Question

Swift programming language

Write a class Pet with two properties and two methods of your choice. Then write a subclass Cat which inherits from Pet. Cat should override at least one method from Pet, and should have at least one extra method and one extra property unique to Cat.

Answer 1

class Pet
{
   var Noise: String
   var color: String
  
   init(Noise: String, color: String)
   {
       print(" super class constructor")
       self.Noise = Noise
       self.color = color
   }
   func setNoise(Noise:String)
   {
   self.Noise=Noise
   }
  
   func display()
   {
      
       print("Noise = " + self.Noise)
       print("color = " + self.color)
   }
}

class Cat : Pet
{
   var legs: Int = 0
   convenience init(Noise: String, color: String,legs: Int)
   {
       self.init(Noise: Noise, color: color)
       self.legs = legs
   }
  
   override func display()
   {
       super.display()
       print("Number of legs = ", self.legs)
   }
   func printnoise()
   {
   print("Noise:"+super.Noise)
   }
}

var c1 = Cat(Noise: "MEW MEW",
                   color: "RED",
                   legs: 4)
c1.display()
c1.printnoise()