03.if 和 switch結合練習

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namespace _04.練習01
{
    class Program
    {
        static void Main(string[] args)
        {
            //請使用者輸入年份,再輸入月份,輸出該月有多少天
            Console.WriteLine("請輸入年份:");
            int year =Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("請輸入月份:");
            int month = Convert.ToInt32(Console.ReadLine());
            
                switch (month)
                {
                    case 1:
                    case 3:
                    case 5:
                    case 7:
                    case 8:
                    case 10:
                    case 12:
                        Console.WriteLine("該月有31天!");
                        break;
                    case 4:
                    case 6:
                    case 9:
                    case 11:
                        Console.WriteLine("該月有30天!");
                        break;
                    case 2:
                    if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0)
                    {
                        Console.WriteLine("該月有29天.");
                    }
                    else
                    {
                        Console.WriteLine("該月有28天.");
                    }
                        break;
                }
            Console.ReadKey();
        }
    }
}

來自為知筆記(Wiz)

03.if 和 switch結合練習