Factorial: Difference between revisions
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===Imperative===
<syntaxhighlight lang="bash">factorial()
{
declare -nI _result=$1
declare -i n=$2
_result=1
while (( n > 0 )); do
let _result*=n
let n-=1
done
}
</syntaxhighlight>
(the imperative version will write to a variable, and can be used as <code>factorial f 10; echo $f</code>)
=={{header|BASIC}}==
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