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 Amit Ghosh
Amit Ghosh
9,314 Points

Please help in assigning the base construtor

Any help will be greatly appreciated on how to assign value to the child constructor using the base constructor.

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

        public Polygon(int numSides)
        {
            numSides=4;
        }
    }
    class Square: Polygon
    {
        public readonly int SideLength;

        public Square (int sideLength) : base(NumSides)
        {

        }
    }
}

2 Answers

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

:point_right: You don't need to name the parameter in the call to base.

The value of NumSides will receive whatever you pass to it in the call to base. So, to set it to 4, you would call: "base(4)".

Also, inside the constructor remember to initialize SideLength with the value passed to the constructor for Square.

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

Thanks a Lot Steven, now I know how to assign the constructor with base value.