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# Basics If Statements "else if" and "else" Statements

Posted by Rutendo Chaurura
Rutendo Chaurura
6,809 Points

Whats wrong with my code. i'm getting the following error:

Bummer: Program.cs(6,19): error CS0161: 'Program.CheckSpeed(double)': not all code paths return a value [/workdir/worksp

Program.cs 
using System;

class Program
{

    static string CheckSpeed(double speed)
    {
        // YOUR CODE HERE
        if (speed>65)
        {
            Console.WriteLine("too fast");
        }
       else if (speed<45)
        {
             Console.WriteLine("too slow");
        }
        else
        {
              Console.WriteLine("speed OK");
        }


    }

    static void Main(string[] args)
    {
        // This should print "too slow".
        Console.WriteLine(CheckSpeed(44));
        // This should print "too fast".
        Console.WriteLine(CheckSpeed(88));
        // This should print "speed OK".
        Console.WriteLine(CheckSpeed(55));
    }

}

1 Answer

Matthew Lang
Matthew Lang
13,483 Points
Matthew Lang
Matthew Lang
13,483 Points

Your CheckSpeed method should be returning a string but instead it is calling Console.WriteLine.

You are already calling Console.WriteLine in Main, so you're looking for CheckSpeed to return the correct string to write to the console.