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#

Steve Agusta
Steve Agusta
6,221 Points
Posted by Steve Agusta
Steve Agusta
6,221 Points

C# Objects For Loop Challenge

I am having trouble with this challenge, getting an error saying I cannot implicitly convert type double to int, but I have declared the variable as a double:

namespace Treehouse.CodeChallenges
{
    class FrogStats
    {
        public static double GetAverageTongueLength(Frog[] frogs)
        {
            double sum = 0;
            double average = 0;
            for(double i = 0; i < frogs.Length; i++)
            {
                sum = i;
                average = sum / frogs[i].TongueLength;
                return average;
            }       
        }
    }
}
Steve Agusta
Steve Agusta
6,221 Points
Steve Agusta
Steve Agusta
6,221 Points

I'm getting the following error now:

: not all code paths return a value FrogStats.cs(10,46): warning CS0162: Unreachable code detected Compilation failed: 1 error(s), 1 warnings

2 Answers

Khaled AbuAlqomboz
PLUS
Khaled AbuAlqomboz
Courses Plus Student 1,282 Points
Khaled AbuAlqomboz
Khaled AbuAlqomboz
Courses Plus Student 1,282 Points

in the loop, change the iterator type from double to int, then it will work,

from: for(double i = 0; i < frogs.Length; i++)

to: for(int i = 0; i < frogs.Length; i++)

because the array index is integer.

Jeremy McLain
STAFF
Jeremy McLain
Treehouse Guest Teacher
Jeremy McLain
Jeremy McLain
Treehouse Guest Teacher

The code has a return inside the for loop. This will cause the loop to only run once and then immediately return from the method. Move the return statement to after the end of the for loop so that you're returning the average after the loop has completed calculating it.