using System;

public class Program

{

    public static void Main()

    {

        int var1 = 0;

        int var2 = var1++;      

        Console.WriteLine("var1 = "+ var1 + ", var2 = "+ var2);

        int var3 = 2;

        var3 += var2;

        Console.WriteLine("var3 = "+ var3 += var2);

    }

}