/* Implementation of the DoubleStack class. */

#include "DoubleStack.hh"

#include <cassert>

// Default constructor
DoubleStack::DoubleStack() 
{
	topIndex = -1;
}

bool DoubleStack::isEmpty() 
{
	if (topIndex == -1) {
		return true;
	} else {
		return false;
	}
}

bool DoubleStack::isFull() 
{
	if (topIndex == MAX_SIZE-1) {
		return true;
	} else {
		return false;
	}
}

void DoubleStack::popAll()
{
	topIndex = -1;
}

void DoubleStack::push(double x) 
{
	topIndex++;
	data[topIndex] = x;
}

double DoubleStack::top() 
{
	// Modify code here
	return 0;
}

void DoubleStack::pop() 
{
	// Modify code here
}