static double GetAverageAge(Animal[] animals)
{
return animals.Average(animal => animal.Age); // Using extension method from namespace System.Linq
}
static void Main()
{
string decorationLine = new string('-', 80);
Console.Write(decorationLine);
Console.WriteLine("***Calculating the average age of some kinds of animals***");
Console.Write(decorationLine);
Kitten[] kittens = new Kitten[]
{
new Kitten("Beanie", 4),
new Kitten("Bitsy", 5),
new Kitten("Bunny", 15),
new Kitten("Gussie", 6),
new Kitten("Herbie", 3)
};
Tomcat[] tomcats = new Tomcat[]
{
new Tomcat("Tango", 18),
new Tomcat("Telstar", 9),
new Tomcat("Thunder", 5),
new Tomcat("Taffy", 11),
new Tomcat("Titan", 22)
};
Dog[] dogs = new Dog[]
{
new Dog("Abby", 2, false),
new Dog("Action", 25, true),
new Dog("Sharo", 10, true),
new Dog("Addison", 8, false),
new Dog("Artie", 9, true)
};
Frog[] frogs = new Frog[]
{
new Frog("Froggie", 6, true),
new Frog("Lizzie", 2, false),
new Frog("Fue", 5, false),
new Frog("Pickles", 19, false),
new Frog("Prince", 9, true)
};
// Using random indices from the arrays
Console.WriteLine("---Printing all the information about one of animal of each kind---");
Console.WriteLine(kittens[1]);
Console.WriteLine(tomcats[4]);
Console.WriteLine(dogs[0]);
Console.WriteLine(frogs[3]);
Console.WriteLine();
Console.WriteLine("---Printing the typical sound that different kinds of animals produce---");
// Using random indices from the arrays
Console.WriteLine(kittens[2].GetSound());
Console.WriteLine(tomcats[0].GetSound());
Console.WriteLine(dogs[3].GetSound());
Console.WriteLine(frogs[1].GetSound());
Console.WriteLine();
Console.WriteLine("---Printing the average age of the animals of each kind---");
Console.WriteLine("Average age of the kittens: " + GetAverageAge(kittens));
Console.WriteLine("Average age of the tomcats: " + GetAverageAge(tomcats));
Console.WriteLine("Average age of the dogs: " + GetAverageAge(dogs));
Console.WriteLine("Average age of the frogs: " + GetAverageAge(frogs));
Console.WriteLine();
// Getting the average age of all animals
Animal[] animals = new Animal[20]
{
kittens[0], kittens[1], kittens[2], kittens[3], kittens[4],
tomcats[0], tomcats[1], tomcats[2], tomcats[3], tomcats[4],
dogs[0], dogs[1], dogs[2], dogs[3], dogs[4],
frogs[0], frogs[1], frogs[2], frogs[3], frogs[4]
};
Console.WriteLine("Average age of all animals: " + GetAverageAge(animals));
}