C++ Project For a Cable Billing Company

Program: Cable Company Billing
This program calculates and prints a customer's bill for a local cable company.
The program processes two types of
customers: residential and business.

#include <iostream>
#include <iomanip>
using namespace std;
//Named constants – residential customers
const double RES_BILL_PROC_FEES = 4.50;
const double RES_BASIC_SERV_COST = 20.50;
const double RES_COST_PREM_CHANNEL = 7.50;
//named constants – business customers
const double BUS_BILL_PROC_FEES = 15.00;
const double BUS_BASIC_SERV_COST = 75.00;
const double BUS_BASIC_CONN_COST = 5.00;
const double BUS_COST_PREM_CHANNEL = 50.00;
int main()
{
//Variable declaration
int accountNumber;
char customerType;
int numOfPremChannels;
int numOfBasicServConn;
double amountDue;
cout << fixed << showpoint; //Step 1
cout << setprecision(2); //Step 1
cout << "This program computes a cable "
<< "bill." << endl;
cout << "Enter account number ( an integer): "; //Step 2
cin >> accountNumber; //Step 3
cout << endl;
cout << "Enter customer type: "
<< "R or r (Residential), "
<< "B or b ( Business): "; //Step 4
cin >> customerType; //Step 5
cout << endl;
switch (customerType)
{
case 'r': //Step 6
case 'R':
cout << "Enter the number"
<< " of premium channels: "; //Step 6a
cin >> numOfPremChannels; //Step 6b
cout << endl;
amountDue = RES_BILL_PROC_FEES //Step 6c
+ RES_BASIC_SERV_COST
+ numOfPremChannels *
RES_COST_PREM_CHANNEL;
cout << "Account number : "
<< accountNumber
<< endl; //Step 6d
cout << "Amount due: $"
<< amountDue
<< endl; //Step 6d
break ;
case 'b': //Step 7
case 'B':
cout << "Enter the number of ba sic "
<< "service connections: "; //Step 7a
cin >> numOfBasicServConn; //Step 7b
cout << endl;
cout << "Enter the number"
<< " of premium ch annels: "; //Step 7c
cin >> numOfPremChannels; //Step 7d
cout << endl;
if (numOfBasicServConn<= 10) //Step 7e
amountDue = BUS_BILL_PROC_FEES
+ BUS_BASIC_SERV_COST
+ numOfPremChannels *
BUS_COST_PREM_CHANNEL;
else
amountDue = BUS_BILL_PROC_FEES
+ BUS_BASIC_SERV_COST
+ (numOfBasicServConn - 10) *
BUS_BASIC_CONN_COST
+ numOfPremChannels *
BUS_COST_PREM_CHANNEL;
cout << "Account number: "
<< accountNumber << endl; //Step 7f
cout << "Amount due: $" << amountDue
<< endl; //Step 7f
break ;
default:
cout << "Invalid customer type." << endl; //Step 8
}//end switch
system("pause");
return 0;
}