c program to match pass code within array digits

Question

accept a 4 digit value from the virtual serial port on the Nucleo Board.
If the 4 digit value is one of the 10 pass-codes stored in an array, issue an auditory feedback signal and the text "access granted" to the serial port.
If it is not one of the 10 allowable pass-codes, issue another appropriate auditory feedback signal and the text "access denied".
Also illuminate a red led if the access is not granted and a green led if access is granted.

Answer 1

Please don't make duplicate threads for the same question, choose either one to keep.
Thanks for understanding 👍

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