#ifndef __STACK_HPP__
#define __STACK_HPP__

const int stack_size = 10;

class Stack
{
protected:
	int top;
	int data[stack_size];

public:
	Stack() { top = -1; }
	bool isEmpty() { return (top == -1); }
	bool isFull() { return (top == stack_size - 1); }

	void push(int elem);
	int pop();
};

void Stack::push(int elem)
{
	if (isFull())
	{
		throw StackOverflowError("push", __FILE__, __LINE__);
	}
	data[top + 1] = elem;
	top++;
}

int Stack::pop()
{
	if (isEmpty())
	{
		throw StackUnderflowError(__FUNCTION__, __FILE__, __LINE__);
	}

	int rlt = data[top];
	top--;
	return rlt;
}


#endif