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C# C# Objects Inheritance Inheritance

Shing wai Chan
Shing wai Chan
1,255 Points
Posted by Shing wai Chan
Shing wai Chan
1,255 Points

Does your Square class derive from the Polygon class?

Inn class Square i pass as: Class Square: Polygon. Should work?

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

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

    }

    class Square: Polygon
    {
     public readonly int SideLength;

      public Square(int sideLength) : base (NumSides)
      {
        SideLength = sideLength;
       NumSides = 4;

      }

    }
}

2 Answers

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

The challenge apparently wants to see a space on both sides of the colon that specifies the inheritance. It also does not seem to like spaces between a function name and the parentheses (as you have with base). Neither of these are actual syntax errors in the language. You might want to report these as bugs to Treehouse Support, it may even get you a "special Exterminator badge".

Also remember that the base constructor runs first, so you can't assign NumSides in your constructor and then pass it to base. You'll have to pass a 4 directly to base.

Shing wai Chan
Shing wai Chan
1,255 Points
Shing wai Chan
Shing wai Chan
1,255 Points

Thank you :) it was some space problem between the codes, and yes the : base(4). noted :)

Jeremy McLain
STAFF
Jeremy McLain
Treehouse Guest Teacher
Jeremy McLain
Jeremy McLain
Treehouse Guest Teacher

Yep! This is problem in the code challenge. I've fixed it.