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

chris muhirwa
chris muhirwa
1,112 Points
Posted by chris muhirwa
chris muhirwa
1,112 Points

Did you define your Square class as an inner class of the Polygon class?

Did you define your Square class as an inner class of the Polygon class?

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
231,268 Points
Steven Parker
Steven Parker
231,268 Points

The closing brace of the Polygon class is missing (from around line 11). This causes the braces to be unbalanced, and it makes Square appear to be inside Polygon.