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C# C# Objects Loops and Final Touches For Loops

Why is the for loop code not running and giving error message?

What is making the code below to give this error: FrogStats.cs(10,17): error CS0019: Operator +=' cannot be applied to operands of typedouble'

class FrogStats { public static double GetAverageTongueLength(Frog[] frogs) { double sum = 0.0; for (int i = 0; i < frogs.Length; i++) { sum += frogs[i];

            return sum / (frogs.Length);
        }
    }
}
FrogStats.cs
namespace Treehouse.CodeChallenges
{
    class FrogStats
    {
        public static double GetAverageTongueLength(Frog[] frogs)
        {
            double sum = 0.0;
            for (int i = 0; i < frogs.Length; i++)
            {
                sum += frogs[i];

                return sum / (frogs.Length);
            }
        }
    }
}
Frog.cs
namespace Treehouse.CodeChallenges
{
    public class Frog
    {
        public int TongueLength { get; }

        public Frog(int tongueLength)
        {
            TongueLength = tongueLength;
        }
    }
}

1 Answer

Jennifer Nordell
seal-mask
STAFF
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there! Well you have a couple of problems here. So I'm going to point them out and we'll see if you can get it from these hints.

  • frogs is an array of frogs. So frogs[0] doesn't contain a number, it contains a frog :frog: What you actually want is the length of the frog's tongue at that index.
  • you're returning a value from inside your for loop. Remember that a loop ceases to execute once a return statement is hit

Hope this helps, but let me know if you need more assistance! :sparkles: