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Editorial Team
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Asked: 2026-05-12T14:44:15+00:00

I have the following code: #light let rec fib n = if n=0 ||

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I have the following code:

#light
let rec fib n = 
    if n=0 || n=1 then 1 //<- here on the "1"
    n + fib n-1 + fib n-2

How do i fix this?
[i’ve seen this but it didn’t help]

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1 Answer

  1. Editorial Team

    You are missing an else. You also need some extra parenthesis:

    #light
let rec fib n =
  if n=0 || n=1 then 1
  else n + fib (n-1) + fib (n-2)
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