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isalnum() Function | C Programming Tutorial

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How to use the isalnum() function to check if a character is alphanumeric or not in C, i.e. whether a character is a letter or digit, or not. Source code: https://github.com/portfoliocourses/c-example-code/blob/main/isalnum.c. Check out https://www.portfoliocourses.com to build a portfolio that will impress employers!