#ifndef STACK_H
#define STACK_H

class Stack {
    private:
        int *array;         // use a pointer so the size can vary
        int ptr;            // the first 'empty' cell in the array
        int size;           // size of array / # of items stack holds
    
    public:
        Stack();            // default constructor
        Stack(int s);       // constructor with size parameter
        ~Stack();           // destructor - added after class but very important
        int push (int item);    // push item onto stack. return 1 if it worked
                                // or 0 if something went wrong
        int pop(int & item);    // pop item off stack. Value ends up in item,
                                // return 0 if stack empty, otherwise 1
};

#endif