C#中有关字段的访问控制

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using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace fieldDemo{    class Employee {        public readonly int id;        public string name;        public int age = 20;        public const int minAge = 18;        public static string company;        public void display()        {            Console.WriteLine("name:{0}, age:{1}, company:{2}",name,age,company);        }    }    class Program    {        static void Main(string[] args)        {            Employee.company = "ldu";            Employee emp1 = new Employee();            emp1.name = "zxf";            emp1.age = 25;            if (emp1.age < Employee.minAge)                Console.WriteLine("不符合要求");            else                Console.WriteLine("name:{0}, age:{1}, company:{2}",emp1.name,emp1.age, Employee.company);            Employee emp2 = new Employee();            emp2.display();            Console.ReadLine();        }    }}

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