using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks;

namespace QuickProgram { class Program {

    static void Main(string[] args)
    {

        float[,] data = new float[6, 2]
        {
            { 262f, 0.07f },
            { 414f, 0.10f },
            { 608f, 0.05f },
            { 715f, 0.16f },
            { 815f, 0.24f },
            { 920f, 0.14f }
        };

        float callPrice = 0f;
        string areaCode;
        string minutes;


        while (true)
        {

        InputAC: Console.Write("Avalible Area Codes:" + Environment.NewLine);
            for (int i = 0; i <= 5; i++)
            {
                Console.Write(data[i, 0] + Environment.NewLine);

            }

            Console.Write("Input: <Area Code> " + Environment.NewLine);
            areaCode = Console.ReadLine();
            // Check if areaCode is a valid Area code, and make areaCode into a Double
            if (!IsNumber(areaCode))
            {
                goto InputAC;
            }
            else
            {
                bool isAreacode = false;
                //Check if is part of array
                for (int i = 0; i <= 5; i++)
                {
                    if (Convert.ToDouble(areaCode) == data[i, 0])
                    {
                        isAreacode = true;
                    }
                }
                if (!isAreacode)
                {
                    Console.Write("Is not Area Code!" + Environment.NewLine);
                    goto InputAC;
                }
            }

        InputMin: Console.Write(Environment.NewLine + "Input: <Minutes> ");
            minutes = Console.ReadLine();
            if (!IsNumber(minutes))
            {
                goto InputMin;
            }

            for (int i = 0; i <= 5; i++)
            {
                if (Convert.ToDouble(areaCode) == data[i, 0])
                {

                    callPrice = Convert.ToSingle(minutes) * data[i, 1];
                    Console.Write("You Will Spend: " + callPrice.ToString() + " $" + Environment.NewLine);
                    callPrice = 0f;

                }

            }

        }
    }

    public static Boolean IsNumber(string s)
    {
        try
        {
            Convert.ToDouble(s);
            return true;
        }
        catch (Exception e)
        {
            Console.Write("Exception Caught!" + Environment.NewLine);
            return false;
        }
    }

}

}