using System;

public class Program

{

    public static void Main()

    {

cat c1= new cat ();

c1.color = " احمر " ;

c1.bday = "1/11/1111";

c1.type = 1;

double a= catAge(c1.bday);

Console.WriteLine(c1.color+ " ///// " + a );

        cat c2= new cat ();

c2.color = "ازرق " ;

c2.bday = "1/11/1112 ";

c2.type = 1;

double a1= catAge(c2.bday);

Console.WriteLine(c2.color+ " ///// " + a1);

        cat c3= new cat ();

c3.color = " اخضر" ;

c3. bday = "1/11/1113 ";

c3.type = 1;

double a2= catAge(c3.bday);

Console.WriteLine(c3.color+ " ///// " + a2);

        cat c4= new cat ();

c4.color = " بني" ;

c4.bday = "1/11/1114 ";

c4.type = 1;

double a3= catAge(c4.bday);

Console.WriteLine(c4.color+ " ///// " + a3);

    }

class cat

{

public string color; 

public string bday ; 

public int type ; 

    }

public static double catAge(string o)

{

double aog =(DateTime.Now - Convert.ToDateTime(o)).TotalDays/30;

return aog; 

}

}

​