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C# C# Objects Inheritance Inheritance

dustin rimel
dustin rimel
8,734 Points
Posted by dustin rimel
dustin rimel
8,734 Points

Challenge trouble with Polygon class and Square class

Typed the code below and the error I get is Did you initialize the field numSides to 4 in the base constructor.

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;  

    }
}

}

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;  

        }
    }
}

2 Answers

Seth Kroger
Seth Kroger
56,413 Points
Seth Kroger
Seth Kroger
56,413 Points

Since squares always have four sides you want to set the number of sides to 4, not a variable (which is undefined in the scope of the Square class anyway).

dustin rimel
dustin rimel
8,734 Points
dustin rimel
dustin rimel
8,734 Points

I don't understand where I set the number of sides to 4

dustin rimel
dustin rimel
8,734 Points
dustin rimel
dustin rimel
8,734 Points

Nevermind I get it:

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(4)
    {
      SideLength = sideLength;  

    }
}

}