#include"Stack.h"
stack::stack() {
	top = -1;
	arr[NUM]=NULL;
}
void stack::setTop(int top) {
	this->top = top;
}
int stack::getTop() const {
	return this->top;
}
int stack::checkTop() const {
	return arr[getTop()];
}
bool stack::empty() const {
	return (top == 0);
}
void stack::push(int element) {
	setTop(getTop()+1);
	arr[getTop()] = element;
}