public static void Main()
{
// create two instances of Owner
var peshoOwner = new Owner("Pesho", "Ivanov");
var goshoOwner = new Owner("Gosho", "Petrov");
//// if get and set are not private => the property Age can be appropriated and changed/edited:
//var age = peshoOwner.Age;
//peshoOwner.Age = 11;
peshoOwner.IncreaseAge();
Console.WriteLine(peshoOwner.Age); //1
Console.WriteLine(peshoOwner.FullName); // Pesho Ivanov
var cat = new Cat(CatColor.White);
//whiteCat.Owner = peshoOwner;
var anotherCat = new Cat(CatColor.Black);
var yetAnotherCat = new Cat(CatColor.Brown);
peshoOwner.AddCat(cat, "Dzhinks");
peshoOwner.AddCat(anotherCat, "Silvestar");
// this will cause Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object. => Line 25 in Owner.cs
Console.WriteLine(peshoOwner.AllCats); //Dzhinks, Silvestar
// print static property
Console.WriteLine(Cat.NumberOfLegs); //4
// print the result from a static method WhatDoesTheCatSay()
Console.WriteLine(Cat.WhatDoesTheCatSay()); //Mew!
// invoke the static method PrintCat() in static class Printer
Printer.PrintCat(cat); //Dzhinks 0
// changing cat's name, because it's reference data type
ChangeCatName(anotherCat);
Console.WriteLine(anotherCat.Name); //Johny
// example fot using structure
var point = new Point();
point.X = 4.5m;
point.Y = 18.9m;
Console.WriteLine(point.GetCoordinates()); // 4.5, 18.9
// using generics
//// don't work because int is not Animal
//var intList = new GenericList<int>();
//intList.Add(1);
//intList.Add(2);
//// don't work because string is not Animal
//var strList = new GenericList<string>();
//strList.Add("1");
//strList.Add("2");
var catList = new GenericList <Cat>(); // using MyCollections;
catList.Add(new Cat(CatColor.Brown));
var myList = new GenericList <Animal>(); // using MyCollections;
var anotherMyList = new GenericList <Dog>(); // using MyCollections;
// example using generic method
var value = GetString <int>(5); // works if T can be struct
//var value = GetString(5); // this works too if T can be struct
var anotherValie = GetString <bool>(true); // works if T can be struct
//var kitten = GetString<Cat>(new Cat(CatColor.Brown)); // works if T can be class
//var kitten = GetString(new Cat(CatColor.Brown)); // works too if T can be class
// example for generic method T Min<T>(T first, T second) where T : IComparable<T>
var min = Min <int>(5, 6);
Console.WriteLine(min); //5
// two classes with same name in different namespaces
var secondCat = new AnimalSystem.Cat(); // secondCat.somethingElse...
FirstCat kitten = new FirstCat(CatColor.Brown);
SecondCat anotherKitten = new SecondCat();
}