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Lectures include a case study that illustrates the software development process. This approach may seem overly elaborate for small programs, but it scales up well when programs become larger. The first case study develops a program that calculates income tax.

Each year nearly everyone with an income faces the unpleasant task of computing his or her income tax return. If only it could be done as easily as suggested in this case study. We start with the customer request phase.

(Lambert 43)

Lambert, Kenneth A. Fundamentals of Python: From First Programs through Data Structures, 1e. Cengage Learning, 01/2009. VitalBook file.

Use this case study to do your first program. Next week I will post an assignment that needs as reference this case study.

n each of the projects that follow, you should write a program that contains an introductory docstring. This documentation should describe what the program will do (analysis) and how it will do it (design the program in the form of a pseudocode algorithm). Include suitable prompts for all inputs, and label all outputs appropriately. After you have coded a program, be sure to test it with a reasonable set of legitimate inputs. Your results along with the code must be submitted using blackboard for grading.

1. The tax calculator program of the case study outputs a floating-point number that might show more than two digits of precision. Use the round function to modify the program to display at most two digits of precision in the output number.
2. employee’s total weekly pay equals the hourly wage multiplied by the total number of regular hours plus any overtime pay. Overtime pay equals the total overtime hours multiplied by 1.5 times the hourly wage. Write a program that takes as inputs the hourly wage, total regular hours, and total overtime hours and displays an employee’s total weekly pay.