![]() In C, it does not support regular expressions and there is a POSIX library. Working of Regular Expressions in C with Examples A regular expression is mainly used for text manipulation tasks. There are some wild card operators such as “*” and “?” are the most used metacharacters that are supported by regular expressions. C does not include regular expression but you can use them by using the library. In C programming language there is a library known as POSIX that is used for a regular expression, whereas there are different regular expression libraries in different programming languages. A regular expression is an expression that has a sequence of characters that are used searching a particular pattern or pattern matching with strings such as finding the subtext in the given text.
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