2018-11-07

请用户输年份,再输入月份,输出该月的天数.

int day = 0;
switch (mon)
{
       case 1:
       case 3:
       case 5:
       case 7:
       case 8:
       case 10:
       case 12: day = 31;
       break;
       case 2:
            if (year % 4 == 0)
            {
                day = 29;
            }
            else
            {
                day = 28;
             }
            break;
            default:
                day=30;
            break;
}
   Console.WriteLine("{0}年的{1}月有{2}天", year, mon, day);
   Console.ReadKey();