public static int CalculateDiscount(RecipeLineItem[] input)
{
float regularPrice = 0.0f;
float discountedPrice = 0.0f;
foreach (RecipeLineItem rli in input)
{
regularPrice += CalculateIngredientExtendedPrice((float)rli.Ingredient.Cost, rli.Units);
discountedPrice += CalculateIngredientExtendedPrice(CalculateIngredientDiscountedPrice(rli.Ingredient), rli.Units);
}
return (int)Math.Round(regularPrice - discountedPrice, MidpointRounding.AwayFromZero);
}
public static int CalculateTax(RecipeLineItem[] input)
{
int output = 0;
foreach (RecipeLineItem rli in input)
{
float extendedPrice = CalculateIngredientExtendedPrice(CalculateIngredientDiscountedPrice(rli.Ingredient), rli.Units);
int tax = CalculateIngredientTax(rli.Ingredient, extendedPrice);
output += tax;
}
return output;
}
public static int CalculateTotal(RecipeLineItem[] input)
{
float totalPrice = 0.0f;
int tax = 0;
foreach (RecipeLineItem rli in input)
{
float extendedPrice = CalculateIngredientExtendedPrice(CalculateIngredientDiscountedPrice(rli.Ingredient), rli.Units);
tax += CalculateIngredientTax(rli.Ingredient, extendedPrice);
totalPrice += extendedPrice;
}
return tax + (int)Math.Round(totalPrice, MidpointRounding.AwayFromZero);
}