2018-11-07作业2

Console.WriteLine("请输入一个年份"); int year = Convert.ToInt32(Console.ReadLine()); Console.WriteLine("请输入一个月份"); int month = Convert.ToInt32(Console.ReadLine()); if (month >= 1 && month <= 12) { int day = 0;//存储天数 switch (month) { case 1: case 3: case 5: case 7: case 8: case 10: case 12: day = 31; break; case 2: if ((year % 400 == 0) || (year % 4 == 0 && year % 100 != 0)) { day = 29; } else { day = 28; } break; default: day = 30; break; }//swich Console.WriteLine("{0}年{1}月有{2}天", year, month, day); }//if else { Console.WriteLine("月份必须在1~12月之间，程序退出！！！");