usage of instance, class and reference variables in C#.Net

Usage of instance,class and reference variables in C#.Net

The following example demonstrate the usage of instance , class and reference variables.

using System;

class Dept

{

       int deptno;

       public void setDeptNo(int dno) {deptno=dno;}

}

class Employees

{    

       int empno;            //Instance variable

       static int total_emp;             //Class variable

       Dept dept;            //Reference variable

       public void setInfo(int eno,int dno)       //Instance function

       {

              empno=eno;

              dept=new Dept();

              dept.setDeptNo(dno);

              total_emp++;

       }

       public static int getTotal()     //Class Function

       {  return total_emp;      }

}

public class Class1

{

       public static void Main(string [] args)

       {

              Employees e1=new Employees();

              e1.setInfo(101 ,10);

              Employees e2=new Employees();

              e2.setInfo(102, 20);

              Console.WriteLine(Employees.getTotal());

              Console.Read();

       }

}