using System;

public class Program

{

    struct Cornea{

        public string name;

        public float leftCylinder;

        public float rightCylinder;

        public float leftAxis;

        public float rightAxis;

        public float spherical;

    }

    public static void Main()

    {

        Cornea corneaN;

        Console.Write("Enter the name:-");

        corneaN.name=Console.ReadLine();

        Cornea cornealc;

        Console.Write("Enter the Left Eye Cylinder Power:- ");

        cornealc.leftCylinder=float.Parse(Console.ReadLine());

        Cornea corneala;

        Console.Write("Enter the Left Eye Axis:- ");

        corneala.leftAxis=float.Parse(Console.ReadLine());

        Cornea cornearc;

        Console.Write("Enter the Right Eye Cylinder Power:- ");

        cornearc.rightCylinder=float.Parse(Console.ReadLine());

        Cornea corneara;

        Console.Write("Enter the Right Eye Axis:- ");

        corneara.rightAxis=float.Parse(Console.ReadLine());

        Console.WriteLine("Information Stored as Follows");

        Console.WriteLine("Left Eye:-"+cornealc.leftCylinder + corneala.leftAxis);

        Console.WriteLine("Right Eye-:"+cornearc.rightCylinder + corneara.rightAxis);

        Cornea corneasp;

        corneasp.spherical=(cornealc.leftCylinder + cornearc.rightCylinder /2);

        Console.WriteLine("Calculated Spherical Equivalent is " +corneasp.spherical);

        Console.Write("If you want another prescription?");

        char character =char.Parse(Console.ReadLine());

        if(character == 'y'){

            Console.Write("Okay");

        }

        else if(character=='n')

            Console.Write("Thank you for choosing Cornea Care");

        else

            Console.WriteLine("Wrong input");

    }

}