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

Posted by Chad Deascenti
Chad Deascenti
Courses Plus Student 2,774 Points

Confused

Please direct to next step

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

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

        Class Square 
        {
        }
    }

}

1 Answer

Steven Parker
Steven Parker
229,644 Points
Steven Parker
Steven Parker
229,644 Points

Here's a few hints:

  • Square should be be defined inside the namespace, but not inside the Polygon class
  • C# is case-sensitive, and the keyword "class" should be all lower-case.
  • next, indicate that Square is a type of (inherits from) Polygon
  • then give it "a public readonly field named SideLength"
  • create a constructor method that takes an argument and initializes SideLength
  • have the constructor pass 4 to the base