internal class Program
{
    private static void Main(string[] args)
    {
        Console.WriteLine("Please enter your FirstName: ");// Ask the user to enter their first name
        String FirstName = Console.ReadLine();
        Console.WriteLine("Your FirstName is: " + FirstName);//Presents the user their FirstName


        Console.WriteLine("Please enter your Surname: ");// Ask the user to enter their surname
        String Surname = Console.ReadLine();
        Console.WriteLine("Your Surname is: " + Surname);// Presents the user their Surname

        Console.WriteLine("Please enter your National Insurance Number: "); // Ask user to enter their National Insurance Number
        String NationalInsuranceNumber = Console.ReadLine();
        Console.WriteLine("Your National Insurance Number is: " + NationalInsuranceNumber);// Presentes the user their National Insurance Number

        Console.WriteLine("Please enter your age: ");// Ask the user for their age
        int Age = int.Parse(Console.ReadLine());
        Console.WriteLine("Your age is: " + Age); // Presents the user its age

        //This is Valadation of the user age
        while (int.TryParse(Console.ReadLine(), out Age))
        {

            if (Age > 0)
            {
                Console.WriteLine("Age is appropirate ");
            }
            else
            {
                Console.WriteLine("Invalid input. Please enter an appropirate age: ");
                break;
            }

        }

        Console.WriteLine("These are all your deatils: " + (FirstName) + (Surname) + (NationalInsuranceNumber) + (Age));



    }
}