static void Main(string[] args) { Console.WriteLine("Enter First Name"); string firstName = Console.ReadLine(); RegexClass regexClass = new RegexClass(); if (regexClass.validateFirstName(firstName)) { Console.WriteLine("Valid First Name"); } else { Console.WriteLine("InValid First Name"); } Console.WriteLine("Enter Last Name"); string lastName = Console.ReadLine(); if (regexClass.validateLastName(lastName)) { Console.WriteLine("Valid Last Name"); } else { Console.WriteLine("InValid Last Name"); } Console.WriteLine("Enter the Email"); string email = Console.ReadLine(); if (regexClass.validateEmail(email)) { Console.WriteLine("Valid Email"); } else { Console.WriteLine("InValid Email"); } Console.WriteLine("Enter Mobile Number"); string mobileNumber = Console.ReadLine(); if (regexClass.validateMobileNumber(mobileNumber)) { Console.WriteLine("Valid Mobile Number"); } else { Console.WriteLine("InValid Mobile Number"); } Console.WriteLine("Enter Password"); string pasword = Console.ReadLine(); if (regexClass.validatePassword(pasword)) { Console.WriteLine("Valid Password"); } else { Console.WriteLine("Invalid Password"); } }