using System;using System.Collections.Generic;using System.Collections.ObjectModel;namespace RickyTest{ public class Starter { public static void Main() { Cat ricky = new Cat("Ricky the Cat", 26); } } public interface Animals { void EatFood(); void Breathing(); } public class Cat: Animals { public string name; public int age; public int Age { get { return age; } set { if (Age > 25) { Console.WriteLine("Invalid age, age not set."); } else { age = value; } } } public Cat(string name, int age) { this.name = name; this.Age = age; Console.WriteLine("A new cat is just created"); Console.WriteLine(this.name + " is "+this.age+ " years old."); } public void EatFood() { Console.WriteLine(this.name+" eats some food."); } public void Breathing() { Console.WriteLine(this.name + " takes a few breaths of fresh air"); } }}