Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

C# C# Objects Inheritance Inheritance

jack Sandberg
jack Sandberg
1,659 Points

What am I doing wrong ? .. I don't see any problems .. help

Apparently I don't assign sideLength as a paramater in the constructor which i do but with a capital S which it shouldn't complain on ... so what am I doing wrong here ?

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(4)
                {
                SideLength = sideLength;
                }
        }

    }
}

1 Answer

Steven Parker
Steven Parker
229,645 Points

C# is case-sensitive, so it is important that you use "sideLength" (lower case "s") as the name of the parameter in the "Square" class. But you did get the assignment inside the constructor correct (or it will be, once it can access the parameter).

However, that's not your main problem:

:point_right: The "Square" class is being defined inside the "Polygon" class.

It needs to be a peer to the other class — check your bracket placement.