#include <iostream>
using namespace std;

class Calendar {
public:
    const int months = 12;
    static const int daysInWeek = 12;
}; 

Calendar calendar;
int months = calendar.months;
//months is 12

int daysInWeek = Calendar::daysInWeek;
//daysInWeek is 7

cout << "months is " << months << endl;
cout << "daysInWeek is " << daysInWeek;