This command will remove the first item of data from the array queue.

REMOVE FROM QUEUE Array Name(0)

Array Name(0

Integer
The name of the array followed by a pair of brackets ( ). You can also insert a value of zero, i.e. arrayname(0)

This command does not return a value.

Queues are a first in, first out data structure. You can imagine a queue as a line of people waiting for the bus. The last item of data added will be the last item of data to come off the queue.

EXAMPLE=dim a() as integer

empty array a()



print "Add 5 items to the queue"

for i=1 to 5

   n = rnd(1000)

   print "  Adding "; n; " to the queue"

   add to queue a()

   a() = n

next i



print

PrintQueue()

print

print "Pop 2 items from the queue"



for i=1 to 2

   print "  Removing "; a(0); " from the queue"

   remove from queue a()

next i



print

PrintQueue()

print



print "Add 5 more entries to the queue"

for i=0 to 4

   n = rnd(1000)

   print "  Adding "; n; " to the queue"



   add to queue a()

   a() = n

next i



print

PrintQueue()

print



print "Now remove items until the queue is empty"

while array index valid( a() )

   print "  Removing "; a(0); " from the queue"

   remove from queue a()

endwhile



print

PrintQueue()



wait key

end



function PrintQueue()

   if array count( a() ) >= 0

      print "The queue has "; array count( a() )+1; " items"

      for i=0 to array count( a() )

         print "  Item "; i; " = "; a(i)

      next i

   else

      print "The queue is empty"

   endif

endfunction

CORE Commands Menu
Index