Re: why here a int and not a float ?

> I try to learn Ocaml by following the Ocaml from the very beginning. 
> 
> I have to write a function that multiplies a number by 10. 
> 
> So I did :  let multiply_ten x = x * 10 ;; 
> 
> but to my surprise I see that the function has this : val multiply_ten : int -> int = <fun> 
> 
> How can I change it so I can also calculate 2.5 * 10 ? 

Ocaml strictly distinguishes between floats and ints. That means you have to explicitly convert
from one to the other. It even uses different arithmetic operators:

* : int * int -> int
*. : float *. float -> float 

You can convert between float/int by
float : int -> float
truncate : float -> int

These functions might help, too:
ceil : float -> float
floor : float -> float

see here http://www.csc.villanova.edu/~dmatusze/resources/ocaml/ocaml.html#intops for example.

r.


[Non-text portions of this message have been removed]