STEP 15: Let's continue storing and returning damage until we can use it outside of all the functions.

• Look inside cast_spell() to find the function calls for both fireball() and rock_smash().
• Add a return variable in front of both function calls to store the returned value, like this: damage =

At this point, the damage value has come from calculate_damage() to fireball() or rock_smash() and is now in cast_spell()! If we return it one more time, we can use damage in the MAIN CODE section.

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