// See https://aka.ms/new-console-template for more information
//Console.WriteLine("Hello, World!");
using System.Text.RegularExpressions;
class Program
{
    static void Main(string[] args)
    {
        Console.WriteLine("Enter an email address:");
        var email = Console.ReadLine();
        Console.WriteLine("Enter mobile number:");
        var mobile = Console.ReadLine();
        var mobilePattern = "^[6-9]\\d{9}$";

        if (Regex.IsMatch(mobile, mobilePattern)) {
            Console.WriteLine("Valid mobile number");
        } else {
            Console.WriteLine("Invalid mobile number");
        }
        var pattern = "^[a-zA-Z0-9._%/+-]+@[a-zA-Z0-9.-]+[a-zA-Z]{2,}$";
        if(Regex.IsMatch(email, pattern)) {
            Console.WriteLine("Valid email address");
        } else {
            Console.WriteLine("Invalid email address"); 

        }
    }
}