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struct="atomic" id="7"></list></costumes><sounds><list struct="atomic" id="8"></list></sounds><variables></variables><blocks></blocks><scripts></scripts><sprites select="1"><sprite name="Sprite" idx="1" x="0" y="-4.47659410224575e-14" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="0" color="80,80,80,1" pen="tip" id="13"><costumes><list struct="atomic" id="14"></list></costumes><sounds><list struct="atomic" id="15"></list></sounds><blocks></blocks><variables></variables><scripts><script x="73" y="82.83333333333334"><block s="receiveGo"></block><block s="doSetVar"><l>codeList</l><block s="reportNewList"><list></list></block></block><block s="doRepeat"><l>12</l><script><block s="doAsk"><l>enter digits of the UPC code one at  time</l></block><block s="doAddToList"><block s="getLastAnswer"></block><block var="codeList"/></block></script></block><block s="doSetVar"><l>oddSum</l><l>0</l></block><block s="doFor"><l>i</l><l>1</l><block s="reportListAttribute"><l><option>length</option></l><block var="codeList"/></block><script><block s="doIf"><block s="reportVariadicEquals"><list><block s="reportModulus"><block var="i"/><l>2</l></block><l>1</l></list></block><script><block s="doSetVar"><l>oddSum</l><block s="reportVariadicSum"><list><block var="oddSum"/><block s="reportListItem"><block var="i"/><block var="codeList"/></block></list></block></block></script><list></list></block></script></block><block s="doSetVar"><l>oddSum</l><block s="reportVariadicProduct"><list><block var="oddSum"/><l>3</l></list></block></block><block s="doFor"><l>i</l><l>1</l><block s="reportListAttribute"><l><option>length</option></l><block var="codeList"/></block><script><block s="doIf"><block s="reportVariadicAnd"><list><block s="reportVariadicEquals"><list><block s="reportModulus"><block var="i"/><l>2</l></block><l>0</l></list></block><block s="reportNot"><block s="reportVariadicEquals"><list><block var="i"/><l>12</l></list></block></block></list></block><script><block s="doSetVar"><l>evenSum</l><block s="reportVariadicSum"><list><block var="evenSum"/><block s="reportListItem"><block var="i"/><block var="codeList"/></block></list></block></block></script><list></list></block></script></block><block s="doSetVar"><l>savedSum</l><block s="reportVariadicSum"><list><block var="evenSum"/><block var="oddSum"/></list></block></block><block s="doSetVar"><l>checkDigit</l><block s="reportVariadicSum"><list><block var="savedSum"/><block s="reportListItem"><l><option>last</option></l><block var="codeList"/></block></list></block></block><block s="doIfElse"><block s="reportVariadicEquals"><list><block s="reportModulus"><block var="checkDigit"/><l>10</l></block><l>0</l></list></block><script><block s="doSayFor"><l>YES</l><l>5</l></block></script><script><block s="doSayFor"><l>NO</l><l>5</l></block><block s="doSayFor"><block s="reportJoinWords"><list><l>to be valid the checkDigit needs to be  </l><block s="reportDifference"><l>10</l><block s="reportModulus"><block var="savedSum"/><l>10</l></block></block></list></block><l>2</l></block></script></block></script></scripts></sprite><watcher var="codeList" style="normal" x="7.838638801723489" y="62.28734432097846" color="243,118,29" extX="80" extY="228"/><watcher var="oddSum" style="normal" x="3.0014284321090403" y="4.1827245764899486" color="243,118,29"/><watcher var="evenSum" style="normal" x="4.18272457648968" y="16.19532567173595" color="243,118,29"/><watcher var="savedSum" style="normal" x="2.9122231337167577" y="28.113207547169814" color="243,118,29"/><watcher var="checkDigit" style="normal" x="0.9433962264156912" y="40.05660577358491" color="243,118,29"/><watcher var="changeVariableBy1" style="normal" x="1.9688269073010665" y="50.4019688269073" color="243,118,29"/></sprites></stage><variables><variable name="codeList"><list struct="atomic" id="187">6,7,6,7,6,7,6,7,6,7,6,7</list></variable><variable name="oddSum"><l>108</l></variable><variable name="evenSum"><l>449</l></variable><variable name="savedSum"><l>557</l></variable><variable name="checkDigit"><l>564</l></variable><variable name="changeVariableBy1"><l>530</l></variable></variables></scene></scenes></project><media name="UPC code checker" app="Snap! 11.0.8, https://snap.berkeley.edu" version="2"></media></snapdata>