Can someone explain me the difference between this?

Question

Shape c = new Circle();
//this and
Circle c = new Circle();

Im currently at polymorphism part, i don't understand how this affect the final result of the object properties
Also sorry if my english is kind of weird my native language is spanish.

Answer 1

Did you get to the last section of the polymorphism lesson?
https://www.sololearn.com/learn/CSharp/2681/
Take into consideration the following code where you can use 1 variable of the parent class to instantiate any of its child classes.

Shape c = new Circle();
c.Draw();

c = new Rectangle();
c.Draw();

Circle cir = new Circle();
cir.Draw();

// this produces an error
// cir = new Rectangle();