Untitled

using System;

class Program
{
    // dDiscount function to calculate and return discount percent based on quantity and line price
    static double Discount(int iQty, double dLinePrice)
    {
        // Check the conditions for discount
        if (dLinePrice > 1000)
        {
            return 15.0;  // 15% discount if line price exceeds 1000
        }
        else if (dLinePrice > 500 || iQty > 10)
        {
            return 10.0;  // 10% discount if line price exceeds 500 or quantity exceeds 10
        }
        else
        {
            return 0.0;  // No discount
        }
    }

    // Price function calculates the final discounted price including tax
    static double Price(int iQty, double dUnitPrice)
    {
        const double Tax = 0.25;  // Define the tax factor

        // Calculate line price
        double dLinePrice = iQty * dUnitPrice;

        // Call dDiscount function to get the discount percentage
        double dDiscPere = Discount(iQty, dLinePrice);

        // Calculate discount amount
        double dDiscountAmount = dLinePrice * (dDiscPere / 100);

        // Calculate net price after discount
        double dNetPrice = dLinePrice - dDiscountAmount;

        // Apply the tax to the net price
        double dFinalPrice = dNetPrice * (1 + Tax);

        return dFinalPrice;
    }

    static void Main(string[] args)
    {
        // User input for quantity and unit price
        Console.Write("Enter the number of units: ");
        int iQty = int.Parse(Console.ReadLine());

        Console.Write("Enter the unit price: ");
        double dUnitPrice = double.Parse(Console.ReadLine());

        // Calculate the final price using the Price function
        double dFinalPrice = Price(iQty, dUnitPrice);

        // Output the final discounted price including tax
        Console.WriteLine($"The final price after discount and tax is: {dFinalPrice:C2}");
    }
}