The tutorial explains how to write the F# hello world first sample program, How to compile and run the F3 code

F Sharp Hello World example

Following are steps to write a Hello World First Program in F#

  • Open Notepad copy the following lines of code and save the file as Hello.fs
// Hello.fs
// FSharp Hello World program
printfn "Hello, World Welcome to my site"
  • F# code is written with a file of extension .fs
  • Following are comments. Comment starts with // followed by the comment string
  • Comments are ignored by the compiler during programming execution, It is for developer readability
// Hello.fs
// FSharp Hello World program
  • Next line, print the string to the console using the printfn function
printfn "Hello, World Welcome to my site"

The printfn function prints the string to the console.