Factorial Program in F#

In this article we are going to see the create a program for factorial in F#, normally create a Factorial means takes four to five line of code, but in F# it is simple in one line we can write that.


rec is the keyword makes the function specify that is recursively called

open System

printfn "Factorial"

let rec factorial x = if x=0 then 1 else x * factorial(x-1)

Console.WriteLine(factorial(5))

Console.ReadKey()

Output:

Factorial

120