

Question

My doubly linked list contains abc...z. which was read from first file..
My second file contains int 4,10,8,-3.
based on my second file I am suppose do display abc..z on the screen..
4 -> I am going forward till D then 10 -> more till N, then so on..
How can I do that? please any help..
anyhlep would be really appriciated..
#include <iostream>
#include <fstream>
using namespace std;
class Myclass{
public:
void putItem(char cha);
void printItme();
void getIndex(int);
Myclass();
private:
struct Node
{
char aplBat;
Node *next;
Node *prev;
};
Node *head;
int potionIndex = 0;
};
int main(){
ifstream inputFile, inputInt;
Myclass obj;
string stringInt;
double valData = 0;
int total = 0;
char charData;
/*my first file with alpa */
inputFile.open("Letters.txt");
if(inputFile.good())
{
while(inputFile >> charData)
{
obj.putItem(charData);
}
}
else
cout << "Error " << endl;
inputFile.close();
//From right here.. I am reading data from file Sequence, 3,5,-2,10,-5
inputInt.open("Sequence.txt");
if(inputInt.good())
{
while(getline(inputInt, stringInt, ',')){
valData = atof(stringInt.c_str());
total += valData;
obj.getIndex(total);
}
//cout << "Total " << total << endl;
cout << "FIle ok " << endl;
obj.printItme();
}
else
cout << "Error " << endl;
inputInt.close();
cout << endl;
return 0;
}
void Myclass::putItem(char cha){
Node *newNode;
newNode = new Node;
newNode->aplBat = cha;
newNode->prev = nullptr;
newNode->next = nullptr;
if(!head)
{
head = newNode;
}
else
{
head->prev = newNode;
newNode->next = head;
head = newNode;
}
}
void Myclass::printItme()
{
Node *temp = head;
if(temp == nullptr)
{
cout << "Empty List " << endl;
}
while(temp->next != nullptr)
{
temp = temp->next;
}
while(temp->prev != nullptr)
{
cout << temp->aplBat << " ";
temp = temp->prev;
}
cout << "Repitation " << potionIndex << endl;
}
Myclass::Myclass()
{
head = nullptr;
}
void Myclass::getIndex(int val)
{
potionIndex = val;
}