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Programming Logic

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Find bugs.

// The two senior class homerooms at Littleville High School
// are having a fundraising drive for the prom. Each time a student
// solicits a contribution, a record is created with the
// student's name and the value. Two files have been created for Homeroom A and Homeroom B. 
// Each file is sorted in contribution value order from highest to lowest.
// This program merges the two files.
start
   // Declarations
      string roomAName
      num roomAValue
      string roomBName
      num roomBValue

      string bothFilesDone = "N"
      string HIGHVALUE = "XXXXX"
      InputFile roomAFile
      InputFile roomBFile
      OutputFile mergedFile
   getReady()
   while bothFilesDone = "N"
      detailLoop()
   endwhile
   allDone()
stop

getReady()  
   open roomAFile "roomAFile.dat"
   open roomBFile "roomBFile.dat"
   open mergedFile "mergedFile.dat"
   readA()
   readA()
   checkBoth()
return

readA()
   input roomAName, roomAValue from roomAFile
   if eof then
      roomAValue = HIGHVALUE
   endif
return

readB()
   input roomBName, roomBValue from roomBFile
   if eof then
      roomBValue = roomAValue
   endif
return

checkBoth()
   if roomAValue = HIGHVALUE AND roomAValue = HIGHVALUE then
      bothFilesDone = "Y"
   endif
return

detailLoop()
   if roomAName > roomBName then
      output roomBName, roomBValue to mergedFile
      readB()
   else
      output roomAName, roomAValue to mergedFile
      readA()
   endif
   checkBoth()
return
 
allDone()
   close roomAFile
   close roomBFile
   close mergedFile
return 

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