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#include <iostream>
using namespace std;

//Constants of resident and business plans
const double r_process_fee = 4.50, b_process_fee = 15.00;
const double r_service_fee = 20.50, b_service_fee = 75.00;
const double r_channel = 7.50, b_channel = 50.00;

int main(){
//declaration
    int accountNumber = 0;
    char r_or_b;
    int channelNumbers = 0;
    int b_connection = 0;//for business rule
    double totalAmount = 0;

//Input
    cout<<fixed<<showpoint;
    cout<<setprecision(2);
    cout<<"This program computes a cable bill."<<endl;

    cout<<"Ennter your Account Number"<<endl;
    cin>>accountNumber;

    cout<<"Entr your Customer Type ('r' for Resident, 'b' for Business)"<<endl;
    cin>>r_or_b;

    switch(r_or_b)
    {
    case 'r':
        //entry
        cout<<"Enter the number of premium channels"<<endl;
        cin>>channelNumbers;

        //Cal.
        totalAmount = r_process_fee + r_service_fee + (r_channel * channelNumbers);

        //result
        cout<<"Account Number: "<<accountNumber<<endl;
        cout<<"Total Amount: $"<<totalAmount<<endl;
        break;
   
    case 'b':
        //entry
        cout<<"Enter the number of basic service connections"<<endl;    //extra entry for business plan
        cin>>b_connection;

        cout<<"Enter the number of premium channels"<<endl;
        cin>>channelNumbers;

        //Cal.
        if ( b_connection <= 10)
        {
            totalAmount = b_process_fee + b_service_fee + ( channelNumbers * b_service_fee );
        }
        else
        {
            totalAmount = b_process_fee + b_service_fee + ( (b_connection - 10) *  b_service_fee ) + ( channelNumbers * b_service_fee );
        }
       
        //result
        cout<<"Account Number: "<<accountNumber<<endl;
        cout<<"Total Amount: $"<<totalAmount<<endl;
        break;
    default:
        cout<<"Wrong Customer Type, You must enter eith 'r' or 'b'"<<endl;
        break;
    }//end of switch

    return 0;

}//end of main()

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