How to Find the Sum of odd numbers from 0 to 100 in F# ?

Recently , I started learning F# as hobby and started writing some simple programs . Today , I was trying out a sample program in F# which finds out the sum of odd numbers from 0 to 100 in F#.

How to Find the Sum of odd numbers from 0 to 100 in F# ?

Below is a sample code snippet that does the work.

// Ginktage - F# Program to find the sum of odd numbers from 0 to 100
open System
[<EntryPoint>]
let main argv = 
    let mutable sum = 0
    for indexer=0 to 100 do
        if indexer%2 <> 0 then 
            sum <- sum + indexer
    printfn "Sum is %A" sum
     // Printing the entered input
    let retval = Console.ReadLine()
    0 // return an integer exit code

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2 Responses

  1. This solution works, but it’s more like C# than F#, a more idiomatic solution would be to have something like:

    [0..100]
    |> List.filter (fun i -> (i % 2) 0)
    |> List.sum
    |> printfn "%i"

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