Hola Rafa!
 RV> Hola Daniel!
 RV>>> I think you are a little lazy Ļaren't you? The program is very
 RV>>> easy
 DJ>> Perhaps inexperienced?
   yes, I suppose, I just wrote that to be more informal.
 RV>>> if (x=0) return(0);
 DJ>> if(x == 0) return 0;
 DJ>> would work better here.  Of course, since you know the number
 DJ>> isn't greater or less than 0 by this point, a simple return
 DJ>> 0; would work even better.
   thank you for the advice.
Un saludo
     Rafa
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