C++ Regex 邮箱校验

来源：互联网发布：7u分享网络提现地方编辑：程序博客网时间：2024/04/29 21:48

#include <regex>#include <iostream>#include <string>bool is_email_valid(const std::string& email){   // define a regular expression   const std::tr1::regex pattern      ("(\\w+)(\\.|_)?(\\w*)@(\\w+)(\\.(\\w+))+");   // try to match the string with the regular expression   return std::tr1::regex_match(email, pattern);}int main(){   std::string email1 = "marius.bancila@domain.com";   std::string email2 = "mariusbancila@domain.com";   std::string email3 = "marius_b@domain.co.uk";   std::string email4 = "marius@domain";   std::cout << email1 << " : " << (is_email_valid(email1) ?      "valid" : "invalid") << std::endl;   std::cout << email2 << " : " << (is_email_valid(email2) ?      "valid" : "invalid") << std::endl;   std::cout << email3 << " : " << (is_email_valid(email3) ?     "valid" : "invalid") << std::endl;   std::cout << email4 << " : " << (is_email_valid(email4) ?     "valid" : "invalid") << std::endl;   return 0;}

转帖：http://ubuntuforums.org/showthread.php?t=1114404