using System;

class Person 

{ 

    private string name;

    private int age;

   public Person(string name, int age)

   { this.name = name;

   this.age = age;}

    public string Name

    {

        get{return this.name;}

        set{ this.name=value;}}

    public int Age

    {get{return this.age;}

     set{this.age=value;}}

    public void IntroduceYourself()

 {Console.WriteLine("Hello! I am {0}, I am {1} years old.",

                       this.name,

                       this.age);}

    public override string ToString()

    {return"Person name:"+this.name+"; Person age:"+this.age;}

public class Program

{

    public static void Main()

    {

        Person firstPerson = new Person("Gosho",10);

        //10 tears late

        firstPerson.Age = firstPerson.Age + 10;

        firstPerson.IntroduceYourself();

    }

}

}