#include <stdio.h>

#include <regex.h>

#include <mhash.h>

int main() {

    regex_t rgx;

    char *pattern = "^[[:alnum:]]*$";

    char *str = "shabi";

    if (regcomp(&rgx, pattern, REG_EXTENDED | REG_NOSUB) != ) {

        perror("Invalid regex pattern");

        regfree(&rgx);

        exit(EXIT_FAILURE);

    }

    if (regexec(&rgx, str, , NULL, ) == ) {

        printf("Match success\n");

    } else {

        printf("Match failed\n");

    }

    regfree(&rgx);

    return ;

}