Create an E-Book Sales program. The program prompts the user to enter the number of e-books ordered. You must use a loop to validate the number of books entered. It must be a positive value.Use the...

Create an E-Book Sales program. The program prompts the user to enter the number of e-books ordered. You must use a loop to validate the number of books entered. It must be a positive value.Use the following information to calculate the total sales price.

Number of e-books Price ($) per copy

10-20 8.5

21-30 6.5

>30 5.5

In addition, if the sales price is greater than $200 then there is an additional discount of a 15% of the sales price. The final sales price needs to add WA sales tax of an 8.6%. The final sales price (formatted) is displayed to the screen and also written to disk.