Очередь через массив. - C++

//#include "stdafx.h"   //uncomment this line if you are using MSVS
#include <iostream>
using std::cout;
using std::cin;
using std::endl;
 
class Ochered {
public:
    Ochered(); //constructor
    ~Ochered(); //destructor
 
    void dobavit(int);
    void udalit_peryi();
    int pervyi();
    int razmer();
    void ochistit();
 
private:
    int count;
    int *array; //pointer to int.
};
 
Ochered::Ochered() :
        count(0) {
    array = new int[0];
}
 
void Ochered::dobavit(int val) {
    int *newArray = new int[count + 1];
    newArray[0] = val;
    for (int i = 1; i <= count; ++i) {
        newArray[i] = array[i - 1];
    }
    delete[] array;
    array = newArray;
    count++;
}
 
int Ochered::razmer() {
    return count;
}
 
int Ochered::pervyi() {
    return array[0];
}
 
void Ochered::udalit_peryi() {
    int *newArray = new int[count-1];
    for (int i = 0; i < count-1; ++i) {
        newArray[i] = array[i + 1];
    }
    delete[] array;
    array = newArray;
    count--;
}
 
void Ochered::ochistit(){
    int * newArray = new int[0];
    delete [] array;
    array = newArray;
    count = 0;
}
 
Ochered::~Ochered() {
    delete[] array;
}
 
int main() {
 
    Ochered o = Ochered();
 
        cout << "Size after initialising" << endl;
        cout << o.razmer() << endl;
 
        cout << "Size after adding first element" << endl;
        o.dobavit(2);
        cout << o.razmer() << endl;
 
        cout << "First element value" << endl;
        cout << o.pervyi() << endl;
 
        cout << "Size after adding second element" << endl;
        o.dobavit(4);
        cout << o.razmer() << endl;
 
        cout << "First element value" << endl;
        cout << o.pervyi() << endl;
 
        cout << "Size after after removing first element" << endl;
        o.udalit_peryi();
        cout << o.razmer() << endl;
 
        cout << "First element value" << endl;
        cout << o.pervyi() << endl;
 
        cout << "Size after queue truncating" << endl;
        o.ochistit();
        cout << o.razmer() << endl;
 
    cin.get();
    return 0;
}