Write a simple and very basic C$++$ program $($using array$)$:

Exercise #$4$: Sales Calculator

A company makes sales on their products. They need a program to help them to calculate the prices after

the discount and print out a receipt for the customer that contains the following information:

Original price.

Discount rate.

Discount amount.

Price after discount.

The main program prompts the cashier to enter the original price and the discount rate, calls the function

CalculateDiscount$(),$ calculates the net price, the calls the function PrintReceipt$()$ to print the receipt.

double CalculateDiscount $($double$,$ double$).$

void PrintReceipt $($double$,$ double, double, double$)$

Sample input $/$ output:

Enter the original price: AED $500$

Enter discount rate: $5\mathrm{.}5$

Receipt

Original Price: $500$ AED

Discount Rate: $5\mathrm{.}5\%$

Discount Amount: $27\mathrm{.}5$ AED

Net Price: $472\mathrm{.}5$ AED