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

int main()
{
	int i = 10;               int *const p = &i;         int& r = i;

	i = 20;                   *p = 20;                   r = 20;
	++i;                      ++*p;                      ++r;

	cout << i << "\n";        cout << *p << "\n";        cout << r << "\n";
	cout << &i << "\n";       cout << p << "\n";         cout << &r << "\n";
	cout << sizeof i << "\n"; cout << sizeof *p << "\n"; cout << sizeof r << "\n";

	return EXIT_SUCCESS;
}