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example11.5
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2007-02-28
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442b
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21 lines
0010 DIM STACK(20,2), OP$ OF 4
0020 SP:=1
0030 REPEAT
0040 INPUT "POP OR PUSH?": OP$
0050 IF OP$="POP" THEN POP
0060 IF OP$="PUSH" THEN PUSH
0070 UNTIL 2=1
1000 PROC PUSH
1010 INPUT "ENTER TWO NUMBERS": LEFT',RIGHT'
1020 STACK(SP,1):=LEFT'
1030 STACK(SP,2):=RIGHT'
1040 SP:=SP+1
1050 ENDPROC PUSH
1060 PROC POP
1070 IF SP=1 THEN STOP
1080 SP:=SP-1
1090 LEFT':=STACK(SP,1)
1100 RIGHT':=STACK(SP,2)
1110 PRINT LEFT',RIGHT'
1120 ENDPROC POP