正则表达式验证邮箱

 #include "regex.h"

bool isEmail(const char *email)

{

    const char *eset = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";

    regex_t   re;  

    regmatch_t   subs[10];

    regex_t stuRT;

    

    regcomp(&stuRT, eset, REG_EXTENDED);

    int err = regexec(&stuRT, email, (size_t)10, subs, 0);

    

    if (err) {

        

        regfree   (&re);

        return false;

    }

    else 

    {

        regfree   (&re);

        return true;

    }



}