Question

CSCI 1470
Lab 5 Assignment #3

Topic: Selection (switch statement))
Reading: Chapter 4
Point Value: 15 points

*Note: Include the following set of comments at the top of your source code for all assignments.

//Your Name

//Brief description of the purpose of the program (Example: Displays student information.)

Assignment: (Save this file as Lab5-3-YourLastName.cpp) A mobile phone service provider has three different subscription packages for its customers:

Package A:	For $39.99 per month 450 minutes are provided. Additional minutes are $0.45 per minute.
Package B:	For $59.99 per month 900 minutes are provided. Additional minutes are $0.40 per minute.
Package C:	For $69.99 per month unlimited minutes provided.

      Write a program that calculates and displays a customer’s monthly bill. Prompt for the customer’s name, the month being billed, which package the customer purchased and how many minutes were used. Display the customer’s bill as shown below in the sample output.

Display a menu to allow the user to enter the desired subscription package. Use a switch statement to calculate the monthly charge based on the package chosen.

1. Display an “ERROR MESSAGE” if the minutes entered is less than 0. (The customer cannot use a negative amount of time.)
2. Use the appropriate symbolic constants.

Sample Input/Output:

Please enter the customer's name: Sue Lee

Please enter the current billing month: July

How many minutes were used? 560

Select a subscription package:

1. Package A

2. Package B

3. Package C

4. Quit

Menu Option: 1

The Mobile Phone bill for July

Customer's Name: Sue Lee

Minutes Used: 560

Amount Due: $89.49

Another Sample Input/Output:

Please enter the customer's name: Lisa Miles

Please enter the current billing month: August

How many minutes were used? 700

Select a subscription package:

1. Package A

2. Package B

3. Package C

4. Quit

Menu Option: 7

The valid choices are 1 through 4. Run the

program again and select one of those.

Another Sample Input/Output:

Please enter the customer's name: John Jones

Please enter the current billing month: May

How many minutes were used? 800

Select a subscription package:

1. Package A

2. Package B

3. Package C

4. Quit

Menu Option: 3

The Mobile Phone bill for May

Customer's Name: John Jones

Minutes Used: 800

Amount Due: $69.99

Another Sample Input/Output:

Please enter the customer's name: Karen Hill

Please enter the current billing month: June

How many minutes were used? 500

Select a subscription package:

1. Package A

2. Package B

3. Package C

4. Quit

Menu Option: 4

Program ending.

Another Sample Input/Output:

Please enter the customer's name: Jill Mills

Please enter the current billing month: May

How many minutes were used? 350

Select a subscription package:

1. Package A

2. Package B

3. Package C

4. Quit

Menu Option: 1

The Mobile Phone bill for May

Customer's Name: Jill Mills

Minutes Used: 350

Amount Due: $39.99

Another Sample Input/Output:

Please enter the customer's name: Josh Hayes

Please enter the current billing month: March

How many minutes were used? 850

Select a subscription package:

1. Package A

2. Package B

3. Package C

4. Quit

Menu Option: 2

The Mobile Phone bill for March

Customer's Name: Josh Hayes

Minutes Used: 850

Amount Due: $59.99

Grading Criteria:

· If program does not run, then 0 points for lab grade.

· -1 point – if no name or description of code

· -1 point – if no named constants are used

· -2 points – for inaccurate output item (Amount Due)

· -1 point – for output items not displayed in sample report (Customer Name, Month, Minutes Used, Amount due)

· -2 points – If no input validation with error message for number of minutes

· -1 point – if money values are not displayed with 2 decimal position

· -2 points – If menu is not displayed for user

Answer 1

Please comment, if you need any corrections.Please give a Thumps up if you like the answer.

Program

#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
   const double PACK_A = 39.99; //constant to hold price of pack A
   const double PACK_B = 59.99; //constant to hold price of pack B
   const double PACK_C = 69.99; //constant to hold price of pack C

   int menu_choice;
   float total;
     
   int mins_used;
   string cust_name,bill_month;
   cout<<"Please enter the customer's name: ";
   getline(cin, cust_name);
   cout<<"Please enter the current billing month: ";
   cin>>bill_month;
   cout << "How many mins_used were used? ";
cin >> mins_used;
   cout<<"Select a subscription package:"<<endl<<"1. Package A"<<endl<<"2. Package B"<<endl<<"3. Package C"<<endl<<"4. Quit"<<endl;
cout << "Menu Option: ";
cin >> menu_choice;
  
  
   if (menu_choice >= 1 && menu_choice <= 4)
   {
  
   switch(menu_choice){
case 1: //if user has chosen package A
total += PACK_A; //add A's price to total
if(mins_used>450)
total += (mins_used-450)*0.45; //add to total price of extra mins_used if there are any
break; //break statement to prevent fall-through
case 2: //if user has chosen package B
total += PACK_B; //add B's price to total
if(mins_used>900)
total += (mins_used-900)*0.40; //add to total price of extra mins_used if there are any
break; //break statement to prevent fall-through
case 3: //if user has chosen package C
total += PACK_C; //add C's price to total
break; //break statement to prevent fall-through
   case 4:
       cout<<"Program ending."<<endl;
       exit(0);
}
   cout<<"The Mobile Phone bill for "<<bill_month<<endl;
   cout<<"Customer's Name: "<<cust_name<<endl;
   cout<<"Minutes Used: "<<mins_used<<endl;

//set fixed precision for formatting
cout << setprecision(2) << fixed << showpoint;

//print total owed to company on screen
cout <<"Amount Due: $"<<total<<endl;
}
else{ //following block will execute if menu_choice>4
cout << "The valid choices are 1 through 4. Run the program again and select one of those." << endl;
}
return 0;
}

Output

Please enter the customer's name: Josh Hayes
Please enter the current billing month: March
How many mins_used were used? 850
Select a subscription package:
1. Package A
2. Package B
3. Package C
4. Quit
Menu Option: 2
The Mobile Phone bill for March
Customer's Name: Josh Hayes
Minutes Used: 850
Amount Due: $59.99