Stack

#ifndef STACKADT_H
#define STACKADT_H
#include <Stack.h>
#include <stdlib.h>
#include <iostream>

using namespace std;
template <typename E>
class StackADT {
private:
    void operator =(const StackADT&) {}
    StackADT(const StackADT&) {}
    E *stack;
    int  top = 0;

public:
    StackADT() {
        stack = new int[2];
    }
    ~StackADT() {}

    void clear(){
        top = 0;
    }
    void push(const E& it){
        if(top < sizeof(stack)){
            stack[top] = it;
            top++;}
        else{
            stack = (int *) realloc( stack, 2*sizeof(int) );
            stack[top] = it;
            top++;

        }
    }
    E pop(){
        E top = stack[this->top - 1];
        this->top--;
        cout << "Pop de: " << top << endl;

        return 0;
    }
    const E& topValue(){
        return stack[top - 1];
    }
    int length(){
        return top;
    }

};


#endif // STACKADT_H