My Design for Homework 3

Objectives

1. Discuss a possible design for homework 3.

Notes

Main
    Begin Processing
    Process the grades for homework
    Process the grades for groupwork 
        NOTE: Both of these have the same structure/routine
    Process Grades for tests
    Process Final Exam Grade
    Process Class Average
    Process Class Grade

 Begin Processing
   Input: None
   Ouptut: Open File descriptor

   Open the File
   Read the name from the file
   Print Name line

 Process Grades
   Input:  The open file descriptor
           The type of work (Homework, Groupwork), a string
   Output: The final average, a float
           A boolean flag, true if homework was present

   set  score to 0
   set  available to 0
   from the file read in numerator, slash, denominator
   while denominator is not zero
       score += numerator
       available += denominator
       from the file read in numerator, slash, denominator

    
   if denominator = 0
       print not present line
       valid = false
   else
       print average
       valid = true

 Process Tests
   Input: The open file descriptor
   Output: The test average
           Boolean flag, true if tests were present

   Read number of tests from file.
   set average to  be 0

   for each test    
       read score from file
       add score to average

   if number of tests > 0
       valid = true
       average = average / number of tests
       Print test average
   else
       valid =  false
       Print not present line

Process Final
   Input: The open file descriptor
   Output: The test average
           A boolean flag, true if a final was present.

   read the final flag from the file
   if the final flag is y
      read the final score from the file
      valid = true
      print the final line
   else
      print the not present line
      valid = false

 Process Class Average
    Input: The open file descriptor
           The homework average, flag
           The groupwork average, flag
           The test average, flag
           The Final average, flag

     Output :  Class average
               Valid, a boolean flag.

     read in the weights
     avaiable = 0
     points = 0 

     Note: These are all the same, build a function to do this.
     if the homework is valid
        Add homework weight to available
        Add homework average * homework weight to points
     if the groupwork is valid
        Add groupwork weight to available
        Add homework average * groupwork weight to points
     if the tests is valid
        Add tests weight to available
        Add tests average * tests weight to points
     if the final is valid
        Add final weight to available
        Add final average * final weight to points

     If  avialable > 0
        Compute class average:  points/avilable
        valid = true
        Pint Class average line
     else
        valid = false
        Print not present line.
    
Process Class Grade
    Input: The open file descriptor
           The class average
           A boolean flag if average is valid
    Output: None

    if the average is valid
       Read in the grade minimums from the file
       If the average >= A limit
          Print A
       else if the average >= B limit
          Print B
       else if the average >= C limit
          Print C
       else if the average >= D limit 
          Print D
       else 
          Print F
    else
       Print not present line