text: "1009 SM" keur nangtukeun sataun nu mangrupa "tahun kabisat" atawa "lain":&lt;syntaxhighlight&gt; if year modulo 4 is 0 then if year modulo 100 is 0 then if year modulo 400 is 0 then is_leap_year else not_leap_year else is_leap_year else not_leap_year &lt;/syntaxhighlight&gt;atawa&lt;syntaxhighlight&gt; if year is divisible by 400 then is_leap_year else if year is divisible by 100 then not_leap_year else if year is divisible by 4