///////////////////////////////////////////////////////////////
main.cpp
///////////////////////////////////////////////////////////////


#include <cstdlib>
#include <iostream>
#include "stackClass_integer.h"

using namespace std;

int main(int argc, char *argv[])
{
    stackClass_integer newStack(5);
    newStack.pushInt(3);
    newStack.pushInt(4);
    cout << newStack.popInt() << endl;
    newStack.pushInt(7);
    newStack.pushInt(5);
    cout << newStack.popInt() << endl;
    cout << newStack.popInt() << endl;
    cout << newStack.popInt() << endl;
    cout << newStack.popInt() << endl;

    system("PAUSE");
    return EXIT_SUCCESS;
}




///////////////////////////////////////////////////////////////
stackClass_Integer.h
///////////////////////////////////////////////////////////////

#pragma once
#include <iostream>
#include <stdio.h>
#include <stdlib.h>

class stackClass_integer
{
      private:
          int numInStack, sizeOfStack, ptrPosition;
          int * stackPtr;
      public:
          stackClass_integer(int numInts);
          void pushInt(int inputValue);
          int popInt();
          ~stackClass_integer(void);
};


///////////////////////////////////////////////////////////////
stackClass_Integer.cpp
///////////////////////////////////////////////////////////////

#include "stackClass_integer.h"

stackClass_integer::stackClass_integer(int numInts)
{
    numInStack = numInts;
    sizeOfStack = sizeof(int) * numInStack;
    stackPtr = (int*) calloc(numInStack,sizeOfStack);
    ptrPosition = 0;
};

void stackClass_integer::pushInt(int inputValue)
{
    if(ptrPosition < numInStack)
    {
        std::cout << "PUSH: ptrPosition #" << ++ptrPosition << " now = "<<inputValue<<std::endl;
        * ++stackPtr = inputValue;
    }
};

int stackClass_integer::popInt()
{
    if(ptrPosition > 0)
    {
        int result = * stackPtr--;
        std::cout << "POP: ptrPosition #" << ptrPosition-- << ": ";
        return result;
    }
    return -1;
};

stackClass_integer::~stackClass_integer(void)
{
};