namespace 作業(yè)2
{
class Program
{
static void Main(string[] args)
{
/**

• 請(qǐng)用戶輸年份,再輸入月份,輸出該月的天數(shù).

• */
  Console.WriteLine("請(qǐng)輸入一個(gè)年份");
  int year = Convert.ToInt32(Console.ReadLine());
  Console.WriteLine("請(qǐng)輸入一個(gè)月份");
  int month = Convert.ToInt32(Console.ReadLine());
  if (month >= 1 && month <= 12)
  {
  int day = 0;//存儲(chǔ)天數(shù)
  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("月份必須在1~12月之間，程序退出?。。?);

    }
    Console.ReadKey();
  

  }

}
}

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