#include <iostream>
#include <cstdlib>
using namespace std;

struct str {
	int f1;
	int f2;
};

int main()
{
	str s = {10, 20};         str *const p = &s;         str& r = s;

	s.f1 = 30;                p->f1 = 30;                r.f1 = 30;
	++s.f1;                   ++p->f1;                   ++r.f1;

	cout << s.f1 << "\n";     cout << p->f1 << "\n";     cout << r.f1 << "\n";

	cout << &s << "\n";       cout << p << "\n";         cout << &r << "\n";
	cout << &s.f1 << "\n";    cout << &p->f1 << "\n";    cout << &r.f1 << "\n";

	cout << sizeof s << "\n"; cout << sizeof *p << "\n"; cout << sizeof r << "\n";
	cout << sizeof s.f1<<"\n";cout << sizeof p->f1<<"\n";cout << sizeof r.f1<<"\n";

	return EXIT_SUCCESS;
}