C # Basic article/Face test

First, value type and reference type

public static void Main (string[] args)        {            int = 10;//value type an area in memory that holds            an object age1 = age;//The reference type has an address at this point to age The initial address of the            age + = 1;//age re-opens the new area at this time for one,            Console.WriteLine ("fist=" +age1);//point to the old area value is ten;            int age2= (int) age1;/ /reference type conversion value type is ten;            Console.WriteLine ("test=" +age2);            Age2 + = 1;            Console.WriteLine ("Secend=" +age);            Console.readkey ();        }

Output Results 10 10 11

Second, the successor rewrite

public class program    {public        static void Main (string[] args)        {            Employee Yee = new Employee ();            Console.readkey ();        }    }    Class person    {        protected int: age = ten;        Public person ()        {this            . Output ();        }        public virtual void Output ()        {            Console.WriteLine (' Person ' +this.age);        }    }    Class Employee:person    {public        Employee (): Base ()        {            base.age =;        }        public override void Output ()        {            Console.WriteLine ("Employee" +base.age);        }    }

Output Results 10

C # Basic article/Face test