using System;
using System.Collections.Generic;
using System.Linq; using System.Text;
//2014.3.14
namespace _6.异常
{
    class Program
    {
        static void Main(string[] args)
        {
            try
            {
                Console.WriteLine("Convert之前");
                int a = Convert.ToInt32(Console.ReadLine());
                Console.WriteLine("Convert之后");
            }
            catch (Exception ex)
            {
                Console.WriteLine("输入错误："+ex.Message+"异常堆栈："+ex.StackTrace);
            }

            try
            {
                Console.WriteLine("请输入你的年龄：");
                int s = Convert.ToInt32(Console.ReadLine());
                string desc = GetAgeDesc(s);
                Console.WriteLine(desc);
            }
            catch (Exception ex)
            {
                Console.WriteLine("数据错误，"+ex.Message);
            }
             Console.ReadKey();
        }

        static string GetAgeDesc(int age)
        {
            if (age >= 0 && age 3 && age < 18)
            {
                return "青少年";
            }
            else if (age >=18 && age < 60)
            {
                return "成年人";
            }
            else if (age >= 60 && age < 100)
            {
                return "老年人";
            }
            else
            {
                throw new Exception("自己创建的ex.Message");
            }
        }
    }
}