static void Main(string[] args)
{
Experement Ex1 = new Experement("Вася", "йод", "крахмал");
Experement Ex2 = new Experement("Петя", "Ba", "SO4");
Console.WriteLine("\t\tЭКСПЕРЕМЕНТЫ!\n");
Console.WriteLine("{0} + {1} = {2} ", Ex1.ParamA, Ex1.ParamB, Ex1.Result());
Ex1.Display();
Console.WriteLine("{0} + {1} = {2} ", Ex2.ParamA, Ex2.ParamB, Ex2.Result());
Ex2.Display();
Test t1 = new Test("Игрек");
t1.Questions();
t1.Display();
Exam e1 = new Exam("Виталик");
Console.WriteLine(e1.ToString());
e1.Questions();
e1.Display();
e1.ChangeName("Гришка");
Console.WriteLine(e1.GetName());
FinalExam fe1 = new FinalExam("ВОвчик");
if (!(e1 is Question qst1))
{
Console.WriteLine("Преобразование прошло неудачно");
}