# FAQ: Arrays - Built-In Methods

This community-built FAQ covers the “Built-In Methods” exercise from the lesson “Arrays”.

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This exercise can be found in the following Codecademy content:

## FAQs on the exercise Built-In Methods

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There is an error in this section

``````int[] ratings = { 5, 4, 4, 3, 3, 5, 5, 4 };
``````

The Array.IndexOf(ratings, 3); will return as the third index of ratings. You can change the first 3 to any other number and use interpolation to output the stored value index of the 3 star rated song to the screen and that would work.

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Could not follow the guide to ‘Built-In Methods’ (6/8) - Instruction number 1.
Is there any further reading on this topic?
If not, is it worth skipping this part for now?
C# is a real struggle at the moment.

2 Likes