On Aug 25, 2:35 pm, David Colque <d_col... / yahoo.es> wrote:
> LIKE ACCEDING TO THE METHOD " setSpeed" OF THE SUPERCLASS "Airplane".
> Thak you
>
> Attachments:http://www.ruby-forum.com/attachment/2606/prueba1.rb
>
> --
> Posted viahttp://www.ruby-forum.com/.

Hi David,

Your access to Airplane::setSpeed is working.

On line 55, you create an Airplane::Jet instance with @speed=0
On line 56, you invoke that setSpeed on the instance with argument 422
	so the method on line 38 is called with 422
	which in turn invokes Airplane::setSpeed with the argument
422*Multiplier, of 844,
	which is then set in @speed of the Airplane::Jet instance
On line 57, you print out the 844

Then on line 57, you invoke

Line 56 set the Jet's speed to 0
Line 57 with argument 422 set the Jet's speed to 422*Multiplier, or
844 and printed it

Line 60 invoked accelerate, which in turn invoked
Line 45 setSpeed(getSpeed()*2)
	getSpeed returned your 844, which then got doubled to 1688
	which was used as the argument to setSpped, which applied the
Multiplier
	so the speed was set to 3376
Line 61 used getSpeed to retrieve the 3376, which then got printed.

All this is confirmed by lines 2 and 2 of your output.

HTH,
Richard