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 Loops and Final Touches Foreach Loops

Posted by ryan forsyth
ryan forsyth
9,919 Points

Return the average length of the tongues of the frogs in the array. Use a foreach loop as part of your solution.

its telling me "int cannot be used in a foreach statement" but i was using a double

FrogStats.cs 
namespace Treehouse.CodeChallenges
{
    class FrogStats
    {
        public static double GetAverageTongueLength(Frog[] frogs)
          {
            double total = 0;

            foreach(TongueLength tongueLength in frogs.Length)
            {
                total+=frogs[i].TongueLength;
            }
            return total / frogs.Length;
        }
    }
}
Frog.cs 
namespace Treehouse.CodeChallenges
{
    public class Frog
    {
        public int TongueLength { get; }

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

1 Answer

Steven Parker
Steven Parker
231,275 Points
Steven Parker
Steven Parker
231,275 Points

That message is referring to frogs.Length.

That's one of a few issues:

  • frogs.Length is an int, not a collection that can be used to iterate through
  • TongueLength is not a variable type or class name
  • there is no variable i defined
  • a foreach loop works directly with elements of the collection, no indexing is needed

And while it's not an error, "tongueLength" is an odd name for a variable that will represent an individual Frog.