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@ -2,7 +2,7 @@
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// Say we're writing a game where you can buy items with tokens. All items cost
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// Say we're writing a game where you can buy items with tokens. All items cost
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// 5 tokens, and whenever you purchase items there is a processing fee of 1
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// 5 tokens, and whenever you purchase items there is a processing fee of 1
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// token. A player of the game will type in how many items they want to buy,
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// token. A player of the game will type in how many items they want to buy,
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// and the `total_cost` function will calculate the total number of tokens.
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// and the `total_cost` function will calculate the total cost of the tokens.
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// Since the player typed in the quantity, though, we get it as a string-- and
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// Since the player typed in the quantity, though, we get it as a string-- and
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// they might have typed anything, not just numbers!
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// they might have typed anything, not just numbers!
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