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Function Details : regfree

voidregfree(regex_t * preg) ;

Return Type : void

Type that indicates no return value

Read about return values of regfree function .

1st Parameter Type : regex_t *

A pointer to a `regex_t` structure used for storing a compiled regular expression. This structure is required by POSIX regex functions like `regcomp`, `regexec`, and `regfree`.

1st Parameter

Pointer to the `regex_t` structure containing the compiled regular expression to be freed.

Read more about parameters of regfree in parameters section

The regfreefunction in C language Frees any memory allocated by regcomp for the compiled regular expression.

The regfree function is used to deallocate any memory that was allocated by regcomp when compiling a regular expression. It should be called when the compiled regular expression is no longer needed to prevent memory leaks.

The regfreefunction takes 1 parameter:

•
regex_t * `preg`: Pointer to the `regex_t` structure containing the compiled regular expression to be freed.

Frees the memory and resources allocated by `regcomp` for the compiled regular expression stored in the `regex_t` structure pointed to by `preg`. This function must be called to avoid memory leaks after the regular expression is no longer needed.

The regfree function return value :

This function does not return a value

Output

This example demonstrates the basic usage of regfree to deallocate memory after using a compiled regular expression.