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C# C# Objects Inheritance Inheritance

Inheriting from Polygon

I can't figure out what I'm supposed to do next. 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 read-only field named SideLength thatโ€™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;

        public Square(int sidelength) : base(int NumSides)
        {
          Sidelength = sidelength;

           NumSides = 4;
        }
    }
}

1 Answer

Steven Parker
Steven Parker
229,968 Points

You're close, but:

  • "sidelength" should be spelled "sideLength" (with a capital "L")
  • "Sidelength" should be spelled "SideLength" (with a capital "L")
  • using "base to initialize NumSides to 4." would look like "base(4)"