using System;

​

public class Person

{

    private string firstName;

    private string lastName;

    private int age;

    public Person(string a, string b, int c)

    {

        this.FirstName = a;

        this.lastName = b;

        this.age = c;

    }

​

    public string FirstName

    {

        get

        {

            return this.firstName;

        }

​

        set

        {

            if (string.IsNullOrEmpty(value))

            {

                throw new ArgumentNullException("value", "The firstname cannot be null or empty!");

            }

​

            this.firstName = value;

        }

    }

​

    public string LastName

    {

        get

        {

            return this.lastName;

        }

​

        set

        {

            if (string.IsNullOrEmpty(value))

            {

                throw new ArgumentNullException("value", "The last name cannot be null or empty!");

            }

​

            this.lastName = value;

        }

    }

​

    public int Age

    {

        get

        {

            return this.age;

        }

​

        set

        {

            if (value < 10 || value > 120)

            {

                throw new ArgumentOutOfRangeException("value", "Age should be in htis range 0-120!");

            }

​

            this.age = value;

        }

    }

}

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Пример за контрол на входните данни");

        try

        {

            Person gosho = new Person("Георги", "Яворов", 25);

            Person ivan = new Person("Марин", "Петров", 125);

            Person tosho = new Person("Драган", "Георгиев", 55);

            Console.WriteLine(gosho.FirstName + " " + gosho.LastName + " " + gosho.Age);

            Console.WriteLine(ivan.FirstName + " " + ivan.LastName + " " + ivan.Age);

            Console.WriteLine(tosho.FirstName + " " + tosho.LastName + " " + tosho.Age);

        }

        catch (ArgumentNullException ex)

        {

            Console.WriteLine("Exception throw {0}:", ex.Message);

        }

        catch (ArgumentOutOfRangeException ex)

        {

            Console.WriteLine("Exception throw {0}:", ex.Message);

        }

    }

}