using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("請輸入兩個整數：");
            int a, b;
            double c = 0;
            try
            {

                a = int.Parse(Console.ReadLine());
                b = int.Parse(Console.ReadLine());
                c = a / b;

            }
            catch (FormatException)
            {
                Console.WriteLine("輸入格式不正確，請輸入一個整數");
                Console.ReadKey();
            }
            catch (DivideByZeroException)
            {
                Console.WriteLine("出書不能為0");
                Console.ReadKey();
            }
            if (c != 0)
            {

                Console.WriteLine(c);
                Console.ReadKey();
            }
        }
    }
}