Service Provider B

//Copyright Dillon Janakus 2017
//This code displays the monthly bill
//for certain service provider packages

#include <iostream>
#include <cmath>
#include <iomanip>

using namespace std;

int main()
{
    //Declare variables

    int choice=                 0; //Choice of the operator
    double minutes=             0; //Minutes used
    double addMinutes=          0; //Additional minutes used
    const int PACKMIN1=       450; //Minutes in package 1
    const int PACKMIN2=       900; //Minutes in package 2
    const float PRICE1=     39.99; //Price of package 1
    const float PRICE2=     59.99; //Price of package 2
    const float PRICE3=     69.99; //Price of package 3
    const float ADD1=        0.45; //Additional minute price of package 1
    const float ADD2=        0.40; //Additional minute price of package 2
    const int PACK_1=           1; //Package A
    const int PACK_2=           2; //Package B
    const int PACK_3=           3; //Package C
    double monthlyBill=         0; //Cost of monthly build
    double savings=             0; //Amount of savings with different package

    cout<< "Package 1: For $39.99 per month 450 minutes "
           "are provided. Additional minutes are $0.45 per minute."<<endl;
    cout<<endl;

    cout<< "Package 2: For $59.99 per month 900 minutes "
           "are provided. Additional minutes are $0.40 per minute."<<endl;
    cout<<endl;

    cout<< "Package 3: For $69.99 per month unlimited "
           "minutes provided."                                     <<endl;
    cout<<endl;

    cout<< "Which package have you purchased? (1, 2, or 3)" <<endl;
    cin>>(choice);
    cout<<endl;

       while(choice<1 || choice>3)  //Used to loop code upon invalid entry
        {
         cout<< "That is an invalid package choice, please try again."<<endl;
         cin>>(choice);
         cout<<endl;
        }


    cout<<fixed<<setprecision(2);
    switch(choice)
{
    case PACK_3:
    cout<< "Your total is $"<<PRICE3<<"."<<endl;            //Package is always same price
    return 0;
    {
    case PACK_1:
    cout<< "Enter your amount of minutes used."<<endl;
    cin>>(minutes);
    cout<<endl;

    while(minutes<0)
        {
         cout<< "Invalid number of minutes, please try again."<<endl;
         cin>>(minutes);
         cout<<endl;
        }

    if(minutes>=0 && minutes<=450)
        {
        cout<< "Your bill is $"<<PRICE1<<"."<<endl;
        }

        if(minutes>450)
            {
             addMinutes=(minutes-PACKMIN1);                 //Calculating the price for extra minutes
             monthlyBill=((addMinutes*ADD1)+PRICE1);
             cout<< "Your total cost is $"<<monthlyBill<<"."<<endl;
            }
        if(monthlyBill>PRICE3)
        {
          savings=(monthlyBill-PRICE3);
          cout<<endl;
          cout<< "You would save $"<<savings<<" if you had package 3."<<endl;
        }
            else if(monthlyBill>PRICE2)
            {
              savings=(monthlyBill-PRICE2);
              cout<<endl;
              cout<< "You would save $"<<savings<<" if you had package 2."<<endl;
            }
            return 0;

    }
    case PACK_2:
    cout<< "Enter your amount of minutes used."<<endl;
    cin>>(minutes);
    cout<<endl;

    while(minutes<0)
        {
         cout<< "Invalid number of minutes, please try again."<<endl;
         cin>>(minutes);
         cout<<endl;
        }

        if(minutes>=0 && minutes<=900)
        {
        cout<< "Your bill is $"<<PRICE2<<"."<<endl;
        }
        else if(minutes>900)
            {
             addMinutes=(minutes-PACKMIN2);
             monthlyBill=((addMinutes*ADD2)+PRICE2);
             cout<< "Your total cost is $"<<monthlyBill<<"."<<endl;
            }
        if(monthlyBill>PRICE3)
        {
          savings=(monthlyBill-PRICE3);
          cout<<endl;
          cout<< "You would save $"<<savings<<" if you had package 3."<<endl;
        }
}


    return 0;
}