public void Review(int x, int y, int z)
{
SimpleClass simpleClass = new SimpleClass();
simpleClass.sum(x, y);
Numberclass numclass = new Numberclass();
numclass.sum(x, y);
AbstractClassPrac implClass = new ImplementingClass();
implClass.sum(x, y);
SealedClass sealedClass = new SealedClass();
sealedClass.sum(x, y);
Console.WriteLine();
Encapsulation encapsulation = new Encapsulation();
encapsulation.sum(x, y);
Polymorphism polymorphism = new Polymorphism();
polymorphism.sum(x, y);
polymorphism.sum(x, y, z);
Console.WriteLine();
}