stuck on a treehouse challenge. How to get average from for loop for Frogs tonguelength

Question

Hi guys. I'm new to coding and tried different variations but I'm stuck. The answer probably really obvious but I'm new to coding. Pls help
namespace Treehouse.CodeChallenges
{
    class FrogStats
    {        
        public static double GetAverageTongueLength(Frog[] frogs)
        {      
            double average;
            for(int i =0; i < frogs.Length; i++)
            {
                Frog frog = frogs[i];
                double frogLen = frog.TongueLength;
                frogLen++;
            }
            average = frogLen/frogs.Length;
            return average;
        }
    }
}
```FrogStats.cs
namespace Treehouse.CodeChallenges
{
    class FrogStats
    {        
        public static double GetAverageTongueLength(Frog[] frogs)
        {      
            double average = 0.0;
            for(int i =0; i < frogs.Length; i++)
            {
                Frog frog = frogs[i];
                double frogLen = frog.TongueLength;
                frogLen++;
            }
            return average;
        }
    }
}
```
```Frog.cs
namespace Treehouse.CodeChallenges
{
    public class Frog
    {
        public int TongueLength { get; }
    public Frog(int tongueLength)
    {
        TongueLength = tongueLength;
    }
}
}
```

Steven Parker · Answer

I see where you initialize "average" to 0.0, and then return it after the loop.    But since the loop does not change it, it will always still be 0.0.
What you might try instead is to initialize a sum, and then add to it inside the loop, and then finally return an average that is calculated by dividing the total sum by the number of frogs in the list.

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Fuli Fuli

Fuli Fuli

stuck on a treehouse challenge. How to get average from for loop for Frogs tonguelength

1 Answer

Steven Parker

Steven Parker