using System;

class MyClass {

   static void Main() {
      object o = null;
      object p = null;
      object q = new Object();

      Console.WriteLine(Object.ReferenceEquals(o, p));
      p = q;
      Console.WriteLine(Object.ReferenceEquals(p, q));
      Console.WriteLine(Object.ReferenceEquals(o, p));
   }
}


/*

This code produces the following output.

True
True
False

*/

using namespace System;
int main()
{
   Object^ o = nullptr;
   Object^ p = nullptr;
   Object^ q = gcnew Object;
   Console::WriteLine( Object::ReferenceEquals( o, p ) );
   p = q;
   Console::WriteLine( Object::ReferenceEquals( p, q ) );
   Console::WriteLine( Object::ReferenceEquals( o, p ) );
}

/*

This code produces the following output.

True
True
False

*/

import System.*;

class MyClass
{
    public static void main(String[] args)
    {
        Object o = null;
        Object p = null;
        Object q = new Object();

        Console.WriteLine(Object.ReferenceEquals(o, p));
        p = q;
        Console.WriteLine(Object.ReferenceEquals(p, q));
        Console.WriteLine(Object.ReferenceEquals(o, p));
    } //main
} //MyClass

/*

This code produces the following output.

True
True
False

*/

import System

class MyClass {

   static function Main() {
      var o = null;
      var p = null;
      var q = new Object();

      Console.WriteLine(Object.ReferenceEquals(o, p));
      p = q;
      Console.WriteLine(Object.ReferenceEquals(p, q));
      Console.WriteLine(Object.ReferenceEquals(o, p));
   }
}

MyClass.Main();

/*

This code produces the following output.

True
True
False

*/