using System;

public class Program

{

    public static void Main()

    {

        int a = 4, b, c;

        Console.WriteLine("the value of a is : {0}", a);

        b = a++;

        Console.WriteLine("the value of b is : {0}", b);

        c = ++a;

        Console.WriteLine("the value of c is : {0}", c);

    }

}