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# Querying With LINQ Functional Programming in C# Delegates

Lewis Cowles
Lewis Cowles
74,902 Points

what's going wrong here?

Instantiate a new MathOperation named add and pass it Add method...

Program.cs
using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        delegate int MathOperation(int number);

        public static int Add(int number)
        {
            return number + number;
        }

        static void Main(string[] args)
        {
            MathOperation mathOperation = delegate(int number) {
                return 0;
            };
            MathOperation add = new MathOperaton(Add);

        }
    }
}

1 Answer

Lewis Cowles
Lewis Cowles
74,902 Points

Solved...

using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        delegate int MathOperation(int number);

        public static int Add(int number) {
            return number + number;    
        }

        public static int Square(int number) {
            return number * number;
        }

        static void Main(string[] args)
        {
            MathOperation add = new MathOperation(Add);
            MathOperation square = new MathOperation(Square);
        }
    }
}