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C# Querying With LINQ Functional Programming in C# Delegates

Posted by William Polk
William Polk
9,026 Points

Create another public static method named Square that matches the signature of the MathOperation delegate. Inside the me

I keep getting a bummer message which asks me if I've declared a variable called "add." I don't understand what this means.

Program.cs 
using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        delegate int MathOperation(int number);
        public static int Add(int number)
        {
            return number + number;
        }

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

        static void Main(string[] args)
        {

        }
    }
}

1 Answer

Steve Agusta
Steve Agusta
6,221 Points
Steve Agusta
Steve Agusta
6,221 Points

hi William,

if you refer to the previous video, do you remember the example Carling showed were she created the method signature, then in the Main function, declared a variable that called the SayHello method? We're going to do the same thing here, but with the Add method. So you've created the delegate, now you just have to declare a variable that calls that method.