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date.cpp
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date.cpp
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#include <iostream>
#include <stdexcept>
namespace Months
{
enum Month
{
jan = 1, feb,mar,apr,may,jun,jul,aug,sep,oct,nov,dec
};
Month& operator++(Month& m)
{
m = (m==dec)?jan:Month(m+1);
return m;
}
bool operator< (Enum ee) const;
bool operator<= (Enum ee) const;
bool operator> (Enum ee) const;
bool operator>= (Enum ee) const;
bool operator== (const Enum ee) const;
bool operator!= (const Enum ee) const;
}
class Date
{
public:
Date(int y,Months::Month m,int d);
void add_day(int n);
int year() { return y; }
Months::Month month() { return m; }
int day() { return d; }
private:
int y;
Months::Month m;
int d;
};
Date::Date(int yy,Month mm, int dd)
:y(yy),m(mm),d(dd)
{
if(m <=0 || m > 12)
{
throw std::runtime_error("month must be between 1 and 12");
}
if(d > 31 || d <= 0)
{
throw std::runtime_error("day must be greater than 0 and less than or equal to 31");
}
if(y < 0)
{
throw std::runtime_error("year must be greater than 0");
}
}
// void Date::add_day(int n)
// {
// switch(m)
// {
// case jan:
// case mar:
// case may:
// case jul:
// case aug:
// case oct:
// case dec:
// break;
// case apr:
// case jun:
// case sep:
// case nov:
// break;
// case feb:
// break;
// default:
// throw std::runtime_error("unrecognized month");
// }
// }
int main()
{
// Date today(1978,Date::Month(1),31);
// std::cout << "Year: " << today.year() << " Month: " << today.month()
// << " Day: " << today.day() << '\n';
// today.add_day(20);
// std::cout << "Year: " << today.year() << " Month: " << today.month()
// << " Day: " << today.day() << '\n';
return 0;
}