How to Use Class Inheritance

Steps

1. Paste the code into a Swift file or playground.
2. Run it once to verify the output.
3. Adjust the inputs to match your use case.

Copy and paste

import Foundation

class Animal {
    func speak() {
        print("...")
    }
}

class Dog: Animal {
    override func speak() {
        print("Woof")
    }
}

let dog = Dog()
dog.speak()

Notes

• Keep functions small and focused for reuse.
• Prefer safe APIs like optionals and guards.