static void Main(string[] args) { ExDeviderV2.AdditionalEx(); Notebook notebook = new Notebook("Banana", "Mama Africa", 999); new Notebook().Show(); ExDeviderV2.Ex2(); Train[] bigTrain = new Train[3]; ClassForTrain trainClass = new ClassForTrain(); trainClass.AddTrain(bigTrain); trainClass.Search(bigTrain); ExDeviderV2.Ex3(); string text = "unchanged!!"; MyClass myClass = new MyClass(text); var myStruct = new MyStruct(text); Console.WriteLine(myClass.change); Console.WriteLine(myStruct.change); ExDeviderV2.Line(); ClassTaker(myClass); StructTaker(myStruct); Console.WriteLine(myClass.change); Console.WriteLine(myStruct.change); ExDeviderV2.Line(); Console.ReadKey(); }