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ISBN13 check digit: Difference between revisions
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False</pre>
=={{header|MiniScript}}==
This GUI implementation is for use with [http://miniscript.org/MiniMicro Mini Micro].
<syntaxhighlight lang="miniscript">
isISBN13 = function(n)
n = n.replace("-","").replace(" ","")
s = 0
for i in range(0, n.len-1,2)
s += n[i].val
end for
for i in range(1, n.len-1,2)
s += n[i].val * 3
end for
return not (s % 10)
end function
testValues = "978-0596528126 978-0596528120 978-1788399081 978-1788399083".split(" ")
for val in testValues
print val + " " + ["bad", "good"][isISBN13(val)]
end for
</syntaxhighlight>
{{out}}
<pre>
978-0596528126 good
978-0596528120 bad
978-1788399081 good
978-1788399083 bad</pre>
=={{header|Modula-2}}==
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