ex10

#include <iostream>

using namespace std;

template <class T>
class Array{
    T * tab;
    int rozmiar;
public:
    Array() : tab(NULL), rozmiar(0) {}
    ~Array();
    void pushBack(T const &);
    bool reserve(int);
    T & operator[](unsigned) const;
    int getSize() const;
    void show();
};

template <class T>
Array<T>::~Array(){
    delete [] tab;
}

template <class T>
void Array<T>::pushBack(T const & t){
    reserve(rozmiar + 1);
    tab[rozmiar - 1] = t;
}

template <class T>
bool Array<T>::reserve(int size){
    if (size > rozmiar){
        T * newTab = new T[size];
    for (int i = 0 ; i < rozmiar; ++i)
        newTab[i] = tab[i];
    delete [] tab;
    tab = newTab;
    rozmiar = size;
    return true;
    } else
    return false;
}

template <class T>
T & Array<T>::operator[](unsigned i)const{
    return tab[i-1];
}

template <class T>
int Array<T>::getSize(void) const{
    return rozmiar;
}

template <class T>
void Array<T>::show(){
    for (int i = 0; i < rozmiar; i++){
        cout << tab[i] << " ";
    }
    cout << endl;
}


int main(){
    Array <int> t1;
    t1.pushBack(2);
    t1.pushBack(5);
    t1.show();
    int x = t1.getSize();
    cout << "Rozmiar tablicy: " << x << endl;
    cout << t1[2] << endl;
}