using System;

    class Test

    {

        public int a;

        public static int b;

        public static bool condition;

        public int count()

        {

            int i = 0;

            if((++i >= 1) || (condition == false))

                i++;

            if((i++ > 1) && (condition = true))

                i++;

            return i;

        }

        public static void printSomething()

        {

            Console.WriteLine("a = " + a);

            Console.WriteLine("b = " + b);

        }

    }

    class CTest

    {

        public static Test use(Test b1, Test b2)

        {

            Test b3 = b1;

            b1 = b2;

            return b3;

        }

        public static int count(Test b1, Test b2)

        {

            int a = b1.a + b2.a;

            a = a / 2;

            b2.a = a + 3;

            b1.a = a - 4;

            return (b1.a - b2.a) * a;           

        }

    }

​

public class Program

{

    public static void Main()

    {

        Test myTest = new Test();

        myTest.a = 3; myTest.b = 7;

        Test otherTest = new Test();

        otherTest.a = 1; otherTest.b += 5;      

        Console.WriteLine("Result_1: " + Test.count());

        Test.printSomething();

        Test t1 = new Test();

        Test t2 = new Test();

        Console.WriteLine("Result_2: " + (t1 == t2));

        t2 = Test.Use(t1, t2);

        Console.WriteLine(" " + (t1 == t2));        

        int x = Test.count(myTest, otherTest);

        x += myTest.a + otherTest.a;

        Console.WriteLine("Result_3: " + x);

    }

}