I have a problem with the for-loops-2 challenge in C#
Why won't it compile?

Question

namespace Treehouse.CodeChallenges
{
    class FrogStats
    {
        public static double GetAverageTongueLength(Frog[] frogs)
        {
            for(int i = 0; i < frogs.TongueLength; i++)
            {
                Frog frog = frogs[i];
            }
        }
    }
}
```FrogStats.cs
namespace Treehouse.CodeChallenges
{
    class FrogStats
    {
        public static double GetAverageTongueLength(Frog[] frogs)
        {
            for(int i = 0; i < frogs.TongueLength; i++)
            {
                Frog frog = frogs[i];
            }
        }
    }
}
```
```Frog.cs
namespace Treehouse.CodeChallenges
{
    public class Frog
    {
        public int TongueLength { get; }
    public Frog(int tongueLength)
    {
        TongueLength = tongueLength;
    }
}
}
```

Khoa Nguyen · Accepted Answer

double avgTongueLength = 0d;
double total = 0d;
            for(int i = 0; i < frogs.Length; i++)
            {
                total = total + frogs[i].TongueLength;
            }
avgTongueLength = total / (frogs.Length -1 )

Fabian Pijpers · Answer

Dear Khoa Nguyen,
The Format in which the answer is returned does not comply with the way challenge requires it to return.
In your example it returns a single value;
While the requested answer is in an arrayformat.
Kind Regards,
Fabian Pijpers.

Wes Fielder · Answer

You have two errors in your GetAverageTongueLength method.
You aren't returning a value. You need to return a double to satisfy the method signature.
You are trying to access the TongueLength property of an instance of your Frog class instead of the Length property of the frogs array. If you want to iterate over all the elements in the frogs array you need to change frogs.TongueLength to frogs.Length, and then you can implement your logic to calculate the average tongue length within your for loop.

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Fabian Pijpers

Fabian Pijpers

I have a problem with the for-loops-2 challenge in C# Why won't it compile?

3 Answers

Khoa Nguyen

Khoa Nguyen

Wes Fielder

Wes Fielder

Fabian Pijpers

Fabian Pijpers