Exercise: Age limit

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• Create a script called age_limit_stdin.cr

• Ask the user what is their age.
• If it is above 18, tell them they can legally drink alcohol.
• If is is above 21, tell them they can also legally drink in the USA.

• Extra: ask the user for their age and the name of their country and tell them if they can legally drink alcohol.
• See the Legal drinking age list.
• Don't worry if this seems to be too difficult to solve in a nice way. We'll learn more tools to improve.