Learn Already Used

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What if the user is trying to use the letter that has been already used? We need to 'punish' the user by decreasing warnings_remaining(or guesses_remaining if there are no warnings left). We are saving all letters that have been used into the used_letters variable.

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Task

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Decrease the warnings_remaining.
Set condition if the warnings_remaining is lower than 0.
Decrease the guesses_remaining.

Solution

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Section 3. Chapter 3

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