Hello.

Just why edi ok with test, but not when attempt ?

Forgot to remove debug strings ^^ and also printf debug ^^

Yes, indeed

Nice !

But what about big numbers, according compute time (eg: 2147395600 or 2147483647)

Hello.

Mybe i already saw that somewhere many many time ago, but i prefer tell i didn't know that function.
In my first answer, i made the wheel again, almost ^^.

Thanks to have been learnt me that function.

Hello.

What about the memory.
malloc allocated memory, but never released, isn't it ?

Hello all.

My, i didn't think about ... THAT !!!
Of course !!!

Thank you very much for this hint !!! I should read more carrefully next time !!!