Last time, we learned how functions can receive information through parameters. But what if we want a function to give us information back after it's done working?

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Imagine asking a calculator to add numbers—wouldn't you want the answer back?

Functions can return values using the return keyword. When a function returns something, it sends that value back to wherever the function was called from. The return keyword immediately stops the function's execution.

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What do you think this function gives back?

To capture what a function returns, we assign the function call to a variable. The returned value gets stored in that variable for us to use later.

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See how we "caught" the returned value?

Not all functions need to return values. A function that just prints a message, like our sayHello() function, doesn't need to send anything back. These are often used for performing an action.

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Can you spot the difference in how these might be used?