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C# C# Objects Inheritance Inheritance

Jordan Fotouhi
Jordan Fotouhi
7,058 Points
Posted by Jordan Fotouhi
Jordan Fotouhi
7,058 Points

Class Square Inheriting from Polygon

I can't figure out what I'm doing wrong and what, if any, of the code I've done is correct. "The Polygon class represents a 2 dimensional shape. It has a public field named NumSides. Create a new type of polygon called Square. It should have a public readonly field named SideLength that’s initialized using the constructor. Use base to initialize NumSides to 4."

Polygon.cs 
namespace Treehouse.CodeChallenges
{
    class Polygon
    {
        public readonly int NumSides;

        public Polygon(int numSides)
        {
            NumSides = numSides;
        }
    }

    class Square : Polygon
    {
        public readonly int SideLength(int numsides) : base(4)
        {

        }
    }
}

1 Answer

Steven Parker
Steven Parker
231,198 Points
Steven Parker
Steven Parker
231,198 Points

You're actually pretty close, but you seem to have mixed the field declaration in with the constructor definition. Take a look at "Polygon" and use it as a model. Define your field "SideLength" on a line by itself, then define the contstructor for "Square" (constructors always have the same name as the class).

Also, while "Polygon" has a parameter named "numSides", yours will be "sideLength". You have the "base" call right, that throws folks a lot.

Finally, inside the constructor, set your field using the parameter similarly to what "Polygon" does.