Basic JavaScript - Understanding Undefined Value returned from a Function

Tell us what’s happening:
Describe your issue in detail here.

Your code so far

// Setup
let sum = 0;

function addThree() {
  sum = sum + 3;
}

// Only change code below this line


// Only change code above this line

addThree();
addFive();

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36

Challenge: Basic JavaScript - Understanding Undefined Value returned from a Function

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You didn’t make any changes to the default code. Did you have a question about this challenge?

Can you please clarify your question. You posted the default code