bug in my queue system

[evildotaing]

main.cpp

#include <iostream>
#include <string>
#include "Queue.h"
 
using namespace std;
 
void main(void)
{
	int index = 0;
	bool menu = false;
    int mySize; //the amount of queue for the clinic
    int number;
    string name;
    int Id;
    cout << "Enter the queue you want for the maximum for the clinic: " ;
    cin >> mySize;
    cout << endl;
    while (mySize <= 0)
    {
        cout << "Please enter number greater than 0: " ;
        cin >> mySize;
        cout << endl;
    }
    Queue * theQueue = new Queue(mySize);
    system ("cls");
	while (!menu)
	{
		cout << "Welcome to my Clinic queuing system!" << endl;
		cout << "-Press <1> to get a queue number" << endl;
		cout << "-Press <2> to get the first patient in the queue" << endl;
		cout << "-Press <3> to print all in the queue" << endl;
		cout << "-Press <4> to exit from this program" << endl;
		cin >> number;
		while (number <= 0 || number > 4)
		{
			cout << "Wrong input! Enter again: ";
			cin >> number;
		}
		 
			if (number == 1)
			{
				
				system ("cls");
				
				cout << "Welcome to my Clinic queuing system!" << endl;
				cout << "Enter your name: " ;
				cin >> name;
				cout << "Enter your ID: ";
				cin >> Id;
				theQueue ->addQueue( Id);
				index++;
				
				
				
		     }

			else if (number == 2)
			{
				theQueue->removeQueue();
			}

			else if (number == 3)
			{
				theQueue->RemovePrintQueueNumber();
			}
	}
    system ("pause");
}

Queue.h

#ifndef QUEUE_H_
#define QUEUE_H_
 
#include <string>
using namespace std;
class Queue
{
public:
    bool IsEmptyQueue(void) const;
    bool IsFullQueue(void) const;
    void initializeQueue(void);
    int Myfront(void) const;
    int Myback(void) const;
    void addQueue( int &);
	//void addQueues(string);
    void removeQueue();
    Queue(int);
    ~Queue(void);
    void PrintNumber(void);
    void PrintQueueNumber(void);
	void RemovePrintQueueNumber(void);
private:
    int maxQueuesize;
    int count;
    int front;
    int back;
    int * list;
	string * sentence;
	string name;
};
#endif

queue.cpp

#include "Queue.h"
#include <cstdlib>
#include <iostream>
#include <string>
 
using namespace std;
 
bool Queue::IsEmptyQueue(void) const
{
    return (count == 0);
}
 
bool Queue::IsFullQueue(void) const
{
    return (count == maxQueuesize);
}
 
void Queue::initializeQueue(void)
{
    front = 0;
    back = maxQueuesize - 1;
    count = 0;
}
 
int Queue::Myfront(void) const
{
    if (!IsEmptyQueue())
    {
        return list[front];
    }
  
}
 
int Queue::Myback(void) const
{
    if (!IsFullQueue())
    {
        return list[back];
    }
   
}
 
 
void Queue::addQueue( int & element)
{
    if (!IsFullQueue())
    {
        back = (back + 1) % maxQueuesize;
        count++;
        list[back] = element;
		cout << "Your queue number is " << back + 1 << endl;
		
	}
 
    else
    {
        cout << "Unable to add a full queue: " << endl;
    }
}
 
void Queue::removeQueue()
{
    if (!IsEmptyQueue())
    {
		
        count --;
        front = (front + 1) % maxQueuesize;
		
		cout << "Your queue number to be remove is " << front   << endl;
		
		
		
		
    }
    else
    {
		cout << "There are no patients in the queue! " << endl;
		system ("pause");
    }
}
 
Queue::Queue(int size)
{
    if (size <= 0)
    {
        cout << "Size must be positive." << endl;
        cout << "An array of size 5 is created for you." << endl;
        maxQueuesize = 5;
    }
    else
    {
        maxQueuesize = size;
    }
 
    front = 0;
    back = maxQueuesize - 1;
    count = 0;
    list = new int[maxQueuesize];
 
}
 
Queue::~Queue(void)
{
    delete[]  list;
}
 
void Queue::PrintNumber(void)
{
    for (int i = 0; i < maxQueuesize; i ++)
    {
        cout << i << "\t:\t" << list[i] << endl;
    }
}
 
void Queue::PrintQueueNumber(void)
{
    //cout << "Your queue number is " << back + 1 << endl;
    //cout << "Your queue number is " << back << endl;
}

void Queue::RemovePrintQueueNumber(void)
{
	//cout << "Your queue number to be remove is " << front << endl;
}

When i try to remove the list from the array, there are no problem until the last array where I want to remove, why is it that when i print
in the removeQueue() function, it always print 0 instead of the max number itself .
Example with 2 arrays

To remove:
Your queue number to be remove is << 1 << endl;
Your queue number to be remove is << 0 << endl; //instead of 0

[evildotaing]

ignore both PrintQueueNumber or RemovePrintQueueNumber, assignment halfway complete