Concept explainers
Mobile Service Provider
A mobile phone service provider has three different data plans for its customers:
Package A: For $39.99 per month, 4 gigabytes are provided. Additional data costs $10 per gigabyte.
Package B: For $59.99 per month, 8 gigabytes are provided. Additional data costs $5 per gigabyte.
Package C: For $69.99 per month, unlimited data is provided.
Write a
Input Validation: Be sure the user only selects package A, B, or C.
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