Web Reference: An example of validating the format of a string in C (Canadian postal codes). Source code: https://github.com/portfoliocourses/c-example-code/blob/main/post... In this article, I am going to discuss How to Validate a String in C Language with Examples. Check whether a given string is valid or not Nov 1, 2025 · The format specifier in C is used to tell the compiler about the type of data to be printed or scanned in input and output operations. They always start with a % symbol and are used in the formatted string in functions like printf (), scanf, sprintf (), etc.
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