C++ PROGRAM * Your input will come from a text file of at least 15 customers * I

ID: 3772104 • Letter: C

Question

C++ PROGRAM

* Your input will come from a text file of at least 15 customers
* Input file format - customerType accountNumber premiumChannels
( i.e residential example: R12345 5 , business example B12345 16 8 )
* Precision should be two decimal places
* Calculate the running average for residential and business customer spending
* Print all customer's bill to a single file and the end of the file you should have the average summary for each customer type.

Here is what i have so far.

#include <math.h>
#include <conio.h>
#include<iostream>
#include<fstream>
#include <string>
#include<stdio.h>
#include <iostream>
#include <string>
#include <fstream>
#include <cmath>
#include <iomanip>
# include <Windows.h>
# include <mmsystem.h>

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;
using namespace std;
void main()
{
   //Variable Declaration
   int accountNumber;
   char customerType;
   int numOfPremChannels;
   int numOfBasicServConn;
   double amountDue;

cout << fixed << showpoint;
cout << setprecision(2);

   cout << "This program computes a cable bill." << endl;
   cout << "Enter account number (an integer): ";
   cin >> accountNumber;
   cout << endl;

   cout << "enter customer type: "
       << "R or r (Residential), "
       << "B or b (Business)";
   cin >> customerType;
   cout << endl;

if (customerType = 'r' || 'R')
{

       cout << "Enter the number of premium channels:";
       cin >> numOfPremChannels;
       cout << endl;
       amountDue = RES_BILL_PROC_FEES
           + RES_BASIC_SERV_COST
           + numOfPremChannels * RES_COST_PREM_CHANNEL;
       cout << "Account Number: " << accountNumber;
       cout << endl;
       cout << "Amount Due: $" << amountDue << endl;
   }
   else if (customerType = 'b' || 'B')
       cout << "Enter number of basic service connections: ";
   cin >> numOfBasicServConn;
   cout << endl;
   cout << "Enter number of premium channels: ";
   cin >> numOfPremChannels;
   cout << endl;

   if (numOfBasicServConn <= 10)
       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;
   cout << "Amount Due: $" << amountDue << endl;
   cout << endl;
   system("pause");
   return ;
   }

Explanation / Answer

/**C++ progrma that opens an input file contains residential and business count
cable bills and write the account number and dues , average spending of residential
and business to output file "bill.txt"
*/

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;

double residentialTotal=0;
int residentialCount=0;

double businessTotal=0;
int businessCount=0;

cout << fixed << showpoint;
cout << setprecision(2);

   //open input file
   fstream fin;
   fin.open("customers.txt");

   //open output file
   ofstream fout;
   fout.open("bill.txt");

if(!fin)
{

       cout<<"File does not exist."<<endl;
       exit(0);
   }

fin>>customerType;

   while(!fin.eof())
   {
       if ((customerType == 'r') ||( customerType =='R'))
       {
           fin>>accountNumber>>numOfPremChannels;
           amountDue = RES_BILL_PROC_FEES
               + RES_BASIC_SERV_COST
               + numOfPremChannels * RES_COST_PREM_CHANNEL;

           //sum amount due for business
           residentialTotal+=amountDue;
           //increment the residential count
           residentialCount++;
       }
       else if ((customerType == 'b') ||( customerType =='B'))
       {

           fin>>accountNumber>> numOfBasicServConn >> numOfPremChannels;
           if (numOfBasicServConn <= 10)
               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;

           //calculate business clients
           businessCount++;
           //sum amount due for business
           businessTotal+=amountDue;
       }

       //write account number and amount due
       fout<<"Account Number: " << accountNumber<<" Amount Due: $" << amountDue << endl;
       //read customer type
       fin>>customerType;
   }

   //calculate residential and business average spending
   double residentialAvg=residentialTotal/residentialCount;
   double businessAvg=businessTotal/businessCount;

fout<<"Residential average spending "<<residentialAvg<<endl;
fout<<"Business average spending "<<businessAvg<<endl;

fin.close();
fout.close();

system("pause");
return ;
}

-------------------------------------------------------------------------------------

R 12345 5
B 12345 16 8
R 12345 5
B 12345 16 8
B 12345 16 8
B 12345 16 8
B 12345 16 8
B 12345 16 8
B 12345 16 8
B 12345 16 8
B 12345 16 8
R 12345 5
R 12345 5
R 12345 5
R 12345 5

---------------------------------------------------------------------------

bill.txt output file

Account Number: 12345 Amount Due: $62.5
Account Number: 12345 Amount Due: $520
Account Number: 12345 Amount Due: $62.5
Account Number: 12345 Amount Due: $520
Account Number: 12345 Amount Due: $520
Account Number: 12345 Amount Due: $520
Account Number: 12345 Amount Due: $520
Account Number: 12345 Amount Due: $520
Account Number: 12345 Amount Due: $520
Account Number: 12345 Amount Due: $520
Account Number: 12345 Amount Due: $520
Account Number: 12345 Amount Due: $62.5
Account Number: 12345 Amount Due: $62.5
Account Number: 12345 Amount Due: $62.5
Account Number: 12345 Amount Due: $62.5
Residential average spending 62.5
Business average spending 520

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