C++ :: How To Implement Discounts - Calculate Shipping / Handling

How to implement the discounts and the shipping and handling

The store sells chocolates:
•Milk Chocolate @ $8.50 per pound
•Dark European Chocolate @ $9.75 per pound
•White Chocolate @ $10.50 per pound
•European Truffles @ $12.50 per pound

The store allows a customer discount based on:
1.$20.00 to $39.99 10% off
2.$40.00 to $59.9915% off
3.$60.00 to $79.9920% off
4.$80.00 and over25% off

Shipping & Handling is 10% of the net total (gross – discount).
Total Owed is Net Total plus Shipping and Handling)

You are using the switch to calculate the quantity discount. Since the switch does not allow a range, you have to set a “code” for the quantity range to use in the Switch such as and integer code 1, 2, 3, or 4 or maybe a char ‘a’, ‘b’, ‘c’ or ‘d’.

#include <iostream>
#include <conio.h>
using namespace std;
int main () {
int choice; // Hold a menu of choice
int pounds; // Hold the number of pounds
double charges; // Hold the price range
float discount; //Hold discount range

[Code] .....