OOP real time example - Traffic Signal

Question

Hello Everyone The question was asked me in interview. Explain the OOP with Traffic Signal (Real Time Example) answer should cover the AbstractionInheritancePolymorphismEncapsulation with C# code. Thanks in advance.

Rajeesh Menoth · Answer

Hi Already reddy is answered your question in stackoverflow with good example.Follow that link.. public abstract class TrafficLight { public bool IsTrafficAllowed { get; protected set;} public abstract void AllowTraffic(); public abstract void BlockTraffic(); } public class CarsTrafficLight : TrafficLight { public bool IsGreenLightOn {get; private set;} public bool IsOrangeLightOn {get; private set;} public bool IsRedLightOn {get; private set;} public override void AllowTraffic() { IsGreenLightOn = true; IsOrangeLightOn = false; IsRedLightOn = false; base.IsTrafficAllowed = true; } public override void BlockTraffic() { IsOrangeLightOn = true; Thread.Sleep(1000); IsGreenLightOn = false; IsRedLightOn = true base.IsTrafficAllowed = false; } } public class PedestriansTrafficLight : TrafficLight { //Does not have orange light and a sound is played in some countries } Reference : http://stackoverflow.com/questions/34695027/example-of-oop-design-for-a-traffic-signal-scenario The answer is helpful.Then please accept it ..!!