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<center>CMSC201<br>
Programming Project One<p>
Grade Point Average</center>
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<b>
Out: Tuesday 9/23/97<br>
Due: Midnight Tuesday 10/7/97
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<h2> The Objective </h2>

The objective of this assignment is to make sure that you have learned enough 
about C and the UNIX system to write a simple program, compile it, run it and 
turn it in using submit.  In particular, it will give you some practice using 
several data types and will require the use of a while loop that terminates 
on the input of a sentinel value.


<h2> The Explanation </h2>

This program will allow you to calculate your GPA for one semester.  
Some students like to double check their GPA just to make sure the registrar
hasn't made any mistakes. :-)  After receiving an explanation of the program 
and entering the semester, the student will be allowed to enter as many 
courses as he/she sees fit.  The program must then calculate and display the 
GPA earned for that semester.

<P>
In order to produce the GPA, several calculations are needed.  For each course,
the number of credits, multiplied by the grade point earned in that class, 
results in a value known as quality points.  To calculate the GPA, the total 
number of quality points for the semester is divided by the total number of 
credits taken that semester, exclusive of credits for courses taken with the 
Pass/Fail grading method.  Your program should <B>NOT</B> handle Pass/Fail 
courses at all.  The only acceptable grade points are in the range of 0 through
4, where 4 is an A, 3 a B, 2 a C, 1 a D, and 0 an F.  For this assignment, both
the grade points and the number of credits for each course, should be entered 
as integers and gotten from the user with the GetInteger() function.

<P>
To begin you should print a message to the user explaining what the program
does.  Then you should ask the user to enter the semester.  After these initial
steps, you should begin asking the user to enter the  number of credits and 
grade points for each course, one course at a time.  The user should enter
a -1 as the number of credits to end the input phase.  So -1 is the
sentinel value for this exercise.  At this point a report should be generated 
that shows the total number of credits taken, the total quality points earned, 
and the GPA for the semester.
<P>
Your program must generate all of the same information as shown in the
sample run.  You do not need to match the output exactly, however the GPA
should be shown to three decimal places.  You may also use the data shown here 
to test your program for accuracy.  

<h2> The Sample Run </h2>
<xmp>
umbc9[1]% a.out
This program will calculate your GPA for one semester.  
You will be asked to enter the number of credits and grade 
points earned for each course taken that was graded using the 
regular grading method.  Please do NOT enter Pass/Fail 
courses, since they do not effect the GPA.  Grade points are 
4 for an A, 3 for a B, 2 for a C, 1 for a D, and 0 for an F.  

Enter semester: Spring 1997

First course:
Enter number of credits (-1 to end): 4
Enter grade points: 3

Next course:
Enter number of credits (-1 to end): 4
Enter grade points: 4

Next course:
Enter number of credits (-1 to end): 3
Enter grade points: 2

Next course:
Enter number of credits (-1 to end): 3
Enter grade points: 3

Next course:
Enter number of credits (-1 to end): 3
Enter grade points: 2

Next course:
Enter number of credits (-1 to end): -1



GPA Report for Spring 1997

Credits taken: 17
Quality points earned: 49
  
GPA for Spring 1997: 2.882

umbc9[2]% 
</xmp>
  

<h2> Submitting the Program </h2>
<P>
To submit the file you should use the command:
<P>
<B>submit cs201 proj1 proj1.c</B>
<P>
You can check your submission by using the command:
<P>
<B>submitls cs201 proj1</B>

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Monday, 22-Sep-1997 11:44:09 EDT