C#的四种访问修饰符：

public

private

internal

protected：只有继承他的才能访问、

 

1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5  6 namespace Test 7 { 8     //enum枚举类型 9     enum days {Monday=1 ,Tuesday ,Wenesday, Thursday, Friday, Saturday ,Sunday };10     //强制转换为byte字节11     //enum days :byte { Monday = 1, Tuesday, Wenesday, Thursday, Friday, Saturday, Sunday };12     class Program13     {14         /// 
15         /// 16         /// 
17         /// 18         static void Main(string[] args)19         {20             int intValue = 1;21             int intValue2 = new int();22 23             bool a = true; //System.bool24             Boolean b = true; //System.Boolean25             Console.WriteLine("{0},{1}",a, b); //输出a，b26 27             Person person = new Person();28             person.age = 10;29             Console.WriteLine(person.age);30 31             var c = days.Monday;32             Console.WriteLine((int) c);   //输出c并强制转换为int类型33             //Console.WriteLine(days.Monday);34             Console.Read();35 36   37         }38 39         //struct类型：是来用打包和封装一个小的数据集40         struct Person41             {42                 public int age;43                 public string name;44                 public string name1;45 46             }47     }48 }