scc

 1int _daysmon[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
 2
 3int
 4_daysyear(int year)
 5{
 6	if (year%4 != 0)
 7		return 365;
 8	if (year%100 == 0 && year%400 != 0)
 9		return 365;
10	return 366;
11}