how to print (or cast) an integer

how to print (or cast) an integer

[Ben Aurel]

hi

again a noob question

--
1 let x = 1 and y = 2;;
2
3 x + y ;;
--

how can I print the result on line 3? Printf.printf? I can't find a
solution based on the docu
http://caml.inria.fr/pub/docs/manual-ocaml/libref/Printf.html

thanks
ben

Re: [Caml-list] how to print (or cast) an integer

[Andrew Gacek]

You can do

  print_int (x+y) ;;

or

  Printf.printf "%d" (x+y) ;;

-Andrew

On Wed, Aug 6, 2008 at 9:08 AM, Ben Aurel <ben.aurel@gmail.com> wrote:
> hi
>
> again a noob question
>
> --
> 1 let x = 1 and y = 2;;
> 2
> 3 x + y ;;
> --
>
> how can I print the result on line 3? Printf.printf? I can't find a
> solution based on the docu
> http://caml.inria.fr/pub/docs/manual-ocaml/libref/Printf.html
>
> thanks
> ben
>
> _______________________________________________
> Caml-list mailing list. Subscription management:
> http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list
> Archives: http://caml.inria.fr
> Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
> Bug reports: http://caml.inria.fr/bin/caml-bugs
>

Re: [Caml-list] how to print (or cast) an integer

[Ashish Agarwal]

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Also note you do not need "and". That is only required when the variables
being defined are mutually recursive. It would be better style to write:
let x = 1;;
let y = 2;;



On Wed, Aug 6, 2008 at 10:08 AM, Ben Aurel <ben.aurel@gmail.com> wrote:

> hi
>
> again a noob question
>
> --
> 1 let x = 1 and y = 2;;
> 2
> 3 x + y ;;
> --
>
> how can I print the result on line 3? Printf.printf? I can't find a
> solution based on the docu
> http://caml.inria.fr/pub/docs/manual-ocaml/libref/Printf.html
>
> thanks
> ben
>
> _______________________________________________
> Caml-list mailing list. Subscription management:
> http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list
> Archives: http://caml.inria.fr
> Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
> Bug reports: http://caml.inria.fr/bin/caml-bugs
>

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RE: [Caml-list] how to print (or cast) an integer

[David Allsopp]

> Also note you do not need "and". That is only required when the variables
> being defined are mutually recursive. It would be better style to write:
> 
> let x = 1;;
> let y = 2;;

The style aspect of your comment is a definite matter of opinion![*]

Given that this is a beginner question, it's probably worth clarifying that
in the context of "let .. and .. ;;" or "let .. and .. in ..;;" the "and" is
a shorthand allowing you to group multiple lets together without introducing
a new environment.

"and" only provides mutually recursive definitions in a "let rec" statement.


David



[*] I personally find it neater to group a series of definitions at the same
level using "let .. and .. in" and only use let again for nested definitions
but that's because I indent code after an "in" but I think that my indenting
scheme is somewhat less common...