#include "int_stack.h"
#include <stdio.h>

istack::istack(int capacity)
{
    values = new int[capacity];
    this->capacity = capacity;
    top = -1;
}

int istack::push(int value)
{
    return values[++top] = value;
}

int istack::pop()
{
    return values[top--];
}

bool istack::empty()
{
    return top < 0;
}

bool istack::full()
{
    return top >= capacity - 1;
}

/*
int main()
{
    int i;
    istack s1(5), s2(5);

    for (i = 0; !s1.full(); i++) {
	s1.push(2 * s2.push(i));
    }

    while (!s1.empty()) {
	printf("%d\n", s1.pop());
    }
    while (!s2.empty()) {
	printf("%d\n", s2.pop());
    }

    return 0;
}
*/