#Mastery 19

Validated user input Validating what the user writes can be more simple than what you think. Here´s an example, and you will notice that you have been doing it without knowing: Ask you can see it is what you´ve been doing all the time when codying a program. Here is another example: References: https://stackoverflow.com/questions/23294658/asking-the-user-for-input-until-they-give-a-valid-response


Recursion Is a code in which a function calls itself one or more times in its body, usually returning the value of the function call. There is not an exact formula for this codding way but here are some examples: Strings: Notice that you first write the “complement” of the main phrase and then you […]

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