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c regular expressions example
regex regular expressions actually arent part of ansi c. it sounds like you might be talking about the posix regular expression library, which comes with an example of using regular expressions in c nov this example program uses the unix regular expression library. the compiled program takes two arguments. the first is a regular expression. the gnu c library regular expressions the gnu c library supports two interfaces for matching regular expressions. one is the posix regexp compilation using regcomp to prepare to match. match and capture the c language comes with a regular expression engine as standard and a header file in regex.h. in this example program, we ask the user to enter a regular regcomp name. regcomp, regerror, regexec, regfree regular expression matching for simplicity of the example, very little error checking is done. void regcomp posix basic regular expression syntax the posix basic regular expression syntax is used by the unix utility sed , and for example a c will match any single character in the range a to c. regexr learn build amp test regex regular expression tester with syntax highlighting, contextual help, video is an online tool to learn, build, amp test regular expressions regex regexp . c 11 regex tutorial oct c has suport for a few regular expression grammars like ecmascript, awk, grep and a few others, all examples from this tutorial use the regular expressions 101 regex in c 11 jun its not uncommon to use c for text processing for example, reading a file containing html code and writing another file containing the same tech stuff regular expression tester experiment with your own target strings and search a list, for example, a c means check for to and a to c but not a to c .