Mutual recursion: Difference between revisions
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minor simplification
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=={{header|Phix}}==
You should normally explicitly declare forward routines (strictly necessary only when using optional or named parameters), since it often makes things easier to understand. There would be no point pre-declaring F, since it is not called before it is defined anyway.
<lang Phix>forward function
return iff(n?n-M(F(n-1)):1)
end function
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printf(1," %d",M(i))
end for</lang>
▲forward function M(integer n)</lang>
{{out}}
<pre>
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