例外処理のメモ

namespace ConsoleApp1
{

    class MyException: Exception
    {
        public MyException(string msg): base(msg) { }
    }

    class Program
    {
        static void Div(int a, int b)
        {
            try
            {
                if (a == 0 | b == 0)
                {
                    throw new MyException("0除算です");
                }
                Console.WriteLine(a / b);
            }
            catch(MyException e)
            {
                Console.WriteLine(e.Message);
            }
            finally
            {
                Console.ReadLine();
            }  
        }

        static void Main(string[] args)
        {
            Div(10, 0);
        }
    }
}