Geekware Software Company$$s biggest seller software package sells for $$149$ each. Quantity discounts are given according to the following table:

Quantity Discount

$1-9$ None

$10-4910\%$

$50-9920\%$

$100-14930\%$

$150$ or more $40\%$

Goal:

Write a program that asks the user to enter the number of packages purchased. If the number entered is valid $($not negative and not zero$),$ the program should then display the dollar amount of the discount $($if any$)$ and the total amount of the purchase after discount.$$

Design:

You will be using a flow chart to design your program. $$

Input Validation:

The number of packages entered by the user must not be negative or zero. If the user inputs a fractional number, the code should convert it to a whole number.$$

Output and Sample Dialog:

If an invalid number of packages is entered, the message Invalid

number of packages! must be shown and the program should terminate. Otherwise, your program

should use F$-$strings to produce correctly labeled output with dollar

amounts rounded to two decimal places and dollar signs displayed

Enter the number of packages purchased: $53$

Discount amount: $$1,579\mathrm{.}40$

Total after discount: $$6,317\mathrm{.}60$

Requirements:

$$ Use named constants for all number values that will not be changed in the program

$$ Use F$-$strings