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C# C# Objects Encapsulation with Properties Computed Properties

Rajmohan Ganapathi
Rajmohan Ganapathi
1,405 Points

Write a computed property named Area that returns the area of the square.

Write a computed property named Area that returns the area of the square.

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

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

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

1 Answer

Steven Parker
Steven Parker
212,257 Points

A computed property would not have any setter (private or otherwise). It would also not need a backing field.

Instead, the formula for computing and returning the value would be entirely contained in the "get" method.