this is c++

You work for a local box company. This company ships large boxes and crates across the country. You have been tasked with making the cashiers' lives easier by creating a calculator that takes the size of the crate and the cost per cubic foot and determine the customer's cost. Requirements: You will ask the user for the width, length and height of the package The program will then calculate the volume and display the volume The volume will then be calculated against the standard rate of $2.50 per cubic foot and display that number Because we live in California, the program then calculate the sales tax of .0775 per dollar and display that number A total will be calculate and displayed. This creates the invoice for the transaction. Things to remember: I want clean code. This means that it must be readable. If you are unclear about this