#647 – A struct Can Implement an Interface

You’ll most often see an interface implemented by a class, but a struct can also implement an interface.

struct implements an interface in the same way as a class–by listing the name of the interface after the name of the struct and then by providing implementations of the members in the interface.

Suppose that we had the following interface:

    public interface IBoxCalcs
        double CalcVolume();
        double CalcSurfaceArea();

We can then implement this interface in a struct.

    public struct BoxSize : IBoxCalcs
        public double x;
        public double y;
        public double z;

        // Constructor that fully initializes the object
        public BoxSize(double x, double y, double z)
            this.x = x;
            this.y = y;
            this.z = z;

        public double CalcVolume()
            return x * y * z;

        public double CalcSurfaceArea()
            return (2 * x * y) + (2 * x * z) + (2 * y * z);

About Sean
Software developer in the Twin Cities area, passionate about software development and sailing.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: