This program must be written in C++.

Write a program in C++ that calculates a customers monthly bill for a mobile data service. Our mobile data service provider has three different packages for its customers: Package A: For $19.99 per month 2500 megabytes of data are provided. Additional megabytes are $0.05 per megabyte. However, if more than 75% of the data usage by the customer occurs on the weekend, the additional megabytes are only $0.03 per megabyte. Package B: For $29.99 per month, 5000 megabytes of data are provided. Additional megabytes are $0.01 per megabyte. There is no discount for weekend usage. Package C: For $39.99 per month, unlimited megabytes of data are provided. You program should prompt which package the customer has purchased and how many megabytes are used. In addition, if the customer purchased Package A and has used more than the allowed 2500 megabytes, the program should additionally prompt if the customer used more than 75% of the data on the weekend. However, if the customer did not purchase Package A or did purchase Package A but used 2500 or less megabytes, do not ask the question about weekend usage. When asking for the package, the program should expect a single upper or lower case A, B, or C. However, the program should tolerate invalid input from the user. In particular, if the user of the program just hits without providing an A, B, or C, the program should print a message to the user and terminate. Or, if the user enters a character other than A, B, or C, the program should print a message to the user and terminate. However, if the user enters additional text following the A, B, or C, the program should ignore that additional text and continue processing. For example, if the user enters ASTUFF as the purchased package, your program should interpret that input to mean the customer purchased package A and ignore the remaining text. When asking for the number of megabytes used, the program should expect an integer. The program must ensure the entered value is non-negative. If the user enters additional text following the integer or enters a floating point number, the program should ignore that additional text or fractional value and continue processing. When asking about weekend usage, the program should expect an upper or lower case Y or N. It should print a message if the user didnt enter either Y or N and should ignore any additional characters following the Y or N. With all this input, the program should calculate the monthly charge for the user and display that value, with the $ currency symbol and always with two decimal places, to the screen.

Additionally, if the customer purchased Package A, the program should calculate the costs for Package B and Package C and display the savings if the customer purchased Package B and/or Package C if and only if Package B or Package C would save the customer money. If both Package B and Package C would save the customer money, display the savings for both packages. Or, if the customer purchased Package B, the program should calculate the cost for Package C and display the savings if the customer purchased Package C, if and only if, Package C would save the customer money.

Sample Run:

This capture shows an example of running the program. Note the instructor has chosen to output additional information to aid the user and confirm what was input. That is acceptable.

Enter A, B, or C to indicate the plan purchased by the user:

A - $19.99 per month with 2500 megabytes. $0.05 per additional megabyte, but only $0.03 per additional megabyte if more than 75% of the data was used on weekends

B - $29.99 per month with 5000 megabytes. $0.01 per additional megabyte

C - $39.99 per month for unlimited megabytes.

A

You selected Package: A

Please enter the amount of data used by the customer

Should be a whole, non-negative number): 9000

You entered: 9000 megabytes

Did the customer use more than 75% of the data

on the weekend? (Y/N)n

Customer will receive a weekend discount: false

The customer's cost for the month is $344.99

Customer would have saved $275.00 on Package B

Customer would have saved $305.00 on Package C