运行出错 帮忙修改一下using System;using System.Collections.Generic;using System.Text;namespace ConsoleApplication1{ class Program { static void Main(string[] args) { Console.WriteLine("请输入年龄"); string age = Console.ReadLine(); string mystr; switch (age) { case 10: mystr = "你是小孩"; break; case 20: mystr = "你可以结婚了"; break; default: mystr = "输入错误"; break; } Console.WriteLine("{0}",mystr); } }} 

case "10": mystr = "你是小孩"; break; case "20": mystr = "你可以结婚了"; break;