oop - About C# and Inheritance -

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I have a theoretical / authentic question how the legacy works in C #.

We say that I have a model for some auto, so I have some common methods that all auto should be applied and a pilot should know. In code-words it should be an interface: 

  interface automobile {void speedup (); Zero break (); Zero carrier (); Now, all types of cars should have some general technical implementation, which a pilot can work on them, let's get the property fuel level at this point, this point. But I still do not want to know how a car rises or breaks, so I must have written:  
  abstract class car: automobile {int fuel level; // for example .... public abstract zero speed (); Public essence zero segment (); Public essence void (); }   
 Now I want to model Ferrari, therefore:  
  class Ferrari: car {public zero speed () {...} public zero Break () {...} public void steer () {...}}   
 Now, this code should work in Java (changing some syntax), but not in C # It will say:  
  Error 1 'Ferrari' inherited intangible member 'Car.speedup ()' does not apply 'Error 1' Ferrari 'inherited member' car. Brake '(error) 1' Ferrari 'inherited intangible member does not apply to' Car.steer () '  
 Why? How should I fix this problem?   
 
 
 You covered  override  below the  abstracts  definitions Public override void break () {} Public override steer () {}}   Pre> 
 In addition, you are setting -  Ferrari  class will satisfy your interface, even if methods are to be derived. In addition, naming in C # is slightly different:  
     
  •  Prefix interface with  I ,  IAutomobile .  
  •  Caption capital on methods:  speedp () ,  break () ,  steer () .

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