#ifndef STACK_INTH
#define STACK_INTH
#include <cstddef>   //for size_t

class stack_int {
public:
	typedef int value_type;
private:
	static const size_t max_size = 100;
	value_type a[max_size];
	size_t n;   //stack pointer: subscript of next free element
public:
	stack_int(): n(0) {}
	~stack_int();

	void push(value_type i);
	value_type pop();

	friend bool operator==(const stack_int& s1, const stack_int& s2);
};

inline bool operator!=(const stack_int& s1, const stack_int& s2) {
	return !(s1 == s2);   //return !operator==(s1, s2);
}
#endif