Design a program to calculate telephone bills if the bills are computed as follows:
Minimum $7.50 for the first 80 message units
Plus .06/unit for the next 60 units
Plus .05/unit for the next 60 units
Plus .04/unit for any units beyond 200
Design a program to do the following:
An educational institution has employees classified as follows:
Each group’s pay is calculated differently. Use IF method and include error routine.