#ifndef MYSTRINGH
#define MYSTRINGH
#include <iostream>   //for ostream and <<
#include <cstddef>    //for size_t
#include <cstdlib>    //for free
using namespace std;

class mystring {
	size_t n;   //number of characters, not counting the terminating '\0'
	char *p;    //pointer to the 1st character; must be constructed after n
public:
	mystring(const mystring& another);   //the copy constructor
	mystring(const char *s = "");
	~mystring() {free(p);}

	mystring& operator=(const mystring& another);
	mystring& operator=(const char *s);

	char& operator[](size_t i);
	const char& operator[](size_t i) const;

	void print() const {cout << p;}

	friend ostream& operator<<(ostream& ost, const mystring& m) {
		return ost << m.p;
	}
};
#endif