Project 5

Due July 11th at 11:59 PM

You are a business owner and you keep information on your employees stored in a text file. Each line contains the name of an employee, their employee id, the number of hours they worked during this pay period, and the hourly rate at which they are paid. Write a program which

Gets the name of input and output files from command line arguments

Reads the file using fscanf and stores the information in an array of employee structs

For each employee, calculates the net income and taxes withheld, storing it in their corresponding struct within the array

For each employee, writes the employee name, id, net income, and taxes withheld to the output file using fprintf

An employee struct must have the following members:

name string

id int

hours worked double

hourly rate double

net income double

taxes withheld double

An example execution of the program:

programName employees.txt payday.txt

Details

1. Use fscanf and fprintf to read and write data

2. You should assume that each line of the input file has the following format:

employee_last_name id hours_worked hourly_rate

Example:

rippetoe 324 23 12.50

3. Each line of the output file must have the following comma separated format:

employee_last_name,id,net_income,taxes_whitheld

Example:

rippetoe,324,244.38,43.12

4. A skeleton program is provided that is broken up into the following parts

1. employeePayroll.c

2. employee.c and employee.h

You must create a makefile that builds your program. It should contain the following rules

1. Build executable program payroll by linking employeePayroll.o and employee.o (this should be the first rule!)

2. Build employeePayroll.o by compiling employeePayroll.c

3. Build employee.o by compiling employee.c

You should use the Wall option for warnings. If you want to use GDB to debug, include the -g option. Use the slides and the makefile from previous project as examples.

Extra Credit (10pts)

Sort the employee array according to name in ascending order before writing to the output file. The recursive selectionSort function from earlier in the semester has been provided at the bottom of employeePayroll.c. Uncomment this code, adapt it to the project, and call it in main(). See the example output for what you should expect in comparison to not performing the sort. You can assume that employee names are made up entirely of lowercase letters

Suggestions

1. You can use a diff tool to compare the file output from your program to the expected, correct output. There is a diff command available on linux that will show you which lines in your file are different

diff file1 file2

will show you the lines which are different between file1 and file2. If they are identical, the command will appear to have done nothing wont do anything.

2. START ASAP AND ASK QUESTIONS.

Before you submit:

1. Make sure you follow the rules for the input/output files

2. Make sure your program begins with a comment that begins with your name

3. Your makefile should compile with c99 and the -Wall flag. -Wall shows the warnings by the compiler. Be sure it compiles on the student cluster with no errors and no warnings.

4. Test your program thoroughly with multiple different input files. Use the diff command to compare your output with the expected output

5. Place all of your source files in a zip file. The files should be in the root of the zip; not in a folder inside the zip. You can zip them on the student cluster with the following command

zip project5 *.c *.h makefile

This will place the makefile and all of the .c and .h files in your current directory into project5.zip. Submit project5.zip

Grading Details

1. A program that does not compile may result in a zero.

2. Programs which generate compiler warnings will lose 5%

3. Commenting and style worth 10%

4. Functionality worth 90%

Programming Style Guidelines

The major purpose of programming style guidelines is to make programs easy to read and understand. Good programming style helps make it possible for a person knowledgeable in the application area to quickly read a program and understand how it works.

1. Your program should begin with a comment that briefly summarizes what it does. This comment should also include your name.

2. Variable names and function names should be sufficiently descriptive that a knowledgeable reader can easily understand what the variable means and what the function does. If this is not possible, comments should be added to make the meaning clear.

3. Use consistent indentation to emphasize block structure.

4. Macro definitions (#define) should be used for defining symbolic names for numeric constants. For example: #define PI 3.141592

5. Use underscores or camel case notation to make compound names easier to read: total_volume or totalVolume is clearer than totalvolume.