分析如下C# 代码,根据类的继承关系,运行后的输出结果是___ public class Person { private int age=0; public int Age { get{return age;} set { If(value>=18) Console.WriteLine(“成年人”); Else Console.WrteLine(“未成年人”); } } } public class People:Person { public People() { Console.Write(“不得入内”); } } class Test { static void Main (string[]args) { people shang=new People(); shang.Age=17 } }