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 Encapsulation with Properties Computed Properties

Kiem Ruach
Kiem Ruach
2,267 Points
Posted by Kiem Ruach
Kiem Ruach
2,267 Points

C# Challenges

where did i go wrong here

Square.cs 
namespace Treehouse.CodeChallenges
{
    class Square : Polygon
    {
        public double SideLength { get; private set; }

        public Square(double sideLength) : base(4)
        {
            SideLength = sideLength;
        }
        public double Area()
        {
        get
        {
        return Square(base)*2;
        }
        }
    }
}
Polygon.cs 
namespace Treehouse.CodeChallenges
{
    public class Polygon
    {
        public int NumSides { get; private set; }

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

3 Answers

Steven Parker
Steven Parker
231,198 Points
Steven Parker
Steven Parker
231,198 Points

A computed property should not have () after the name. And the "get" method shouldn't refer to the class itself (and won't need "base", either).

The "get" method should should return the square of "SideLength".

Kiem Ruach
Kiem Ruach
2,267 Points
Kiem Ruach
Kiem Ruach
2,267 Points

namespace Treehouse.CodeChallenges { class Square : Polygon { public double SideLength { get; private set; }

    public Square(double sideLength) : base(4)
    {
        SideLength = sideLength;
    }
    public Area
    {
    get
    {
    return Square(SideLength);
    }
    }
}

}

am i getting closer?

Steven Parker
Steven Parker
231,198 Points
Steven Parker
Steven Parker
231,198 Points

When I said "the "get" method shouldn't refer to the class itself" I meant it would not use the term "Square".
An easy way to square a number is to multiply it by itself.

Kiem Ruach
Kiem Ruach
2,267 Points
Kiem Ruach
Kiem Ruach
2,267 Points

Steven Parker I figured out, just to let you know. Thanks for all your help.

Steven Parker
Steven Parker
231,198 Points
Steven Parker
Steven Parker
231,198 Points

Kiem Ruach — Glad to help. You can mark the question solved by choosing a "best answer".
And happy coding!