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Mutual recursion: Difference between revisions
Logo
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}
}</lang>
=={{header|Logo}}==
Like Lisp, symbols in Logo are late-bound so no special syntax is required for forward references.
<lang logo>
to m :n
if 0 = :n [output 0]
output :n - f m :n-1
end
to f :n
if 0 = :n [output 1]
output :n - m f :n-1
end
show cascade 20 [lput m #-1 ?] []
[1 1 2 2 3 3 4 5 5 6 6 7 8 8 9 9 10 11 11 12]
show cascade 20 [lput f #-1 ?] []
[0 0 1 2 2 3 4 4 5 6 6 7 7 8 9 9 10 11 11 12]
</lang>
=={{header|Objective-C}}==
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