internal class Program
{
    private static void Main(string[] args)
    {

        //declares variables
        string Input = "";
        float Radius = 0;
        float Height = 0;
        double Pi = 3.142;
        float RadiusSquared = 0;
        float HeightDivided = 0;
        double Volume = 0;
        Boolean RadiusT = false;
        Boolean HeightT = false;
        Boolean ConvertOK = false;
        

        do//initiates a loop statement
        {
            Console.WriteLine("What is the radius");//outputs text to user
            Input = Console.ReadLine();//inputs answer from user
            ConvertOK = float.TryParse(Input, out Radius);//converts a string to integer
            if (ConvertOK)
                if (Radius < 1)//will use this if condition if the number is less than 1
                {
                    Console.WriteLine("Please enter a valid number");//outputs text to user
                }
                else//if conditions are not met
                {
                    Console.WriteLine("Radius is accepted, the radius is " + Radius);//outputs text to user
                    RadiusT = true;//sets a boolean to true
                }
        } while (RadiusT == false);//ends loop when condition is met



        do//initiates a loop statement
        {
            Console.WriteLine("What is the height");//outputs text to user
            Input = Console.ReadLine();//inputs answer from user
            ConvertOK = float.TryParse(Input, out Height);//converts a string to integer
            if (ConvertOK)
                if (Height < 1)//will use this if condition if the number is less than 1
                {
                    Console.WriteLine("Please enter a valid number");//outputs text to user
                }
                else//if conditions are not met
                {
                    Console.WriteLine("Height is accepted, the height is " + Height);//outputs text to user
                    HeightT = true;//sets a boolean to true
                }
        } while (HeightT == false);//ends loop when condition is met

        RadiusSquared = Radius * Radius;//calculates radius squared
        HeightDivided = Height / 3;//calculates height divided by 3
        Volume = Pi * RadiusSquared * HeightDivided;//caclucated the volume of the cone
        Volume = Math.Round(Volume, 2);//round the volume to 2 decimal points
        Console.WriteLine(Volume);//output the volume for the user
        Console.ReadKey();
    }
}