Write a program that calculates a customers monthly bill. It should input customer name, mailing address, telephone number, the month, which package the customer has purchased, and how many minutes were used during the month. It should then create a bill that includes the input information and the total amount due. As an incentive from the mobile phone company to its customers, the program should also display how much money Package A customers would save if they purchased packages B or C, and how much money package B customers would save if they purchased package C. If there would be no savings, no message should be printed.

Input Validation: Be sure the user only selects package A, B, or C. (Language: C++)

Rate Plan Description For $19.95 per month 200 minutes of cal time are provided. Additional usage costs $0.08 per minute. For $34.95 per month 500 minutes of cal time are provided. Additional usage costs $0.06 per minute. For $59.95 per month unlimited call time is provided