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C# C# Objects Inheritance Inheritance

Posted by Amit Ghosh
Amit Ghosh
9,314 Points

not able to submit the code , it has errors, need help

is the code correct. not able to check work..

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)
        {

        }

        }
    }
}

3 Answers

Steven Parker
Steven Parker
231,271 Points
Steven Parker
Steven Parker
231,271 Points

:point_right: You defined the "Square" class inside the "Polygon" class.

The definition of "Square" should share the namespace with "Polygon" at the same nesting level.

Also, you forgot to initialize the SideLength field with the value passed to your constructor.

Amit Ghosh
Amit Ghosh
9,314 Points
Amit Ghosh
Amit Ghosh
9,314 Points

I created the sample code, not able to initialize the value to sideLenght. Any help please:

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks;

namespace TreeHouse_inheritance {

class Polygon
{
    public  int NumSides;

    public Polygon (int numsides)
        {
        this.NumSides = 4;
        }
}

class Square : Polygon
{
    public readonly int SideLength;
    public Square( int SideLength) : base(SideLength)
    {

    }
}
class Program
{
    static void Main(string[] args)
    {
        Polygon p = new Polygon(1);
        Console.WriteLine("Polygon Class {0}", p.NumSides);
        Square s = new Square(1);
        Console.WriteLine("SquareClass {0}", s.SideLength);
        Console.ReadLine();
    }
}

}

Result:

Polygon Class 4 SquareClass 0

Amit Ghosh
Amit Ghosh
9,314 Points
Amit Ghosh
Amit Ghosh
9,314 Points

public Square( int SideLength) : base(SideLength) { this.SideLength = NumSides; } }

This works,

Polygon Class 4 SquareClass 4,

Can anyone explain me the difference.