C产品在市场上有哪些独特优势？

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csharpusing System;using System.Text.RegularExpressions;

namespace ConsoleApp375{ class Program { static void Main(string[] args) { RegularExpressionDemo(); Console.ReadLine(); }

static void RegularExpressionDemo() { string emailPattern=@^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$; Console.WriteLine(Enter an email:); string email=Console.ReadLine();

if (Regex.IsMatch(email, emailPattern)) { Console.WriteLine(Valid email.); } else { Console.WriteLine(Invalid email.); } } }}

using System; using System.Text.RegularExpressions; namespace ConsoleApp375 { class Program { static void Main(string[] args) { RegularExpressionDemo(); Console.ReadLine(); } static void RegularExpressionDemo() { string emailPattern = @"^[\w!#$%&‘*+\-/=?\^_`{|}~]+(\.[\w!#$%&‘*+\-/=?\^_`{|}~]+)*@((([\-\w]+\.)+[a-zA-Z]{2,4})|(([0-9]{1,3}\.){3}[0-9]{1,3}))\z"; Regex regex = new Regex(emailPattern); string myMail = "[emailprotected]"; var match = regex.Match(myMail); Console.WriteLine(match.Success); } } }