Main()

float *stdnt, *exams, *assns, *total
int stu_count, assn_count, test_count

1. Show page table

stu_count = Load( *stdnt, "stdnt.data" )
3. Show page table

//The following call will cause the 
// resulting grade array to be placed
// in a real frame.

Allocate( *total, stu_count )
4. Show page table

Load( *assns, "assns.data" )
6. Show page table

Calc( *total, *assns, .4, stu_count )
8. Show page table

Load( *exams, "exams.data" )
10. Show page table

Calc( *total, *exams, .6, stu_count )
12. Show page table

Print( *stdnt, *exams, *total, count)
14. Show page table

Exit

Load( *Array, Fname )

Open Fname

// Read 1st record of file to 
// determine number of entries 
size_info = read( Fname )

// Allocate memory to hold records to
// be read in. At this point, memory
// for the array will be placed in a
// real memory frame.
// * Allocate function is system call 
//     - not in vm space *
Allocate( *Array, size_info )

While ( Not = EOF )
  Read Fname into Array
EndWhile

2. & 5. & 9. Show page table
Return size_info

Print( *stdnt, *exams, *total, count )

  For ( ndx = 0; ndx < count; ndx++)
  Do
    // For each student, display 
    // grade info
    Display stdnt[ndx)

    Display exams[ndx];

    Display total[ndx];

  EndFor
 
13. Show page table

Return

Calc( *total, *grades, wgt, count )

// accessing stdnt array
For ndx = 0, ndx < count, ndx++
Do
  total[count] += 
    grades[count] * wgt;   
Done

7. & 11. Show page table