POP(STACK, TOP, ITEM): This procedure deletes the top element of STACK and assigns it to the variable ITEM
1. [Stack has an ITEM to be remove?]
If TOP = 0, then: Print:UNDERFLOW, and Return.
3. Set ITEM: =.STACK[TOP] [Assigns top element to ITEM]
2. Set TOP: = TOP -1. [Decrease top by 1 ].
4. Return.
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1. [Stack has an ITEM to be remove?]
If TOP = 0, then: Print:UNDERFLOW, and Return.
3. Set ITEM: =.STACK[TOP] [Assigns top element to ITEM]
2. Set TOP: = TOP -1. [Decrease top by 1 ].
4. Return.
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