C#属性访问器

using System;
@R_502_6889@space yiibai {
   class Student {
      private string code = "N.A";
      private string @R_502_6889@ = "not kNown";
      private int age = 0;

      // Declare a Code property of type string:
      public string Code {
         get {
            return code;
         }
         set {
            code = value;
         }
      }

      // Declare a @R_502_6889@ property of type string:
      public string @R_502_6889@ {
         get {
            return @R_502_6889@;
         }
         set {
            @R_502_6889@ = value;
         }
      }

      // Declare a Age property of type int:
      public int Age {
         get {
            return age;
         }
         set {
            age = value;
         }
      }
      public overrIDe string ToString() {
         return "Code = " + Code +", @R_502_6889@ = " + @R_502_6889@ + ", Age = " + Age;
      }
   }

   class ExampleDemo {
      public static voID Main() {

         // Create a new Student object:
         Student s = new Student();

         // Setting code, @R_502_6889@ and the age of the student
         s.Code = "001";
         s.@R_502_6889@ = "Zara";
         s.Age = 9;
         Console.Writeline("Student Info: {0}", s);

         //let us increase age
         s.Age += 1;
         Console.Writeline("Student Info: {0}", s);
         Console.ReadKey();
      }
   }
}